const models = require('../models');
import * as api from '../../client/src/api';
import { EndpointError, EndpointHandler, catchUnhandledErrors } from './types';

export const SongDetailsEndpointHandler: EndpointHandler = async (req: any, res: any) => {
    if (!api.checkSongDetailsRequest(req)) {
        const e: EndpointError = {
            internalMessage: 'Invalid SongDetails request: ' + JSON.stringify(req.body),
            httpStatus: 400
        };
        throw e;
    }

    await models.Song.findAll({
        include: [models.Artist, models.Album],
        where: {
            id: req.params.id
        }
    })
        .then((songs: any[]) => {
            if (songs.length != 1) {
                const e: EndpointError = {
                    internalMessage: 'There is no song with id ' + req.params.id + '.',
                    httpStatus: 400
                };
                throw e;
            }
            let song = songs[0];
            const response: api.SongDetailsResponse = {
                title: song.title,
                artistIds: song.Artists.map((artist:any) => artist.id),
                albumIds: song.Albums.map((album:any) => album.id),
                storeLinks: song.storeLinks,
            }
            res.send(response);
        })
        .catch(catchUnhandledErrors);
}