enable firebase configuration

functions/.gitignore

@@ -0,0 +1 @@
+node_modules/

functions/index.js

@@ -0,0 +1,29 @@
+const functions = require('firebase-functions');
+const admin = require('firebase-admin')
+
+const { configureApplication } = require('./lib/app')
+const { createAppLogger } = require('../lib/log-utils')
+const {
+  createRouteLogger,
+  createErrorLogger,
+} = require('../lib/middlewares')
+
+admin.initializeApp()
+
+const isDevelopment = process.env.NODE_ENV === 'development'
+
+const appLogger = createAppLogger({ dev: isDevelopment })
+const errorLogger = createErrorLogger({ dev: isDevelopment })
+const routeLogger = isDevelopment ? createRouteLogger({ dev: isDevelopment }) : null
+const corsOptions = isDevelopment ? {
+  origin: 'http://localhost:5000',
+} : null
+
+const app = configureApplication({
+  rateLimitEnabled: false,
+  corsOptions,
+})
+
+exports.app = functions.https.onRequest(app)
+
+

functions/lib

@@ -0,0 +1 @@
+../lib

functions/package.json

@@ -0,0 +1,36 @@
+{
+  "name": "functions",
+  "description": "Cloud Functions for Firebase",
+  "scripts": {
+    "serve": "firebase emulators:start --only functions",
+    "shell": "firebase functions:shell",
+    "start": "npm run shell",
+    "deploy": "firebase deploy --only functions",
+    "logs": "firebase functions:log"
+  },
+  "engines": {
+    "node": "12"
+  },
+  "main": "index.js",
+  "dependencies": {
+    "firebase-admin": "^9.2.0",
+    "firebase-functions": "^3.11.0",
+    "body-parser": "^1.19.0",
+    "cheerio": "^1.0.0-rc.3",
+    "cors": "^2.8.5",
+    "dayjs": "^1.8.16",
+    "ejs": "^2.7.1",
+    "express": "^4.17.1",
+    "express-rate-limit": "^5.0.0",
+    "express-winston": "^4.0.1",
+    "ics": "^2.22.1",
+    "request": "^2.88.0",
+    "serve-favicon": "^2.5.0",
+    "winston": "^3.2.1",
+    "winston-daily-rotate-file": "^4.2.1"
+  },
+  "devDependencies": {
+    "firebase-functions-test": "^0.2.0"
+  },
+  "private": true
+}