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Init codebase: First version of Filamu #7

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merged 35 commits into from
Mar 12, 2025
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@tuancoltech tuancoltech commented Mar 10, 2025

Summary by CodeRabbit

  • New Features

    • Enhanced video experience with a refreshed interface that includes a grid view for browsing videos and dedicated playback screens.
    • Updated visual design featuring modern adaptive icons, refined layouts, and improved color themes optimized for various devices.
    • Expanded localization support for a consistent user experience across multiple languages.
    • Introduced a SingleClickListener to prevent double-click events on views.
    • New activities for video browsing (VideosActivity) and playback (VideoActivity) with improved data handling.
    • Added new Gradle build configurations and modules for better project structure and dependency management.
    • Introduced a network security configuration allowing cleartext traffic for network communications.
    • New XML layout files for various activities and components to enhance user interface design.
    • New drawable resources for application icons and backgrounds.
    • New ByteArrayDataSource and ByteArrayDataSourceFactory classes for improved data handling.
    • Implemented a coroutine-based approach for loading video data, enhancing performance and user experience.
    • New Gradle wrapper and configuration files to streamline build processes.
    • Introduced a new MainActivity to manage app navigation.
    • Added support for new integer, dimension, and color resources for better layout adjustments and theming.
  • Bug Fixes

    • Resolved issues related to video data retrieval and playback stability.
  • Documentation

    • Added and updated configuration files for build and dependency management.
  • Chores

    • Improved .gitignore entries to exclude unnecessary files from version control.

@tuancoltech tuancoltech self-assigned this Mar 10, 2025
@tuancoltech tuancoltech requested a review from a team as a code owner March 10, 2025 04:38
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coderabbitai bot commented Mar 10, 2025

Walkthrough

This pull request introduces several new files and configurations across the project. Key additions include new Gradle build scripts for both the app and a library module, multiple AndroidManifest files, and a variety of Kotlin source files for application initialization, UI activities, video data processing (repository, data source, and view model), and utility functions. In addition, numerous resource files (layouts, drawables, strings, dimensions, styles) and test configurations (unit, instrumented, and CI workflows) have been added. Enhancements for dependency injection, video playback using ExoPlayer, and custom Gradle tasks are also included.

Changes

File(s) Change Summary
app/.gitignore, gradle/.gitignore, .gitignore (root) Added entries to ignore build directories (e.g., /build, data-video/build), IDE files, and local configuration files.
app/build.gradle, data-video/build.gradle, gradle/libs.versions.toml, gradle/wrapper/gradle-wrapper.properties, build.gradle, gradle.properties, settings.gradle, gradlew, gradlew.bat Introduced and configured multiple Gradle build files and wrappers for both the Android app and the data-video library module, defining plugins, dependencies, build types, custom tasks, and versioning.
app/src/main/AndroidManifest.xml, data-video/src/main/AndroidManifest.xml Added new manifest files defining app metadata, permissions, activities, and module-specific settings.
app/src/main/java/ai/elimu/filamu/BaseApplication.kt, app/src/main/java/ai/elimu/filamu/MainActivity.kt Added application-level classes including a Hilt-enabled BaseApplication and MainActivity that launches VideosActivity.
app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt, app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt, app/src/main/java/ai/elimu/filamu/util/SingleClickListener.kt Introduced UI activity classes for listing and playing videos and a utility class to prevent double-click events.
app/src/main/java/ai/elimu/filamu/data/ByteArrayDataSource.kt, app/src/main/java/ai/elimu/filamu/data/ByteArrayDataSourceFactory.kt Added classes to handle video data reading from byte arrays with Media3 framework integration.
data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/*.kt, data-video/src/main/java/ai/elimu/filamu/data/video/di/*.kt, data-video/src/main/java/ai/elimu/filamu/data/video/viewmodel/*.kt Implemented repository and local data source patterns along with dependency injection modules and ViewModel classes to handle asynchronous video data retrieval and processing.
Layout & Drawable Resources (e.g., app/src/main/res/layout/*.xml, app/src/main/res/drawable/*.xml, app/src/main/res/mipmap-anydpi-v26/*.xml) Added new XML files for UI layouts, video player interfaces, bottom sheet designs, and adaptive app icons.
Resource Files (e.g., app/src/main/res/values/*, app/src/main/res/values-w600dp/*) Introduced localized strings, dimensions, colors, styles, and integer resources for responsive UI design.
Test & Workflow Files (e.g., app/src/test/*.kt, data-video/src/androidTest/*.kt, .github/workflows/gradle-build.yml) Added unit and instrumented tests along with a GitHub Actions workflow to build the project across multiple OS and Java versions.

Sequence Diagram(s)

Loading
sequenceDiagram
    participant User
    participant VideosActivity
    participant VideoViewModel
    participant VideoRepositoryImpl
    participant LocalVideoDataSourceImpl

    User->>VideosActivity: Launch Activity
    VideosActivity->>VideoViewModel: getAllVideos()
    VideoViewModel->>VideoRepositoryImpl: getVideos()
    VideoRepositoryImpl->>LocalVideoDataSourceImpl: getVideos()
    LocalVideoDataSourceImpl-->>VideoRepositoryImpl: List<VideoGson>
    VideoRepositoryImpl-->>VideoViewModel: List<VideoGson>
    VideoViewModel-->>VideosActivity: List<VideoGson>
    VideosActivity->>User: Display video grid
Loading
sequenceDiagram
    participant User
    participant VideoActivity
    participant VideoViewModel
    participant VideoRepositoryImpl
    participant LocalVideoDataSourceImpl

    User->>VideoActivity: Select Video
    VideoActivity->>VideoViewModel: getThumb(videoId)
    VideoViewModel->>VideoRepositoryImpl: readVideoBytes(fileId)
    VideoRepositoryImpl->>LocalVideoDataSourceImpl: readVideoBytes(fileId)
    LocalVideoDataSourceImpl-->>VideoRepositoryImpl: ByteArray?
    VideoRepositoryImpl->>VideoViewModel: ByteArray?
    VideoViewModel->>VideoRepositoryImpl: extractFirstFrameFromVideo(videoBytes)
    VideoRepositoryImpl->>LocalVideoDataSourceImpl: extractFirstFrameFromVideo(videoBytes)
    LocalVideoDataSourceImpl-->>VideoRepositoryImpl: Bitmap?
    VideoRepositoryImpl-->>VideoViewModel: Bitmap?
    VideoViewModel-->>VideoActivity: Bitmap?
    VideoActivity->>User: Display video thumbnail and initiate playback via ExoPlayer

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Actionable comments posted: 16

🧹 Nitpick comments (69)
app/src/main/java/ai/elimu/filamu/ui/video/AudioListener.java (2)

3-6: Add Javadoc documentation to improve code clarity.

While the interface is simple and its name is descriptive, adding Javadoc documentation would improve clarity for other developers. Consider documenting the purpose of this interface and the expected behavior when implementing the onAudioDone() method.

 package ai.elimu.filamu.ui.video;

+/**
+ * Interface for receiving notifications about audio playback completion events.
+ * Implementations can perform actions when audio finishes playing.
+ */
 public interface AudioListener {

+    /**
+     * Called when audio playback has completed.
+     */
     void onAudioDone();
 }

5-5: Consider adding error handling capabilities.

The current interface only handles successful audio completion. In robust applications, it's often necessary to handle error conditions as well. Consider whether you need to add methods for audio playback errors.

 public interface AudioListener {

     void onAudioDone();
+    
+    /**
+     * Called when an error occurs during audio playback.
+     * 
+     * @param error The error that occurred
+     */
+    default void onAudioError(Exception error) {
+        // Default empty implementation allows implementing classes to optionally override
+    }
 }
gradle/.gitignore (1)

13-21: Comprehensive Package File Ignores with Optional Suggestion
The list of package file extensions (such as .jar, .war, .nar, .ear, .zip, .tar.gz, and .rar) is well covered.
Optional Suggestion: Consider adding *.aar if your Android project produces AAR artifacts during the build process.

app/src/main/java/ai/elimu/filamu/ui/viewpager/ZoomOutPageTransformer.java (4)

7-9: Consider enhancing attribution with licensing information.

Good job providing attribution for the borrowed code. For better compliance with open source practices, consider also including the license information from the original repository and any modifications made to the original implementation.


10-14: Consider migrating to ViewPager2.

The implementation looks good, but note that ViewPager is deprecated in favor of ViewPager2, which offers improved performance and features. Consider adapting this transformer for ViewPager2 using ViewPager2.PageTransformer interface instead.

Example for ViewPager2:

public class ZoomOutPageTransformer implements ViewPager2.PageTransformer {
    // Same implementation remains valid for ViewPager2
}

15-47: Add more detailed documentation for the transformation logic.

The implementation of the transformPage method is correct, but it would benefit from more comprehensive documentation explaining:

  1. The mathematical reasoning behind the scale and alpha calculations
  2. The expected visual effect
  3. How the different position ranges affect the page appearance

Additionally, consider extracting complex calculations into helper methods for better readability and maintainability.

public void transformPage(View view, float position) {
    int pageWidth = view.getWidth();
    int pageHeight = view.getHeight();

+   // Handle pages completely out of view
    if (position < -1) { // [-Infinity,-1)
        // This page is way off-screen to the left.
        view.setAlpha(0f);

    } else if (position <= 1) { // [-1,1]
+       // Handle pages in view or partially in view
        // Modify the default slide transition to shrink the page as well
        float scaleFactor = calculateScaleFactor(position);
        float vertMargin = pageHeight * (1 - scaleFactor) / 2;
        float horzMargin = pageWidth * (1 - scaleFactor) / 2;
        
        applyTranslation(view, position, horzMargin, vertMargin);
        applyScale(view, scaleFactor);
        applyAlpha(view, scaleFactor);
    } else { // (1,+Infinity]
        // This page is way off-screen to the right.
        view.setAlpha(0f);
    }
}

+ /**
+  * Calculates the scale factor based on the page position
+  */
+ private float calculateScaleFactor(float position) {
+     return Math.max(MIN_SCALE, 1 - Math.abs(position));
+ }

+ /**
+  * Applies appropriate translation based on position and margins
+  */
+ private void applyTranslation(View view, float position, float horzMargin, float vertMargin) {
+     if (position < 0) {
+         view.setTranslationX(horzMargin - vertMargin / 2);
+     } else {
+         view.setTranslationX(-horzMargin + vertMargin / 2);
+     }
+ }

+ /**
+  * Applies scaling to the view
+  */
+ private void applyScale(View view, float scaleFactor) {
+     view.setScaleX(scaleFactor);
+     view.setScaleY(scaleFactor);
+ }

+ /**
+  * Calculates and applies alpha based on the scale factor
+  */
+ private void applyAlpha(View view, float scaleFactor) {
+     view.setAlpha(MIN_ALPHA +
+             (scaleFactor - MIN_SCALE) /
+             (1 - MIN_SCALE) * (1 - MIN_ALPHA));
+ }

38-42: Simplify the alpha calculation.

The alpha calculation is spread across multiple lines, making it harder to read. Consider formatting it more concisely for better readability.

- view.setAlpha(MIN_ALPHA +
-         (scaleFactor - MIN_SCALE) /
-                 (1 - MIN_SCALE) * (1 - MIN_ALPHA));
+ // Alpha increases linearly from MIN_ALPHA to 1 as scale increases from MIN_SCALE to 1
+ float alphaFactor = (scaleFactor - MIN_SCALE) / (1 - MIN_SCALE);
+ view.setAlpha(MIN_ALPHA + alphaFactor * (1 - MIN_ALPHA));
app/src/main/java/ai/elimu/filamu/util/SingleClickListener.java (3)

7-9: Improve class documentation.

The current documentation is too brief. Consider expanding it to include:

  • Purpose of the class
  • How to use it (with an example)
  • Explanation of the double-click prevention mechanism

12-12: Consider reducing the double-click interval.

2000ms (2 seconds) is quite long for a double-click prevention and might lead to a poor user experience. Users might perceive the app as unresponsive if they try to click a button again within this timeframe.

Consider reducing this to 500-1000ms unless there's a specific requirement for the longer interval.


17-24: Add thread safety to prevent potential race conditions.

Since Android applications are multi-threaded, accessing and modifying shared state without synchronization can lead to race conditions.

Consider adding thread safety to the click time check and update:

@Override
final public void onClick(View v) {
-   if (SystemClock.elapsedRealtime() - mLastClickTime < DOUBLE_CLICK_INTERVAL){
-       return;
-   }
-   mLastClickTime = SystemClock.elapsedRealtime();
+   synchronized (SingleClickListener.class) {
+       if (SystemClock.elapsedRealtime() - mLastClickTime < DOUBLE_CLICK_INTERVAL){
+           return;
+       }
+       mLastClickTime = SystemClock.elapsedRealtime();
+   }

    onSingleClick(v);
}

If you implement the per-view solution from the previous comment, you'll need to ensure that Map access is also thread-safe.

app/src/main/res/drawable/ic_launcher_foreground.xml (1)

1-13: Vector Drawable Foreground: Verify Tint Impact
The vector drawable is well structured with proper dimensions and a translation group for positioning. One point to note is that the android:tint="#FFFFFF" attribute on the <vector> element will override the black (#FF000000) fill color set in the <path>. Please confirm that the resulting appearance meets your design intent.

app/src/main/res/drawable/ic_launcher_background.xml (1)

1-75: Vector Drawable Background: Optimizing Complexity
The background vector drawable is comprehensive and effectively creates the desired grid-like pattern with a solid base color. Although the repeated <path> elements are acceptable for achieving detailed designs, consider refactoring or optimizing for maintainability and performance in the future if this file evolves further.

app/src/main/java/ai/elimu/filamu/data/ByteArrayDataSource.kt (1)

11-39: Implementation looks good with minor improvements possible

The implementation of ByteArrayDataSource correctly manages the byte array as a data source for Media3.

A few considerations:

  1. The addTransferListener method is empty. Consider documenting why listeners are not being used here.
  2. There's no handling for potential NullPointerException if read is called after close.
override fun addTransferListener(transferListener: TransferListener) {
+    // TransferListener not needed for ByteArrayDataSource as we don't track transfer statistics
}

override fun read(buffer: ByteArray, offset: Int, length: Int): Int {
-    val bytesRead = inputStream?.read(buffer, offset, length) ?: -1
+    val stream = inputStream
+    if (stream == null) {
+        return -1
+    }
+    val bytesRead = stream.read(buffer, offset, length)
    if (bytesRead > 0) {
        readBytes += bytesRead
    }
    return bytesRead
}
app/src/main/res/drawable/bg_word_selector.xml (1)

1-5: Consider adding a default state

The selector only defines the pressed state but lacks a default state. This may result in an undefined background when the element is not pressed.

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/bg_word_pressed" android:state_pressed="true" />
+    <item android:drawable="@android:color/transparent" /> <!-- Default state -->
</selector>
app/src/main/res/drawable/ic_hearing.xml (1)

1-10: Vector Drawable for Hearing Icon Looks Good.
The vector drawable is well-defined with the appropriate dimensions and a detailed path for the icon. For future flexibility in theming (e.g., dark mode support), consider referencing a color resource (such as @android:color/black) instead of the hardcoded hex color.

app/src/main/res/values/strings.xml (1)

3-3: Consider following text styling best practices.

The "LEVEL %d" string has hardcoded capitalization in the resource file. It's generally better to keep strings in sentence case in resource files and apply capitalization through styles or programmatically if needed. This approach provides more flexibility for future design changes.

-    <string name="level">LEVEL %d</string>
+    <string name="level">Level %d</string>
data-video/src/main/java/ai/elimu/filamu/data/video/viewmodel/VideoViewModel.kt (1)

5-7: Consider modern Kotlin asynchronous patterns

The interface design is clean and focused on a single responsibility, which is good. However, consider using more idiomatic Kotlin approaches for asynchronous operations:

-interface VideoViewModel {
-    fun getAllVideos(onResult: (List<VideoGson>) -> Unit)
+interface VideoViewModel {
+    // Option 1: Using suspend function
+    suspend fun getAllVideos(): List<VideoGson>
+    
+    // Option 2: Using Flow for continuous updates
+    // fun getAllVideos(): Flow<List<VideoGson>>
}

Using suspend functions or Flow would better integrate with Kotlin coroutines and provide more flexibility in handling the asynchronous data stream.

app/src/main/java/ai/elimu/filamu/data/ByteArrayDataSourceFactory.kt (1)

6-11: Add documentation and handle UnstableApi implications

The implementation is correct and follows the factory pattern appropriately. Consider:

  1. Adding class-level KDoc to explain the purpose and usage of this factory
  2. Noting the implications of the @UnstableApi annotation for future maintenance
 @UnstableApi
+/**
+ * Factory for creating ByteArrayDataSource instances from byte arrays.
+ * Used for feeding byte array data to ExoPlayer for video playback.
+ * 
+ * Note: This class uses Media3's UnstableApi which may change in future releases.
+ */
 class ByteArrayDataSourceFactory(private val byteArray: ByteArray) : DataSource.Factory {
     override fun createDataSource(): DataSource {
         return ByteArrayDataSource(byteArray)
     }
 }
app/src/main/res/layout/activity_storybooks_level.xml (1)

9-19: Enhance accessibility and consider Material Components

The TextView layout looks clean, but consider these improvements:

  1. Add a content description or ensure the text is descriptive for screen readers
  2. Consider using Material Components for consistent theming
-    <TextView
+    <com.google.android.material.textview.MaterialTextView
         android:id="@+id/levelName"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         app:layout_constraintTop_toTopOf="parent"
         android:layout_marginTop="16dp"
         android:layout_marginBottom="8dp"
         android:padding="8dp"
         android:textColor="@android:color/darker_gray"
         android:textAppearance="?android:attr/textAppearanceMedium"
+        android:contentDescription="@string/level_selection"
         tools:text="LEVEL 1"/>

Also, ensure you have a string resource defined for accessibility purposes.

app/src/main/res/layout/activity_video.xml (2)

7-7: Update tools:context attribute to match the actual activity

The tools:context attribute currently references .MainActivity, but according to the file name and purpose, this layout is likely intended for a VideoActivity class.

-    tools:context=".MainActivity">
+    tools:context=".VideoActivity">

9-14: Consider adding content descriptions for accessibility

For better accessibility support, consider adding a content description to the PlayerView.

        android:layout_height="match_parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
-        android:id="@+id/player_view"/>
+        android:id="@+id/player_view"
+        android:contentDescription="@string/video_player_description"/>
gradle/gradle.properties (1)

13-13: Consider enabling parallel builds for improved performance

For faster builds, especially in a multi-module project, you might want to uncomment and enable parallel builds.

