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

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

    await models.Artist.findAll({
        offset: reqObject.offset,
        limit: reqObject.limit,
    })
        .then((artists: any[]) => {
            const response: api.QueryArtistsResponse = {
                ids: artists.map((artist: any) => {
                    return artist.id
                })
            }
            res.send(response);
        })
        .catch(catchUnhandledErrors);
}