const models = require('../models');
import * as api from '../../client/src/api';

export const CreateSongEndpointHandler = (req: any, res: any) => {
  if (!api.checkCreateSongRequest(req)) {
    console.log('Invalid CreateSong request: ' + JSON.stringify(req.body));
    res.sendStatus(400);
    return;
  }
  const reqObject: api.CreateSongRequest = req.body;
  console.log("Request create song: ", reqObject); // TODO: remove
  // First check that the artist exists.
  models.Artist.findAll({
    where: { id: reqObject.artistId }
  })
    .then((artist: any[]) => {
      if (artist.length != 1) {
        console.log('Invalid CreateSong request: ' + JSON.stringify(req.body)
          + ". There is no artist with id " + reqObject.artistId + ".");
        res.sendStatus(400);
        return;
      }
      models.Song.create({
        title: reqObject.title,
        ArtistId: reqObject.artistId
      })
        .then((song: any) => {
          const responseObject: api.CreateSongResponse = {
            id: song.id
          };
          res.status(200).send(responseObject);
        })
    })
}