-# org.gradle.parallel=true
+org.gradle.parallel=true
data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/local/LocalVideoDataSource.kt (2)

1-1: Consider simplifying the package structure

The package path contains duplicate "data" segments (.data.video.data.repository.local), which might make the structure unnecessarily deep. Consider simplifying if this isn't intentional.


5-7: Consider adding method documentation

For better code documentation, consider adding KDoc comments to the interface and its method.

+/**
+ * Data source for retrieving video data from local storage.
+ */
interface LocalVideoDataSource {
+    /**
+     * Retrieves a list of videos from local storage.
+     * @return List of VideoGson objects
+     */
    suspend fun getVideos(): List<VideoGson>
}
app/src/test/java/ai/elimu/filamu/ExampleUnitTest.java (2)

1-17: Replace example test with actual unit tests

This is an auto-generated example test file. Consider replacing it with actual meaningful tests for your application's functionality.


12-17: Consider using JUnit 5 for new test classes

The example test uses JUnit 4. For new projects, consider using JUnit 5 (Jupiter) which offers more features and better extensibility.

-import org.junit.Test;
-import static org.junit.Assert.*;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;

/**
 * Example local unit test, which will execute on the development machine (host).
 *
 * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
 */
public class ExampleUnitTest {
    @Test
    public void addition_isCorrect() {
        assertEquals(4, 2 + 2);
    }
}
data-video/src/test/java/ai/elimu/filamu/data/video/ExampleUnitTest.kt (1)

1-17: This test file looks good, but consider adding more meaningful tests.

This is a standard example unit test file that comes with a new Android project. While it's a good placeholder, consider adding more meaningful tests that cover the actual functionality of your video module.

In future PRs, I recommend:

  1. Replacing this placeholder with actual unit tests for your video module
  2. Following a naming convention like methodName_scenario_expectedBehavior() for test methods
  3. Adding tests for your core functionality in the video data module
data-video/proguard-rules.pro (1)

1-21: ProGuard configuration looks good but most rules are commented out.

The default ProGuard template is included with good documentation. Consider uncommenting the source file preservation rules for better debugging of release builds.

# Uncomment this to preserve the line number information for
# debugging stack traces.
-#-keepattributes SourceFile,LineNumberTable
+-keepattributes SourceFile,LineNumberTable

# If you keep the line number information, uncomment this to
# hide the original source file name.
-#-renamesourcefileattribute SourceFile
+-renamesourcefileattribute SourceFile
app/src/main/java/ai/elimu/filamu/util/ColoredUnderlineSpan.java (1)

1-35: Well-implemented custom span but has a potential performance issue.

The ColoredUnderlineSpan class is well-structured, but its draw method creates a new rectangle on each call, which could impact performance in lists or recycled views.

Consider these improvements:

  1. Reuse the rectangle object to reduce object creation:
private float thickness;
private Paint linePaint;
+ private final Rect underlineRect = new Rect();

@Override
public void draw(@NonNull Canvas canvas, CharSequence text, int start, int end, float x, int top, int y, int bottom, @NonNull Paint paint) {
    int lineBottom = (int) (top + paint.getFontMetrics().bottom - paint.getFontMetrics().top);
    
    canvas.drawText(text, start, end, x, y, paint);
-   canvas.drawRect(x, lineBottom - thickness, (x + paint.measureText(text, start, end)), lineBottom, linePaint);
+   underlineRect.set((int)x, lineBottom - (int)thickness, (int)(x + paint.measureText(text, start, end)), lineBottom);
+   canvas.drawRect(underlineRect, linePaint);
}
  1. Consider adding anti-aliasing to the line paint for smoother rendering:
public ColoredUnderlineSpan(int color, float thickness) {
    this.thickness = thickness;
    linePaint = new Paint();
    linePaint.setColor(color);
+   linePaint.setAntiAlias(true);
}
app/src/main/res/layout/activity_videos.xml (1)

28-36: Improve ProgressBar configuration with visibility and style attributes.

The ProgressBar is correctly positioned but missing some helpful attributes for managing its visibility and appearance.

Add visibility and style attributes to the ProgressBar:

<ProgressBar
    android:id="@+id/videos_progress_bar"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
-   android:progressTint="@color/colorPrimary"/>
+   android:progressTint="@color/colorPrimary"
+   android:visibility="gone"
+   style="?android:attr/progressBarStyleLarge"/>

This makes the ProgressBar initially hidden (to be shown programmatically when loading) and uses the large style for better visibility.

data-video/src/main/java/ai/elimu/filamu/data/video/di/MainModule.kt (1)

17-18: Redundant @ApplicationContext annotation

Using @ApplicationContext as a qualifier for both the return type and the parameter is redundant. The return type qualifier is sufficient to inform Dagger about the type of context being provided.

@Singleton
@Provides
-@ApplicationContext
fun provideContext(application: Application): Context = application
app/src/main/res/layout/activity_videos_cover_view.xml (2)

22-23: Replace hardcoded content description with a string resource

Hardcoded strings should be moved to string resources for better internationalization support and easier maintenance.

-android:contentDescription="Grace in Space" />
+android:contentDescription="@string/video_cover_content_description" />

Then add this to your strings.xml file:

<string name="video_cover_content_description">Video cover image</string>

32-36: Replace hardcoded text with a string resource

The title text "Grace in Space" is hardcoded and should be moved to string resources to support localization.

-android:text="Grace in Space"
+android:text="@string/default_video_title"

Then add to your strings.xml:

<string name="default_video_title">Grace in Space</string>

In your adapter, you should dynamically set this text based on the actual video title.

data-video/src/main/java/ai/elimu/filamu/data/video/di/DataModule.kt (1)

15-16: Consider adding a scope annotation to the repository binding

While technically functional without a scope annotation, it's generally good practice to specify the scope for repository bindings to control instance lifecycle.

@Binds
+@ViewModelScoped
abstract fun bindVideoRepository(repo: VideoRepositoryImpl): VideoRepository

This ensures a new repository instance for each ViewModel, preventing potential state leakage between different ViewModels.

app/src/androidTest/java/ai/elimu/filamu/ExampleInstrumentedTest.java (1)

13-27: Enhance the example test with additional assertions

This test only verifies the package name. Consider adding more meaningful assertions to validate other aspects of your application.

@Test
public void useAppContext() {
    // Context of the app under test.
    Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();

    assertEquals("ai.elimu.filamu", appContext.getPackageName());
+   
+   // Verify that essential components are available
+   assertNotNull("Application object should not be null", appContext.getApplicationContext());
+   
+   // Verify permissions if your app requires them
+   assertEquals(PackageManager.PERMISSION_GRANTED, 
+       appContext.checkSelfPermission(android.Manifest.permission.READ_EXTERNAL_STORAGE));
}
data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/VideoRepositoryImpl.kt (2)

7-9: Consider depending on the interface rather than the implementation

The repository is directly depending on LocalVideoDataSourceImpl rather than an interface like LocalVideoDataSource. This creates tight coupling which makes the class less flexible and harder to test.

class VideoRepositoryImpl @Inject constructor(
-    private val localDataSource: LocalVideoDataSourceImpl,
+    private val localDataSource: LocalVideoDataSource,
): VideoRepository {

11-13: Consider adding error handling

The method currently has no error handling. If the data source throws an exception, it will propagate up without any handling. Consider adding try-catch blocks to handle potential errors from the data source or document that errors are propagated to the caller.

override suspend fun getVideos(): List<VideoGson> {
-    return localDataSource.getVideos()
+    return try {
+        localDataSource.getVideos()
+    } catch (e: Exception) {
+        // Log error or handle appropriately
+        emptyList() // Or other fallback strategy
+    }
}
data-video/src/androidTest/java/ai/elimu/filamu/data/video/ExampleInstrumentedTest.kt (1)

17-24: Expand test coverage beyond the template

This is a good starting template for instrumented tests, but it only verifies the package name. Consider adding more meaningful tests that verify actual functionality of your video data module, such as testing the repository's ability to fetch videos or testing content provider interactions.

data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/local/LocalVideoDataSourceImpl.kt (1)

13-17: Add error handling for content provider operations

The getVideos() method directly calls ContentProviderUtil.getAllVideoGSONs() without any error handling. Content provider operations can fail for various reasons (permissions, provider not found, etc.). Consider adding try-catch blocks to handle potential errors gracefully.

override suspend fun getVideos(): List<VideoGson> {
-    return ContentProviderUtil.getAllVideoGSONs(
-        context, BuildConfig.CONTENT_PROVIDER_APPLICATION_ID
-    )
+    return try {
+        ContentProviderUtil.getAllVideoGSONs(
+            context, BuildConfig.CONTENT_PROVIDER_APPLICATION_ID
+        )
+    } catch (e: Exception) {
+        // Log the error
+        android.util.Log.e("LocalVideoDataSource", "Error fetching videos", e)
+        emptyList() // Return empty list as fallback
+    }
}
app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (6)

30-38: Initialize the TAG field as a compile-time constant

The TAG variable should be defined as a compile-time constant to improve performance during string concatenation in logging statements. In Kotlin, it's a best practice to use a companion object with a const val for logger tags.

-    var TAG: String = VideosActivity::class.java.name
+    companion object {
+        private const val TAG = "VideosActivity"
+    }

53-55: Use Timber consistently for logging

You're mixing Log.i and Timber.tag().i throughout the class. Stick to Timber for consistent logging patterns across the codebase.

-        Log.i(javaClass.name, "onStart")
+        Timber.tag(TAG).i("onStart")

65-67: Use interface type for ViewModel rather than implementation class

You're using the implementation class directly in ViewModelProvider, which couples your activity to the implementation. Use the interface type for better testability and maintainability.

-        videoViewModel = ViewModelProvider(this)[VideoViewModelImpl::class.java]
+        // Inject the viewmodel using Hilt or use a factory
+        videoViewModel = ViewModelProvider(this)[VideoViewModel::class.java]

70-73: Use Timber consistently for logging

Replace Log.i with Timber.tag() for consistent logging.

-            Log.i(TAG, "videos.size(): " + videos.size)
+            Timber.tag(TAG).i("videos.size(): %d", videos.size)

108-123: Improve click handling for better readability

The anonymous SingleClickListener implementation can be simplified for better readability.

-                videoView.root.setOnClickListener(object : SingleClickListener() {
-                    override fun onSingleClick(v: View) {
-                        Log.i(TAG, "onClick")
-
-                        Log.i(TAG, "video.getId(): " + finalVideo.id)
-                        Log.i(TAG, "video.getTitle(): " + finalVideo.title)
-
-                        val intent = Intent(applicationContext, VideoActivity::class.java)
-                        intent.putExtra(
-                            VideoActivity.EXTRA_KEY_VIDEO_ID,
-                            finalVideo.id
-                        )
-                        startActivity(intent)
-                    }
-                })
+                videoView.root.setOnClickListener(object : SingleClickListener() {
+                    override fun onSingleClick(v: View) {
+                        Timber.tag(TAG).i("onClick - video: %d, title: %s", finalVideo.id, finalVideo.title)
+                        
+                        val intent = Intent(applicationContext, VideoActivity::class.java).apply {
+                            putExtra(VideoActivity.EXTRA_KEY_VIDEO_ID, finalVideo.id)
+                        }
+                        startActivity(intent)
+                    }
+                })

125-131: Use withContext instead of runOnUiThread within a coroutine

Since you're already in a coroutine, use withContext(Dispatchers.Main) instead of runOnUiThread for better consistency with Kotlin's concurrency model.

-                runOnUiThread {
+                withContext(Dispatchers.Main) {
                     videosGridLayout!!.addView(videoView.root)
                     if (videosGridLayout!!.childCount == videos.size) {
                         videosProgressBar!!.visibility = View.GONE
                         videosGridLayout!!.visibility = View.VISIBLE
                     }
                 }
app/build.gradle (1)

86-92: Add documentation for ensureCleanRepo task

This task ensures the Git repository is clean before proceeding, but lacks comments explaining its purpose and importance for the release process.

+/**
+ * Task to ensure the Git repository is in a clean state before proceeding with release tasks.
+ * This prevents accidental changes or uncommitted files from being included in releases.
+ */
 task ensureCleanRepo {
     doLast {
         if (!grgit.repository.jgit.status().call().clean) {
             throw new GradleException('Git status is not clean, please stash your changes!')
         }
     }
 }
app/src/main/java/ai/elimu/filamu/BaseApplication.kt (4)

13-16: Consider using a more appropriate executor and document its purpose

A single-threaded executor may become a bottleneck. Consider using a thread pool executor with a more appropriate size based on your use case. Also, document why this executor is needed.

-    var executor: Executor = Executors.newSingleThreadExecutor()
+    /**
+     * Executor for handling background tasks throughout the application.
+     * Using a cached thread pool to better handle varying workloads.
+     */
+    var executor: Executor = Executors.newCachedThreadPool()

15-16: Make TextToSpeech property private with public getter

The current approach with a public variable and private setter is unconventional. Consider making the property private with a public getter for better encapsulation.

-    var tTS: TextToSpeech? = null
-        private set
+    private var _tts: TextToSpeech? = null
+    
+    /**
+     * Application-wide TextToSpeech instance.
+     */
+    val tts: TextToSpeech?
+        get() = _tts

27-31: Address the TODO for language setting

There's a TODO comment about fetching the chosen language, but no clear plan for implementation. Consider adding more details or creating a proper task for this.

The TODO for setting the language needs to be addressed. Would you like me to provide sample code for fetching and setting the language based on user preferences?


35-37: Consider more comprehensive configuration in the companion object

The companion object only contains the SPEECH_RATE constant. Consider adding more TextToSpeech-related constants and configuration options for better organization.

     companion object {
         const val SPEECH_RATE: Float = 0.5f
+        // Default volume level (range: 0.0 to 1.0)
+        const val DEFAULT_VOLUME: Float = 1.0f
+        // Default pitch level (1.0 is normal)
+        const val DEFAULT_PITCH: Float = 1.0f
     }
app/src/main/AndroidManifest.xml (1)

8-9: Create a plan to remove the READ_EXTERNAL_STORAGE permission

The TODO comment indicates this permission should be removed once the Content Provider app can provide image files directly. Consider creating a task to track this dependency.

This TODO item requires a clear timeline for removing the external storage permission. Would you like me to open an issue to track this task and ensure it's addressed in a future update?

data-video/build.gradle (3)

21-23: Consider using the manifestPlaceholders approach instead of buildConfigField.

You have commented out manifestPlaceholders in favor of buildConfigField for configuration values. manifestPlaceholders would be more efficient as they don't require code generation, especially for values that need to be accessed by the manifest.

 debug {
-//            manifestPlaceholders = [contentProviderApplicationId: "ai.elimu.content_provider.debug"]
+            manifestPlaceholders = [contentProviderApplicationId: "ai.elimu.content_provider.debug"]
     buildConfigField("String", "CONTENT_PROVIDER_APPLICATION_ID", '"ai.elimu.content_provider.debug"')
     buildConfigField("String", "ANALYTICS_APPLICATION_ID", '"ai.elimu.analytics.debug"')
 }

27-29: Same issue with manifestPlaceholders in release build type.

For consistency, consider the same approach for the release build type as suggested above.

 release {
     minifyEnabled false
-//            manifestPlaceholders = [contentProviderApplicationId: "ai.elimu.content_provider"]
+            manifestPlaceholders = [contentProviderApplicationId: "ai.elimu.content_provider"]
     buildConfigField("String", "CONTENT_PROVIDER_APPLICATION_ID", '"ai.elimu.content_provider"')
     buildConfigField("String", "ANALYTICS_APPLICATION_ID", '"ai.elimu.analytics"')
     proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
 }

52-54: Consider explicitly specifying dependency versions.

Despite using version catalogs (which is good!), it would be helpful to add version comments for critical libraries like elimu-model, elimu-content-provider to improve visibility of which versions are being used.

-    implementation libs.elimu.model
-    implementation libs.elimu.content.provider
-    implementation libs.hilt.android
+    implementation libs.elimu.model // v2.0.83
+    implementation libs.elimu.content.provider // v1.2.29-SNAPSHOT-03
+    implementation libs.hilt.android // v2.50
data-video/src/main/java/ai/elimu/filamu/data/video/viewmodel/VideoViewModelImpl.kt (1)

3-12: Consider using Flow for asynchronous data.

Instead of using callbacks, consider returning a Flow<List> which would provide better integration with coroutines and composable operations. This would also allow for easier error handling and state management.

package ai.elimu.filamu.data.video.viewmodel

import ai.elimu.filamu.data.video.data.repository.VideoRepository
import ai.elimu.filamu.data.video.di.IoScope
import ai.elimu.model.v2.gson.content.VideoGson
import androidx.lifecycle.ViewModel
import dagger.hilt.android.lifecycle.HiltViewModel
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.flow
+import kotlinx.coroutines.flow.flowOn
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
import javax.inject.Inject

And in the interface/implementation:

// In VideoViewModel interface
-fun getAllVideos(onResult: (List<VideoGson>) -> Unit)
+fun getAllVideos(): Flow<List<VideoGson>>

// In implementation
-override fun getAllVideos(onResult: (List<VideoGson>) -> Unit) {
-    ioScope.launch {
-        val videos = videoRepository.getVideos()
-        withContext(Dispatchers.Main) {
-            onResult(videos)
-        }
-    }
+override fun getAllVideos(): Flow<List<VideoGson>> = flow {
+    val videos = videoRepository.getVideos()
+    emit(videos)
+}.flowOn(Dispatchers.IO)
app/src/main/java/ai/elimu/filamu/util/BitmapDecoder.java (2)

6-20: Consider using modern image loading libraries instead of manual bitmap decoding.

While your implementation of bitmap decoding is correct, modern libraries like Glide (which you already have as a dependency) provide more robust solutions with caching, lifecycle awareness, and error handling.

Consider refactoring to use Glide:

// Example of how this would look with Glide
public static void loadBitmap(Context context, String imageFile, ImageView imageView, int reqWidth, int reqHeight) {
    Glide.with(context)
        .load(imageFile)
        .override(reqWidth, reqHeight)
        .into(imageView);
}

If you still need the Bitmap object itself, you can use:

public static Bitmap getBitmap(Context context, String imageFile, int reqWidth, int reqHeight) throws ExecutionException, InterruptedException {
    return Glide.with(context)
        .asBitmap()
        .load(imageFile)
        .override(reqWidth, reqHeight)
        .submit()
        .get();
}

1-41: Consider migrating from Java to Kotlin for consistency.

