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ChatGPT Message Navigator

Displays a list of user and assistant responses in ChatGPT conversations for quick navigation.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         ChatGPT Message Navigator
// @namespace    https://violentmonkey.github.io/
// @version      1.1
// @description  Displays a list of user and assistant responses in ChatGPT conversations for quick navigation.
// @author       Bui Quoc Dung
// @match        https://chatgpt.com/*
// @grant        none
// @license      MIT
// ==/UserScript==

(function () {
    "use strict";

    // If panel already exists, do nothing
    if (document.getElementById("toc-panel") || document.getElementById("toc-handle")) {
        return;
    }

    // --- Insert CSS with dark mode support ---
    const css = document.createElement("style");
    css.textContent =
    /* Panel */
    `#toc-panel { position: fixed; top: 0; right: 0; width: 280px; height: 100%; background: #fafafa; box-shadow: -4px 0 8px rgba(0,0,0,0.1); font-family: sans-serif; font-size: 0.8rem; border-left: 1px solid #ddd; display: flex; flex-direction: column; z-index: 9998; visibility: hidden; }
    #toc-panel.visible { visibility: visible; }
    #toc-header { padding: 6px 10px; background: #ddd; border-bottom: 1px solid #ccc; font-weight: bold; flex-shrink: 0; }
    #toc-list { list-style: none; flex: 1; overflow-y: auto; margin: 0; padding: 6px; }
    #toc-list li { padding: 4px; cursor: pointer; border-radius: 3px; transition: background-color 0.2s; }
    #toc-list li:hover { background: #f0f0f0; }
    #toc-handle { position: fixed; top: 50%; right: 0; transform: translateY(-50%); width: 30px; height: 80px; background: #ccc; display: flex; align-items: center; justify-content: center; writing-mode: vertical-rl; text-orientation: mixed; cursor: pointer; font-weight: bold; user-select: none; z-index: 9999; transition: background 0.2s; }
    #toc-handle:hover { background: #bbb; }
    @keyframes highlightFade { 0% { background-color: #fffa99; } 100% { background-color: transparent; } }
    .toc-highlight { animation: highlightFade 1.5s forwards; }
    @media (prefers-color-scheme: dark) {
      #toc-panel { background: #333; border-left: 1px solid #555; box-shadow: -4px 0 8px rgba(0,0,0,0.7); }
      #toc-header { background: #555; border-bottom: 1px solid #666; color: #eee; }
      #toc-list li:hover { background: #444; }
      #toc-list { color: #eee; }
      #toc-handle { background: #555; color: #ddd; }
      #toc-handle:hover { background: #666; }
    }`;
    document.head.appendChild(css);

    // --- Create panel & handle ---
    const panel = document.createElement("div");
    panel.id = "toc-panel";
    panel.innerHTML = `
      <div id="toc-header">Conversation TOC</div>
      <ul id="toc-list"></ul>
    `;
    document.body.appendChild(panel);

    const handle = document.createElement("div");
    handle.id = "toc-handle";
    handle.textContent = "TOC";
    document.body.appendChild(handle);

    // Observed container, observer, etc.
    let chatContainer = null;
    let observer = null;
    let isScheduled = false;
    let timerId = null;

    // Debounce the TOC build to avoid high CPU usage on rapid changes
    function debounceBuildTOC() {
        if (isScheduled) return;
        isScheduled = true;
        timerId = setTimeout(function () {
            buildTOC();
            isScheduled = false;
        }, 300);
    }

    // Build/refresh the TOC
    function buildTOC() {
        const list = document.getElementById("toc-list");
        if (!list) return;
        list.innerHTML = "";

        // Find conversation turns
        const articles = (chatContainer || document).querySelectorAll("article[data-testid^='conversation-turn-']");
        if (!articles || articles.length === 0) {
            list.innerHTML = '<li style="opacity:0.7;font-style:italic;">Empty chat</li>';
            return;
        }

        // Loop over turns
        for (let i = 0; i < articles.length; i++) {
            const art = articles[i];
            const li = document.createElement("li");

            // Check if AI (assistant)
            const sr = art.querySelector("h6.sr-only");
            let isAI = false;
            if (sr && sr.textContent.includes("ChatGPT said:")) {
                isAI = true;
                li.textContent = "ChatGPT:";

                // Get the assistant message
                const assistantMsg = art.querySelector('div[data-message-author-role="assistant"]');
                const assistantText = assistantMsg?.textContent?.trim();
                if (assistantText) {
                    li.innerHTML = "<strong>ChatGPT: </strong>" + assistantText.slice(0, 100) + (assistantText.length > 100 ? "..." : "");
                }
            } else {
                // Get the user message
                const userMsg = art.querySelector('div[data-message-author-role="user"]');
                const userText = userMsg?.textContent?.trim();
                if (userText) {
                    const preview = userText.slice(0, 100);
                    li.innerHTML = "<strong>You: </strong>" + preview + (userText.length > 100 ? "..." : "");
                } else {
                    li.textContent = "";
                }
            }

            // On click: scroll to turn
            (function (turnElem) {
                li.addEventListener("click", function () {
                    turnElem.scrollIntoView({behavior: "smooth", block: "start"});
                });
            })(art);

            list.appendChild(li);
        }
    }

    // Attach observer to new container if needed
    function attachObserver() {
        const c = document.querySelector("main#main") || document.querySelector(".chat-container") || null;
        if (c !== chatContainer) {
            chatContainer = c;
            if (observer) {
                observer.disconnect();
                observer = null;
            }
            if (chatContainer) {
                observer = new MutationObserver(function () {
                    debounceBuildTOC();
                });
                observer.observe(chatContainer, {childList: true, subtree: true});
                buildTOC();
            }
        }
    }

    // Attempt to attach on load
    attachObserver();
    // Re-check every 2s in case container changes
    const reAttachInterval = setInterval(attachObserver, 2000);

    // Panel toggle
    handle.addEventListener("click", function () {
        panel.classList.toggle("visible");
    });
})();