92 lines
1.6 KiB
JavaScript
92 lines
1.6 KiB
JavaScript
'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 notify from '../../../common/notify';
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/**
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* Like a post
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*
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* @param {any} params
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* @param {any} user
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* @return {Promise<any>}
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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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// 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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// Validate id
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if (!mongo.ObjectID.isValid(postId)) {
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return rej('incorrect post_id');
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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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// Myself
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if (post.user_id.equals(user._id)) {
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return rej('-need-translate-');
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}
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// if already 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: { $exists: false }
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});
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if (exist !== null) {
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return rej('already liked');
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}
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// Create like
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await Like.insert({
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created_at: new Date(),
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post_id: post._id,
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user_id: user._id
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});
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// Send response
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res();
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// Increment likes count
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Post.update({ _id: post._id }, {
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$inc: {
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likes_count: 1
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}
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});
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// Increment user likes count
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User.update({ _id: user._id }, {
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$inc: {
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likes_count: 1
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}
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});
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// Increment user liked count
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User.update({ _id: post.user_id }, {
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$inc: {
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liked_count: 1
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}
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});
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// Notify
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notify(post.user_id, user._id, 'like', {
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post_id: post._id
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});
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});
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