Most of your codebase appears to be in Kotlin, but this utility class is written in Java. For codebase consistency, consider migrating this class to Kotlin.

Here's how it might look in Kotlin:

package ai.elimu.filamu.util

import android.graphics.Bitmap
import android.graphics.BitmapFactory

object BitmapDecoder {

    fun decodeSampledBitmap(imageFile: String?, reqWidth: Int, reqHeight: Int): Bitmap? {
        if (imageFile == null) return null
        
        return try {
            // First decode with inJustDecodeBounds=true to check dimensions
            val options = BitmapFactory.Options().apply {
                inJustDecodeBounds = true
            }
            BitmapFactory.decodeFile(imageFile, options)
            
            // Calculate inSampleSize
            options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight)
            
            // Decode bitmap with inSampleSize set
            options.inJustDecodeBounds = false
            BitmapFactory.decodeFile(imageFile, options)
        } catch (e: Exception) {
            e.printStackTrace()
            null
        }
    }
    
    fun calculateInSampleSize(options: BitmapFactory.Options, reqWidth: Int, reqHeight: Int): Int {
        // Raw height and width of image
        val height = options.outHeight
        val width = options.outWidth
        var inSampleSize = 1
        
        if (height > reqHeight || width > reqWidth) {
            val halfHeight = height / 2
            val halfWidth = width / 2
            
            // Calculate the largest inSampleSize value that is a power of 2 and keeps both
            // height and width larger than the requested height and width.
            while ((halfHeight / inSampleSize) >= reqHeight && (halfWidth / inSampleSize) >= reqWidth) {
                inSampleSize *= 2
            }
        }
        
        return inSampleSize
    }
}
app/src/main/java/ai/elimu/filamu/util/VideoProviderExt.kt (1)

17-40: Be mindful of large file reads.
Although reading the entire video file into memory is straightforward, it might impact performance and memory usage if the file is large. You could consider a streaming approach if handling large video files is a concern.

app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt (2)

37-119: Consider using the lifecycle-aware coroutine scope.
Launching a coroutine with a generic CoroutineScope in onCreate may work, but it is often best practice to use a lifecycle-aware scope (e.g., lifecycleScope) to automatically cancel pending operations when the Activity is destroyed.

-import kotlinx.coroutines.CoroutineScope
+import androidx.lifecycle.lifecycleScope

...

-CoroutineScope(Dispatchers.IO).launch {
+lifecycleScope.launch(Dispatchers.IO) {

128-154: Delete the temporary file after use.
detectVideoCodec writes a temporary file to disk but never deletes it, which may lead to storage bloat. Deleting the file in the finally block helps avoid leftover files.

try {
    extractor.setDataSource(tempFile.absolutePath)
    ...
} catch (e: Exception) {
    ...
} finally {
    extractor.release()
+   tempFile.delete()
}
data-video/src/main/java/ai/elimu/filamu/data/video/di/CoroutinesModule.kt (1)

13-27: Custom qualifiers defined but not all are used

You've defined four qualifiers (IoScope, DefaultScope, MainScope, and ApplicationScope), but only two of them (IoScope and MainScope) are being used in provider methods. Consider either implementing provider methods for the unused qualifiers or removing them if they're not needed.

app/src/main/res/values/dimens.xml (1)

24-57: Missing documentation for array relationships

The relationship between similarly named arrays (e.g., chapter_text_line_spacing using multipliers and chapter_text_line_spacing_recyclerview using dp values) is not documented. Consider adding XML comments to explain the purpose and usage context for each array.

+<!-- Line spacing multipliers for standard text views -->
 <string-array name="chapter_text_line_spacing">
     <item>1.5</item>
     <item>1.4</item>
     <item>1.3</item>
     <item>1.2</item>
 </string-array>

+<!-- Word spacing in pixels for standard text views -->
 <integer-array name="chapter_text_word_spacing">
     <item>3</item>
     <item>3</item>
     <item>2</item>
     <item>2</item>
 </integer-array>

+<!-- Line spacing in dp specifically for RecyclerView text items -->
 <integer-array name="chapter_text_line_spacing_recyclerview">
app/src/main/res/values/colors.xml (2)

23-23: Inconsistent capitalization in hex color code

The hex code for green_accent_1 has inconsistent capitalization (#B9f6CA with lowercase 'f'). For consistency, either use all uppercase or all lowercase for hex color values throughout the file.

-<color name="green_accent_1">#B9f6CA</color>
+<color name="green_accent_1">#B9F6CA</color>

24-24: Unclear transparency relationship

The color green_accent_transparent uses #AAA9E6CA where AA is the alpha channel, but the color value A9E6CA doesn't match any other defined green color exactly. Consider using a transparency variant of an existing green color for clarity.

-<color name="green_accent_transparent">#AAA9E6CA</color>
+<color name="green_accent_transparent">#AAB9F6CA</color> <!-- 67% transparent green_accent_1 -->
data-video/src/main/AndroidManifest.xml (2)

6-8: Document or implement commented query section.

The commented <queries> section suggests planned functionality for querying a specific content provider. Either implement this functionality if it's required, or add a comment explaining why it's reserved for future use.


2-10: Add documentation for custom permission.

Consider adding a comment explaining the purpose and usage of the custom permission. This helps other developers understand why this permission is required and how it relates to the content provider.

app/src/main/java/ai/elimu/filamu/MainActivity.java (2)

20-21: Implement the TODO for content provider verification.

The TODO comment indicates an important step that needs implementation - verification of a content-provider APK. This seems critical to the application's functionality and should be addressed before considering this PR complete.

Would you like me to suggest an implementation approach for verifying the content provider installation?


13-19: Consider adding error handling for content view inflation.

The current implementation assumes the activity_main layout will always inflate successfully. Consider adding error handling to manage potential resource exceptions, especially as this seems to be an initialization activity.

data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/VideoRepository.kt (1)

5-7: Add documentation and error handling to the repository interface.

The interface design follows good clean architecture principles with a focused contract. However, consider these improvements:

  1. Add KDoc comments to explain the purpose of the interface and method
  2. Consider implementing error handling through Result<List> or Flow<List> for more reactive patterns
  3. Document any potential exceptions or error states

This would improve maintainability and provide better guidance for implementations.

interface VideoRepository {
+    /**
+     * Retrieves a list of videos from the data source.
+     * 
+     * @return List of video data objects
+     */
    suspend fun getVideos(): List<VideoGson>
}
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  • gradle/libs.versions.toml (1 hunks)
  • gradle/settings.gradle (1 hunks)
  • gradle/wrapper/gradle-wrapper.properties (1 hunks)
🔇 Additional comments (51)
gradle/.gitignore (8)

1-3: Standard Ignore for Compiled Files
The ignore entry for compiled class files (*.class) is correctly defined.


4-6: Standard Log File Ignoring
The pattern to ignore log files (*.log) is standard and correctly implemented.


7-9: BlueJ Files Exclusion
The ignore rule for BlueJ files (*.ctxt) is appropriate.


10-12: Mobile Tools for Java Temporary Files
The pattern .mtj.tmp/ correctly ignores temporary files generated by Mobile Tools for Java.


22-24: VM Crash Logs Filtering
The entries hs_err_pid* and replay_pid* appropriately cover virtual machine crash logs.


26-29: IntelliJ Project Files Ignored
Ignoring IntelliJ-related files (such as *.iml and the .idea directory) is standard practice.


30-33: Gradle Files Exclusion
The rules to ignore the .gradle/ directory and the build/ folder are correctly specified.


34-35: Local Configuration Files Handling
Excluding local.properties ensures that local SDK paths and configuration details are not tracked.

app/src/main/java/ai/elimu/filamu/ui/viewpager/ZoomOutPageTransformer.java (1)

1-48: LGTM: Overall implementation is well-structured.

The overall implementation of the zoom-out page transformation effect is well-structured and correctly implements the ViewPager.PageTransformer interface. The different position cases are handled appropriately, and the visual effect calculations are mathematically sound.

app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml (1)

1-5: Adaptive Icon XML for Rounded Launcher Approved
The adaptive icon is properly defined and correctly references the background and foreground drawables, ensuring a consistent presentation on devices that require round launcher icons.

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml (1)

1-5: Adaptive Icon XML for Standard Launcher Approved
This adaptive icon file is implemented correctly, combining the background drawable (@drawable/ic_launcher_background) with the foreground drawable (@mipmap/ic_launcher_foreground) to produce a scalable icon.

app/src/main/res/values-w600dp/integers.xml (1)

1-5: New Integer Resource for Wide Screens
This XML file introduces a new integer resource gridlayout_column_count with a value of 4. This is useful for adapting layouts on wider screens compared to the default configuration (typically set to 2). Ensure that layout files correctly reference this resource based on the device’s screen size.

app/src/main/res/values-bn/strings.xml (1)

1-5: Bengali Localization Resources Added
The file correctly defines the localized string resources app_name ("Filamu") and level ("LEVEL %d"). The use of the placeholder %d is appropriate for dynamic content formatting. Verify that the localization mechanism picks up this file alongside similar resources in other languages.

app/src/main/res/values-sw/strings.xml (1)

1-5: Swahili Localization Resources Added
This new XML file provides the app_name and level resources for the Swahili language. The entries are consistent with the Bengali and other localization files. No issues detected; the implementation adheres to standard localization practices.

app/src/main/res/values-hi/strings.xml (1)

1-5: Hindi Localization Resources Added
The file introduces string resources for Hindi localization with app_name and level entries. The format, including the placeholder %d, aligns well with the other language files ensuring a uniform user experience for multi-language support.

app/src/main/res/values-fil/strings.xml (1)

1-5: Filipino Localization Resources Added
This XML file sets up localized string resources for Filipino with app_name and level defined similarly to the other localization files. Ensure that the language code fil is correctly used across the project for consistency in localization lookups.

app/src/main/java/ai/elimu/filamu/data/ByteArrayDataSource.kt (2)

11-12: Note the UnstableApi annotation

This class uses Media3's @UnstableApi annotation, indicating it depends on APIs that may change in future releases. Make sure to test thoroughly when updating Media3 dependencies.


1-10:

✅ Verification successful

The ByteArrayDataSourceFactory is missing

The AI summary mentions a ByteArrayDataSourceFactory class that should be present in this file but is not in the implementation. Consider adding the factory class to ensure proper usage of this data source.


🏁 Script executed:

#!/bin/bash
# Search for any implementation of ByteArrayDataSourceFactory in the codebase
echo "Checking for ByteArrayDataSourceFactory implementation..."
rg -i "class\s+ByteArrayDataSourceFactory" --type kotlin

Length of output: 342


ByteArrayDataSourceFactory Implementation Verified

After verifying the codebase, we found that the ByteArrayDataSourceFactory is implemented in its own file (app/src/main/java/ai/elimu/filamu/data/ByteArrayDataSourceFactory.kt). Since the factory class is present and correctly implemented as per the AI summary, no additional changes are necessary.

app/.gitignore (1)

1-2: Standard gitignore entry

The /build entry in gitignore is correct and follows standard practice for Android projects to exclude build artifacts from version control.

app/src/main/res/drawable/bg_word_pressed.xml (1)

1-5:

✅ Verification successful

Confirm color resource exists

The drawable correctly defines a rectangular shape with a solid color. However, verify that @color/green_lighten_2 is defined in your color resources.


🏁 Script executed:

#!/bin/bash
# Check if the color resource exists
echo "Checking for color resource definition..."
rg -i "green_lighten_2" --type xml app/src/main/res/values/

Length of output: 237


Color resource confirmed.
The drawable correctly defines a rectangular shape with a solid color, and the color resource @color/green_lighten_2 is present in the resource file (app/src/main/res/values/colors.xml). No further changes are required.

app/src/main/res/drawable/bg_bottom_sheet_dialog_fragment.xml (1)

1-10: Drawable Resource Defined Correctly.
The XML correctly defines a rectangular shape with rounded top corners and a solid white fill. Please ensure that the referenced dimension resource (@dimen/bottom_sheet_corner_radius) is defined in your dimens resource files for consistency.

app/src/main/res/values/integers.xml (1)

1-5: Integer Resource Setup is Clear.
The file properly defines the gridlayout_column_count integer resource. Verify that its counterpart in values-w600dp/integers.xml remains consistent and is appropriately utilized in your layouts for responsive design.

app/src/main/res/layout/activity_main.xml (1)

1-8: Main Activity Layout Initialization.
The ConstraintLayout is correctly established as the root layout for MainActivity. As this is an initial scaffold, consider adding UI components or placeholder views as needed when the screen design evolves.

gradle/settings.gradle (1)

1-4: Gradle Multi-Module Configuration Appears Correct.
The settings file properly includes both the :app and :data-video modules and correctly sets the root project name. Just ensure that the corresponding module directories and build files are in place.

app/src/main/res/values/strings.xml (1)

1-4: Good internationalization setup.

The string resources appear to have proper localization support with translations available in multiple languages (bn, fil, hi, sw). This is excellent practice for making the app accessible to a broader audience.

app/src/main/res/layout/activity_video.xml (1)

9-14: LGTM: Video player implementation looks good

The PlayerView implementation is correctly constrained within the layout and takes up the full screen, which is appropriate for a video player experience.

gradle/gradle.properties (1)

1-19: LGTM: Standard Gradle configuration

The Gradle properties file contains standard and appropriate configuration for an Android project. Using AndroidX and enabling Jetifier are current best practices.

data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/local/LocalVideoDataSource.kt (1)

1-7: LGTM: Clean interface design with coroutine support

The interface follows good design principles - it's focused, has a clear purpose, and properly uses Kotlin's suspend function for asynchronous operations.

data-video/proguard-rules.pro (1)

22-25: Good Hilt ProGuard rules configuration.

You've correctly added the necessary ProGuard rules for Dagger Hilt. These rules will ensure that Hilt's internal classes are properly kept during obfuscation.

app/src/main/res/layout/activity_videos_cover_view.xml (1)

4-6: Review layout_width attribute and coordinate attributes

The CardView's layout_width="0dp" combined with tools:layout_width="wrap_content" seems inconsistent. The 0dp width typically indicates that the view should use constraints or weights, but this requires proper parent layout configuration.

Ensure that this CardView is used within a GridLayout, ConstraintLayout, or other layout that properly handles the weight and span attributes you've defined. Otherwise, consider changing to:

-android:layout_width="0dp"
+android:layout_width="match_parent"

Also applies to: 11-11

app/build.gradle (2)

13-14:

❓ Verification inconclusive

Verify targetSdkVersion matches available SDK versions

Similar to compileSdk, targetSdkVersion 35 seems too high. Typically, targetSdkVersion should match a released Android API level.


🏁 Script executed:

#!/bin/bash
# Check for defined SDK versions in the project
cat "${ANDROID_HOME:-$HOME/Android/Sdk}/platforms/android-*/source.properties" 2>/dev/null | grep "Pkg.Revision" | sort

Length of output: 99


Review Verification: Confirm Available Android SDK Platforms Against targetSdkVersion 35

The initial verification script did not return any SDK version details. To ensure that the declaration in app/build.gradle (lines 13–14) using targetSdkVersion 35 actually corresponds to an available and released Android API level, please manually re-verify the SDK platforms by listing the directories from your Android SDK installation. For instance, run the following script:

This will help confirm whether a platform like "android-35" (or similar) exists. Once you have manually verified the available SDK platforms, update the targetSdkVersion if necessary or add appropriate documentation if 35 is indeed intended.


🏁 Script executed:

#!/bin/bash
# List available Android SDK platforms directories to verify available targetSdkVersion.
platforms_dir="${ANDROID_HOME:-$HOME/Android/Sdk}/platforms"
if [ -d "$platforms_dir" ]; then
    echo "Available SDK Platforms:"
    ls -d "$platforms_dir"/android-* 2>/dev/null | while read -r line; do
        basename "$line"
    done
else
    echo "Platforms directory not found."
fi

Length of output: 295


Action Required: Verify Android SDK Installation and targetSdkVersion

The script did not detect any installed SDK platform directories, implying that your Android SDK might not be correctly configured or installed on this environment. Please manually verify the following:

  • Confirm that your local Android SDK is properly installed and that its platforms directory is correctly set (e.g., check the environment variable ANDROID_HOME).
  • Ensure that the intended target Android API (API level 35) is available. If not, update the targetSdkVersion in app/build.gradle to match a valid, released API level.

8-9:

✅ Verification successful

Verify the compileSdk and targetSdkVersion values

The compileSdk value of 35 seems unusually high. As of my knowledge cutoff, the latest Android SDK version is 34 (Android 14). Please verify this value to ensure it's correct.


🌐 Web query:

What is the latest Android SDK version available?

💡 Result:

The latest stable Android SDK version is Android 15 (API level 35), released in September 2024[4][6]. Google has also released the first Developer Preview of Android 16 (API level 36) in November 2024, with a final release expected in Q2 2025[4][6].

Key Details:

Android 15 (API 35) - Vanilla Ice Cream

  • Released September 3, 2024
  • Notable feature: Reintroduced lock screen widgets for tablets[4]
  • Current target requirement for new Google Play apps since August 31, 2024[3]

Android 16 (API 36) - Beta (Baklava)

  • First Developer Preview released November 19, 2024
  • Planned stable release: Q2 2025
  • New features in DP1 include embedded photo picker and privacy sandbox enhancements[4]

Development Requirements:

  • New Play Store apps must target Android 14 (API 34) as of August 2024[3]
  • Android Studio Flamingo (2022.2.1+) required for Android 14 development[2]
  • Latest Build Tools version: 34.x.x[5]

The Android 14 SDK (API 34) remains critical for current compliance, while Android 15 is the newest stable OS version. Developers should monitor Android 16's progress as it moves toward stable release in 2025[4][6].

Citations:


Compile SDK Version Verification & Next Steps

The compileSdk value of 35 is correct since Android 15 (API level 35) is now the latest stable SDK release. Please also verify that the targetSdkVersion (if defined elsewhere in your configuration) aligns with your intended Android platform requirements.

app/src/main/AndroidManifest.xml (1)

22-23:

✅ Verification successful

Replace requestLegacyExternalStorage attribute

The android:requestLegacyExternalStorage="true" attribute is deprecated for Android 11+ and should be replaced with a modern alternative like scoped storage.

