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122 lines (107 loc) · 2.72 KB
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/**
* Module Dependencies
*/
var async = require('async'),
Keen = require('keen.io');
/**
* Upload an image
* URL: /uploads
* Method: GET
* Auth Required: Yes
* @param {string} user_id This required param specifies the user id to filter by
* @returns {object} Returns a 201 status code with the upload object
*/
server.get('/stats/:user_id', function(req, res, next) {
// extract query params
var params = req.params || {};
var userId = params.user_id;
// async waterfall (see: https://github.com/caolan/async)
async.waterfall(
[
// keen query
function(cb) {
// configure instance of keenClient
var keenClient = Keen.configure({
projectId: config.keen.projectId,
writeKey: config.keen.writeKey,
readKey: config.keen.readKey,
masterKey: config.keen.masterKey,
});
// build query
var keenQuery = new Keen.Query('count', {
event_collection: 'views',
timeframe: 'this_30_days',
group_by: 'postId',
filters: [
{
property_name: 'postAuthorId',
operator: 'eq',
property_value: userId,
},
],
});
// run query
keenClient.run(keenQuery, function(err, res) {
if (err) {
cb(err);
}
function compareItems(a, b) {
return (a['result'] - b['result']) * -1;
}
var sortedItems = res.result;
sortedItems.sort(compareItems);
var topItems = sortedItems.slice(0, 5);
var postIds = [];
var postViewCounts = {};
// loop through top items
topItems.forEach(function(value) {
postIds.push(value['postId']);
postViewCounts[value['postId']] = value['result'];
});
cb(null, postIds, postViewCounts);
});
},
// database query
function(postIds, postViewCounts, cb) {
// run query if we have results
if (postIds.length == 0) {
var uploads = [];
cb(null, uploads);
} else {
db.query(
'SELECT * FROM uploads WHERE id IN (?)',
[postIds],
function(err, uploads) {
if (err) {
log.error(err);
return next(
new restify.InternalError(err.message),
);
}
uploads.forEach(function(upload) {
upload.viewCount = postViewCounts[upload.id];
});
function compareUploads(a, b) {
return (a['viewCount'] - b['viewCount']) * -1;
}
uploads.sort(compareUploads);
cb(null, uploads);
},
);
}
},
],
function(err, result) {
// catch all errors
if (err) {
// use global logger to log to console
log.error(err);
// return error message to client
return next(new restify.InternalError(err));
}
// send response to client
res.send(200, { mostViewed: result });
return next();
},
);
});