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;
    }

    try {
        const songs = await models.Song.findAll({
            include: [models.Artist, models.Album, models.Tag],
            where: {
                id: req.params.id
            }
        });
        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),
            tagIds: song.Tags.map((tag: any) => tag.id),
            storeLinks: song.storeLinks,
        }
        await res.send(response);
    } catch (e) {
        catchUnhandledErrors(e);
    }
}