deckhearth/README.md

# Deck Hearth

A modern trading card game collection manager built with Next.js and Neon Database.

## 🚀 Features

- **Card Management**: Track your MTG, Pokémon, and Lorcana cards
- **Collection Organization**: Create and manage card collections
- **Deck Building**: Build and share decks
- **Authentication**: Secure user accounts with JWT
- **Admin Panel**: Manage cards and users
- **Real-time Pricing**: Track card values

## 🛠️ Tech Stack

- **Frontend**: Next.js 16 (Pages router), React 18, JavaScript (TypeScript is a devDep only — see `AGENTS.md` Gotcha #9)
- **Backend**: Next.js API Routes
- **Database**: Neon PostgreSQL (serverless)
- **Authentication**: JWT with bcrypt (24-hour expiry; `lib/auth-secret.js` is the single source of truth for `JWT_SECRET`)
- **Rate limiting**: `@upstash/ratelimit` on `/api/auth/login` + `/api/auth/register` (5 attempts / 15 min per IP)
- **Testing**: Vitest (unit); Playwright queued
- **Styling**: Tailwind CSS
- **Deployment**: Vercel

## 📦 Installation

1. **Clone the repository**
   ```bash
   git clone <repository-url>
   cd tcg-vault
   ```

2. **Install dependencies**
   ```bash
   npm install
   ```

3. **Set up environment variables**
   ```bash
   cp .env.example .env.local
   ```
   
   Update `.env.local` with your Neon database URL and a real JWT secret:
   ```env
   POSTGRES_URL="postgresql://your-username:your-password@your-host/your-database"
   JWT_SECRET="<generate with: openssl rand -hex 32>"
   # Required for `npm run setup-db` — used once to hash the initial admin password.
   # Set in .env.local for local dev, or as a CI secret if you run setup from CI.
   ADMIN_INITIAL_PASSWORD="<generate with: openssl rand -base64 24>"
   # Optional — exercise the rate limiter locally. Without them, `lib/rate-limit.js`
   # warn-and-no-ops in dev. In production these are auto-provisioned by the
   # Vercel Upstash Marketplace integration.
   KV_REST_API_URL="https://<your-upstash-host>.upstash.io"
   KV_REST_API_TOKEN="<your-upstash-rest-token>"
   ```
   `JWT_SECRET` is **required** — `lib/auth-secret.js` throws at import time if it's unset.
   `ADMIN_INITIAL_PASSWORD` is **required** for `npm run setup-db` — the script exits with code 1 if it's unset.

4. **Set up the database**
   ```bash
   npm run setup-db
   ```

5. **Start development server**
   ```bash
   npm run dev
   ```

## 🗄️ Database Schema

The application uses the following tables:
- `users` - User accounts and authentication
- `cards` - Card information and metadata
- `user_cards` - User's card collections
- `collections` - Named card collections
- `collection_cards` - Cards in collections
- `decks` - Deck definitions
- `deck_cards` - Cards in decks

## 🔧 API Endpoints

### Authentication
- `POST /api/auth/register` - User registration
- `POST /api/auth/login` - User login

### Admin
- `GET /api/admin` - Admin panel data

### Health Check
- `GET /api/health` - Application health

> **Note:** Earlier revisions of this README also listed `GET /api/test-db` (and three other unauthenticated dev endpoints: `/api/simple`, `/api/test-auth`, `/api/setup-database`). All four were deleted in `fix-auth-bypass` Brief 3 (commit `fc0dd73`) and CI now blocks their reintroduction. Don't recreate them.

## 🚀 Deployment

This app is configured for deployment on Vercel:

1. **Connect your repository** to Vercel
2. **Set environment variables** in Vercel dashboard
3. **Deploy automatically** on push to main branch

## 📁 Project Structure

```
tcg-vault/
├── pages/                 # Next.js pages and API routes
│   ├── api/              # API endpoints
│   │   ├── auth/         # Authentication routes
│   │   └── admin/        # Admin routes
│   ├── _app.js           # App wrapper
│   └── index.js          # Home page
├── lib/                  # Utility libraries
│   └── database.js       # Database adapter
├── scripts/              # Database setup scripts
├── public/               # Static assets
└── .env.local           # Environment variables
```

## 🔐 First-time admin setup

`npm run setup-db` creates a single admin user the first time it runs. The
password is read from the `ADMIN_INITIAL_PASSWORD` environment variable; the
script exits with code 1 (and does not open a database connection) if the
variable is unset or empty.

- **Local dev:** set `ADMIN_INITIAL_PASSWORD` in `.env.local` before running
  `npm run setup-db`. Use `openssl rand -base64 24` (or any other strong
  source) to generate the value.
- **CI / Vercel:** set `ADMIN_INITIAL_PASSWORD` as a project secret if setup
  ever runs from CI. The env var is **only** read by the seed script; runtime
  auth uses the per-user password stored in the database.
- **Admin email:** the seed creates `admin@deckhearth.com`. Change the password
  immediately after first login via the app's profile settings.

> **Operators of envs that pre-date this change:** `npm run setup-db` is
> idempotent (`ON CONFLICT (email) DO NOTHING`) — re-running it with
> `ADMIN_INITIAL_PASSWORD` set will **not** rotate an existing admin row's
> password. If your environment was set up before this change and still has
> the prior weak default, rotate the password manually via the app
> after logging in, or wait for the queued `rotate-default-admin` follow-up
> convoy.

> **Operators of envs that pre-date the `pick-a-name` convoy (2026-05-24):**
> the admin row was renamed from `admin@tcgvault.com` to
> `admin@deckhearth.com`. Run
> `node scripts/migrations/2026-05-24-rename-admin-email.js` once after
> deploy to UPDATE any existing `@tcgvault.com` user rows (the admin row,
> plus alice/bob if `npm run create-test-users` was ever run). Re-running
> the migration after the first run is idempotent and prints "Nothing to
> migrate." Verify post-migration with
> `psql $POSTGRES_URL -c "SELECT email FROM users WHERE email LIKE '%@tcgvault.com'"`
> — expect zero rows.

## 🤝 Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Submit a pull request

## 📄 License

MIT License - see LICENSE file for details