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|
'use strict';
/**
* Module dependencies
*/
import * as mongo from 'mongodb';
import Notification from '../../models/notification';
import serialize from '../../serializers/notification';
import getFriends from '../../common/get-friends';
/**
* Get notifications
*
* @param {Object} params
* @param {Object} user
* @return {Promise<object>}
*/
module.exports = (params, user) =>
new Promise(async (res, rej) =>
{
// Get 'following' parameter
const following = params.following === 'true';
// Get 'mark_as_read' parameter
let markAsRead = params.mark_as_read;
if (markAsRead == null) {
markAsRead = true;
} else {
markAsRead = markAsRead === 'true';
}
// Get 'type' parameter
let type = params.type;
if (type !== undefined && type !== null) {
type = type.split(',').map(x => x.trim());
}
// 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');
}
const query = {
notifiee_id: user._id
};
const sort = {
_id: -1
};
if (following) {
// ID list of the user itself and other users who the user follows
const followingIds = await getFriends(user._id);
query.notifier_id = {
$in: followingIds
};
}
if (type) {
query.type = {
$in: type
};
}
if (since !== null) {
sort._id = 1;
query._id = {
$gt: new mongo.ObjectID(since)
};
} else if (max !== null) {
query._id = {
$lt: new mongo.ObjectID(max)
};
}
// Issue query
const notifications = await Notification
.find(query, {}, {
limit: limit,
sort: sort
})
.toArray();
// Serialize
res(await Promise.all(notifications.map(async notification =>
await serialize(notification))));
// Mark as read all
if (notifications.length > 0 && markAsRead) {
const ids = notifications
.filter(x => x.is_read == false)
.map(x => x._id);
// Update documents
await Notification.update({
_id: { $in: ids }
}, {
$set: { is_read: true }
}, {
multi: true
});
}
});
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