Reading from Database: index.js (don't forget to install all required dependencies!) Raw

index.js

const functions = require('firebase-functions'); //for firebase storage
const firebase = require('firebase-admin'); //for firebase database
const express = require('express'); // load express from node_modules

const app = express(); // instantiate express to use its functionality
const PORT = process.env.PORT || 3000; // set a port. Look to environment variable if avaialble

const firebaseApp = firebase.initializeApp(
    functions.config().firebase // use credentials from configured project
);

function getHouses() {
    const ref = firebaseApp.database().ref('houses'); //firebase database
    console.log('inside getHouses');
    return ref.once('value').then(snap => snap.val());
}

// ROUTES
app.get('/all', (request, response) => {
    console.log("showing all houses")
    getHouses().then(house => {
        console.log('returning a house');
        response.json({houses : house})
    });
});

app.get('/hello', (request, response) => {
    console.log("a request came in")
    response.json({message: "Welcome to my API"})
});

// Use with firebase serve command instead of app.listen
// make sure route rewrites are listed in firebase.json
exports.app = functions.https.onRequest(app);