// ==UserScript==
// @name         AliExpress Product Link Fixer
// @namespace    http://tampermonkey.net/
// @version      2.0
// @license      MIT
// @description  Enhance your AliExpress shopping experience by converting marketing links into direct product links, ensuring each product is easily accessible with a single click.
// @author       NewsGuyTor
// @match        https://*.aliexpress.com/*
// @icon         https://www.aliexpress.com/favicon.ico
// @grant        none
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    // Initialize the MutationObserver
    let observer;

    // Main function to fix links
    function fixLinks() {
        // Temporarily disconnect the observer to prevent infinite loops
        if (observer) observer.disconnect();

        try {
            removeMarketingAnchors();
            rewriteAnchorsWithProductIds();
            fixOrCreateLinksForDataProducts();
        } catch (err) {
            console.error("[AliExpress Product Link Fixer v2] Error in fixLinks():", err);
        }

        // Reconnect the observer after making changes
        if (observer) observer.observe(document.body, { childList: true, subtree: true });
    }

    /**
     * A) Remove "marketing" anchors that have /gcp/ or /ssr/ without ?productIds=...
     *    Then unwrap them to expose individual product blocks
     */
    function removeMarketingAnchors() {
        const anchors = document.querySelectorAll('a[href*="/gcp/"]:not([data-alifix-done]), a[href*="/ssr/"]:not([data-alifix-done])');

        anchors.forEach(a => {
            if (a.dataset.alifixDone) return; // Skip already processed anchors

            const url = new URL(a.href);
            if (!url.searchParams.has('productIds')) {
                // Mark the anchor as processed
                a.dataset.alifixDone = "1";
                // Remove the anchor but keep its children in the DOM
                unwrapAnchor(a);
            }
        });
    }

    /**
     * B) Rewrite anchors that contain ?productIds=... to direct product pages
     */
    function rewriteAnchorsWithProductIds() {
        const anchors = document.querySelectorAll('a[href*="/gcp/"]:not([data-alifix-done]), a[href*="/ssr/"]:not([data-alifix-done])');

        anchors.forEach(a => {
            if (a.dataset.alifixDone) return; // Skip already processed anchors

            const url = new URL(a.href);
            const pid = url.searchParams.get('productIds');
            if (pid) {
                a.href = `https://${url.host}/item/${pid}.html`;
                a.dataset.alifixDone = "1"; // Mark as processed
            }
        });
    }

    /**
     * C) Ensure each <div data-product-ids="..."> has a clickable link
     *    Either by fixing existing anchors or creating new ones
     */
    function fixOrCreateLinksForDataProducts() {
        const divs = document.querySelectorAll('[data-product-ids]:not([data-alifix-done])');

        divs.forEach(div => {
            // Mark the div as processed
            div.dataset.alifixDone = "1";

            const pid = div.dataset.productIds;
            if (!pid) return;

            // Check if there's already an <a> inside the div
            const existingAnchor = div.querySelector('a[href]');
            if (existingAnchor) {
                if (!existingAnchor.dataset.alifixDone) {
                    existingAnchor.href = `https://${location.host}/item/${pid}.html`;
                    existingAnchor.dataset.alifixDone = "1"; // Mark as processed
                }
            } else {
                // No anchor found, create one around the div
                const link = document.createElement('a');
                link.href = `https://${location.host}/item/${pid}.html`;
                link.dataset.alifixDone = "1";
                // Optionally, style the link to display as block to ensure full area is clickable
                link.style.display = "block";
                // Insert the link before the div
                div.parentNode.insertBefore(link, div);
                // Move the div inside the new link
                link.appendChild(div);
            }
        });
    }

    /**
     * Helper function to unwrap an anchor tag but keep its child elements
     * @param {HTMLElement} anchor - The anchor element to unwrap
     */
    function unwrapAnchor(anchor) {
        const parent = anchor.parentNode;
        if (!parent) return;
        while (anchor.firstChild) {
            parent.insertBefore(anchor.firstChild, anchor);
        }
        parent.removeChild(anchor);
    }

    // Initial execution on page load
    fixLinks();

    // Set up the MutationObserver to watch for dynamic content changes
    observer = new MutationObserver(fixLinks);
    observer.observe(document.body, { childList: true, subtree: true });

})();