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misskey/src/server/api/endpoints/aggregation/posts.ts

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/**
* Module dependencies
*/
import $ from 'cafy';
import Post from '../../models/post';
/**
* Aggregate posts
*
* @param {any} params
* @return {Promise<any>}
*/
module.exports = params => new Promise(async (res, rej) => {
// Get 'limit' parameter
const [limit = 365, limitErr] = $(params.limit).optional.number().range(1, 365).$;
if (limitErr) return rej('invalid limit param');
const datas = await Post
.aggregate([
{ $project: {
repost_id: '$repost_id',
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reply_id: '$reply_id',
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created_at: { $add: ['$created_at', 9 * 60 * 60 * 1000] } // Convert into JST
}},
{ $project: {
date: {
year: { $year: '$created_at' },
month: { $month: '$created_at' },
day: { $dayOfMonth: '$created_at' }
},
type: {
$cond: {
if: { $ne: ['$repost_id', null] },
then: 'repost',
else: {
$cond: {
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if: { $ne: ['$reply_id', null] },
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then: 'reply',
else: 'post'
}
}
}
}}
},
{ $group: { _id: {
date: '$date',
type: '$type'
}, count: { $sum: 1 } } },
{ $group: {
_id: '$_id.date',
data: { $addToSet: {
type: '$_id.type',
count: '$count'
}}
} }
]);
datas.forEach(data => {
data.date = data._id;
delete data._id;
data.posts = (data.data.filter(x => x.type == 'post')[0] || { count: 0 }).count;
data.reposts = (data.data.filter(x => x.type == 'repost')[0] || { count: 0 }).count;
data.replies = (data.data.filter(x => x.type == 'reply')[0] || { count: 0 }).count;
delete data.data;
});
const graph = [];
for (let i = 0; i < limit; i++) {
const day = new Date(new Date().setDate(new Date().getDate() - i));
const data = datas.filter(d =>
d.date.year == day.getFullYear() && d.date.month == day.getMonth() + 1 && d.date.day == day.getDate()
)[0];
if (data) {
graph.push(data);
} else {
graph.push({
posts: 0,
reposts: 0,
replies: 0
});
}
}
res(graph);
});