app/service: Impl. cloud and relay service

app/service/cloud.js

+/*
+ * Tugas Besar 3 WBD - AMEN
+ */
+
+'use strict'
+
+const messaging = require('firebase-admin').messaging()
+
+let db = {}
+
+module.exports = {
+  register (id, token) {
+    db[id] = token
+  },
+
+  unregister (id) {
+    delete db[id]
+  },
+
+  async sendAsync (id, message) {
+    await messaging.sendToDevice(db[id], message)
+  }
+}

app/service/relay.js

+/*
+ * Tugas Besar 3 WBD - AMEN
+ */
+
+'use strict'
+
+const cloud = require('./cloud')
+
+let db = {}
+
+module.exports = {
+  associate (id, driverId) {
+    db[driverId] = id
+    db[id] = driverId
+  },
+
+  disassociate (id) {
+    let pairId = db[id]
+
+    delete db[id]
+    delete db[pairId]
+  },
+
+  async sendAsync (id, message) {
+    await cloud.send(db[id], message)
+  }
+}