Since Android 11+, apps should adapt to scoped storage instead of using requestLegacyExternalStorage. Consider implementing modern storage access patterns like:

  1. Using MediaStore for accessing media files
  2. Using Storage Access Framework for user-selected files
  3. Using app-specific storage for files that don't need to be shared
-        android:requestLegacyExternalStorage="true"

🌐 Web query:

What is the recommended alternative to requestLegacyExternalStorage in Android 11+?

💡 Result:

The requestLegacyExternalStorage flag allowed Android 10 apps to bypass Scoped Storage restrictions, but it becomes ineffective for apps targeting Android 11 (API 30+). Here's how to adapt:

Key Alternatives for Android 11+

  1. MediaStore API

    • Access media files (images, videos, audio) via standardized collections like MediaStore.Images or MediaStore.Downloads[2][6][8].
    • No permissions required for contributing to media collections like Downloads[6].
    • Direct file path access is permitted for media files if the app declares READ_EXTERNAL_STORAGE[6][8].
  2. Storage Access Framework (SAF)

    • Use ACTION_OPEN_DOCUMENT or ACTION_CREATE_DOCUMENT intents for user-guided file selection[2][8].
    • Grants temporary access to non-media files without broad permissions[6][8].
  3. App-Specific Directories

    • Store private files in Context.getExternalFilesDir() or Context.getExternalCacheDir()[3][8].
    • No permissions needed, and files are deleted on app uninstallation[3][8].

Transition Strategies

  • For apps targeting Android 10 (API 29):
    Keep requestLegacyExternalStorage="true" temporarily while migrating to Scoped Storage[4][6][9].
  • For apps targeting Android 11 (API 30+):
    • Remove requestLegacyExternalStorage (it’s ignored)[1][4].
    • Use preserveLegacyExternalStorage during phased migration to retain access to legacy storage locations[8].

Restricted Option (Use Sparingly)

  • MANAGE_EXTERNAL_STORAGE Permission
    • Required for broad file system access beyond Scoped Storage[1][4].
    • Requires justification in Google Play Console and risks removal if misused[1][4].

Example Migration Steps

<!-- Remove from AndroidManifest.xml when targeting API 30+ -->
<application android:requestLegacyExternalStorage="false" ...>

For media access:

// Using MediaStore to query images
ContentResolver resolver = getContentResolver();
Cursor cursor = resolver.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, 
                              null, null, null, null);

For document selection:

// Using Storage Access Framework
Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("application/pdf");
startActivityForResult(intent, REQUEST_CODE);

Note: Apps targeting API 29 can still use requestLegacyExternalStorage on Android 11 devices as a temporary measure[6][9], but Google Play mandates eventual compliance with Scoped Storage for updates[1][4].

Citations:


Action Required: Remove Legacy Storage Flag

The android:requestLegacyExternalStorage="true" attribute is deprecated for Android 11 (API 30+) and is ignored on newer devices. Please remove it from your manifest and switch to scoped storage practices. For example, adopt one or more of the following approaches as needed:

  • MediaStore API: For accessing media files like images, videos, and audio.
  • Storage Access Framework (SAF): For allowing user-driven file selection.
  • App-specific directories: For storing private data without needing broad access.
-        android:requestLegacyExternalStorage="true"

This change will ensure your app complies with modern Android storage requirements.

data-video/build.gradle (1)

10-10:

❓ Verification inconclusive

Target SDK 35 is very new - verify compatibility.

CompileSDK 35 appears to correspond to a very recent Android platform version. Consider verifying that this version is stable enough for your needs and that all your dependencies are compatible with it.


🏁 Script executed:

#!/bin/bash
# Check current latest stable Android SDK version
sdkmanager --list | grep "platforms;android-" | sort

Length of output: 155


Please manually verify compatibility with Android Compile SDK 35.

  • The current automated check using sdkmanager --list failed because the sdkmanager command isn't available.
  • Without the automation output, confirm via your local Android development setup or official Android documentation that SDK 35 is stable and that all dependencies are compatible with it.
gradle/libs.versions.toml (4)

21-22:

✅ Verification successful

Very new Gradle and Kotlin plugin versions.

You're using very recent versions of the Android Gradle Plugin (8.5.2) and Kotlin Android Plugin (1.9.24). While staying up-to-date is good, these versions might introduce compatibility issues with other tools or CI systems. Ensure your entire build pipeline supports these versions.


🏁 Script executed:

#!/bin/bash
# Check Gradle version and wrapper configuration
grep -r "distributionUrl" --include="gradle-wrapper.properties" .

Length of output: 185


Action: Confirm CI Compatibility with New Plugin Versions

  • Verified that the Gradle wrapper is set to gradle-8.12, which meets the requirements for Android Gradle Plugin 8.5.2.
  • You're now using Android Gradle Plugin 8.5.2 and Kotlin Android Plugin 1.9.24—both very recent versions.
  • While the wrapper configuration indicates compatibility, please ensure that your entire build pipeline and any integrated tools or CI systems are updated to support these new versions.

25-28:

❓ Verification inconclusive

GitHub dependencies might cause build issues.

Dependencies from GitHub (com.github.elimu-ai) may cause build failures if GitHub is unavailable or rate limits are hit. Ensure you have JitPack or another GitHub package repository properly configured in your settings.gradle file.


🏁 Script executed:

#!/bin/bash
# Check if JitPack repository is configured
grep -r "jitpack.io" --include="*.gradle" --include="*.kts" .

Length of output: 382


Ensure JitPack (or an equivalent GitHub package repository) is Configured Properly

The GitHub dependencies (e.g., elimu-model and elimu-analytics) rely on JitPack, and the grep output confirms that there are references to JitPack in your app/build.gradle (e.g., comments like // See https://jitpack.io/#elimu-ai/model). However, to avoid build issues due to GitHub outages or rate limiting, please verify that the JitPack (or alternative) repository is explicitly configured (typically via a block such as maven { url 'https://jitpack.io' }) in your top-level Gradle configuration (e.g., in settings.gradle or the project-level build.gradle).

  • Action Items:
    • Confirm that your settings.gradle (or appropriate project-level Gradle file) includes the JitPack repository configuration.
    • If not already present, add the repository configuration to ensure reliable dependency resolution for GitHub-hosted libraries.
# gradle/libs.versions.toml snippet (unchanged)
elimu-model = { group = "com.github.elimu-ai", name = "model", version.ref = "elimuModel" }
elimu-analytics = { group = "com.github.elimu-ai", name = "analytics", version.ref = "elimuAnalytics" }
elimu-content-provider = { group = "ai.elimu.content_provider", name = "utils", version.ref = "elimuContentProvider" }
flexbox = { group = "com.google.android.flexbox", name = "flexbox", version.ref = "flexbox" }

By ensuring this repository configuration is in place, you help secure the build against potential GitHub service issues.


20-20:

❓ Verification inconclusive

Using beta version of Media3 library.

You're using androidx.media3 1.6.0-beta01 which is a beta release. While this might include newer features, it could also contain instability or bugs. Consider evaluating if a stable release would be sufficient for your needs.


🌐 Web query:

What is the latest stable version of AndroidX Media3?

💡 Result:

The latest stable version of AndroidX Media3 is 1.5.1, released on December 20, 2024[1][9]. This release includes stability improvements and bug fixes over previous versions, such as:

  • Disabling asynchronous decryption in MediaCodec to prevent codec timeout issues[4]
  • Fixing MP3 playback errors related to VBRI frame parsing[4]
  • Addressing video rendering bugs involving pixel aspect ratio calculations[4]

The current beta release is 1.6.0-beta01, which introduces experimental features like AV1 sample dependency parsing for faster seeking[1][4]. Key changes in recent versions include:

Version Type Notable Changes
1.5.1 Stable Security fixes and media format compatibility improvements[1][4]
1.6.0-beta01 Beta Experimental AV1 support, clipping improvements, and surface handling updates[1][4]

Developers should use the stable 1.5.1 release for production apps, while the beta channel offers early access to upcoming features requiring API version 21 (Android Lollipop) or higher[1][7]. The Media3 library continues to replace legacy ExoPlayer implementations, with full migration recommended for ongoing support[2][3].

Citations:


Action: Evaluate the necessity of the beta version of AndroidX Media3

While the current configuration in gradle/libs.versions.toml uses androidMedia3 = "1.6.0-beta01", note that the latest stable version is 1.5.1 (released December 2024). Beta releases like 1.6.0-beta01 may offer early access to new features (e.g., experimental AV1 support) but can also introduce instability and unexpected issues. Please assess whether your project benefits from these experimental features or if the stability and bug fixes provided in version 1.5.1 would be more appropriate for production use.

  • File: gradle/libs.versions.toml (Line 20)
  • Recommendation: Consider switching to androidMedia3 = "1.5.1" if production stability is a priority.

2-4:

✅ Verification successful

Ensure stability with elimuContentProvider SNAPSHOT dependency.

Using a SNAPSHOT version (1.2.29-SNAPSHOT-03) for elimuContentProvider can lead to inconsistent builds, as SNAPSHOT versions can change unexpectedly. Consider using a stable release version when possible, or ensure that the SNAPSHOT behaves as expected.


🌐 Web query:

What are the risks of using SNAPSHOT dependencies in Gradle builds?

💡 Result:

Using SNAPSHOT dependencies in Gradle builds introduces several risks that can impact build reliability, security, and maintainability:

1. Unpredictable Build Behavior

  • Stale dependency resolution: Gradle caches SNAPSHOT artifacts by default (24 hours), potentially using outdated versions even after new snapshots are published[1][11]. Forcing immediate checks with cacheChangingModulesFor 0, 'seconds' sometimes fails due to caching nuances[17].
  • Non-deterministic outputs: Builds may produce different results over time or across machines if SNAPSHOT dependencies change between runs[6][9].

2. Build Stability Risks

  • Expiring dependencies: SNAPSHOT artifacts in repositories like Maven Central are often purged, breaking builds that rely on them long-term[2].
  • Transitive dependency conflicts: Projects depending on multiple SNAPSHOTs risk version mismatches, especially in multi-module setups where circular dependencies can cause resolution failures[3][18].

3. Security and Integrity Concerns

  • Unverified artifacts: By default, Gradle skips dependency verification for SNAPSHOTs, increasing exposure to compromised dependencies[10][12].
  • Malicious updates: Dynamic versioning (e.g., + or -SNAPSHOT) allows unintended upgrades to untested or harmful versions[6][8].

4. Performance Overhead

  • Frequent remote checks: Gradle contacts repositories to validate SNAPSHOT freshness, increasing build latency and network usage[9].
  • Cache management challenges: Forced cache invalidations (e.g., --refresh-dependencies) or manual cache deletions are often required to fetch updates[11][17].

5. Release and Maintenance Challenges

  • Accidental inclusion in releases: SNAPSHOTs in production builds risk dependency expiration, requiring emergency patches[2][13].
  • Tooling limitations: Some plugins/tasks (e.g., release scripts) may fail to detect SNAPSHOTs in buildscript configurations, leading to undetected issues[13].

Mitigation Strategies

  • Avoid SNAPSHOTs in releases: Use the checkDependsOnSNAPSHOT task to block SNAPSHOTs in final artifacts[2][13].
  • Limit caching duration: Configure resolutionStrategy.cacheChangingModulesFor to balance freshness and performance[1][9].
  • Prefer explicit versions: Replace dynamic versions with fixed releases to ensure reproducibility[6][9].
  • Isolate SNAPSHOT repositories: Separate snapshot and release repos to avoid accidental usage[8][15].

For critical workflows, consider alternatives like version ranges with locking mechanisms or incremental build numbers (e.g., 4.0.0-m1) for controlled updates[3][6].

Citations:


Subject: Address Snapshot Dependency Risks for elimuContentProvider

The web query confirms that using a SNAPSHOT dependency (currently "1.2.29-SNAPSHOT-03") introduces several risks:

  • Unpredictable Build Behavior: Cached SNAPSHOTs may lead to inconsistent outputs and stale dependencies.
  • Stability & Security Risks: SNAPSHOT artifacts can be purged, conflict with transitive dependencies, and lack proper verification.
  • Performance Overhead: Frequent repository checks can slow down builds.

Recommendation:
Either switch to a stable release version of elimuContentProvider to ensure consistent builds, or, if the SNAPSHOT is needed for development, implement strict caching and dependency verification strategies to mitigate these risks.

data-video/src/main/java/ai/elimu/filamu/data/video/viewmodel/VideoViewModelImpl.kt (1)

14-18: LGTM! Good ViewModel implementation with Hilt.

The ViewModel is properly annotated with @hiltviewmodel and the constructor is correctly marked with @Inject. The use of a custom @IOscope for the CoroutineScope is a good practice for separating concerns.

gradle/gradlew.bat (1)

1-93: All lines appear to be a standard Gradle Wrapper script.
No issues found with licensing, environment detection, or error handling.

app/src/main/java/ai/elimu/filamu/util/VideoProviderExt.kt (1)

42-67: Functionality is clear and concise.
The approach of using a temporary file plus MediaMetadataRetriever properly extracts and returns a frame. Error handling is sufficient, and the logs are helpful for debugging.

gradle/gradlew (1)

1-250: Looks like a standard Gradle Wrapper script.
No issues found with path resolution or environment variable usage.

data-video/src/main/java/ai/elimu/filamu/data/video/di/CoroutinesModule.kt (1)

29-41: Well-structured coroutine scope providers

The implementation of the CoroutineScopeModule looks good. It correctly provides singleton-scoped coroutine dispatchers for IO and Main threads, which is essential for managing asynchronous operations throughout the application.

app/src/main/res/values/styles.xml (2)

2-6: Base app theme is properly configured

The AppTheme is correctly set up with appropriate color attributes referenced from the colors.xml file.


22-24:

✅ Verification successful

Verify the referenced drawable exists

The BottomSheet style references @drawable/bg_bottom_sheet_dialog_fragment for the background. Ensure this drawable resource file exists in the project, or it will cause a runtime error.


🏁 Script executed:

#!/bin/bash
# Check if the referenced drawable file exists
fd "bg_bottom_sheet_dialog_fragment.xml" --type f

Length of output: 111


Drawable resource verified as present

The referenced drawable resource exists at app/src/main/res/drawable/bg_bottom_sheet_dialog_fragment.xml. No further changes are necessary in the BottomSheet style declaration in app/src/main/res/values/styles.xml.

app/src/main/res/values/dimens.xml (3)

2-8: Well-defined standard dimensions

The standard dimensions for margins and UI elements are properly defined with appropriate values.


10-22: Font size arrays with good progression

The font size arrays for cover titles and chapter text are well structured with a clear progression of decreasing sizes.


38-43: Duplicate values in word spacing array

The chapter_text_word_spacing array contains duplicate values (3,3,2,2). Verify if this duplication is intentional or if it should have a proper progression like the other arrays.

app/src/main/res/values/colors.xml (2)

3-5: Theme colors properly referenced

The primary theme colors are correctly defined using references to specific color values, allowing for easier theming changes.


7-33: Comprehensive color palette

The color palette is well-defined with a good range of colors following Material Design naming conventions, which will provide consistency throughout the application.

data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/VideoRepository.kt (1)

3-3:

❓ Verification inconclusive

Consider importing specific model version.

The import from ai.elimu.model.v2.gson.content.VideoGson uses a versioned path (v2). Ensure this dependency is properly managed and there's a strategy for handling model version updates to prevent breaking changes.


🏁 Script executed:

#!/bin/bash
# Check for model dependency in the build files
grep -r "ai.elimu.model" --include="*.gradle" .

Length of output: 47


Action: Verify Dependency Version Management

The import at
data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/VideoRepository.kt:3
explicitly references ai.elimu.model.v2.gson.content.VideoGson, which hardcodes the model version (v2). Our initial automated search for dependency declarations in the Gradle build files did not return any results. This lack of output makes it unclear whether the model version is being centrally managed (for example, via version properties or dependency constraints).

Next steps:

  • Manually verify the build configuration: Please double-check the project’s Gradle files (including any supplementary configuration files) to confirm that the version for ai.elimu.model is explicitly defined or managed.
  • Assess dependency strategy: Ensure that a clear strategy is in place for updating the model version, to prevent accidental breaking changes when new versions are available.


private final static long DOUBLE_CLICK_INTERVAL = 2000;

private static long mLastClickTime = 0;
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🛠️ Refactor suggestion

Static variable could cause unintended behavior across different views.

The mLastClickTime variable is static, meaning it's shared across all instances of this listener. This could lead to unexpected behavior if multiple views use different instances of this listener - clicking one button would start the cooldown for all buttons using this listener.

Consider making this variable non-static or use a Map to track click times per view:

- private static long mLastClickTime = 0;
+ private long mLastClickTime = 0;

Or for a more robust solution:

- private static long mLastClickTime = 0;
+ private static final Map<Integer, Long> lastClickTimeMap = new HashMap<>();

@Override
final public void onClick(View v) {
    long lastClickTime = lastClickTimeMap.containsKey(v.getId()) ? 
                         lastClickTimeMap.get(v.getId()) : 0;
    if (SystemClock.elapsedRealtime() - lastClickTime < DOUBLE_CLICK_INTERVAL){
        return;
    }
    lastClickTimeMap.put(v.getId(), SystemClock.elapsedRealtime());
    
    onSingleClick(v);
}
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Suggested change
private static long mLastClickTime = 0;
private long mLastClickTime = 0;

Comment on lines +1 to +6
<resources>
<!-- Example customization of dimensions originally defined in res/values/dimens.xml
(such as screen margins) for screens with more than 820dp of available width. This
would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively). -->
<dimen name="activity_horizontal_margin">32dp</dimen>
</resources>
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⚠️ Potential issue

Resolve directory name and comment discrepancy

There's a mismatch between the directory name (values-w600dp) and the comment stating "screens with more than 820dp of available width". According to Android's resource naming conventions:

  • values-w600dp applies to screens with a minimum width of 600dp
  • If intended for 820dp+ screens, use values-w820dp instead

Either:

  1. Update the directory name to match the intent in the comment, or
  2. Update the comment to correctly reflect the 600dp threshold

This ensures developers understand the actual device configurations where these dimensions apply.

Comment on lines +9 to +26
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">

<GridLayout
android:id="@+id/grid_layout_videos"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:columnCount="@integer/gridlayout_column_count"
android:useDefaultMargins="true">

</GridLayout>
</ScrollView>
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🛠️ Refactor suggestion

Consider using RecyclerView instead of GridLayout for better performance.

