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

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/**
* Module dependencies
*/
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import it from 'cafy';
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import Post from '../../models/post';
import Like from '../../models/like';
import serialize from '../../serializers/user';
/**
* Show a likes of a post
*
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* @param {any} params
* @param {any} user
* @return {Promise<any>}
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*/
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module.exports = (params, user) => new Promise(async (res, rej) => {
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// Get 'post_id' parameter
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const [postId, postIdErr] = it(params.post_id, 'id', true);
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if (postIdErr) return rej('invalid post_id param');
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// Get 'limit' parameter
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const [limit = 10, limitErr] = it(params.limit).expect.number().range(1, 100).get();
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if (limitErr) return rej('invalid limit param');
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// Get 'offset' parameter
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const [offset = 0, offsetErr] = it(params.offset).expect.number().min(0).get();
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if (offsetErr) return rej('invalid offset param');
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// Get 'sort' parameter
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const [sort = 'desc', sortError] = it(params.sort).expect.string().or('desc asc').get();
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if (sortError) return rej('invalid sort param');
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// Lookup post
const post = await Post.findOne({
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_id: postId
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});
if (post === null) {
return rej('post not found');
}
// Issue query
const likes = await Like
.find({
post_id: post._id,
deleted_at: { $exists: false }
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}, {
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limit: limit,
skip: offset,
sort: {
_id: sort == 'asc' ? 1 : -1
}
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});
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// Serialize
res(await Promise.all(likes.map(async like =>
await serialize(like.user_id, user))));
});