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notifications refactor

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added getMultiple which works with an array of nids
This commit is contained in:
barisusakli
2014-08-16 23:25:30 -04:00
parent dd9a383f46
commit 5ae7c92d55
3 changed files with 137 additions and 142 deletions
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199
src/user/notifications.js
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@@ -17,86 +17,22 @@ var async = require('async'),
(function(UserNotifications) {
UserNotifications.get = function(uid, callback) {
function getNotifications(set, start, stop, iterator, done) {
db.getSortedSetRevRange(set, start, stop, function(err, uniqueIds) {
if(err) {
return done(err);
}
if(!Array.isArray(uniqueIds) || !uniqueIds.length) {
return done(null, []);
}
if (uniqueIds.length > maxNotifs) {
uniqueIds.length = maxNotifs;
}
db.getObjectFields('uid:' + uid + ':notifications:uniqueId:nid', uniqueIds, function(err, uniqueIdToNids) {
if (err) {
return done(err);
}
var nidsToUniqueIds = {};
var nids = [];
uniqueIds.forEach(function(uniqueId) {
nidsToUniqueIds[uniqueIdToNids[uniqueId]] = uniqueId;
nids.push(uniqueIdToNids[uniqueId]);
});
async.map(nids, function(nid, next) {
notifications.get(nid, function(err, notif_data) {
if (err) {
return next(err);
}
if (!notif_data) {
if (process.env.NODE_ENV === 'development') {
winston.info('[notifications.get] nid ' + nid + ' not found. Removing.');
}
db.sortedSetRemove(set, nidsToUniqueIds[nid]);
db.deleteObjectField('uid:' + uid + ':notifications:uniqueId:nid', nidsToUniqueIds[nid]);
return next();
}
if (typeof iterator === 'function') {
iterator(notif_data, next);
} else {
next(null, notif_data);
}
});
}, done);
});
});
}
var maxNotifs = 15;
async.parallel({
unread: function(next) {
getNotifications('uid:' + uid + ':notifications:unread', 0, 9, function(notif_data, next) {
notif_data.read = false;
notif_data.readClass = !notif_data.read ? 'label-warning' : '';
next(null, notif_data);
}, next);
getNotificationsFromSet('uid:' + uid + ':notifications:unread', uid, 0, 9, maxNotifs, next);
},
read: function(next) {
getNotifications('uid:' + uid + ':notifications:read', 0, 9, function(notif_data, next) {
notif_data.read = true;
next(null, notif_data);
}, next);
getNotificationsFromSet('uid:' + uid + ':notifications:read', uid, 0, 9, maxNotifs, next);
}
}, function(err, notifications) {
function filterDeleted(notifObj) {
return !!notifObj;
}
if (err) {
return callback(err);
}
notifications.read = notifications.read.filter(filterDeleted);
notifications.unread = notifications.unread.filter(filterDeleted);
notifications.read = notifications.read.filter(Boolean);
notifications.unread = notifications.unread.filter(Boolean);
// Limit the number of notifications to `maxNotifs`, prioritising unread notifications
if (notifications.read.length + notifications.unread.length > maxNotifs) {
@@ -107,48 +43,71 @@ var async = require('async'),
});
};
UserNotifications.getAll = function(uid, limit, before, callback) {
var now = new Date();
function getNotificationsFromSet(set, uid, start, stop, max, callback) {
db.getSortedSetRevRange(set, start, stop, function(err, uniqueIds) {
if (err) {
return callback(err);
}
if(!Array.isArray(uniqueIds) || !uniqueIds.length) {
return callback(null, []);
}
if (uniqueIds.length > max) {
uniqueIds.length = max;
}
db.getObjectFields('uid:' + uid + ':notifications:uniqueId:nid', uniqueIds, function(err, uniqueIdToNids) {
if (err) {
return callback(err);
}
var nidsToUniqueIds = {};
var nids = [];
uniqueIds.forEach(function(uniqueId) {
