var coreActions = require('../core/actions');
var uiActions = require('../ui/actions');
var helpers = require('../../helpers');

/**
 * Send an ajax request to the LastFM API
 *
 * @param dispatch = obj
 * @param endpoint = String
 * @param params = String
 **/
var sendRequest = (dispatch, endpoint, params) => {
    return new Promise((resolve, reject) => {
        const loader_key = helpers.generateGuid();

        dispatch(uiActions.startLoading(loader_key, ',discogs_'+endpoint));

        let key = 'CXIwsVMAjrXIVitBWgqd';
        let secret = 'KiEUfwKpebxRnEHlKoXnYIftJxeuqjTK';

        var config = {
            method: 'GET',
            cache: true,
            timeout: 30000,
            url: `https://api.discogs.com/${endpoint}?key=${key}&secret=${secret}&${params}`,
            headers: {
                'user-agent': 'Iris/1.0',
            },
        }

        $.ajax(config).then(
                response => {
                    dispatch(uiActions.stopLoading(loader_key));
                    if (response.error){
                        reject({
                            config: config,
                            error: response
                        });
                    } else {
                        resolve(response);
                    }
                },
                (xhr, status, error) => {
                    dispatch(uiActions.stopLoading(loader_key));

                    // Snatch a more meaningful error
                    var description = null;
                    if (xhr && xhr.responseJSON && xhr.responseJSON.message){
                        description = xhr.responseJSON.message;
                    }

                    reject({
                        config: config,
                        error: error,
                        description: description,
                        status: status,
                        xhr: xhr
                    });
                }
            )
    })
}

export function findArtist(name){
    return sendRequest(dispatch, 'artists/'+artist.mbid, 'inc=url-rels')
        .then(
            response => {
                if (response){
                    const image_relations = response.relations.filter(rel => rel.type == "image");
                    if (image_relations) {
                        const updated_artist = {
                            uri: uri,
                            images: image_relations.map(relation =>
                                relation.url.resource.replace("File:","Special:FilePath/")
                            ),
                        }
                        dispatch(coreActions.artistLoaded(updated_artist));
                    }
                }
            },
            error => {
                console.log(`Musicbrainz: No results for ${artist.mbid}`)
            }
        )
}

export function getArtistImages(uri, artist){
    return (dispatch, getState) => {
        sendRequest(dispatch, 'database/search', `query=${artist.name}`)
            .then(
                response => {
                    if (response){
                        if (response.results && response.results[0].cover_image) {
                            const updated_artist = {
                                uri: uri,
                                images: [response.results[0].cover_image],
                            }
                            dispatch(coreActions.artistLoaded(updated_artist));
                        }
                    }
                },
                error => {
                    console.log(`Discogs: No results for ${artist.name}`)
                }
            )
    }
}