Gemini Auto Model Selector

Automatically select default model (thinking). You can choose default model in my userscript.
سوئال سوراش، ئوبزور يېزىش ياكى قوليازمىنى پاش قىلىش.
Wrap lines
// ==UserScript==
// @name         Gemini Auto Model Selector
// @namespace    http://greasyfork.org/
// @version      1.6
// @description  Automatically select default model (thinking). You can choose default model in my userscript.
// @author       Bui Quoc Dung
// @match        https://gemini.google.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    if (window.self !== window.top) return;

    // ==================== MODEL MAPPING ====================
    const MODEL_MAP = {
        0: { keywords: ["Fast", "Nhanh"] },
        1: { keywords: ["Thinking", "Tư duy"] },
        2: { keywords: ["Pro"] }
    };

    // ==================== SITE CONFIG ====================
    const siteConfig = {
        selectedModelIndex: 1,

        selectors: {
            pickerButton: 'button[data-test-id="bard-mode-menu-button"]',
            menuButtons: 'button[role="menuitemradio"]'
        },
        timings: {
            menuOpenDelay: 500,
            cooldown: 2000
        }
    };

    let isSwitching = false;

    function checkAndSwitch() {
        if (isSwitching) return;

        const pickerBtn = document.querySelector(siteConfig.selectors.pickerButton);
        if (!pickerBtn) return;

        const targetModel = MODEL_MAP[siteConfig.selectedModelIndex];
        const currentLabel = pickerBtn.innerText.trim();

        const isCorrect = targetModel.keywords.some(k => currentLabel.includes(k));

        if (isCorrect) return;

        isSwitching = true;
        pickerBtn.click();

        setTimeout(() => {
            const buttons = document.querySelectorAll(siteConfig.selectors.menuButtons);
            const targetBtn = buttons[siteConfig.selectedModelIndex];

            if (targetBtn) {
                targetBtn.click();
            } else {
                document.body.click();
            }

            setTimeout(() => { isSwitching = false; }, siteConfig.timings.cooldown);
        }, siteConfig.timings.menuOpenDelay);
    }

    const observer = new MutationObserver(() => checkAndSwitch());
    observer.observe(document.body, { childList: true, subtree: true });

    checkAndSwitch();
})();