Convert Statistics Package to JS (#6447)

* convert statistics package to js

* amend

* fix code style

packages/rocketchat-statistics/lib/rocketchat.js

@@ -0,0 +1 @@
+RocketChat.statistics = {};

packages/rocketchat-statistics/package.js

@@ -9,16 +9,15 @@ Package.onUse(function(api) {
 	api.use([
 		'mongo',
 		'ecmascript',
-		'coffeescript',
 		'rocketchat:lib'
 	]);
 
 	// Statistics
-	api.addFiles('lib/rocketchat.coffee', [ 'client', 'server' ]);
+	api.addFiles('lib/rocketchat.js', [ 'client', 'server' ]);
 	api.addFiles([
-		'server/models/Statistics.coffee',
+		'server/models/Statistics.js',
 		'server/functions/get.js',
-		'server/functions/save.coffee',
-		'server/methods/getStatistics.coffee'
+		'server/functions/save.js',
+		'server/methods/getStatistics.js'
 	], 'server');
 });

packages/rocketchat-statistics/server/functions/save.js

@@ -0,0 +1,6 @@
+RocketChat.statistics.save = function() {
+	const statistics = RocketChat.statistics.get();
+	statistics.createdAt = new Date;
+	RocketChat.models.Statistics.insert(statistics);
+	return statistics;
+};

packages/rocketchat-statistics/server/methods/getStatistics.js

@@ -0,0 +1,17 @@
+Meteor.methods({
+	getStatistics(refresh) {
+		if (!Meteor.userId()) {
+			throw new Meteor.Error('error-invalid-user', 'Invalid user', { method: 'getStatistics' });
+		}
+
+		if (RocketChat.authz.hasPermission(Meteor.userId(), 'view-statistics') !== true) {
+			throw new Meteor.Error('error-not-allowed', 'Not allowed', { method: 'getStatistics' });
+		}
+
+		if (refresh) {
+			return RocketChat.statistics.save();
+		} else {
+			return RocketChat.models.Statistics.findLast();
+		}
+	}
+});

packages/rocketchat-statistics/server/models/Statistics.js

@@ -0,0 +1,24 @@
+RocketChat.models.Statistics = new class extends RocketChat.models._Base {
+	constructor() {
+		super('statistics');
+
+		this.tryEnsureIndex({ 'createdAt': 1 });
+	}
+
+	// FIND ONE
+	findOneById(_id, options) {
+		const query = { _id };
+		return this.findOne(query, options);
+	}
+
+	findLast() {
+		const options = {
+			sort: {
+				createdAt: -1
+			},
+			limit: 1
+		};
+		const records = this.find({}, options).fetch();
+		return records && records[0];
+	}
+};