While the GridLayout works for displaying videos, RecyclerView is better optimized for displaying large datasets with view recycling, lazy loading, and built-in animations.

Replace the ScrollView and GridLayout with RecyclerView:

-<ScrollView
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:fillViewport="true">
-
-    <GridLayout
-        android:id="@+id/grid_layout_videos"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:paddingTop="@dimen/activity_vertical_margin"
-        android:paddingRight="@dimen/activity_horizontal_margin"
-        android:paddingBottom="@dimen/activity_vertical_margin"
-        android:paddingLeft="@dimen/activity_horizontal_margin"
-        android:columnCount="@integer/gridlayout_column_count"
-        android:useDefaultMargins="true">
-
-    </GridLayout>
-</ScrollView>
+<androidx.recyclerview.widget.RecyclerView
+    android:id="@+id/recycler_view_videos"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:padding="@dimen/activity_horizontal_margin"
+    app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
+    app:spanCount="@integer/gridlayout_column_count"
+    tools:listitem="@layout/item_video"
+    app:layout_constraintTop_toTopOf="parent"
+    app:layout_constraintBottom_toBottomOf="parent"
+    app:layout_constraintStart_toStartOf="parent"
+    app:layout_constraintEnd_toEndOf="parent"/>

This approach will require creating:

  1. A video item layout (item_video.xml)
  2. A RecyclerView adapter implementation
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Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<GridLayout
android:id="@+id/grid_layout_videos"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:columnCount="@integer/gridlayout_column_count"
android:useDefaultMargins="true">
</GridLayout>
</ScrollView>
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recycler_view_videos"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="@dimen/activity_horizontal_margin"
app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
app:spanCount="@integer/gridlayout_column_count"
tools:listitem="@layout/item_video"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"/>

Comment on lines 20 to 27
override fun getAllVideos(onResult: (List<VideoGson>) -> Unit) {
ioScope.launch {
val videos = videoRepository.getVideos()
withContext(Dispatchers.Main) {
onResult(videos)
}
}
}
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🛠️ Refactor suggestion

Consider handling errors in the ViewModel.

Your implementation fetches videos but doesn't handle potential error cases. If the repository call fails, the error will be unhandled and the callback might never be called.

 override fun getAllVideos(onResult: (List<VideoGson>) -> Unit) {
     ioScope.launch {
-        val videos = videoRepository.getVideos()
-        withContext(Dispatchers.Main) {
-            onResult(videos)
+        try {
+            val videos = videoRepository.getVideos()
+            withContext(Dispatchers.Main) {
+                onResult(videos)
+            }
+        } catch (e: Exception) {
+            withContext(Dispatchers.Main) {
+                // Either provide an empty list or add an onError callback parameter
+                onResult(emptyList())
+                // Log the error
+                e.printStackTrace()
+            }
         }
     }
 }
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Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
override fun getAllVideos(onResult: (List<VideoGson>) -> Unit) {
ioScope.launch {
val videos = videoRepository.getVideos()
withContext(Dispatchers.Main) {
onResult(videos)
}
}
}
override fun getAllVideos(onResult: (List<VideoGson>) -> Unit) {
ioScope.launch {
try {
val videos = videoRepository.getVideos()
withContext(Dispatchers.Main) {
onResult(videos)
}
} catch (e: Exception) {
withContext(Dispatchers.Main) {
// Either provide an empty list or add an onError callback parameter
onResult(emptyList())
// Log the error
e.printStackTrace()
}
}
}
}

Comment on lines 8 to 20
public static Bitmap decodeSampledBitmap(String imageFile, int reqWidth, int reqHeight) {
// First decode with inJustDecodeBounds=true to check dimensions
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(imageFile, options);

// Calculate inSampleSize
options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);

// Decode bitmap with inSampleSize set
options.inJustDecodeBounds = false;
return BitmapFactory.decodeFile(imageFile, options);
}
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🛠️ Refactor suggestion

Add error handling for bitmap decoding.

The current implementation doesn't handle potential errors like null or invalid image files, which could cause crashes. Consider adding error handling.

-public static Bitmap decodeSampledBitmap(String imageFile, int reqWidth, int reqHeight) {
+public static Bitmap decodeSampledBitmap(String imageFile, int reqWidth, int reqHeight) {
+    if (imageFile == null) {
+        return null;
+    }
+    
+    try {
         // First decode with inJustDecodeBounds=true to check dimensions
         final BitmapFactory.Options options = new BitmapFactory.Options();
         options.inJustDecodeBounds = true;
         BitmapFactory.decodeFile(imageFile, options);
 
         // Calculate inSampleSize
         options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
 
         // Decode bitmap with inSampleSize set
         options.inJustDecodeBounds = false;
         return BitmapFactory.decodeFile(imageFile, options);
+    } catch (Exception e) {
+        e.printStackTrace();
+        return null;
+    }
 }
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Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
public static Bitmap decodeSampledBitmap(String imageFile, int reqWidth, int reqHeight) {
// First decode with inJustDecodeBounds=true to check dimensions
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(imageFile, options);
// Calculate inSampleSize
options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
// Decode bitmap with inSampleSize set
options.inJustDecodeBounds = false;
return BitmapFactory.decodeFile(imageFile, options);
}
public static Bitmap decodeSampledBitmap(String imageFile, int reqWidth, int reqHeight) {
if (imageFile == null) {
return null;
}
try {
// First decode with inJustDecodeBounds=true to check dimensions
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(imageFile, options);
// Calculate inSampleSize
options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
// Decode bitmap with inSampleSize set
options.inJustDecodeBounds = false;
return BitmapFactory.decodeFile(imageFile, options);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}

Comment on lines +12 to +15
<style name="AppTheme.NoTitle.Fullscreen" parent="AppTheme">
<item name="windowNoTitle">true</item>
<item name="android:windowFullscreen">true</item>
</style>
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🛠️ Refactor suggestion

Incorrect parent reference in AppTheme.NoTitle.Fullscreen

The style name suggests it inherits from AppTheme.NoTitle, but the parent is set to AppTheme. This means it's not inheriting the windowNoTitle property from AppTheme.NoTitle and instead redeclaring it.

-<style name="AppTheme.NoTitle.Fullscreen" parent="AppTheme">
+<style name="AppTheme.NoTitle.Fullscreen" parent="AppTheme.NoTitle">
    <item name="windowNoTitle">true</item>
    <item name="android:windowFullscreen">true</item>
</style>
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Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
<style name="AppTheme.NoTitle.Fullscreen" parent="AppTheme">
<item name="windowNoTitle">true</item>
<item name="android:windowFullscreen">true</item>
</style>
<style name="AppTheme.NoTitle.Fullscreen" parent="AppTheme.NoTitle">
<item name="windowNoTitle">true</item>
<item name="android:windowFullscreen">true</item>
</style>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="ai.elimu.filamu.data.video">

<uses-permission android:name="${contentProviderApplicationId}.provider.READ" />
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💡 Verification agent

🧩 Analysis chain

Verify placeholder substitution for custom permission.

The use of ${contentProviderApplicationId} placeholder requires proper variable definition in the build.gradle file. Ensure this property is defined in your build configuration, otherwise this permission will not resolve correctly at build time.


🏁 Script executed:

#!/bin/bash
# Check if contentProviderApplicationId is defined in the build files
grep -r "contentProviderApplicationId" --include="*.gradle" --include="*.properties" .

Length of output: 572


Ensure manifest placeholder substitution and proper module configuration

The grep output confirms that contentProviderApplicationId is defined in your app’s build.gradle file. However, since this is a new Android module (data-video), note that the corresponding manifestPlaceholders in data-video/build.gradle are currently commented out. If data-video is intended to be built as a standalone module or requires its own configuration, you must enable/use the manifestPlaceholders there to ensure that ${contentProviderApplicationId} is correctly substituted at build time.

Additional suggestions:

  • Manifest Configuration: Activate or reinstate the manifestPlaceholders in data-video/build.gradle if the module isn’t intended to inherit the configuration from app/build.gradle.
  • Commented Code: Address or document the commented-out queries section in the manifest to avoid confusion regarding incomplete functionality.
  • Permission Documentation: Add documentation (in code comments or related docs) explaining the purpose of this permission and how it integrates with your app’s content provider.

Comment on lines 24 to 33
@Override
protected void onStart() {
Log.i(getClass().getName(), "onStart");
super.onStart();

Intent intent = new Intent(this, VideosActivity.class);
startActivity(intent);

finish();
}
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🛠️ Refactor suggestion

Consider refactoring the navigation flow.

The current implementation creates MainActivity, sets its content view, then immediately redirects to VideosActivity in onStart(). This may cause UI flicker as MainActivity briefly displays before VideosActivity launches. Consider alternatives:

  1. Use a SplashScreen API for initial loading
  2. Define VideosActivity as the launcher activity in the manifest if it's the true entry point
  3. Use MainActivity purely for initialization without setting a content view

This would improve user experience and follow Android navigation best practices.

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Actionable comments posted: 0

🧹 Nitpick comments (1)
.github/workflows/gradle-build.yml (1)

16-24: Review Build Step Redundancy
The workflow includes both the usage of gradle/gradle-build-action@v3 and a direct command execution of ./gradlew clean build. Please verify whether both steps are needed. If the Gradle build action already triggers a clean build, consider removing the explicit command to avoid potential duplicate executions.

Suggested diff (if removal is preferred):

-    - run: ./gradlew clean build
📜 Review details

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Review profile: CHILL
Plan: Pro

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Reviewing files that changed from the base of the PR and between 389228f and 58513b2.

📒 Files selected for processing (5)
  • .github/workflows/gradle-build.yml (1 hunks)
  • gradle.properties (1 hunks)
  • gradlew (1 hunks)
  • gradlew.bat (1 hunks)
  • settings.gradle (1 hunks)
✅ Files skipped from review due to trivial changes (4)
  • gradle.properties
  • settings.gradle
  • gradlew.bat
  • gradlew
🔇 Additional comments (2)
.github/workflows/gradle-build.yml (2)

1-8: CI Trigger Configuration is Set Up Correctly
The workflow correctly triggers on pushes and pull requests to the main branch, which is standard practice.


9-15: Matrix Strategy Configuration is Comprehensive
The matrix is well configured to run builds across multiple operating systems (Ubuntu, macOS, Windows) and Java versions (17 and 21), ensuring broad compatibility testing.

@tuancoltech tuancoltech changed the title Init codebase WIP: Init codebase Mar 10, 2025
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Actionable comments posted: 0

🧹 Nitpick comments (4)
app/src/main/java/ai/elimu/filamu/BaseApplication.kt (1)

10-13: Add Timber initialization

The code uses Timber for logging but doesn't initialize it. For proper logging, especially in debug builds, you should add Timber initialization:

override fun onCreate() {
    super.onCreate()
+   if (BuildConfig.DEBUG) {
+       Timber.plant(Timber.DebugTree())
+   }
    Timber.tag(javaClass.name).i("onCreate")
}

This ensures logs are only visible in debug builds and properly formatted.

build.gradle (2)

1-2: Kotlin KAPT Plugin Application

The 'kotlin-kapt' plugin is applied at the root level. Please verify whether all sub-modules require it or if it might be better scoped to only those modules needing annotation processing.


5-10: Kotlin Version Declaration in Buildscript

The Kotlin version is set to '2.0.0' through the ext block. Please confirm that this version is intended and compatible with the rest of the project’s dependencies. If it is experimental or a placeholder, consider updating to a stable release.

gradle/libs.versions.toml (1)

1-23: Centralized Version Management

The [versions] section effectively centralizes dependency versions, enhancing maintainability. However, note the discrepancy: hilt is set to "2.50" while hiltAndroidPlugin is set to "2.48". Please verify that this difference is intentional and will not cause compatibility issues.

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Review profile: CHILL
Plan: Pro

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Reviewing files that changed from the base of the PR and between 58513b2 and db5dbc8.

📒 Files selected for processing (5)
  • app/build.gradle (1 hunks)
  • app/src/androidTest/java/ai/elimu/filamu/ExampleInstrumentedTest.java (1 hunks)
  • app/src/main/java/ai/elimu/filamu/BaseApplication.kt (1 hunks)
  • build.gradle (1 hunks)
  • gradle/libs.versions.toml (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (2)
  • app/src/androidTest/java/ai/elimu/filamu/ExampleInstrumentedTest.java
  • app/build.gradle
🔇 Additional comments (7)
app/src/main/java/ai/elimu/filamu/BaseApplication.kt (1)

1-14: LGTM: Clean application class implementation with Hilt

The BaseApplication class is correctly set up with the @HiltAndroidApp annotation, making it the entry point for Hilt dependency injection. The implementation is minimal and focused on its primary responsibility.

Note: Previous review comments mentioned TextToSpeech implementation that's no longer present. If this was deliberately removed because it's not needed for a video app (as questioned by a reviewer), then this change is appropriate.

build.gradle (4)

11-16: Buildscript Repository Configuration

The buildscript repositories include google(), mavenCentral(), and mavenLocal(), ensuring a broad range for dependency resolution. This setup is clear and well-configured.


25-35: Allprojects Repository Configuration

The allprojects block is set up to include essential repositories including the additional JitPack repository. This provides robust dependency resolution for all sub-modules.


37-40: Clean Task Definition

The custom clean task correctly deletes the build directory of the root project, which is a standard practice in Android projects.


16-23:

❓ Verification inconclusive

Buildscript Dependencies and Hilt Plugin Version Consistency

The dependencies block properly includes the Android Gradle plugin, Kotlin Gradle plugin (using the declared Kotlin version), and Hilt’s Gradle plugin (version 2.50). However, please verify that the Hilt plugin version aligns with the version declared in your libs.versions.toml file for consistency across the project.


Below is a shell script that checks for any Hilt version declaration in your project's libs.versions.toml file. This will help verify whether the Hilt plugin version (2.50) used in your build.gradle is consistent with what’s declared in the version catalog:

Please run this script and share the output so we can determine if the Hilt plugin version in your version catalog aligns with the one in build.gradle.


🏁 Script executed:

#!/bin/bash
# Check if libs.versions.toml exists and display any Hilt-related version entries.
if [ -f libs.versions.toml ]; then
  echo "Found libs.versions.toml. Hilt version details:"
  grep -i 'hilt' libs.versions.toml || echo "No Hilt version specified in libs.versions.toml."
else
  echo "libs.versions.toml file not found in the repository."
fi

Length of output: 146


Hilt Plugin Version Consistency in Buildscript

The dependencies block in build.gradle properly includes the Android Gradle plugin, Kotlin Gradle plugin, and Hilt's Gradle plugin at version 2.50. However, since the libs.versions.toml file was not found in the repository, we cannot verify version consistency against a version catalog. Please confirm if you intend to use a version catalog for dependency management. If so, consider adding the Hilt version to libs.versions.toml for consistency; if not, you may safely disregard this consistency check.

gradle/libs.versions.toml (2)

24-48: Library Dependencies Declaration

The [libraries] section maps libraries to their respective group and artifact identifiers using the referenced versions. This approach is clean and promotes consistency. No issues detected in this section.


49-53: Plugin Version Management

The [plugins] section defines important plugins with version references. Please confirm that the version referenced for hilt-android (via hiltAndroidPlugin, currently "2.48") is consistent with project expectations—especially given the Hilt dependency in the buildscript is set to "2.50".

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Actionable comments posted: 3

🧹 Nitpick comments (6)
app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (6)

32-33: Use lateinit instead of nullable properties

Since these views are always initialized in onCreate() before being used in onStart(), it's better to use lateinit instead of nullable types to avoid unnecessary null checks and potential null pointer exceptions.

-    private var videosGridLayout: GridLayout? = null
-    private var videosProgressBar: ProgressBar? = null
+    private lateinit var videosGridLayout: GridLayout
+    private lateinit var videosProgressBar: ProgressBar

38-38: Define TAG as a companion object constant

The TAG variable should be defined as a constant in a companion object for better code organization and to follow Android conventions.

-    var TAG: String = VideosActivity::class.java.name
+    companion object {
+        private const val TAG = "VideosActivity"
+        // Other constants can be placed here
+    }

53-55: Inconsistent logging usage

You're mixing Log and Timber throughout the code. Stick to Timber for all logging for better consistency and control.

-        Log.i(javaClass.name, "onStart")
+        Timber.tag(TAG).i("onStart")

83-84: Use string templates and format strings for logging

String concatenation in logs is less efficient and harder to read. Use string templates or format strings for cleaner logs.

-                Timber.tag(TAG).i("video.getId(): " + video.id)
-                Timber.tag(TAG).i("video.getTitle(): \"" + video.title + "\"")
+                Timber.tag(TAG).i("video.getId(): %d", video.id)
+                Timber.tag(TAG).i("video.getTitle(): \"%s\"", video.title)

-                    Timber.tag(TAG).d("Extracting thumb for video id: " + finalVideo.id)
-                    Timber.tag(TAG).d("thumb.w: " + thumb?.width + ". h: " + thumb?.height + ". videoID: " + finalVideo.id)
+                    Timber.tag(TAG).d("Extracting thumb for video id: %d", finalVideo.id)
+                    Timber.tag(TAG).d("thumb.w: %d, h: %d, videoID: %d", thumb?.width, thumb?.height, finalVideo.id)

-                        Log.i(TAG, "onClick")
-                        Log.i(TAG, "video.getId(): " + finalVideo.id)
-                        Log.i(TAG, "video.getTitle(): " + finalVideo.title)
+                        Timber.tag(TAG).i("onClick")
+                        Timber.tag(TAG).i("video.getId(): %d", finalVideo.id)
+                        Timber.tag(TAG).i("video.getTitle(): %s", finalVideo.title)

Also applies to: 91-94, 111-114


109-123: Extract click listener to a separate method

The anonymous click listener implementation makes the code verbose and harder to read. Extract it to a separate method:

-                videoView.root.setOnClickListener(object : SingleClickListener() {
-                    override fun onSingleClick(v: View?) {
-                        Log.i(TAG, "onClick")
-
-                        Log.i(TAG, "video.getId(): " + finalVideo.id)
-                        Log.i(TAG, "video.getTitle(): " + finalVideo.title)
-
-                        val intent = Intent(applicationContext, VideoActivity::class.java)
-                        intent.putExtra(
-                            VideoActivity.EXTRA_KEY_VIDEO_ID,
-                            finalVideo.id
-                        )
-                        startActivity(intent)
-                    }
-                })
+                videoView.root.setOnClickListener(createVideoClickListener(finalVideo))

// Add this method outside the loop
private fun createVideoClickListener(video: VideoGson): View.OnClickListener {
    return object : SingleClickListener() {
        override fun onSingleClick(v: View?) {
            Timber.tag(TAG).i("onClick - video.getId(): %d, video.getTitle(): %s", video.id, video.title)
            
            val intent = Intent(applicationContext, VideoActivity::class.java)
            intent.putExtra(VideoActivity.EXTRA_KEY_VIDEO_ID, video.id)
            startActivity(intent)
        }
    }
}

1-135: Consider adding pagination for better performance

Loading all videos and thumbnails at once can be inefficient, especially if there are many videos. Consider implementing pagination or lazy loading to improve the user experience.

