'use strict';

import e = require('express');
import Request = e.Request;
import Response = e.Response;
import reservationLib from '../lib/reservation';
import { ReservationConstants as rConstants } from '../constants/reservation.constants';
import * as _ from "lodash";


/**
 * /reservations/reserve
 *  post:
 *      description: Add bulk reservation for instruments
 *      responses:
 *      200:
 *          description: Response after successfully posting the request
 *      400:
 *          description: Failed to add a request
 *      500:
 *          description: Unexpected server error
 */

async function add(req: Request, res: Response) {

    try {
        const reservationObj = new reservationLib(req.params.facilityId || '/', req['user'].username);
        const listName = req.params.listName;
        let inputData = req.body;

        // extracting the instruments object 
        let instruments = _.pull(_.get(req.body, rConstants.INSTRUMENTS, []));

        let data = [];
        // checking the instruments object is not empty
        if(_.isArray(instruments) && _.isEmpty(instruments)){
            res.status(400).json({ error: rConstants.ERR_MSG_INSTRUMENT_EMPTY });
        }
        // adding the instruments objects
        await Promise.all(instruments.map(async (instrument) => {
            data.push(await reservationObj.add(req.params.listName, inputData, instrument ));
        }));
        res.send(data);

    } catch (error) {
        res.status(400).json({ error: error });
    }
}

exports.routes = [
    {
        path: '/:listName/reserve',
        httpMethod: ['POST'],
        middleware: [add],
        accessLevel: 'user'
    }
];