var {google} =require('googleapis');
var service = google.youtube('v3');
const oauth2Service = require('./oauth2');

function getPlaylistData(oauth2Client, channelId) {
    service.playlists.list({
        auth: oauth2Client,
        part: 'id, snippet',
        fields: 'items(id, snippet(title, description, thumbnails(default(url))))',
        channelId: channelId
    }, function(err, response) {
    if(err) {
        console.log('The API returned an error: ' + err);
        return;
    }
    var channels = response.data.items;
        if (channels.length == 0){
            console.log('No channel found.')
        } else {
            console.log(JSON.stringify(channels, null, 4));
        }
    });
}

oauth2Service.refreshClient()
    .then((client) => {
        getPlaylistData(client, 'UCx6jsZ02B4K3SECUrkgPyzg');
    })
    .catch(console.error);