Here's a high-level approach:

  1. Modify the ViewModel to support loading videos in batches
  2. Add scroll listener to detect when user is nearing the end of the current list
  3. Load more videos when needed

This would reduce initial load time and memory usage, particularly for users with large video libraries.

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📒 Files selected for processing (2)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (1 hunks)
  • app/src/main/java/ai/elimu/filamu/util/SingleClickListener.kt (1 hunks)
🔇 Additional comments (2)
app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (2)

58-60: Avoid using !! operators with nullable UI components

Using !! operators can lead to NullPointerExceptions if the views are null. Instead, use safe calls (?.) or lateinit for properties that are guaranteed to be initialized in onCreate().

-        videosProgressBar!!.visibility = View.VISIBLE
-        videosGridLayout!!.visibility = View.GONE
-        videosGridLayout!!.removeAllViews()
+        videosProgressBar?.visibility = View.VISIBLE
+        videosGridLayout?.visibility = View.GONE
+        videosGridLayout?.removeAllViews()

Alternatively, consider using lateinit for these properties:

private lateinit var videosGridLayout: GridLayout
private lateinit var videosProgressBar: ProgressBar

76-102: Improve coroutine management and error handling

The nested coroutines can lead to memory leaks as they're not tied to the activity's lifecycle. Also, there's no error handling for the thumbnail extraction process.

     private fun showVideos(videos: List<VideoGson>) {
-        CoroutineScope(Dispatchers.IO).launch {
+        // Use lifecycle-aware coroutine scope
+        lifecycleScope.launch(Dispatchers.IO) {
             var video: VideoGson

             // Create a View for each Video in the list
             for (index in videos.indices) {
                 video = videos[index]
                 Timber.tag(TAG).i("video.getId(): " + video.id)
                 Timber.tag(TAG).i("video.getTitle(): \"" + video.title + "\"")

                 var thumb: Bitmap?
                 val finalVideo = video
                 val videoView = ActivityVideosCoverViewBinding.inflate(layoutInflater, videosGridLayout, false)
-                CoroutineScope(Dispatchers.IO).launch {
-                    val videoBytes = readVideoBytes(finalVideo.id) ?: return@launch
-                    Timber.tag(TAG).d("Extracting thumb for video id: " + finalVideo.id)
-                    thumb = [email protected](videoBytes)
-                    Timber.tag(TAG)
-                        .d("thumb.w: " + thumb?.width + ". h: " + thumb?.height + ". videoID: " + finalVideo.id)
-                    withContext(Dispatchers.Main) {
-                        val coverImageView =
-                            videoView.coverImageView
-                        thumb?.let {
-                            Glide.with(this@VideosActivity).load(thumb).into(coverImageView)
-                        }
-                    }
+                try {
+                    val videoBytes = readVideoBytes(finalVideo.id) ?: continue
+                    Timber.tag(TAG).d("Extracting thumb for video id: %d", finalVideo.id)
+                    thumb = extractFirstFrameFromVideo(videoBytes)
+                    Timber.tag(TAG).d("thumb.w: %d, h: %d, videoID: %d", 
+                        thumb?.width, thumb?.height, finalVideo.id)
+                    withContext(Dispatchers.Main) {
+                        thumb?.let {
+                            Glide.with(this@VideosActivity)
+                                .load(it)
+                                .into(videoView.coverImageView)
+                        }
+                    }
+                } catch (e: Exception) {
+                    Timber.tag(TAG).e(e, "Failed to process video id: %d", finalVideo.id)
                 }

Comment on lines 1 to 26
package ai.elimu.filamu.util

import android.os.SystemClock
import android.view.View

/**
* Prevent double click
*/
abstract class SingleClickListener : View.OnClickListener {
override fun onClick(v: View) {
if (SystemClock.elapsedRealtime() - mLastClickTime < DOUBLE_CLICK_INTERVAL) {
return
}
mLastClickTime = SystemClock.elapsedRealtime()

onSingleClick(v)
}

abstract fun onSingleClick(v: View?)

companion object {
private const val DOUBLE_CLICK_INTERVAL: Long = 2000

private var mLastClickTime: Long = 0
}
}
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💡 Verification agent

🧩 Analysis chain

Functionality looks correct but has potential design issues

The implementation effectively prevents double-clicks using SystemClock.elapsedRealtime(), but there's an important design consideration to address.

The mLastClickTime variable is defined in the companion object, making it static across all instances of this class. This means all UI elements using this listener will share the same debounce timer, which could cause unexpected behavior if users click different elements in quick succession.

Consider these improvements:

  1. Make mLastClickTime an instance variable instead of static to isolate debounce timers per instance
  2. Consider renaming variables to follow Kotlin conventions (drop the 'm' prefix)
  3. Make onSingleClick parameter non-nullable to match onClick
abstract class SingleClickListener : View.OnClickListener {
+    private var lastClickTime: Long = 0
+    private val doubleClickInterval: Long = 2000
    
    override fun onClick(v: View) {
-        if (SystemClock.elapsedRealtime() - mLastClickTime < DOUBLE_CLICK_INTERVAL) {
+        if (SystemClock.elapsedRealtime() - lastClickTime < doubleClickInterval) {
            return
        }
-        mLastClickTime = SystemClock.elapsedRealtime()
+        lastClickTime = SystemClock.elapsedRealtime()

        onSingleClick(v)
    }

-    abstract fun onSingleClick(v: View?)
+    abstract fun onSingleClick(v: View)

    companion object {
-        private const val DOUBLE_CLICK_INTERVAL: Long = 2000
-
-        private var mLastClickTime: Long = 0
+        private const val DEFAULT_DOUBLE_CLICK_INTERVAL: Long = 2000
    }
}

🏁 Script executed:

#!/bin/bash
# Search for usages of SingleClickListener in the codebase to understand impact
echo "Searching for SingleClickListener usages:"
rg -A 2 "SingleClickListener" --glob "*.kt" --glob "*.java"

Length of output: 1190


Refactor SingleClickListener to use instance-specific debounce timer

The current implementation uses a static variable (mLastClickTime in the companion object) to prevent double clicks, which causes all UI elements using this listener to share the same debounce timer. This can lead to unexpected behavior when users interact with different elements in quick succession.

Suggestions:

  • Convert mLastClickTime to an instance variable (e.g., lastClickTime) so that each listener instance maintains its own state.
  • Rename variables to follow Kotlin conventions (e.g., drop the m prefix).
  • Change onSingleClick to accept a non-nullable View parameter to align with the onClick signature.

Diff Example:

-    override fun onClick(v: View) {
-        if (SystemClock.elapsedRealtime() - mLastClickTime < DOUBLE_CLICK_INTERVAL) {
-            return
-        }
-        mLastClickTime = SystemClock.elapsedRealtime()
-
-        onSingleClick(v)
-    }
-
-    abstract fun onSingleClick(v: View?)
-
-    companion object {
-        private const val DOUBLE_CLICK_INTERVAL: Long = 2000
-
-        private var mLastClickTime: Long = 0
-    }
+    private var lastClickTime: Long = 0
+    private val doubleClickInterval: Long = 2000
+
+    override fun onClick(v: View) {
+        if (SystemClock.elapsedRealtime() - lastClickTime < doubleClickInterval) {
+            return
+        }
+        lastClickTime = SystemClock.elapsedRealtime()
+
+        onSingleClick(v)
+    }
+
+    abstract fun onSingleClick(v: View)
+
+    companion object {
+        private const val DEFAULT_DOUBLE_CLICK_INTERVAL: Long = 2000
+    }

Given that the usage in VideosActivity.kt confirms the listener is applied widely, addressing these changes is essential to avoid cross-instance interference.

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Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
package ai.elimu.filamu.util
import android.os.SystemClock
import android.view.View
/**
* Prevent double click
*/
abstract class SingleClickListener : View.OnClickListener {
override fun onClick(v: View) {
if (SystemClock.elapsedRealtime() - mLastClickTime < DOUBLE_CLICK_INTERVAL) {
return
}
mLastClickTime = SystemClock.elapsedRealtime()
onSingleClick(v)
}
abstract fun onSingleClick(v: View?)
companion object {
private const val DOUBLE_CLICK_INTERVAL: Long = 2000
private var mLastClickTime: Long = 0
}
}
package ai.elimu.filamu.util
import android.os.SystemClock
import android.view.View
/**
* Prevent double click
*/
abstract class SingleClickListener : View.OnClickListener {
private var lastClickTime: Long = 0
private val doubleClickInterval: Long = 2000
override fun onClick(v: View) {
if (SystemClock.elapsedRealtime() - lastClickTime < doubleClickInterval) {
return
}
lastClickTime = SystemClock.elapsedRealtime()
onSingleClick(v)
}
abstract fun onSingleClick(v: View)
companion object {
private const val DEFAULT_DOUBLE_CLICK_INTERVAL: Long = 2000
}
}

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Actionable comments posted: 3

🧹 Nitpick comments (4)
app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt (4)

91-91: Inconsistent logging approach

The code inconsistently uses both Log.v and Timber for logging. Standardize on Timber throughout the codebase for better logging control and consistency.

-                        Log.v(TAG, "onPlaybackStateChanged: " + playbackState)
+                        Timber.tag(TAG).v("onPlaybackStateChanged: %d", playbackState)

40-115: Refactor the large onCreate method for better readability

The onCreate method is quite lengthy and performs multiple distinct operations. Consider refactoring it into smaller, focused methods to improve readability and maintainability.

Here's a suggested refactoring approach:

override fun onCreate(savedInstanceState: Bundle?) {
    Timber.tag(TAG).i("onCreate")
    super.onCreate(savedInstanceState)

    binding = ActivityVideoBinding.inflate(layoutInflater)
    setContentView(binding.root)

    val videoId = intent.getLongExtra(EXTRA_KEY_VIDEO_ID, 0)
    Timber.tag(TAG).i("videoId: $videoId")

-   val renderersFactory = DefaultRenderersFactory(this).setEnableDecoderFallback(true)
-       .setExtensionRendererMode(DefaultRenderersFactory.EXTENSION_RENDERER_MODE_PREFER)
-
-   val trackSelector = DefaultTrackSelector(this).apply {
-       setParameters(
-           buildUponParameters()
-               .setAllowAudioMixedMimeTypeAdaptiveness(true)
-               .setAllowVideoMixedMimeTypeAdaptiveness(true)
-               .setForceLowestBitrate(false)
-       )
-   }
-
-   videoPlayer = ExoPlayer.Builder(this)
-       .setRenderersFactory(renderersFactory)
-       .setTrackSelector(trackSelector)
-       .build()
-   binding.playerView.player = videoPlayer
+   initializePlayer()

-   CoroutineScope(Dispatchers.IO).launch {
-       // ... rest of the coroutine code
-   }
+   loadAndPlayVideo(videoId)
}

+@OptIn(UnstableApi::class)
+private fun initializePlayer() {
+    val renderersFactory = DefaultRenderersFactory(this).setEnableDecoderFallback(true)
+        .setExtensionRendererMode(DefaultRenderersFactory.EXTENSION_RENDERER_MODE_PREFER)
+
+    val trackSelector = DefaultTrackSelector(this).apply {
+        setParameters(
+            buildUponParameters()
+                .setAllowAudioMixedMimeTypeAdaptiveness(true)
+                .setAllowVideoMixedMimeTypeAdaptiveness(true)
+                .setForceLowestBitrate(false)
+        )
+    }
+
+    videoPlayer = ExoPlayer.Builder(this)
+        .setRenderersFactory(renderersFactory)
+        .setTrackSelector(trackSelector)
+        .build()
+    binding.playerView.player = videoPlayer
+    setupPlayerListeners()
+}
+
+private fun setupPlayerListeners() {
+    videoPlayer.addListener(object : Player.Listener {
+        override fun onPlaybackStateChanged(playbackState: Int) {
+            super.onPlaybackStateChanged(playbackState)
+            Timber.tag(TAG).v("onPlaybackStateChanged: %d", playbackState)
+        }
+
+        override fun onPlayerError(error: PlaybackException) {
+            super.onPlayerError(error)
+            Timber.tag(TAG)
+                .e("onPlayerError: ${error.errorCode}\nmessage: ${error.message}\ncause: ${error.cause}")
+        }
+
+        override fun onRenderedFirstFrame() {
+            super.onRenderedFirstFrame()
+            Timber.tag(TAG).d("onRenderedFirstFrame")
+        }
+    })
+}
+
+@OptIn(UnstableApi::class)
+private fun loadAndPlayVideo(videoId: Long) {
+    lifecycleScope.launch(Dispatchers.IO) {
+        val videoBytes = readVideoBytes(videoId) ?: return@launch
+        val videoCodec = detectVideoCodec(this@VideoActivity, videoBytes)
+
+        val codecInfo = videoCodec?.let { MediaCodecUtil.getDecoderInfo(it, false, false) }
+        Timber.tag(TAG).d("Decoder: ${codecInfo?.name ?: "Not Found"}")
+
+        Timber.tag(TAG).d("videoBytes.length: ${videoBytes.size}. codec: $videoCodec")
+        withContext(Dispatchers.Main) {
+            prepareAndPlayVideo(videoBytes, videoCodec)
+        }
+    }
+}
+
+@OptIn(UnstableApi::class)
+private fun prepareAndPlayVideo(videoBytes: ByteArray, videoCodec: String?) {
+    // Create MediaSource from ByteArray
+    val dataSourceFactory = ByteArrayDataSourceFactory(videoBytes)
+    val mediaItem = MediaItem.Builder().setUri(Uri.EMPTY)
+        .setMimeType(videoCodec ?: MimeTypes.VIDEO_H264)
+        .build()
+
+    val mediaSource = ProgressiveMediaSource.Factory(dataSourceFactory)
+        .createMediaSource(mediaItem)
+
+    // Prepare and play
+    videoPlayer.setMediaSource(mediaSource)
+    videoPlayer.playWhenReady = true
+    videoPlayer.prepare()
+    videoPlayer.play()
+}

143-144: Improve exception handling

The catch block only prints the stack trace but does not log the exception details with Timber, which would be consistent with the rest of the code and provide better error reporting.

    } catch (e: Exception) {
-       e.printStackTrace()
+       Timber.tag(TAG).e(e, "Error detecting video codec")
        null
    }

95-97: Improve error handling UI feedback

When a player error occurs, the app only logs the error but doesn't provide any feedback to the user. Consider adding a user-facing error message or fallback behavior.

    override fun onPlayerError(error: PlaybackException) {
        super.onPlayerError(error)
        Timber.tag(TAG)
            .e("onPlayerError: " + error.errorCode + "\nmessage: " + error.message + "\ncause: " + error.cause)
+       // Show error message to user
+       binding.errorText.visibility = android.view.View.VISIBLE
+       binding.errorText.text = "Unable to play video: ${error.message}"
    }

Note: You'll need to add an error text view to your layout file.

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📥 Commits

Reviewing files that changed from the base of the PR and between 0c9c95d and 981e46f.

📒 Files selected for processing (3)
  • app/src/main/AndroidManifest.xml (1 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt (1 hunks)
  • app/src/main/java/ai/elimu/filamu/util/VideoProviderExt.kt (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (2)
  • app/src/main/AndroidManifest.xml
  • app/src/main/java/ai/elimu/filamu/util/VideoProviderExt.kt
🔇 Additional comments (1)
app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt (1)

51-61:

❓ Verification inconclusive

Consider adding content protection for DRM-protected videos

The current setup doesn't include any DRM or content protection configuration. If your app needs to support protected content, consider adding appropriate DRM modules.


🌐 Web query:

Does ExoPlayer media3 support DRM protection?

💡 Result:

ExoPlayer Media3 provides robust support for DRM-protected content through Android's MediaDrm API, enabling secure playback of encrypted media across various streaming formats. Here's a detailed breakdown of its capabilities:

Supported DRM Schemes

ExoPlayer Media3 integrates with major DRM providers:

  • Widevine (Google): Supported on Android 4.4+ for DASH/HLS (FMP4)
  • ClearKey (Unencrypted key delivery): Supported on Android 5.0+ for DASH
  • PlayReady (Microsoft): Available on Android TV for DASH/SmoothStreaming
DRM Scheme Minimum Android Version Supported Formats
Widevine "cenc" 4.4 (API 19) DASH, HLS (FMP4)
Widevine "cbcs" 7.1 (API 25) DASH, HLS (FMP4)
ClearKey 5.0 (API 21) DASH
PlayReady SL2000 Android TV DASH, SmoothStreaming, HLS (FMP4)

[1][3][7]

Key Implementation Features

  1. License Configuration:

    • Specify DRM UUID and license server URL when building MediaItem
    • Add custom headers for license requests using setLicenseRequestHeaders [2][6]
    • Example code for DRM setup:
      val drmConfig = MediaItem.DrmConfiguration.Builder(C.WIDEVINE_UUID)
          .setLicenseUri("https://license.server.url")
          .setMultiSession(true) // For key rotation
          .build()
  2. Advanced DRM Features:

    • Key Rotation: Enable via setMultiSession(true)[7]
    • Offline Playback: Supported if license permits[2]
    • Placeholder Sessions: Avoid decoder reinitialization between encrypted/clear content using forceSessionsForAudioAndVideoTracks[7]
  3. Customization:

    • Extend DefaultDrmSessionManager for complex use cases
    • Implement DrmSessionManagerProvider to override session management[7]

Device Considerations

  • Widevine L1 (hardware-level security) availability varies by device
  • Android 7.0+ recommended for reliable Widevine support[3][6]
  • ClearKey implementations may require additional testing (as noted in troubleshooting scenarios)[8]

For developers using Jetpack Media3, the ExoPlayer.Builder simplifies integration, while extensions like [Paid] Media3 offer enhanced features such as custom UI controls and brightness adjustment[1]. Always verify DRM server compatibility and test across target Android versions due to fragmentation in DRM support[3][7].

