TODOs API

.firebaserc

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+{
+  "projects": {
+    "default": "todoapp-655c1"
+  }
+}

.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+firebase-debug.log*
+
+# Firebase cache
+.firebase/
+
+# Firebase config
+
+# Uncomment this if you'd like others to create their own Firebase project.
+# For a team working on the same Firebase project(s), it is recommended to leave
+# it commented so all members can deploy to the same project(s) in .firebaserc.
+# .firebaserc
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env

firebase.json

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+{}

functions/.gitignore

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+node_modules/

functions/APIs/todos.js

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+const { db } = require('../util/admin');
+
+exports.getAllTodos = (request, response) => {
+	db
+		.collection('todos')
+		.orderBy('createdAt', 'desc')
+		.get()
+		.then((data) => {
+			let todos = [];
+			data.forEach((doc) => {
+				todos.push({
+                    todoId: doc.id,
+                    title: doc.data().title,
+					body: doc.data().body,
+					createdAt: doc.data().createdAt,
+				});
+			});
+			return response.json(todos);
+		})
+		.catch((err) => {
+			console.error(err);
+			return response.status(500).json({ error: err.code});
+		});
+};
+
+exports.getOneTodo = (request, response) => {
+	db
+		.doc(`/todos/${request.params.todoId}`)
+		.get()
+		.then((doc) => {
+			if (!doc.exists) {
+				return response.status(404).json(
+                    { 
+                        error: 'Todo not found' 
+                    });
+			}
+			TodoData = doc.data();
+			TodoData.todoId = doc.id;
+			return response.json(TodoData);
+		})
+		.catch((err) => {
+			console.error(err);
+			return response.status(500).json({ error: error.code });
+		});
+};
+
+exports.postOneTodo = (request, response) => {
+	if (request.body.body.trim() === '') {
+		return response.status(400).json({ body: 'Must not be empty' });
+    }
+
+    if(request.body.title.trim() === '') {
+        return response.status(400).json({ title: 'Must not be empty' });
+    }
+
+    const newTodoItem = {
+        title: request.body.title,
+        body: request.body.body,
+        createdAt: new Date().toISOString()
+    }
+    db
+        .collection('todos')
+        .add(newTodoItem)
+        .then((doc)=>{
+            const responseTodoItem = newTodoItem;
+            responseTodoItem.id = doc.id;
+            return response.json(responseTodoItem);
+        })
+        .catch((err) => {
+			response.status(500).json({ error: 'Something went wrong' });
+			console.error(err);
+		});
+};
+
+exports.deleteTodo = (request, response) => {
+    const document = db.doc(`/todos/${request.params.todoId}`);
+    document
+        .get()
+        .then((doc) => {
+            if (!doc.exists) {
+                return response.status(404).json({ 
+                    error: 'Todo not found' 
+            })}
+            return document.delete();
+        })
+        .then(() => {
+            response.json({ message: 'Delete successfull' });
+        })
+        .catch((err) => {
+            console.error(err);
+            return response.status(500).json({ 
+                error: err.code 
+            });
+        });
+};
+
+exports.editTodo = ( request, response ) => { 
+    if(request.body.todoId || request.body.createdAt){
+        response.status(403).json({message: 'Not allowed to edit'});
+    }
+    let document = db.collection('todos').doc(`${request.params.todoId}`);
+    document.update(request.body)
+    .then(()=> {
+        response.json({message: 'Updated successfully'});
+    })
+    .catch((err) => {
+        console.error(err);
+        return response.status(500).json({ 
+                error: err.code 
+        });
+    });
+};

functions/index.js

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+const functions = require('firebase-functions');
+const app = require('express')();
+
+const {
+    getAllTodos,
+    getOneTodo,
+    postOneTodo,
+    deleteTodo,
+    editTodo
+} = require('./APIs/todos')
+
+app.get('/todos', getAllTodos);
+app.get('/todo/:todoId', getOneTodo);
+app.post('/todo', postOneTodo);
+app.delete('/todo/:todoId', deleteTodo);
+app.put('/todo/:todoId', editTodo);
+
+exports.api = functions.https.onRequest(app);