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/**
* Module dependencies
*/
import $ from 'cafy';
import User from '../../../models/user';
import Following from '../../../models/following';
/**
* Aggregate following of a user
*
* @param {any} params
* @return {Promise<any>}
*/
module.exports = (params) => new Promise(async (res, rej) => {
// Get 'user_id' parameter
const [userId, userIdErr] = $(params.user_id).id().$;
if (userIdErr) return rej('invalid user_id param');
// Lookup user
const user = await User.findOne({
_id: userId
}, {
fields: {
_id: true
}
});
if (user === null) {
return rej('user not found');
}
const startTime = new Date(new Date().setMonth(new Date().getMonth() - 1));
const following = await Following
.find({
follower_id: user._id,
$or: [
{ deleted_at: { $exists: false } },
{ deleted_at: { $gt: startTime } }
]
}, {
_id: false,
follower_id: false,
followee_id: false
}, {
sort: { created_at: -1 }
});
const graph = [];
for (let i = 0; i < 30; i++) {
let day = new Date(new Date().setDate(new Date().getDate() - i));
day = new Date(day.setMilliseconds(999));
day = new Date(day.setSeconds(59));
day = new Date(day.setMinutes(59));
day = new Date(day.setHours(23));
const count = following.filter(f =>
f.created_at < day && (f.deleted_at == null || f.deleted_at > day)
).length;
graph.push({
date: {
year: day.getFullYear(),
month: day.getMonth() + 1, // In JavaScript, month is zero-based.
day: day.getDate()
},
count: count
});
}
res(graph);
});
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