let express = require('express')
let logger = require('morgan')
let bodyParser = require('body-parser')
let admin = require("firebase-admin");
let serviceAccount = require("./secrets/de-iot-firebase-adminsdk-puz9e-be74faaf8c.json");

let firebaseadmin = admin.initializeApp({
  credential: admin.credential.cert(serviceAccount),
  databaseURL: "https://de-iot.firebaseio.com"
})

const axios = require('axios')

let db = admin.firestore();
let FieldValue = require('firebase-admin').firestore.FieldValue;
let auth = admin.auth();

let app = express()
app.use(bodyParser.json())
app.use(bodyParser.urlencoded({extended: true}))
app.use(logger('dev'))
app.use(express.static('views'))

app.set('view engine', 'ejs')
app.set('views', __dirname + '/views')


app.get('/', function(request, responce){
	responce.render('index.ejs')
})


app.post('/submit', function(request, responce){
	if (dataValidation(request)) {
		let uid = authCheck(request)
		if (uid) {
			let data = {
				timestamp: FieldValue.serverTimestamp(),
				value1: request.body.var1,
				value2: Number(request.body.var2),
				uploader: uid
			}
			db.collection('logs').doc().set(data)
			.then(function(){
				responce.send({success:true, error:null})
			})
			.catch(e => (console.log(e)))

		}
		else {
			responce.send({success:false, error:"Auth Error"})
		}
	}
	else {
		responce.send({success:false, error:"Data Validation"})
	}
})

app.post('/light', async function(request, responce){
	if (dataVal5(request)) {
		let uid = await authCheck(request)
		if (uid) {
			let data = {
				isOn: s2b(request.body.state),
				brightness: Number(request.body.brightness),
				color: String(request.body.color),
				lastChangedBy: uid
			}
			.then(function(){
				responce.send({success:true, error:null})
			})
			.catch(e => {
				console.log(e)
				responce.send({success:false, error:"Internal, " + e})
			})
		}
		else {
			responce.send({success:false, error:"Auth Error"})
		}
	}
	else {
		responce.send({success:false, error:"Data Validation"})
		console.log(request.body)
	}
})

app.post('/zlight', async function(request, responce){
	let isOn = s2b(request.body.state)
	let brightness = Number(request.body.brightness)
	let color = Number(request.body.color)
	let sendD = {
            brightness: brightness,
            temperature: color,
            transition_period: 250,
            power: isOn
        }
    console.log(sendD)

    axios.post('http://192.168.1.175:8080/api/v1/devices/local/led/brightness', sendD)
	.then((res) => {
	  console.log(`statusCode: ${res.statusCode}`)
	  responce.send({success:true})
	})
	.catch((error) => {
	  console.error(error)
	})
})


app.post('/gst-debug', async function(request, responce){
	db.collection('apiData').doc('light').get()
	.then(doc => {
		let data = doc.data()
		responce.send({success:true, state:data.isOn})
	})
})

app.post('/get-api', async function(request, responce){
	if (dataVal6(request)) {
		let uid = await authCheck(request)
		if (uid) {
			var targetService = String(request.body.service)
			db.collection('apiData').doc(targetService).get()
			.then(doc => {
			  if (!doc.exists) {
				responce.send({success:false, error:"Service does not exist"})
			  } else {
				responce.send({success:true, data:doc.data()})
			  }
			})
			.catch(e => {
				responce.send({success:false, error:"Internal, " + e})
			});

		}
		else {
			responce.send({success:false, error:"Auth Error"})
		}
	}
	else {
		responce.send({success:false, error:"Data Validation"})
	}
})



function dataValidation(data){
	if (data.body.var1) {
		if (data.body.var2) {
			if (Number(data.body.var2)) {
				return true
			}
		}
	}
	return false
}

function dataVal6(data){
	if (String(data.body.service) && String(data.body.authToken)) {
		return true
	}
	return false
}

function dataVal5(data){
	if ((data.body.state == 'true' || data.body.state == 'false') && Number(data.body.brightness) && String(data.body.color) && String(data.body.authToken)) {
		return true
	}
	return false
}

function s2b(string){
    switch(string.toLowerCase().trim()){
        case "true": case "yes": case 'on': case "1": return true
        case "false": case "no": case 'off': case "0": case null: return false
        default: return false
    }
}

async function authCheck(data) {
	let uid = false
	console.log(data.body.authToken)
	decodedToken = await admin.auth().verifyIdToken(data.body.authToken).catch(e=>{console.log(e)})
	uid = decodedToken.uid
	return uid
}


app.get('*', function(request, responce){
	responce.render('404.ejs')
})

app.post('*', function(request, responce){
	responce.status(404).send({success:false, error:"404"})
})

var port = 5050

app.listen(port, function() {
	console.log('Server running on port ' + port)
})