const express = require('express');
const compression = require('compression')
const bodyParser = require('body-parser');
const low = require('lowdb');
const lodashId = require('lodash-id');
const FileAsync = require('lowdb/adapters/FileAsync');
const app = express(); // app is an instance of express

app.use(compression()); // enables gzip compression
app.use(bodyParser.urlencoded({ extended: false })) // parse application/x-www-form-urlencoded
app.use(bodyParser.json()) // parse application/json
app.use(express.static(__dirname + '/build')); // serve static build site


app.get('/a', (req, res) => { 
res.send(process.env);

});


// Create database instance and start server
// const adapter = new FileAsync(__dirname + '/db.json');
low(new FileAsync(__dirname + '/db.json')) // production
// low(new FileAsync('/tmp/db.json')) // dev
	.then(db => {
		db._.mixin(lodashId);
		// DATABASE ROUTES 

// ==============

		app.post('/test',(req,res)=>{
					// "reason": {
				// 	"fitali": req.body.reason.toString() === "fvitali" ? 1:0,
				// 	"": req.body.reason.toString() === "" ? 1:0,
				// 	"": req.body.reason.toString() === "" ? 1:0,
				// }
			// try {
			// 	let test = table.updateById(req.body.id, { })
			// }
			// catch(e) {
			// }
			res.send(req.body);
		});

// ==============

		// GET /videotrack/:id? 
		app.get('/videotrack/:id?', (req, res) => {
			const videos = db.get('videos');
			req.params.id ?	res.send(videos.getById(req.params.id).value())	:	res.send(videos.value())
		});

		// POST /videotrack
		app.post('/videotrack', (req, res) => {
			const videos =	db.get('videos');
			const row = videos.getById(req.body.id);			
			if(row.value()) {
				row
				.update('timesWatched',(n) => ++n)
				.update('lastWatched',() => new Date().toISOString())
				.write()
				.then(output => res.send(output))
			} else {
				let newRow = {
					"id": req.body.id.toString(), 
					"timesWatched": 1,
					"lastWatched": new Date().toISOString(),
				}
				videos.push(newRow).last().write().then(output => res.send(output))
			}
		});
		
		// Set db default values
		return db.defaults({ videos: [] }).write();
	})
	.then(() => {
		app.listen(8000, () => console.log('listen on 8000')); // bind to port 8000 as required from specs
	});