Transfer Google Play Music to Spotify

transfer_gpm_to_spotify.js

// Cleaned up version of script from https://www.tunemymusic.com/
// to transfer from Google Play Music to Spotify
// with the ability to break at some point since
// I was going through the entire songs list

function sleep(ms) {
    return new Promise(resolve => setTimeout(resolve, ms))
}

function demo() {
    if (window.location.href.indexOf('play.google.com') != -1) {
        list = document.title + "|";
        document.getElementsByTagName("h2")[0].scrollIntoView();
        demo2();
    }
}
async function demo2() {
    if (added > 0) {
        added = 0;
        var playlist = document.querySelectorAll(".song-table tr.song-row");
        for (var i = 0; i < playlist.length; i++) {
            var l = playlist[i];
            title = l.querySelector('td[data-col="title"] .column-content').textContent;
            img = l.querySelector('td[data-col="title"] .column-content img').src;
            artist = l.querySelector('td[data-col="artist"] .column-content').textContent;
            // if (title.toLowerCase().startsWith('z')) {
            //     break;
            // }
            if (titles.indexOf(title + artist) == -1) {
                list = list + img + "***" + artist + "- " + title + "|";
                titles.push(title + artist);
                added++;
                total++
            }
        }
        if (added > 0) {
            playlist[Math.max(Math.round(playlist.length / 2), playlist.length - 5)].scrollIntoView();
            await sleep(250);
            demo2();
            return;
        }
    }
    if (total == 0) {
        alert('Go to the playlist you wish to download and only then click this bookmark.');
        return
    }
    var form = document.createElement("form");
    form.style.visibility = "hidden", form.method = "POST", form.action = "https://www.tunemymusic.com";
    var input = document.createElement("input");
    input.name = "list", input.value = list, form.appendChild(input), document.body.appendChild(form), form.submit()
}
added = 1;
total = 0;
titles = [];
demo();