const Router = require('koa-router');
const router = new Router();
const koaBody = require('koa-body');

// import tools 
const mysql = require('../../libs/mysql_pool.js');
const config = require('../../config.json');

// routes 
const user_api = require('./user.js');

// api response handler
router.use(async(c, n) => {
    c.db = await mysql.getConn();
    c.syncQuery = (query, param = null) => {
        return new Promise((resolve, reject) => {
            if (param != null) {
                c.db.query(query, param, (err, row) => {
                    if (err) return reject(err);
                    return resolve(row)
                });
            } else {
                c.db.query(query, (err, row) => {
                    if (err) return reject(err);
                    return resolve(row)
                });
            }
        })
    }
    await n();
    if ('db' in c && typeof c.db == 'object' && 'release' in c.db && typeof c.db.release == 'function') c.db.release();
    switch (typeof c.body) {
        case 'undefined':
            c.body = { errorCode: 'ERR9999', status: 0 };
        case 'string':
            c.body = { errorCode: c.body, status: 0 };
        default:
            c.body = {
                data: c.body,
                status: 1
            }
    }
})


// enable bodyParser
router.all('*', koaBody({
    multipart: true,
    // upload file size 10mb
    maxFieldSize: 10 * 1024 * 1024
}), async(c, n) => { await n(); })

router
    .get('/', async(c, n) => {
        c.body = {
            msg: 'API Endpoint'
        };
    })
    .use('/user', user_api.routes())

module.exports = router;