refactor: Migrated from MMKV to DataStore for preferences

This commit replaces MMKV with DataStore for managing application preferences.
This change improves the overall structure and maintainability of the preferences system by utilizing a more modern and robust solution offered by Jetpack DataStore.

The `AppPreferences` class now handles preference management with DataStore, and a `PreferenceDelegate` was introduced for type-safe preference delegation.

Additionally, the `CoreSettings` class, previously used with MMKV, has been removed and its logic integrated into the `AppPreferences` structure.

app/build.gradle.kts

@@ -193,7 +193,7 @@ dependencies {
     annotationProcessor(libs.room.compiler)
 
 //-------------------Key-value Storage-------------------//
-    implementation(libs.mmkv)
+    implementation(libs.datastore.preferences)
 
 //-------------------Image Loading-------------------//
     implementation(libs.landscapist.coil)

app/src/main/java/com/bobbyesp/metadator/App.kt

@@ -9,16 +9,11 @@ import com.bobbyesp.crashhandler.ReportInfo
 import com.bobbyesp.metadator.di.appCoroutinesScope
 import com.bobbyesp.metadator.di.appMainViewModels
 import com.bobbyesp.metadator.di.appSystemManagers
+import com.bobbyesp.metadator.di.coreFunctionalitiesModule
 import com.bobbyesp.metadator.di.mediaplayerViewModels
 import com.bobbyesp.metadator.di.utilitiesViewModels
 import com.bobbyesp.metadator.features.spotify.di.spotifyMainModule
 import com.bobbyesp.metadator.features.spotify.di.spotifyServicesModule
-import com.bobbyesp.metadator.util.preferences.PreferencesKeys
-import com.bobbyesp.metadator.util.preferences.PreferencesKeys.BooleanPreferenceDefaults
-import com.bobbyesp.metadator.util.preferences.PreferencesKeys.IntPreferenceDefaults
-import com.bobbyesp.metadator.util.preferences.PreferencesKeys.StringPreferenceDefaults
-import com.bobbyesp.utilities.Preferences
-import com.tencent.mmkv.MMKV
 import mediaplayerInternalsModule
 import org.koin.android.ext.koin.androidContext
 import org.koin.android.ext.koin.androidLogger
@@ -27,17 +22,10 @@ import kotlin.properties.Delegates
 
 class App : Application() {
     override fun onCreate() {
-        MMKV.initialize(this)
-        preferences = Preferences(
-            PreferencesKeys.MMKV_PREFERENCES_NAME,
-            IntPreferenceDefaults,
-            StringPreferenceDefaults,
-            BooleanPreferenceDefaults
-        )
         startKoin {
             androidLogger()
             androidContext(this@App)
-            modules(appSystemManagers, appCoroutinesScope)
+            modules(appSystemManagers, appCoroutinesScope, coreFunctionalitiesModule)
             modules(mediaplayerInternalsModule)
             modules(appMainViewModels, utilitiesViewModels, mediaplayerViewModels)
             modules(spotifyMainModule, spotifyServicesModule)
@@ -61,7 +49,6 @@ class App : Application() {
     }
 
     companion object {
-        lateinit var preferences: Preferences
         lateinit var packageInfo: PackageInfo
         var isPlayStoreBuild by Delegates.notNull<Boolean>()
 

app/src/main/java/com/bobbyesp/metadator/MainActivity.kt

@@ -13,7 +13,7 @@ import com.bobbyesp.mediaplayer.service.MediaplayerService
 import com.bobbyesp.metadator.presentation.Navigator
 import com.bobbyesp.metadator.presentation.common.AppLocalSettingsProvider
 import com.bobbyesp.metadator.presentation.theme.MetadatorTheme
-import com.bobbyesp.metadator.util.preferences.CoreSettings
+import com.bobbyesp.metadator.util.preferences.AppPreferences
 import org.koin.android.ext.android.inject
 import org.koin.compose.KoinContext
 import org.koin.core.component.KoinComponent
@@ -24,6 +24,7 @@ class MainActivity : ComponentActivity(), KoinComponent {
     private var isMusicPlayerServiceStarted = false
 
     private val connectionHandler: ConnectionHandler by inject()
+    private val appPreferences: AppPreferences by inject()
 
