Renderex

Modern note-taking where markdown meets AI.

overview

Firebase handles the entire backend — auth, database, protected routes, user-scoped data — all without running a server. Google Gemini is wired in for context-aware content generation.

highlights

01Serverless backend on Firebase: auth, database, protected routes, user-scoped data
02Every Server Action checks the session with requireUserId; Firebase Admin initialises once per server
03Google Gemini for context-aware content generation
04Export to PDF, DOCX, Markdown or plain text, full tag system, dark/light theme

how it fits together

Next.js + Redux
→
Server Actions
→
Firebase
→
Gemini API

key files

src/lib/auth/requireUserId.ts

import { cookies } from "next/headers";
import { AUTH_ERRORS } from "../../../constants/authErrors";

/**
 * Validates if the user is currently authenticated by checking the session cookie.
 * 
 * @throws {Error} If the 'userId' cookie is missing.
 * @returns {Promise<string>} The authenticated user's ID.
 */
export async function requireUserId() {
  const cookieStore = await cookies();
  const userIdCk = cookieStore.get("userId")?.value;

  if (!userIdCk) {
    throw new Error(AUTH_ERRORS.NOT_AUTHENTICATED);
  }
  return userIdCk;
}

Every notes, tags and user Server Action starts here — no session cookie, no data.

Next.js
TypeScript
Firebase
Redux
Gemini AI
Framer Motion
Tailwind

Repository ↗