import { Router } from 'express';
import {
	getGroupByID,
	getPoolByID,
	getPoolsWithUser,
	getUserByID,
	groups,
	users,
} from './data';

export const router = Router();

router.get('/user', (req, res) => {
	if (typeof req.query.userID != 'string') {
		return;
	}

	let userID = req.query.userID;
	let user = getUserByID(userID);

	if (user) {
		res.json({ status: 'success', data: user });
	} else {
		res.json({ status: 'error', error: 'not_found' });
	}
});

router.post('/user', (req, res) => {
	if (req.body.userID in users) {
		res.json({ status: 'error', error: 'already_exists' });
	} else {
		users[req.body.userID] = {
			id: req.body.userID,
			first_name: req.body.first_name,
			last_name: req.body.last_name,
		};
		res.json({ status: 'success' });
	}
});

router.delete('/user', (req, res) => {
	delete users[req.body.userID];
	res.json({ status: 'success' });
});

router.get('/pool', (req, res) => {
	if (typeof req.query.poolID != 'string') {
		return;
	}

	let poolID = req.query.poolID;
	let pool = getPoolByID(poolID);

	if (pool) {
		res.json({ status: 'success', data: pool });
	} else {
		res.json({ status: 'error', error: 'not_found' });
	}
});

router.get('/group/:groupID', (req, res) => {
	if (!(req.params.groupID in groups)) {
		res.send('invalid group id');
		return;
	}
	res.json(groups[req.params.groupID]);
});

router.post('/group', (req, res) => {
	groups[req.body.title] = {
		id: 'temp id 0',
		member_ids: [],
	};
});

router.patch('/group', (req, res) => {});

router.delete('/group', (req, res) => {
	delete groups[req.body.groupID];
});

router.get('/my_pools', (req, res) => {
	let userID = 'myfatemi04';
	let poolIDs = getPoolsWithUser(userID);
	res.json({ status: 'success', data: poolIDs.map((id) => getPoolByID(id)) });
});

router.get('/group', (req, res) => {
	if (typeof req.query.groupID != 'string') {
		return;
	}

	let groupID = req.query.groupID;
	let group = getGroupByID(groupID);

	if (group) {
		res.json({ status: 'success', data: group });
	} else {
		res.json({ status: 'error', error: 'not_found' });
	}
});