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'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');
}
// Validate id
if (!mongo.ObjectID.isValid(postId)) {
return rej('incorrect post_id');
}
// 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.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
}
});
});
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