let url = 'http://localhost:50233';

function send(data) {
    console.log('sending', data);
    let xhr = new XMLHttpRequest();

    xhr.open('POST', 'http://localhost:50233');
    xhr.setRequestHeader('Content-Type', 'application/json');
    xhr.setRequestHeader('Access-Control-Allow-Origin', '*')
    xhr.send(JSON.stringify(data));
    xhr.addEventListener('abort', (event) => {
        console.error('XHR Abort', event);
    });
    xhr.addEventListener('error', (event) => {
        console.error('XHR Error', event);
    });
    xhr.addEventListener('timeout', (event) => {
        console.error('XHR Timeout', event);
    });
    xhr.addEventListener('load', (event) => {
        if (xhr.status != 200) {
            console.error('bad xhr response status: ' + xhr.status);
        }
    });
}

function sendNewSong(song) {
    send({ type: 'new-song', song: song });
}

function sendUpdateSong(song) {
    send({ type: 'update-song', song: song });
}

function sendAdvertisement() {
    send({ type: 'advertisement' });
}

function sendHeartbeat() {
    send({ type: 'heartbeat' });
}

browser.runtime.onMessage.addListener((message) => {
    message = JSON.parse(message);
	switch (message.type) {
		case 'new-song':
            sendNewSong(message.song);
            break;
		case 'update-song':
            sendUpdateSong(message.song);
            break;
        case 'advertisement':
            sendAdvertisement();
            break;
		case 'heartbeat':
            sendHeartbeat();
            break;
	}
});