Citations:


DRM Configuration for Protected Content

We've verified that ExoPlayer Media3 provides robust DRM support through Android's MediaDrm API (including Widevine, ClearKey, and, on Android TV, PlayReady). The current implementation in VideoActivity.kt (lines 51–61) sets up the player for standard playback but doesn’t include DRM handling. If your app is expected to support encrypted or DRM-protected content, consider integrating DRM configuration. For example, you could enhance your MediaItem setup as follows:

val drmConfig = MediaItem.DrmConfiguration.Builder(C.WIDEVINE_UUID)
    .setLicenseUri("https://your.license.server.url")
    .setMultiSession(true) // Enables key rotation for secure streaming
    .build()

val mediaItem = MediaItem.Builder()
    .setUri(videoUri)
    .setDrmConfiguration(drmConfig)
    .build()
  • Action: Review whether DRM support is required for your content.
  • Next Steps: If DRM is needed, integrate the DRM configuration into your MediaItem and ensure your player initialization accommodates DRM-protected streams.

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Actionable comments posted: 3

🧹 Nitpick comments (2)
app/src/main/java/ai/elimu/filamu/MainActivity.kt (1)

24-33: Consider simplifying the navigation flow

Currently, MainActivity's sole purpose appears to be launching VideosActivity and then finishing itself. Consider alternatives:

  1. Make VideosActivity the launcher activity directly in the manifest
  2. Use a splash screen implementation if a loading/intro screen is needed
  3. If the content-provider verification is critical, consider showing an error message if it fails instead of proceeding
app/src/test/java/ai/elimu/filamu/ExampleUnitTest.kt (1)

7-17: Replace placeholder test with meaningful tests

This is a template test generated by Android Studio that doesn't verify any actual application functionality. As the codebase grows, consider:

  1. Creating specific test classes for each component (e.g., MainActivityTest, VideosActivityTest)
  2. Testing actual business logic and UI interactions
  3. Following a consistent naming pattern for test methods (e.g., should_performAction_when_condition)
// Example of meaningful test in Kotlin
@Test
fun shouldNavigateToVideosActivity_whenActivityStarts() {
    // Test implementation
}
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📒 Files selected for processing (3)
  • app/src/androidTest/java/ai/elimu/filamu/ExampleInstrumentedTest.kt (1 hunks)
  • app/src/main/java/ai/elimu/filamu/MainActivity.kt (1 hunks)
  • app/src/test/java/ai/elimu/filamu/ExampleUnitTest.kt (1 hunks)
🔇 Additional comments (1)
app/src/main/java/ai/elimu/filamu/MainActivity.kt (1)

19-22: Implement the TODO for content-provider verification

The TODO comment indicates a critical verification step is needed to check if the dependent content-provider APK is installed. This should be implemented before merging, especially since the PR description mentions this PR depends on another content-provider PR.

Could you please elaborate on how the content-provider verification should be implemented? Consider checking for the content provider's authority using getPackageManager().resolveContentProvider().

Comment on lines 1 to 27
package ai.elimu.filamu;

import android.content.Context;

import androidx.test.platform.app.InstrumentationRegistry;
import androidx.test.ext.junit.runners.AndroidJUnit4;

import org.junit.Test;
import org.junit.runner.RunWith;

import static org.junit.Assert.*;

/**
* Instrumented test, which will execute on an Android device.
*
* @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
*/
@RunWith(AndroidJUnit4.class)
public class ExampleInstrumentedTest {
@Test
public void useAppContext() {
// Context of the app under test.
Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();

assertEquals("ai.elimu.filamu", appContext.getPackageName());
}
}
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🛠️ Refactor suggestion

Convert Java code to Kotlin syntax

This file has a .kt extension indicating it should be Kotlin code, but the content is written in Java syntax. Consider converting it to Kotlin to maintain consistency with the file extension.

-package ai.elimu.filamu;
+package ai.elimu.filamu
 
-import android.content.Context;
+import android.content.Context
 
-import androidx.test.platform.app.InstrumentationRegistry;
-import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
 
-import org.junit.Test;
-import org.junit.runner.RunWith;
+import org.junit.Test
+import org.junit.runner.RunWith
 
-import static org.junit.Assert.*;
+import org.junit.Assert.assertEquals
 
 /**
  * Instrumented test, which will execute on an Android device.
  *
  * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
  */
-@RunWith(AndroidJUnit4.class)
-public class ExampleInstrumentedTest {
-    @Test
-    public void useAppContext() {
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
         // Context of the app under test.
-        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
 
-        assertEquals("ai.elimu.filamu", appContext.getPackageName());
-    }
+        assertEquals("ai.elimu.filamu", appContext.packageName)
+    }
 }

Additionally, as this PR initializes the codebase, consider adding more comprehensive tests beyond this example test in future PRs.

📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
package ai.elimu.filamu;
import android.content.Context;
import androidx.test.platform.app.InstrumentationRegistry;
import androidx.test.ext.junit.runners.AndroidJUnit4;
import org.junit.Test;
import org.junit.runner.RunWith;
import static org.junit.Assert.*;
/**
* Instrumented test, which will execute on an Android device.
*
* @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
*/
@RunWith(AndroidJUnit4.class)
public class ExampleInstrumentedTest {
@Test
public void useAppContext() {
// Context of the app under test.
Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
assertEquals("ai.elimu.filamu", appContext.getPackageName());
}
}
package ai.elimu.filamu
import android.content.Context
import androidx.test.platform.app.InstrumentationRegistry
import androidx.test.ext.junit.runners.AndroidJUnit4
import org.junit.Test
import org.junit.runner.RunWith
import org.junit.Assert.assertEquals
/**
* Instrumented test, which will execute on an Android device.
*
* @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
*/
@RunWith(AndroidJUnit4::class)
class ExampleInstrumentedTest {
@Test
fun useAppContext() {
// Context of the app under test.
val appContext = InstrumentationRegistry.getInstrumentation().targetContext
assertEquals("ai.elimu.filamu", appContext.packageName)
}
}

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Actionable comments posted: 4

♻️ Duplicate comments (2)
app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt (2)

72-74: ⚠️ Potential issue

Hardcoded MIME type may cause playback issues

The code uses a hardcoded MIME type MimeTypes.VIDEO_H264 without checking the actual format of the video. This could lead to playback issues if the video uses a different codec.

Consider implementing a codec detection mechanism and using the detected MIME type for playback:

-            val mediaItem = MediaItem.Builder().setUri(Uri.EMPTY)
-                .setMimeType(MimeTypes.VIDEO_H264)
-                .build()
+            // Detect the codec first
+            val detectedMimeType = detectVideoCodec(bytes)
+            
+            val mediaItem = MediaItem.Builder().setUri(Uri.EMPTY)
+                .setMimeType(detectedMimeType ?: MimeTypes.VIDEO_H264) // Fallback to H264
+                .build()

66-103: 🛠️ Refactor suggestion

Use lifecycleScope with coroutines instead of callbacks

The current implementation uses callbacks which creates nested code that could be simplified with coroutines. Using lifecycleScope ensures the coroutine is canceled if the activity is destroyed.

-        videoViewModel.readVideoBytes(videoId) { bytes ->
-            bytes ?: return@readVideoBytes
-            Timber.tag(TAG).d("videoBytes.length: " + bytes?.size)
+        lifecycleScope.launch {
+            val bytes = videoViewModel.readVideoBytes(videoId) ?: return@launch
+            Timber.tag(TAG).d("videoBytes.length: " + bytes.size)

             // Create MediaSource from ByteArray
             val dataSourceFactory = ByteArrayDataSourceFactory(bytes)
             val mediaItem = MediaItem.Builder().setUri(Uri.EMPTY)
                 .setMimeType(MimeTypes.VIDEO_H264)
                 .build()

             val mediaSource = ProgressiveMediaSource.Factory(dataSourceFactory)
                 .createMediaSource(mediaItem)

             videoPlayer.addListener(object : Player.Listener {
                 // listeners
             })

             // Prepare and play
             videoPlayer.setMediaSource(mediaSource)
             videoPlayer.playWhenReady = true
             videoPlayer.prepare()
             videoPlayer.play()
-        }
+        }

This assumes you've also updated your VideoViewModel interface to use suspend functions instead of callbacks.

Make sure to add the appropriate import:

import androidx.lifecycle.lifecycleScope
🧹 Nitpick comments (7)
data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/VideoRepository.kt (1)

6-10: Interface looks clean but would benefit from documentation

The VideoRepository interface is well-structured with appropriate suspend functions for asynchronous operations. Consider adding KDoc comments to explain the purpose of each method, expected behavior, and possible error conditions.

 interface VideoRepository {
+    /**
+     * Retrieves all available videos from the data source.
+     * @return A list of VideoGson objects
+     */
     suspend fun getVideos(): List<VideoGson>
+    
+    /**
+     * Reads the byte content of a video file.
+     * @param fileId The unique identifier of the video file
+     * @return The video content as ByteArray or null if the file cannot be read
+     */
     suspend fun readVideoBytes(fileId: Long): ByteArray?
+    
+    /**
+     * Extracts the first frame from a video file's byte content.
+     * @param videoBytes The byte content of the video file
+     * @return The first frame as a Bitmap or null if extraction fails
+     */
     suspend fun extractFirstFrameFromVideo(videoBytes: ByteArray): Bitmap?
 }
data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/local/LocalVideoDataSource.kt (1)

6-10: Interface is well-structured but lacks documentation

The LocalVideoDataSource interface appropriately uses suspend functions for asynchronous operations. Consider adding KDoc comments to document the purpose, parameters, return values, and potential exceptions of each method to improve maintainability.

 interface LocalVideoDataSource {
+    /**
+     * Retrieves all available videos from the local data source.
+     * @return A list of VideoGson objects
+     */
     suspend fun getVideos(): List<VideoGson>
+    
+    /**
+     * Reads the byte content of a video file from the local storage.
+     * @param fileId The unique identifier of the video file
+     * @return The video content as ByteArray or null if the file cannot be read
+     */
     suspend fun readVideoBytes(fileId: Long): ByteArray?
+    
+    /**
+     * Extracts the first frame from a video file's byte content.
+     * @param videoBytes The byte content of the video file
+     * @return The first frame as a Bitmap or null if extraction fails
+     */
     suspend fun extractFirstFrameFromVideo(videoBytes: ByteArray): Bitmap?
 }
app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt (2)

79-96: Inconsistent logging practices

The class uses both Timber and Log for logging. For consistency, prefer using Timber throughout the entire class.

                override fun onPlaybackStateChanged(playbackState: Int) {
                    super.onPlaybackStateChanged(playbackState)
-                    Log.v(TAG, "onPlaybackStateChanged: " + playbackState)
+                    Timber.tag(TAG).v("onPlaybackStateChanged: %d", playbackState)
                }

111-113: Use Hilt's ViewModel injection instead of ViewModelProvider

Since the activity is annotated with @AndroidEntryPoint, you should use Hilt for ViewModel injection rather than ViewModelProvider.

-    private fun initViewModels() {
-        videoViewModel = ViewModelProvider(this)[VideoViewModelImpl::class.java]
-    }
+    @Inject
+    lateinit var videoViewModel: VideoViewModel
+
+    private fun initViewModels() {
+        // No need for manual initialization with Hilt
+    }

Add the necessary import:

import javax.inject.Inject

This simplifies your code and leverages Hilt's dependency injection capabilities.

data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/local/LocalVideoDataSourceImpl.kt (1)

22-26: Missing protection against exceptions thrown by getAllVideoGSONs.

ContentProviderUtil.getAllVideoGSONs might fail, throw an exception, or return an empty list. Consider wrapping this call in a try/catch block to gracefully handle unexpected errors.

 override suspend fun getVideos(): List<VideoGson> {
-    return ContentProviderUtil.getAllVideoGSONs(
-        context, BuildConfig.CONTENT_PROVIDER_APPLICATION_ID
-    )
+    return try {
+        ContentProviderUtil.getAllVideoGSONs(
+            context, BuildConfig.CONTENT_PROVIDER_APPLICATION_ID
+        )
+    } catch (e: Exception) {
+        Timber.e(e)
+        emptyList()
+    }
 }
data-video/src/main/java/ai/elimu/filamu/data/video/viewmodel/VideoViewModelImpl.kt (2)

30-42: Consider graceful error handling for getThumb.

If videoRepository.readVideoBytes fails (returns null), your UI receives null without context about the failure. Including error callbacks or logging at this level helps with debugging and user feedback.


44-51: Log or handle errors for readVideoBytes.

Similar to getThumb, if videoRepository.readVideoBytes returns null, it’s simply passed back to the UI. Consider adding a callback or logging approach to differentiate valid content from errors.

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📒 Files selected for processing (8)
  • app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt (1 hunks)
  • data-video/build.gradle (1 hunks)
  • data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/VideoRepository.kt (1 hunks)
  • data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/VideoRepositoryImpl.kt (1 hunks)
  • data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/local/LocalVideoDataSource.kt (1 hunks)
  • data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/local/LocalVideoDataSourceImpl.kt (1 hunks)
  • data-video/src/main/java/ai/elimu/filamu/data/video/viewmodel/VideoViewModel.kt (1 hunks)
  • data-video/src/main/java/ai/elimu/filamu/data/video/viewmodel/VideoViewModelImpl.kt (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
  • data-video/build.gradle
🔇 Additional comments (3)
data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/VideoRepositoryImpl.kt (1)

12-22: No local error handling in pass-through methods.

All methods simply delegate to the local data source. If the local data source fails to retrieve data or throws an exception, these repository methods won't handle or wrap the error. Confirm that the calling code or the local data source itself manages failures adequately.

data-video/src/main/java/ai/elimu/filamu/data/video/data/repository/local/LocalVideoDataSourceImpl.kt (1)

28-51: Consider distinguishing between non-existent files and I/O errors.

When an exception occurs, the code logs the error and returns null. Relying solely on null can make it hard to differentiate between a "file not found" scenario and other I/O issues. A more robust approach would be to throw a custom exception or provide an error code.

data-video/src/main/java/ai/elimu/filamu/data/video/viewmodel/VideoViewModelImpl.kt (1)

21-28: Handle repository errors or null returns in ViewModel.

This method launches a coroutine and calls videoRepository.getVideos(). If an exception occurs or null is returned, the onResult callback might never see an explicit error or fallback. Wrap the repository call in a try/catch or handle null returns to prevent silent failures.

Comment on lines 6 to 10
interface VideoViewModel {
fun getAllVideos(onResult: (List<VideoGson>) -> Unit)
fun getThumb(videoId: Long, onResult: (Bitmap?) -> Unit)
fun readVideoBytes(fileId: Long, onResult: (ByteArray?) -> Unit)
}
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🛠️ Refactor suggestion

Consider using modern coroutine patterns instead of callbacks

The interface currently uses callbacks for asynchronous operations, which is inconsistent with the repository layer that uses suspend functions. Consider refactoring to use LiveData, Flow, or suspend functions for a more consistent and modern approach to asynchronous operations.

 interface VideoViewModel {
-    fun getAllVideos(onResult: (List<VideoGson>) -> Unit)
-    fun getThumb(videoId: Long, onResult: (Bitmap?) -> Unit)
-    fun readVideoBytes(fileId: Long, onResult: (ByteArray?) -> Unit)
+    suspend fun getAllVideos(): List<VideoGson>
+    suspend fun getThumb(videoId: Long): Bitmap?
+    suspend fun readVideoBytes(fileId: Long): ByteArray?
+    
+    // Alternative with Flow
+    // fun getAllVideos(): Flow<List<VideoGson>>
+    // fun getThumb(videoId: Long): Flow<Bitmap?>
+    // fun readVideoBytes(fileId: Long): Flow<ByteArray?>
+    
+    // Alternative with LiveData
+    // fun getAllVideos(): LiveData<List<VideoGson>>
+    // fun getThumb(videoId: Long): LiveData<Bitmap?>
+    // fun readVideoBytes(fileId: Long): LiveData<ByteArray?>
 }

Using coroutines, Flow, or LiveData would:

  1. Provide better error handling capabilities
  2. Make testing easier
  3. Allow for more efficient resource management
  4. Create a more consistent API across your codebase
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
interface VideoViewModel {
fun getAllVideos(onResult: (List<VideoGson>) -> Unit)
fun getThumb(videoId: Long, onResult: (Bitmap?) -> Unit)
fun readVideoBytes(fileId: Long, onResult: (ByteArray?) -> Unit)
}
interface VideoViewModel {
suspend fun getAllVideos(): List<VideoGson>
suspend fun getThumb(videoId: Long): Bitmap?
suspend fun readVideoBytes(fileId: Long): ByteArray?
// Alternative with Flow
// fun getAllVideos(): Flow<List<VideoGson>>
// fun getThumb(videoId: Long): Flow<Bitmap?>
// fun readVideoBytes(fileId: Long): Flow<ByteArray?>
// Alternative with LiveData
// fun getAllVideos(): LiveData<List<VideoGson>>
// fun getThumb(videoId: Long): LiveData<Bitmap?>
// fun readVideoBytes(fileId: Long): LiveData<ByteArray?>
}

[versions]
elimuModel = "model-2.0.83"
elimuAnalytics = "3.1.27"
elimuContentProvider = "1.2.29-SNAPSHOT-04"
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Suggested change
elimuContentProvider = "1.2.29-SNAPSHOT-04"
elimuContentProvider = "1.2.30"

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@jo-elimu Updated.

@tuancoltech
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@coderabbitai Re-review please.

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coderabbitai bot commented Mar 11, 2025

@tuancoltech I'll perform a full review of your PR "Init codebase: First version of Filamu".

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Actionable comments posted: 0

🧹 Nitpick comments (2)
app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (1)

110-110: Good change, but there's a logging inconsistency

Making the View parameter nullable with View? is a good practice for handling potential null cases in click listeners. However, I noticed the method uses Log.i() on lines 111 and 113, but there's no import for the android.util.Log class. The rest of the file uses Timber for logging.

