yumechi-no-kuni/src/api/endpoints/posts.js
2017-03-01 17:37:01 +09:00

87 lines
1.7 KiB
JavaScript

'use strict';
/**
* Module dependencies
*/
import Post from '../models/post';
import serialize from '../serializers/post';
/**
* Lists all posts
*
* @param {any} params
* @return {Promise<any>}
*/
module.exports = (params) =>
new Promise(async (res, rej) => {
// Get 'include_replies' parameter
let includeReplies = params.include_replies;
if (includeReplies === true) {
includeReplies = true;
} else {
includeReplies = false;
}
// Get 'include_reposts' parameter
let includeReposts = params.include_reposts;
if (includeReposts === true) {
includeReposts = true;
} else {
includeReposts = false;
}
// Get 'limit' parameter
let limit = params.limit;
if (limit !== undefined && limit !== null) {
limit = parseInt(limit, 10);
// From 1 to 100
if (!(1 <= limit && limit <= 100)) {
return rej('invalid limit range');
}
} else {
limit = 10;
}
const since = params.since_id || null;
const max = params.max_id || null;
// Check if both of since_id and max_id is specified
if (since !== null && max !== null) {
return rej('cannot set since_id and max_id');
}
// Construct query
const sort = {
_id: -1
};
const query = {};
if (since !== null) {
sort._id = 1;
query._id = {
$gt: new mongo.ObjectID(since)
};
} else if (max !== null) {
query._id = {
$lt: new mongo.ObjectID(max)
};
}
if (!includeReplies) {
query.reply_to_id = null;
}
if (!includeReposts) {
query.repost_id = null;
}
// Issue query
const posts = await Post
.find(query, {
limit: limit,
sort: sort
});
// Serialize
res(await Promise.all(posts.map(async post => await serialize(post))));
});