nidsToUniqueIds[uniqueIdToNids[uniqueId]] = uniqueId;
nids.push(uniqueIdToNids[uniqueId]);
});
UserNotifications.getNotifications(nids, uid, function(err, notifications) {
if (err) {
return callback(err);
}
notifications.forEach(function(notification, index) {
if (!notification) {
if (process.env.NODE_ENV === 'development') {
winston.info('[notifications.get] nid ' + nids[index] + ' not found. Removing.');
}
db.sortedSetRemove(set, nidsToUniqueIds[nids[index]]);
db.deleteObjectField('uid:' + uid + ':notifications:uniqueId:nid', nidsToUniqueIds[nids[index]]);
}
});
callback(null, notifications);
});
});
});
}
UserNotifications.getAll = function(uid, limit, callback) {
if (!limit || parseInt(limit, 10) <= 0) {
limit = 25;
}
if (before) {
before = new Date(parseInt(before, 10));
}
db.getObjectValues('uid:' + uid + ':notifications:uniqueId:nid', function(err, nids) {
if (err) {
return callback(err);
}
async.map(nids, function(nid, next) {
notifications.get(nid, function(err, notif_data) {
if (err || !notif_data) {
return next(err);
}
UserNotifications.isNotificationRead(notif_data.nid, uid, function(err, isRead) {
if (err) {
return next(err);
}
notif_data.read = isRead;
next(null, notif_data);
});
});
}, function(err, notifs) {
UserNotifications.getNotifications(nids, uid, function(err, notifs) {
if (err) {
return callback(err);
}
notifs = notifs.filter(function(notif) {
return !!notif;
}).sort(function(a, b) {
notifs = notifs.filter(Boolean).sort(function(a, b) {
return parseInt(b.datetime, 10) - parseInt(a.datetime, 10);
}).map(function(notif) {
notif.datetimeISO = utils.toISOString(notif.datetime);
notif.readClass = !notif.read ? 'label-warning' : '';
return notif;
});
callback(null, notifs);
@@ -156,8 +115,34 @@ var async = require('async'),
});
};
UserNotifications.isNotificationRead = function(nid, uid, callback) {
db.isSortedSetMember('uid:' + uid + ':notifications:read', nid, callback);
UserNotifications.getNotifications = function(nids, uid, callback) {
notifications.getMultiple(nids, function(err, notifications) {
if (err) {
return callback(err);
}
var uniqueIds = notifications.map(function(notification) {
return notification ? notification.uniqueId : null;
});
db.isSortedSetMembers('uid:' + uid + ':notifications:read', uniqueIds, function(err, hasRead) {
if (err) {
return callback(err);
}
notifications = notifications.map(function(notification, index) {
if (!notification) {
return null;
}
notification.read = hasRead[index];
notification.datetimeISO = utils.toISOString(notification.datetime);
notification.readClass = !notification.read ? 'label-warning' : '';
return notification;
});
callback(null, notifications);
});
});
};
UserNotifications.getDailyUnread = function(uid, callback) {
@@ -182,9 +167,7 @@ var async = require('async'),
return uniqueIdToNids[uniqueId];
});
async.map(nids, function(nid, next) {
notifications.get(nid, next);
}, callback);
UserNotifications.getNotifications(nids, uid, callback);
});
});
};
@@ -212,15 +195,17 @@ var async = require('async'),
return uniqueIdsToNids[uniqueId];
});
async.filter(nids, function(nid, next) {
notifications.get(nid, function(err, notifObj) {
if (err || !notifObj) {
return next(false);
}
UserNotifications.getNotifications(nids, uid, function(err, notifications) {
if (err) {
return callback(err);
}
next(notifObj[field] === value.toString());
notifications = notifications.filter(function(notification) {
return !!notification || notification[field] !== value.toString();
}).map(function(notification) {
return notification.nid;
});
}, function(nids) {
callback(null, nids);
});
});