Initial commit 🍀

src/api/endpoints/posts/likes/delete.js

@@ -0,0 +1,80 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import * as mongo from 'mongodb';
+import Like from '../../../models/like';
+import Post from '../../../models/post';
+import User from '../../../models/user';
+// import event from '../../../event';
+
+/**
+ * Unlike a post
+ *
+ * @param {Object} params
+ * @param {Object} user
+ * @return {Promise<object>}
+ */
+module.exports = (params, user) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'post_id' parameter
+	let postId = params.post_id;
+	if (postId === undefined || postId === null) {
+		return rej('post_id is required');
+	}
+
+	// Get likee
+	const post = await Post.findOne({
+		_id: new mongo.ObjectID(postId)
+	});
+
+	if (post === null) {
+		return rej('post not found');
+	}
+
+	// Check arleady liked
+	const exist = await Like.findOne({
+		post_id: post._id,
+		user_id: user._id,
+		deleted_at: { $exists: false }
+	});
+
+	if (exist === null) {
+		return rej('already not liked');
+	}
+
+	// Delete like
+	await Like.updateOne({
+		_id: exist._id
+	}, {
+		$set: {
+			deleted_at: new Date()
+		}
+	});
+
+	// Send response
+	res();
+
+	// Decrement likes count
+	Post.updateOne({ _id: post._id }, {
+		$inc: {
+			likes_count: -1
+		}
+	});
+
+	// Decrement user likes count
+	User.updateOne({ _id: user._id }, {
+		$inc: {
+			likes_count: -1
+		}
+	});
+
+	// Decrement user liked count
+	User.updateOne({ _id: post.user_id }, {
+		$inc: {
+			liked_count: -1
+		}
+	});
+});