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