Add initial firebase connection logic

src/Units.extollo.ts

@@ -1,17 +1,17 @@
 import {Config, Controllers, HTTPServer, Files, Middlewares, Routing, Unit} from '@extollo/lib'
 import {Database, Models} from "@extollo/orm";
 import {CommandLine} from "@extollo/cli";
-import {Internationalization} from "@extollo/i18n";
+import {FirebaseUnit} from "./app/units/FirebaseUnit";
 
 export const Units = [
     Config,
+    FirebaseUnit,
     Files,
     CommandLine,
     Controllers,
     Middlewares,
     Database,
     Models,
-    Internationalization,
 
     Routing,
     HTTPServer,

src/app/configs/app.config.ts

@@ -1,5 +1,15 @@
 import { env } from '@extollo/lib'
+import * as fs from "fs"
 
 export default {
     name: env('APP_NAME', 'Extollo'),
+
+    firebase: {
+        credentials: JSON.parse(
+            fs.readFileSync(env('FIREBASE_CREDENTIALS'))
+                .toString('utf-8')
+        ),
+
+        defaultRTDB: env('FIREBASE_DEFAULT_RTDB', 'https://loc-chain-default-rtdb.firebaseio.com'),
+    }
 }

src/app/http/controllers/main/Home.controller.ts

@@ -1,21 +1,16 @@
 import {Controller, view, Session} from '@extollo/lib';
 import {Inject, Injectable} from "@extollo/di";
-import {Locale} from "@extollo/i18n"
 
 @Injectable()
 export class Home extends Controller {
     @Inject()
     protected readonly session!: Session;
 
-    @Inject()
-    protected readonly locale!: Locale;
-
     public welcome() {
         this.session.set('app_visits', this.session.get('app_visits', 0) + 1)
 
         return view('welcome', {
             app_visits: this.session.get('app_visits'),
-            locale: this.locale.helper(),
         })
     }
 }

src/app/units/FirebaseUnit.ts

@@ -0,0 +1,37 @@
+import {Singleton, Inject} from "@extollo/di"
+import {Unit, Logging, Config} from "@extollo/lib"
+import * as firebase from "firebase-admin"
+
+/**
+ * FirebaseUnit Unit
+ * ---------------------------------------
+ * Fetch credentials from config and setup the firebase-admin connection.
+ */
+@Singleton()
+export class FirebaseUnit extends Unit {
+    protected _firebase = firebase;
+
+    @Inject()
+    protected readonly logging!: Logging
+
+    @Inject()
+    protected readonly config!: Config
+
+    get() {
+        return this._firebase
+    }
+
+    /** Called on app start. */
+    public async up() {
+        this.logging.info('Initializing Firebase application credentials...')
+        this._firebase.initializeApp({
+            credential: firebase.credential.cert(this.config.get('app.firebase.credentials')),
+            databaseURL: this.config.get('app.firebase.defaultRTDB'),
+        })
+    }
+
+    /** Called on app shutdown. */
+    public async down() {
+
+    }
+}