R34 Auto Max Quality

Auto-select max quality up to limit / Автовыбор макс. качества
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// ==UserScript==
// @name         R34 Auto Max Quality
// @namespace    r34-auto-max-quality
// @version      1.1
// @description  Auto-select max quality up to limit / Автовыбор макс. качества
// @match        https://rule34video.com/video/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=rule34video.com
// @run-at       document-idle
// ==/UserScript==

(function () {
    'use strict';

    // USER SETTING / НАСТРОЙКА ПОЛЬЗОВАТЕЛЯ
    // 1 = 360p | 2 = 480p | 3 = 720p | 4 = 1080p | 5 = 4k
    const MAX_QUALITY = 4; // change here / менять здесь

    let locked = false;
    let lastUrl = location.href;

    function apply() {
        if (locked) return;

        const list = document.querySelector('.fp-settings-list');
        if (!list) return;

        const best = [...list.querySelectorAll('a[data-format]')]
            .map(a => ({ a, f: +a.dataset.format }))
            .filter(x => x.f <= MAX_QUALITY)
            .sort((a, b) => b.f - a.f)[0];

        if (best && !best.a.parentElement.classList.contains('is-selected')) {
            best.a.click();
        }
    }

    // manual selection → lock / ручной выбор → блокировка
    document.addEventListener('click', e => {
        const a = e.target.closest('.fp-settings-list a[data-format]');
        if (!a) return;

        const f = +a.dataset.format;
        if (f <= MAX_QUALITY) locked = true;
    });

    // video change → unlock / новое видео → сброс
    const obs = new MutationObserver(() => {
        if (location.href !== lastUrl) {
            lastUrl = location.href;
            locked = false;
            setTimeout(apply, 300);
        }
    });

    obs.observe(document.body, { childList: true, subtree: true });

    setTimeout(apply, 500);
})();