// ==UserScript==
// @name         MB Auto Track Lengths
// @version      1.00
// @match        https://musicbrainz.org/release/*/discids
// @match        https://beta.musicbrainz.org/release/*/discids
// @match        https://musicbrainz.org/cdtoc/*
// @match        https://beta.musicbrainz.org/cdtoc/*
// @run-at       document-end
// @author       Anakunda
// @namespace    https://greasyfork.org/users/321857
// @copyright    2024, Anakunda (https://greasyfork.org/users/321857)
// @license      GPL-3.0-or-later
// @description  Auto sets track lengths for media by unique attached disc id.
// @require      https://openuserjs.org/src/libs/Anakunda/xhrLib.js
// @downloadURL none
// ==/UserScript==

'use strict';

function getTrackLengths(tr) {
	const setTrackLengths = Array.prototype.find.call(tr.querySelectorAll('td a'),
		a => a.textContent.trim() == 'Set track lengths');
	return setTrackLengths || null;
}

const isDiscIdRow = tr => ['odd', 'even'].some(cls => tr.classList.contains(cls));
const sections = document.location.pathname.startsWith('/release/') ? Array.from(document.body.querySelectorAll('table.tbl > tbody > tr.subh'), function(subh) {
	const discIds = [ ];
	for (let tr = subh.nextElementSibling; tr != null && isDiscIdRow(tr); tr = tr.nextElementSibling)
		discIds.push(getTrackLengths(tr));
	return discIds;
}) : document.location.pathname.startsWith('/cdtoc/') ?
	Array.prototype.filter.call(document.body.querySelectorAll('table.tbl > tbody > tr'), isDiscIdRow)
		.map(getTrackLengths) : null;
if (sections != null) sections.forEach(function(section) {
	if (section.length == 1) section = section.filter(Boolean); else return;
	if (section.length == 1) section = section[0]; else return;
	const postData = new URLSearchParams({ 'confirm.edit_note': '' });
	//postData.set('confirm.make_votable', 1);
	localXHR(section.href, { responseType: null }, postData).then(function(statusCode) {
		section.replaceWith(Object.assign(document.createElement('span'), {
			textContent: 'Track lengths successfully set',
			style: 'color: green;',
			title: 'Status code: ' + statusCode,
		}));
	}, function(reason) {
		section.replaceWith(Object.assign(document.createElement('span'), {
			textContent: 'Error setting track lengths',
			style: 'color: red;',
			title: reason,
		}));
	});
});