Native Notepad for c.ai

Adds a minimal autosaving notepad to the right side panel, below the character name/PFP. One persistent note per character.

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 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         Native Notepad for c.ai
// @namespace    http://fakesite.net/minimalnotepad
// @version      0.1
// @description  Adds a minimal autosaving notepad to the right side panel, below the character name/PFP. One persistent note per character.
// @author       Mr005K
// @match        https://character.ai/chat/*
// @license      MIT
// @grant        GM_setValue
// @grant        GM_getValue
// ==/UserScript==

(function() {
    'use strict';

    let currentCharId = getCharId();

    function getCharId() {
        const path = window.location.pathname;
        if (path.startsWith('/chat/')) {
            return path.split('/chat/')[1].split('/')[0];
        }
        return '';
    }

    const observer = new MutationObserver(() => {
        const panel = document.querySelector('div[role="dialog"][data-state="open"]');
        if (!panel) return;

        const header = panel.querySelector('div.flex.gap-3');
        if (!header) return;

        const newCharId = getCharId();
        if (!newCharId) return;

        let noteDiv = panel.querySelector('#cai-notepad');
        if (!noteDiv) {
            noteDiv = document.createElement('div');
            noteDiv.id = 'cai-notepad';
            noteDiv.className = 'mt-4';

            const textarea = document.createElement('textarea');
            textarea.className = 'w-full h-32 p-2 bg-background border border-border-outline rounded-md text-foreground resize-vertical';
            textarea.value = GM_getValue('cai_note_' + newCharId, '');

            let saveTimeout;
            textarea.addEventListener('input', () => {
                clearTimeout(saveTimeout);
                saveTimeout = setTimeout(() => {
                    GM_setValue('cai_note_' + newCharId, textarea.value);
                }, 1000);
            });

            noteDiv.appendChild(textarea);
            header.after(noteDiv);
        } else if (newCharId !== currentCharId) {
            const textarea = noteDiv.querySelector('textarea');
            if (textarea) {
                textarea.value = GM_getValue('cai_note_' + newCharId, '');
            }
        }

        currentCharId = newCharId;
    });

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

    // To handle SPA navigation without mutations
    let lastPath = window.location.pathname;
    setInterval(() => {
        if (window.location.pathname !== lastPath) {
            lastPath = window.location.pathname;
            // Trigger a manual check
            observer.takeRecords(); // Clear queue
            observer.disconnect();
            observer.observe(document.body, { childList: true, subtree: true });
        }
    }, 500);

})();