Find user feed posts

getUserFeed.js

const yesterday = Date.now() - 1000*60*60*24;


const getUserFeed = (userId, params) => User.findById(userId)
	.populate(USER_ENTRY_SUBSCRIPTIONS)
	.then(user => 
		Post.find({
			[POST_ENTRY_CREATED]: { $gt: yesterday },
			[`${POST_ENTRY_AUTHOR}.${ENTITY_ENTRY_ITEM}`]: { $in: [
				...user[USER_ENTRY_SUBSCRIPTIONS][USER_SUBSCRIPTIONS_ENTRY_USERS], 
				...user[USER_ENTRY_SUBSCRIPTIONS][USER_SUBSCRIPTIONS_ENTRY_BLOGS]
			] }
		}, { 
			...params,
			sort: { [POST_ENTRY_LIKES]: -1 }, 
		})
		.then((posts) => {
			if (posts.length > 0) {
				return posts;
			}
			return Post.find({ 
				[`${POST_ENTRY_AUTHOR}.${ENTITY_ENTRY_ITEM}`]: { $in: [
					...user[USER_ENTRY_SUBSCRIPTIONS][USER_SUBSCRIPTIONS_ENTRY_USERS], 
					...user[USER_ENTRY_SUBSCRIPTIONS][USER_SUBSCRIPTIONS_ENTRY_BLOGS]
				]
			}, { 
				...params,
				sort: { [POST_ENTRY_CREATED]: -1 }, 
			})
		})
	})
	.catch(error => Promise.reject(error))