Firebase Function Sample

Sample for Express

var functions = require("firebase-functions");
const express = require("express");

//Set up ExpressJS Server
const expressRouter = new express.Router();
//expressRouter.get('*', (req: any, res: { send: (arg0: string) => void; }) => {
//   res.send(`Hello *`); 
//});

expressRouter.get('/Test/:id', (req: any, res: any) => {
  //functions.console.log(req.params.id);
  
  res.send(`Hello Test`); 
});

expressRouter.get('/GetVersion', (req: any, res: any) => {
  res.send(`Hello GetVersion`); 
});

expressRouter.get('/*', (req: any, res: any) => {
  res.send(`NULL`); 
});

//Cloud Function
exports.express = functions.https.onRequest(expressRouter);

Sample Code2

var functions = require("firebase-functions");
const express = require('express');
const cors = require('cors');
const app = express();


//Init the session to the target firbease project
var admin = require("firebase-admin");
var serviceAccount = require("../Res/multimanagementsystem.json");
admin.initializeApp({
  credential: admin.credential.cert(serviceAccount),
  databaseURL: `https://${serviceAccount.project_id}-default-rtdb.firebaseio.com`
});
const db = admin.firestore();

// Automatically allow cross-origin requests
app.use(cors({ origin: true }));

// Add middleware to authenticate requests
//app.use(myMiddleware);

//Added by Jacky
const strVerion = "01.0001.20210315";

//
app.get('/getCurVersion', (request, response) => {
  response.json( {version:strVerion} );
})

//
app.get('/getUser', async(request, response) => {
  response.json( {version:strVerion} );
})


app.get('/:id/:name', async(request, response) => {
    functions.logger.info(request.params.id);
    functions.logger.info(request.params.name);

    const user = db.collection('users').doc(request.params.id);
    const doc = user.get();
    if (!doc.exists) {
    console.log('No such document!');
    } else {
    console.log('Document data:', doc.data());
    }

    response.json({version:strVerion});
});

/*
router.get('/getUser/:id',  (req, rsp)=>{
    functions.logger.info(req.params.id);

    const user = db.collection('users').doc(req.params.id);
    const doc = user.get();
    if (!doc.exists) {
    console.log('No such document!');
    } else {
    console.log('Document data:', doc.data());
    }

    rsp.json({version:strVerion});
});
*/

async function writeDBFunction() {
    const docRef = db.collection('users').doc('alovelace');
    await docRef.set({
        first: 'Ada',
        last: 'Lovelace',
        born: 1815
        });
}

app.get('/writeDB', async(request, response) => {
    writeDBFunction();
    response.send("Succeed to write DB!");
  });


async function readDBFunction() {
    const snapshot = await db.collection('users').get();
    functions.logger.info(snapshot, {structuredData: true});
}

app.get('/readDB', async(request, response) => {
    readDBFunction();
    response.send("Succeed to read DB!");
  });

// build multiple CRUD interfaces:
app.get('/:id', (req, res) => {
  res.send(req.params.id);
});

app.get('/', (req, res) => {
  res.send('list()');
});

app.get('/Test/:id', (req, res) => {
  //functions.console.log(req.params.id);  
  res.send(`Hello Test`); 
});

app.get('/GetVersion', (req, res) => {
  res.send(`Hello GetVersion`); 
});

app.get('/*', (req, res) => {
  res.send(`NULL`); 
});

/*
app.post('/', (req, res) => {
  res.send('create()');
});

app.put('/:id', (req, res) => {
  res.send(req.params.id + req.body);
});

app.delete('/:id', (req, res) => {
  res.send(req.params.id);
});
*/

// Expose Express API as a single Cloud Function:
// exports.managmentapi = functions.https.onRequest(app);

export const mainCloudFunctions = functions.region("europe-west3"); //Set region if necessary
export const managmentapi = mainCloudFunctions.https.onRequest(app);

{
  "compilerOptions": {
    "module": "commonjs",
    "noImplicitReturns": true,
    "noUnusedLocals": true,
    "outDir": "lib",
    "sourceMap": true,
    "strict": true,
    "target": "es2017",
    "noImplicitAny": false
  },
  "compileOnSave": true,
  "include": [
    "src"
  ]
}