const express = require('express');
const router = express.Router();
const jwt = require('jsonwebtoken');
const AvtocodProvider = require('../data_providers/avtocod');
const Vin01Provider = require('../data_providers/vin01');

const makeError = error => ({ success: false, error });

router.post('/check', async (req, res) => {
	const number = req.body.number.replace(/ /g, '').toUpperCase();
	const googleIdToken = req.body.googleIdToken;
	const forceUpdate = req.body.forceUpdate.toLowerCase() == 'true';
	const { login } = req.user;

	let collection = req.db.collection('vehicles');
	let vehicles = await collection.find({ number }).toArray();
	if(vehicles.length > 0 && !forceUpdate) {
		res.send({ success: true, data: vehicles[0] });
	} else {
		try {
			let autocodPromise = AvtocodProvider.getReport(number);
			let all = [autocodPromise];

			if(googleIdToken) {
				let vin01Promise = Vin01Provider.getReport(number, googleIdToken);
				all.push(vin01Promise);
			}
			let [autocod, vin01] = await Promise.allSettled(all);
			if(autocod.status == 'fulfilled') {
				let vehicle = autocod.value;
				vehicle.addedBy = login;
				if(vin01?.status == 'fulfilled' && vin01.value?.brand?.name?.original == vehicle?.brand?.name?.original) {
					vehicle.vin1 = vin01.value.vin1;
					vehicle.vin2 = vin01.value.vin2;
					vehicle.color = vin01.value.color;
					vehicle.ownershipPeriods = vin01.value.ownershipPeriods;
				}
				await collection.replaceOne({ number }, vehicle, { upsert: true });
				res.status(201).send({ success: true, data: vehicle });
			} else {
				throw Error(autocod.reason);
			}
		} catch(ex) {
			res.send(makeError(ex.message));
			console.error(ex);
		}
	}
});

router.get('/', async (req, res) => {
	const { limit, query } = req.query;

	console.log('limit:', limit);
	console.log('query:', query);

	let findQuery = {};

	if(query) {
		findQuery.number = RegExp(query);
	}

	try {
		let collection = req.db.collection('vehicles');
		let vehicles = await collection.find(findQuery).sort({ addedDate: -1 }).limit(parseInt(limit)).toArray();
		res.send({ success: true, data: vehicles });
	} catch(ex) {
		res.send(makeError('Error reading vehicles from DB'));
		console.error(ex);
	}
});

router.get('/shared_report', async (req, res) => {
	try {
		let { plate_number } = jwt.verify(req.query.token, '#TheTruthIsOutThere');
		let collection = req.db.collection('vehicles');
		let vehicles = await collection.find({ plate_number }).toArray();
		if(vehicles.length > 0) {
			res.send({ success: true, data: vehicles[0] });
		} else {
			res.send(makeError('Vehicle not found'));
		}
	} catch(ex) {
		res.send(makeError(ex.message));
		console.error(ex);
	}
});

module.exports = router;