rudeshark.net/src/api/endpoints/posts/reposts.ts
syuilo 31f36fa618 ✌️
2017-03-09 03:50:09 +09:00

75 lines
1.6 KiB
TypeScript

/**
* Module dependencies
*/
import $ from 'cafy';
import Post from '../../models/post';
import serialize from '../../serializers/post';
/**
* Show a reposts of a post
*
* @param {any} params
* @param {any} user
* @return {Promise<any>}
*/
module.exports = (params, user) => new Promise(async (res, rej) => {
// Get 'post_id' parameter
const [postId, postIdErr] = $(params.post_id).id().$;
if (postIdErr) return rej('invalid post_id param');
// Get 'limit' parameter
const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
if (limitErr) return rej('invalid limit param');
// Get 'since_id' parameter
const [sinceId, sinceIdErr] = $(params.since_id).optional.id().$;
if (sinceIdErr) return rej('invalid since_id param');
// Get 'max_id' parameter
const [maxId, maxIdErr] = $(params.max_id).optional.id().$;
if (maxIdErr) return rej('invalid max_id param');
// Check if both of since_id and max_id is specified
if (sinceId && maxId) {
return rej('cannot set since_id and max_id');
}
// Lookup post
const post = await Post.findOne({
_id: postId
});
if (post === null) {
return rej('post not found');
}
// Construct query
const sort = {
_id: -1
};
const query = {
repost_id: post._id
} as any;
if (sinceId) {
sort._id = 1;
query._id = {
$gt: sinceId
};
} else if (maxId) {
query._id = {
$lt: maxId
};
}
// Issue query
const reposts = await Post
.find(query, {
limit: limit,
sort: sort
});
// Serialize
res(await Promise.all(reposts.map(async post =>
await serialize(post, user))));
});