wip

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

@@ -0,0 +1,77 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import it from '../../../it';
+import Like from '../../../models/like';
+import Post from '../../../models/post';
+import User from '../../../models/user';
+// import event from '../../../event';
+
+/**
+ * Unlike a post
+ *
+ * @param {any} params
+ * @param {any} user
+ * @return {Promise<any>}
+ */
+module.exports = (params, user) =>
+	new Promise(async (res, rej) => {
+		// Get 'post_id' parameter
+		const [postId, postIdErr] = it(params.post_id, 'id', true);
+		if (postIdErr) return rej('invalid post_id param');
+
+		// Get likee
+		const post = await Post.findOne({
+			_id: postId
+		});
+
+		if (post === null) {
+			return rej('post not found');
+		}
+
+		// if already 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.update({
+			_id: exist._id
+		}, {
+				$set: {
+					deleted_at: new Date()
+				}
+			});
+
+		// Send response
+		res();
+
+		// Decrement likes count
+		Post.update({ _id: post._id }, {
+			$inc: {
+				likes_count: -1
+			}
+		});
+
+		// Decrement user likes count
+		User.update({ _id: user._id }, {
+			$inc: {
+				likes_count: -1
+			}
+		});
+
+		// Decrement user liked count
+		User.update({ _id: post.user_id }, {
+			$inc: {
+				liked_count: -1
+			}
+		});
+	});