- import android.os.Bundle
+ import android.os.Bundle
+ import android.util.Log
  import android.view.View

Or better, be consistent with the rest of the file by using Timber:

- Log.i(TAG, "onClick")
- Log.i(TAG, "video.getId(): " + finalVideo.id)
+ Timber.tag(TAG).i("onClick")
+ Timber.tag(TAG).i("video.getId(): %d", finalVideo.id)
data-video/build.gradle (1)

20-31: Consider removing commented out code

There are commented out manifestPlaceholders lines that appear to be replaced by the buildConfigField declarations. Unless there's a plan to use them in the future, consider removing these comments to keep the build file clean.

    buildTypes {
        debug {
-//            manifestPlaceholders = [contentProviderApplicationId: "ai.elimu.content_provider.debug"]
            buildConfigField("String", "CONTENT_PROVIDER_APPLICATION_ID", '"ai.elimu.content_provider.debug"')
            buildConfigField("String", "ANALYTICS_APPLICATION_ID", '"ai.elimu.analytics.debug"')
        }
        release {
            minifyEnabled false
-//            manifestPlaceholders = [contentProviderApplicationId: "ai.elimu.content_provider"]
            buildConfigField("String", "CONTENT_PROVIDER_APPLICATION_ID", '"ai.elimu.content_provider"')
            buildConfigField("String", "ANALYTICS_APPLICATION_ID", '"ai.elimu.analytics"')
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
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📒 Files selected for processing (11)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (1 hunks)
  • data-video/build.gradle (1 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (1 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (5 hunks)
  • data-video/build.gradle (1 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (1 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (1 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (4 hunks)
  • data-video/build.gradle (1 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (2 hunks)
  • data-video/build.gradle (0 hunks)
🚧 Files skipped from review as they are similar to previous changes (5)
  • data-video/build.gradle
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt
  • data-video/build.gradle
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt
⏰ Context from checks skipped due to timeout of 90000ms (6)
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🔇 Additional comments (2)
data-video/build.gradle (2)

47-60: Good use of version catalog for dependency management

The build file appropriately uses a version catalog (using the libs. prefix) for dependency management, which is a good practice. This approach centralizes version control and makes it easier to update dependencies across the project.


9-10:

❓ Verification inconclusive

Verify the compileSdk version

The compileSdk is set to 35, which seems unusually high as Android 15 (API 35) hasn't been released yet. The latest stable Android version is Android 14 (API 34) as of March 2025.


🏁 Script executed:

#!/bin/bash
# Check the highest available SDK version in the Android SDK
sdkmanager --list | grep -o "platforms;android-[0-9]*" | sort -r | head -1

Length of output: 177


Action Required: Manually Verify the Android SDK Version

The compileSdk remains set to 35 in data-video/build.gradle (lines 9-10). We attempted to automatically verify the highest available SDK via sdkmanager, but the command was not found in the environment. This means we couldn’t confirm whether API 35 is available or intended. As of March 2025, Android 14 (API 34) is known to be the latest stable release.

  • Please manually verify that API 35 is intended—perhaps for preview features—and adjust if it was mistakenly set above the stable API version.

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Actionable comments posted: 1

🧹 Nitpick comments (7)
app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (3)

32-33: Consider using lateinit instead of nullable variables

Using nullable variables with GridLayout and ProgressBar requires null checks or non-null assertions (!!) throughout your code, which can lead to NullPointerExceptions.

-    private var videosGridLayout: GridLayout? = null
-    private var videosProgressBar: ProgressBar? = null
+    private lateinit var videosGridLayout: GridLayout
+    private lateinit var videosProgressBar: ProgressBar

38-38: Use a proper Timber tag constant

For consistency with the rest of your logging, use Timber for all logs and define TAG as a companion object constant.

-    var TAG: String = VideosActivity::class.java.name
+    companion object {
+        private val TAG = VideosActivity::class.java.simpleName
+    }

111-114: Use Timber consistently for logging

For consistency, use Timber instead of Log for all logging statements.

-                        Log.i(TAG, "onClick")
-
-                        Log.i(TAG, "video.getId(): " + finalVideo.id)
-                        Log.i(TAG, "video.getTitle(): " + finalVideo.title)
+                        Timber.tag(TAG).i("onClick")
+
+                        Timber.tag(TAG).i("video.getId(): %d", finalVideo.id)
+                        Timber.tag(TAG).i("video.getTitle(): %s", finalVideo.title)
app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt (4)

46-46: Replace hardcoded logger tags with class name

Using hardcoded tags like "tuancoltech" makes it difficult to filter logs or identify the source of logged messages. Use a consistent logging approach.

-        Log.i("tuancoltech", "videoId: $videoId")
+        Log.i(TAG, "videoId: $videoId")

Consider defining a TAG constant:

companion object {
    const val EXTRA_KEY_VIDEO_ID: String = "extra_key_video_id"
    private val TAG = VideoActivity::class.java.simpleName
}

82-84: Remove commented code

Commented-out code adds noise to the codebase and makes it harder to read and maintain. If this code is no longer needed, it should be removed.

-//                DefaultExtractorsFactory().setMp4ExtractorFlags(Mp4Extractor.FLAG_WORKAROUND_IGNORE_TFDT)
-//                val mediaSource = ProgressiveMediaSource.Factory(dataSourceFactory, DefaultExtractorsFactory())
-//                    .createMediaSource(/*mediaItem*/mediaItem)

97-97: Use string interpolation or string formatting for better logging

Using string concatenation for logging is less readable and can be less efficient. Consider using string formatting or Kotlin string interpolation.

-                        Log.e("tuancoltech", "onPlayerError: " + error.errorCode + "\nmessage: " + error.message + "\ncause: " + error.cause)
+                        Log.e(TAG, "onPlayerError: errorCode=${error.errorCode}\nmessage=${error.message}\ncause=${error.cause}")

106-110: Remove commented code

These commented lines should be removed if they're no longer needed.

-//                        for (i in 0..<events.size()) {
-//                            Log.d("tuancoltech", "Player event: " + events[i].toString())
-//                        }
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📒 Files selected for processing (12)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (1 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt (1 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (1 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (5 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt (3 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt (3 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (1 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (1 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (4 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (2 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (1 hunks)
  • app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt (2 hunks)
🚧 Files skipped from review as they are similar to previous changes (8)
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt
  • app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt
  • app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt
  • app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt
  • app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt
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  • GitHub Check: build (windows-latest, 17)
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🔇 Additional comments (8)
app/src/main/java/ai/elimu/filamu/ui/VideosActivity.kt (4)

57-60: Avoid using !! operators with nullable UI components

Using !! operators can lead to NullPointerExceptions if the views are null. Use safe calls (?.) or follow the above suggestion to use lateinit.

-        videosProgressBar!!.visibility = View.VISIBLE
-        videosGridLayout!!.visibility = View.GONE
-        videosGridLayout!!.removeAllViews()
+        videosProgressBar?.visibility = View.VISIBLE
+        videosGridLayout?.visibility = View.GONE
+        videosGridLayout?.removeAllViews()

69-74: Add loading state handling in the ViewModel

The initData method doesn't handle loading states or errors. Consider updating the implementation to observe LiveData or StateFlow for loading, success, and error states.

private fun initData() {
-    videoViewModel.getAllVideos { videos ->
-        Log.i(TAG, "videos.size(): " + videos.size)
-        showVideos(videos)
-    }
+    // Observe loading state
+    videoViewModel.loadingState.observe(this) { isLoading ->
+        videosProgressBar?.visibility = if (isLoading) View.VISIBLE else View.GONE
+    }
+    
+    // Observe videos data
+    videoViewModel.videos.observe(this) { videos ->
+        Timber.tag(TAG).i("videos.size(): %d", videos.size)
+        if (videos.isNotEmpty()) {
+            showVideos(videos)
+            videosGridLayout?.visibility = View.VISIBLE
+        } else {
+            // Handle empty state
+        }
+    }
+    
+    // Observe errors
+    videoViewModel.error.observe(this) { errorMessage ->
+        // Display error message to user
+    }
+    
+    // Trigger data loading
+    videoViewModel.loadVideos()
}

89-102: Improve nested coroutine management and error handling

The nested coroutines can lead to memory leaks and there's no error handling for the thumbnail extraction process.

-                CoroutineScope(Dispatchers.IO).launch {
-                    val videoBytes = readVideoBytes(finalVideo.id) ?: return@launch
-                    Timber.tag(TAG).d("Extracting thumb for video id: " + finalVideo.id)
-                    thumb = [email protected](videoBytes)
-                    Timber.tag(TAG)
-                        .d("thumb.w: " + thumb?.width + ". h: " + thumb?.height + ". videoID: " + finalVideo.id)
-                    withContext(Dispatchers.Main) {
-                        val coverImageView =
-                            videoView.coverImageView
-                        thumb?.let {
-                            Glide.with(this@VideosActivity).load(thumb).into(coverImageView)
-                        }
-                    }
+                try {
+                    val videoBytes = readVideoBytes(finalVideo.id) ?: return@launch
+                    Timber.tag(TAG).d("Extracting thumb for video id: %d", finalVideo.id)
+                    thumb = extractFirstFrameFromVideo(videoBytes)
+                    Timber.tag(TAG).d("thumb.w: %d, h: %d, videoID: %d", 
+                        thumb?.width, thumb?.height, finalVideo.id)
+                    withContext(Dispatchers.Main) {
+                        thumb?.let {
+                            Glide.with(this@VideosActivity)
+                                .load(it)
+                                .into(videoView.coverImageView)
+                        }
+                    }
+                } catch (e: Exception) {
+                    Timber.tag(TAG).e(e, "Failed to process video id: %d", finalVideo.id)
                 }

125-131: Use withContext(Dispatchers.Main) instead of runOnUiThread

Using runOnUiThread inside a coroutine is redundant when you can use withContext(Dispatchers.Main). This would help avoid race conditions in UI updates.

-                runOnUiThread {
-                    videosGridLayout!!.addView(videoView.root)
-                    if (videosGridLayout!!.childCount == videos.size) {
-                        videosProgressBar!!.visibility = View.GONE
-                        videosGridLayout!!.visibility = View.VISIBLE
-                    }
-                }
+                withContext(Dispatchers.Main) {
+                    videosGridLayout.addView(videoView.root)
+                    if (videosGridLayout.childCount == videos.size) {
+                        videosProgressBar.visibility = View.GONE
+                        videosGridLayout.visibility = View.VISIBLE
+                    }
+                }
app/src/main/java/ai/elimu/filamu/ui/video/VideoActivity.kt (4)

66-66: Improve coroutine lifecycle management

The current implementation creates a new coroutine scope directly, which doesn't respect the activity lifecycle and may lead to memory leaks if the activity is destroyed before the coroutine completes.

-CoroutineScope(Dispatchers.IO).launch {
+lifecycleScope.launch(Dispatchers.IO) {

Make sure to add the appropriate import:

import androidx.lifecycle.lifecycleScope

68-80: Detected codec is not used for media playback

The code detects the video codec at line 68, but then doesn't use this information. Instead, it hardcodes "video/avc" for decoder info and MimeTypes.VIDEO_H264 for the MediaItem, which could cause playback issues if the actual video uses a different codec.

    val videoCodec = detectVideoCodec(this@VideoActivity, videoBytes)

-   val codecInfo = MediaCodecUtil.getDecoderInfo("video/avc", false, false)
+   val codecInfo = videoCodec?.let { MediaCodecUtil.getDecoderInfo(it, false, false) }
    Log.d("tuancoltech", "Decoder: ${codecInfo?.name ?: "Not Found"}")

    Log.d("tuancoltech", "videoBytes.length: " + videoBytes.size + ". codec: " + videoCodec)
    withContext(Dispatchers.Main) {
        // Create MediaSource from ByteArray
        val dataSourceFactory = ByteArrayDataSourceFactory(videoBytes)
        val mediaItem = MediaItem.Builder().setUri(/*"dummy://video.mp4"*/Uri.EMPTY)
-           .setMimeType(MimeTypes.VIDEO_H264/*"video/x-m4v"*/)
+           .setMimeType(videoCodec ?: MimeTypes.VIDEO_H264) // Use detected codec with fallback
            .build()

121-127: Add missing lifecycle methods for proper player management

The activity doesn't implement onPause and onResume methods to properly manage the player lifecycle. This can lead to unnecessary battery drain and resource usage.

+    override fun onPause() {
+        super.onPause()
+        if (this::videoPlayer.isInitialized) {
+            videoPlayer.pause()
+        }
+    }
+
+    override fun onResume() {
+        super.onResume()
+        if (this::videoPlayer.isInitialized && !videoPlayer.isPlaying) {
+            videoPlayer.play()
+        }
+    }

     override fun onDestroy() {
         super.onDestroy()
-        videoPlayer.release()
+        if (this::videoPlayer.isInitialized) {
+            videoPlayer.release()
+        }
     }

128-154: Temporary file leak in detectVideoCodec method

The code creates a temporary file but never deletes it after use, which can lead to storage space being unnecessarily consumed over time.

    } finally {
        extractor.release()
+       // Delete the temporary file
+       if (tempFile.exists()) {
+           tempFile.delete()
+       }
    }

Comment on lines +76 to +77
}
}
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🛠️ Refactor suggestion

Improve coroutine management

The current implementation uses a raw CoroutineScope, which doesn't respect the activity lifecycle. This can lead to memory leaks if the activity is destroyed before the coroutine completes.

-    private fun showVideos(videos: List<VideoGson>) {
-        CoroutineScope(Dispatchers.IO).launch {
+    private fun showVideos(videos: List<VideoGson>) {
+        lifecycleScope.launch(Dispatchers.IO) {

Make sure to add the appropriate import:

import androidx.lifecycle.lifecycleScope

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🧹 Nitpick comments (3)
app/src/main/AndroidManifest.xml (3)

5-7: Content Provider Permission Commented Out
A commented-out <uses-permission> for the Content Provider indicates that there is anticipated integration. To avoid confusion in the future, decide whether this integration is required. If so, uncomment and update it to align with the Content Provider module; otherwise, remove the commented lines.


8-10: Active External Storage Permission with TODO
The active <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> is paired with a TODO note indicating that this permission should be removed once image files can be provided directly by the Content Provider app. Ensure this plan is clearly documented and tracked so that the removal is not forgotten.


15-24: Application Element Configuration
The <application> element is properly configured with key attributes such as android:name, backup support, icons, labels, and theme references. One point to consider: the attribute android:requestLegacyExternalStorage="true" is being used. This may be necessary for backward compatibility now, but plan for migration to scoped storage as Android 11+ requirements evolve.

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app/src/main/AndroidManifest.xml (5)

1-4: XML Declaration and Manifest Setup
The XML declaration and opening <manifest> element are correctly specified with proper encoding and namespace attributes. The manifest's package attribute is also set correctly.


11-13: Commented Queries Block
The <queries> block is commented out, similar to previous instances in the repository. Per past review feedback, if Content Provider integration is intended, uncomment and configure this block consistently across modules; if not required, remove it to reduce clutter.


25-35: MainActivity Declaration
The MainActivity is correctly declared with the appropriate intent filter for the launcher role and is explicitly marked as exported. This ensures it will be properly recognized as the front door of the app.


37-41: VideosActivity Declaration
The VideosActivity is declared with a specific theme and is set as non-exported, which is appropriate if it is meant solely for internal navigation within the app.


42-46: VideoActivity Declaration
The VideoActivity follows the same pattern as VideosActivity with the non-exported attribute and dedicated theme setup. This configuration appears to be intentional and correct.

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🧹 Nitpick comments (1)
app/src/main/res/values-v27/styles.xml (1)

5-7: Namespace Consistency Check for Attributes
While the attributes android:windowFullscreen and android:windowLayoutInDisplayCutoutMode are correctly namespaced, the windowNoTitle attribute is not. Verify if windowNoTitle should also be namespaced (e.g., as android:windowNoTitle) to ensure consistency and avoid potential issues with attribute resolution.

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app/src/main/res/values-v27/styles.xml (3)

1-3: XML Declaration & Resources Tag Verification
The XML declaration and the opening <resources> tag are correctly defined and conform to standard XML formatting.


4-8: Definition of Fullscreen Theme Style
The new style AppTheme.NoTitle.Fullscreen is clearly defined and inherits from AppTheme. The items provided for fullscreen behavior—disabling the title, enabling fullscreen mode, and configuring display cutout mode to shortEdges—are well-specified.


9-9: Closing Resources Tag
The closing </resources> tag is correctly placed and the overall XML structure is valid.

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@tuancoltech This file can be deleted since this app does not require an Internet connection.

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@jo-elimu Oh I just forgot it.
The reason why this was added is that: We're loading directly from remote url of the thumbs.
But yeah you reminded me that the app should work without internet connection.
For this reason, we'll have to store the thumb locally on device, for later usage instead.

I'll still merge this PR for now and change the way thumbs are loaded later because we'll have to modify content-provider anyway.

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🧹 Nitpick comments (1)
app/src/main/res/values/strings.xml (1)

1-3: Include XML Declaration for Standard Practice

It is recommended to add an XML declaration (e.g., <?xml version="1.0" encoding="utf-8"?>) at the top of the file. This improves clarity and aligns with standard Android resource file practices.

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app/src/main/res/values/strings.xml (1)

2-2: Verify App Name Consistency

The default app name is set to "Movies", which matches the earlier suggestion from jo-elimu. However, verify that this is the intended branding for the default (English) locale, especially since other localized strings (e.g., in values-bn, values-fil, values-hi, values-sw) use "Filamu" or different values.

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🧹 Nitpick comments (1)
gradle/libs.versions.toml (1)

48-49: Empty [plugins] Section Notice.
The [plugins] section is defined but currently empty. Consider adding a brief comment or placeholder entry to indicate its intended future use, which may help future maintainers understand its purpose.

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gradle/libs.versions.toml (3)

1-21: Centralized Version Management is Well Structured.
The [versions] section clearly defines a single source of truth for dependency versions using a consistent naming convention. This facilitates easier updates and reduces the risk of version inconsistencies.


22-47: Library Definitions Are Clear and Consistent.
The [libraries] section accurately maps each library to its corresponding version reference from the [versions] section. This clean separation makes the dependency management both maintainable and scalable.


17-18: Hilt Version Consistency Verified.
The Hilt dependency is consistently declared as "2.54" in the [versions] section and properly referenced in the [libraries] section (for hilt-android, hilt-compiler, and hilt-gradle-plugin). This addresses the earlier noted version mismatch issue.

Also applies to: 35-37

@tuancoltech tuancoltech merged commit a4012c6 into main Mar 12, 2025
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@tuancoltech tuancoltech deleted the feat/implement_video_views branch March 12, 2025 02:44
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Collect LearningEvent data when a student interacts with a video Load videos from Content Provider
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