PlayStore Redirect Buttons

Adds multiple buttons to redirect from Google PlayStore to different websites. Uses native <a> links for long-press/right-click open, and auto-refreshes when app id changes.
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// ==UserScript==
// @name         PlayStore Redirect Buttons
// @namespace    Multi-Redirect Buttons
// @version      2.6
// @description  Adds multiple buttons to redirect from Google PlayStore to different websites. Uses native <a> links for long-press/right-click open, and auto-refreshes when app id changes.
// @match        https://play.google.com/store/apps/details?id=*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=play.google.com
// @grant        GM_addStyle
// ==/UserScript==

(function () {
    'use strict';

    // ---- Helpers ----
    function getPackageId() {
        const m = location.href.match(/[?&]id=([a-zA-Z0-9._-]+)/);
        return m ? m[1] : null;
    }

    function addCSS() {
        const css = `
            .mr-buttons-container {
                display: flex;
                flex-wrap: wrap;
                gap: 4px;
                margin-top: 8px;
            }
            .mr-button {
                color: #fff;
                background: #555;
                font-family: Roboto, Arial, sans-serif;
                font-size: .9rem;
                font-weight: 500;
                height: 36px;
                padding: 0 12px;
                border-radius: 8px;
                display: inline-flex;
                align-items: center;
                justify-content: center;
                box-sizing: border-box;
                transition: transform 0.2s, filter 0.2s;
                text-decoration: none; /* anchor, styled like button */
                cursor: pointer;
            }
            .mr-button:hover {
                filter: brightness(0.85);
                transform: translateY(-2px);
            }
        `;
        if (!document.getElementById('mr-style')) {
            const style = document.createElement('style');
            style.id = 'mr-style';
            style.textContent = css;
            document.head.appendChild(style);
        }
    }

    function findMount() {
        // Prefer Install button area (Chromium placement), fallback to title (Firefox-friendly)
        const installBtn = document.querySelector('button[aria-label^="Install"]');
        if (installBtn) {
            const mount = installBtn.closest('div');
            if (mount) return mount;
        }
        const titleSpan = document.querySelector('h1 span');
        if (titleSpan && titleSpan.parentElement) return titleSpan.parentElement;
        return null;
    }

    // ---- Main injection ----
    function insertButtons(pkgId) {
        if (!pkgId) return false;
        if (document.querySelector('.mr-buttons-container')) return true;

        const parent = findMount();
        if (!parent) return false;

        addCSS();

        const container = document.createElement('div');
        container.className = 'mr-buttons-container';
        container.setAttribute('data-pkg', pkgId);
        parent.appendChild(container);

        const buttons = [
            { text: 'A2zapk History', url: `https://a2zapk.io/History/${pkgId}/`, color: '#00875f' },
            { text: 'A2zapk Download', url: `https://a2zapk.io/apk/${pkgId}.html`, color: '#00875f' },
            { text: 'APKMirror',      url: `https://www.apkmirror.com/?post_type=app_release&searchtype=apk&s=${pkgId}`, color: '#FF8B14' },
            { text: 'APKPure',        url: `https://apkpure.com/search?q=${pkgId}`, color: '#24cd77' },
            { text: 'APKCombo',       url: `https://apkcombo.com/search?q=${pkgId}`, color: '#286090' }
        ];

        for (const b of buttons) {
            const link = document.createElement('a');
            link.textContent = b.text;
            link.href = b.url;
            link.target = '_blank'; // native new tab; enables long-press/right-click menus
            link.rel = 'noopener';  // safety
            link.className = 'mr-button';
            link.style.backgroundColor = b.color;
            container.appendChild(link);
        }

        return true;
    }

    function ensureButtons() {
        const pkg = getPackageId();
        let attempts = 0;
        const maxAttempts = 20; // ~10s

        const tryInject = () => {
            attempts++;
            if (insertButtons(pkg)) return; // success, stop retries
            if (attempts < maxAttempts) setTimeout(tryInject, 500);
        };
        tryInject();
    }

    // ---- Initial load: keep observing until DOM settles ----
    const observer = new MutationObserver(() => {
        // Try to inject repeatedly as Play Store lazily builds the DOM
        ensureButtons();
    });
    observer.observe(document.body, { childList: true, subtree: true });

    // Run once on script start
    ensureButtons();

    // ---- Auto refresh when navigating between apps (id changes) ----
    let lastPkg = getPackageId();
    setInterval(() => {
        const pkg = getPackageId();
        if (pkg && lastPkg && pkg !== lastPkg) {
            // Refresh once to force clean DOM rebuild and reliable placement
            location.reload();
        }
        lastPkg = pkg || lastPkg;
    }, 1000);
})();