     @OptIn(ExperimentalMaterial3WindowSizeClassApi::class)
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -37,7 +38,7 @@ class MainActivity : ComponentActivity(), KoinComponent {
                 AppLocalSettingsProvider(
                     windowWidthSize = windowSizeClass.widthSizeClass,
                     playerConnectionHandler = connectionHandler,
-                    coreSettings = CoreSettings.initialize(App.preferences.kv)
+                    appPreferences = appPreferences
                 ) {
                     MetadatorTheme {
                         Navigator()

app/src/main/java/com/bobbyesp/metadator/di/AppCoreFunctionalitiesModule.kt

@@ -0,0 +1,27 @@
+package com.bobbyesp.metadator.di
+
+import androidx.datastore.core.DataStore
+import androidx.datastore.preferences.core.Preferences
+import com.bobbyesp.metadator.util.preferences.AppPreferences
+import com.bobbyesp.metadator.util.preferences.datastore.dataStore
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.SupervisorJob
+import org.koin.android.ext.koin.androidContext
+import org.koin.core.qualifier.named
+import org.koin.dsl.module
+
+val appCoroutinesScope = module {
+    single<CoroutineScope>(
+        qualifier = named("AppMainSupervisedScope")
+    ) { CoroutineScope(SupervisorJob()) }
+}
+
+val coreFunctionalitiesModule = module {
+    single<DataStore<Preferences>> { androidContext().dataStore }
+    single<AppPreferences> {
+        AppPreferences(
+            dataStore = androidContext().dataStore,
+            scope = get(qualifier = named("AppMainSupervisedScope"))
+        )
+    }
+}

app/src/main/java/com/bobbyesp/metadator/di/AppSystemManagersModule.kt

@@ -8,13 +8,10 @@ import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.SupervisorJob
 import org.koin.android.ext.koin.androidApplication
 import org.koin.android.ext.koin.androidContext
+import org.koin.core.qualifier.named
 import org.koin.dsl.module
 
 val appSystemManagers = module {
     single<ClipboardManager> { androidApplication().getSystemService(CLIPBOARD_SERVICE) as ClipboardManager }
     single<ConnectivityManager> { androidContext().getSystemService(CONNECTIVITY_SERVICE) as ConnectivityManager }
-}
-
-val appCoroutinesScope = module {
-    single { CoroutineScope(SupervisorJob()) }
 }

app/src/main/java/com/bobbyesp/metadator/presentation/pages/home/LayoutType.kt → app/src/main/java/com/bobbyesp/metadator/domain/enums/LayoutType.kt

@@ -1,4 +1,4 @@
-package com.bobbyesp.metadator.presentation.pages.home
+package com.bobbyesp.metadator.domain.enums
 
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.automirrored.rounded.List

app/src/main/java/com/bobbyesp/metadator/ext/String.kt

@@ -13,6 +13,7 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.graphics.vector.ImageVector
 import androidx.compose.ui.res.stringResource
 import com.bobbyesp.metadator.R
+import com.bobbyesp.metadator.util.executeIfDebugging
 
 object TagLib {
     @Composable
@@ -56,4 +57,19 @@ object TagLib {
             else -> Icons.Rounded.RunningWithErrors
         }
     }
-}
+}
+
+object StringPreferencesExtensions {
+
+    inline fun <reified T : Enum<T>> String?.toEnum(defaultValue: T): T =
+        if (this == null) defaultValue
+        else try {
+            enumValueOf(this)
+        } catch (e: IllegalArgumentException) {
+            executeIfDebugging {
+                e.printStackTrace()
+            }
+            defaultValue
+        }
+
+}