A Go-based web application that bridges physical and digital media using NFC cards. Tap NFC cards on a reader to instantly play movies, TV shows, or music on your TV through Plex and Apple TV, managed via Home Assistant.

TapeDeck is feature-complete for personal use. Includes Plex authentication, multi-server media browsing, card mapping with real-time NFC pairing, Home Assistant integration with WebSocket, web-based setup wizard, Docker deployment, and hardware documentation.

TapeDeck recreates the nostalgic experience of physical media libraries for the streaming age. Kids (and adults!) can tap a physical card to play their favorite content without navigating complex streaming interfaces.

• Visual Media Browser: Browse Plex libraries with poster art and metadata
• Real-time NFC Pairing: Assign media to cards by tapping them during setup
• Zero YAML Editing: All mappings managed through web UI
• Smart TV Show Handling: Automatically plays next unwatched episode
• Home Assistant Integration: Seamless playback on Apple TV
• Multi-Server Support: Connect to multiple Plex servers simultaneously
• Multi-Device Support: Configure multiple Apple TVs for playback
• Web-Based Setup: First-time configuration wizard with auto-discovery

• Language: Go 1.25+
• Templating: Templ (type-safe Go templates)
• Frontend: Vanilla JavaScript with WebSocket for real-time NFC pairing
• Database: SQLite (pure Go driver, no CGO)
• WebSocket: Home Assistant integration for NFC events
• Deployment: Docker / Docker Compose (see Docker Deployment)

• Go 1.25 or higher
• Air (hot reload during development)
• Templ CLI (template generation)
• Plex Media Server
• Home Assistant with Apple TV integration

• ESPHome-compatible device (ESP32 or ESP8266)
• NFC reader (RC522 or PN532)
• NFC cards/tags (NTAG213/215/216 or MIFARE Classic)
• Apple TV with Plex app

See the Hardware Setup Guide for detailed instructions on wiring and configuring your NFC reader.

# Install Go tools
go install github.com/a-h/templ/cmd/templ@latest
go install github.com/air-verse/air@latest

cd TapeDeck
go mod download

# Optional: Create .env file to override defaults
# cp .env.example .env
# Edit .env to customize PORT, DATA_DIR, LOG_LEVEL, or DEV_MODE

# Start with hot reload
air

# Server will start on http://localhost:3001

On first run, the application will redirect you to the setup wizard at http://localhost:3001/setup:

1. Welcome: Introduction to the setup process
2. Plex Authentication: Log in with your Plex account to discover servers
3. Server Selection: Choose which Plex servers to connect to (supports multiple)
4. Home Assistant: Enter your HA URL and long-lived access token
5. Apple TV Selection: Choose which Apple TVs to use for playback (supports multiple)
6. Completion: Review configuration and finish setup

The wizard creates config.yml with your settings. You can re-run setup anytime by deleting this file.

# Test health check endpoint
curl http://localhost:3001/health

# Expected response:
# {"status":"ok"}

# Run tests
go test -v ./...

Air automatically watches for changes and rebuilds:

# Start development server
air

# Make changes to .go or .templ files
# Air will detect changes, rebuild, and restart automatically

# With proxy mode enabled (.air.toml), access via:
# http://localhost:3002 - Proxy with auto-refresh
# http://localhost:3001 - Direct app server

# Run all tests
go test ./...

# Run with verbose output
go test -v ./...

# Run specific package
go test ./internal/config

# Run with coverage
go test -cover ./...

# Format Go code
go fmt ./...

# Generate Templ files manually (Air does this automatically)
templ generate

tapedeck/
├── main.go                    # Entry point, HTTP server
├── main_test.go              # Tests for main package
├── go.mod                    # Go dependencies
├── .env.example              # Environment variable template
├── .air.toml                 # Hot reload configuration
├── Dockerfile                # Production build
├── docker-compose.yml        # Local Docker setup
│
├── internal/                 # Private application code
│   ├── config/              # Configuration loading
│   ├── db/                  # Database operations
│   ├── models/              # Data models
│   ├── auth/                # Plex OAuth, sessions
│   ├── plex/                # Plex API client
│   ├── ha/                  # Home Assistant WebSocket
│   ├── handlers/            # HTTP handlers
│   ├── middleware/          # Auth, logging middleware
│   └── pairing/             # NFC pairing logic
│
├── templates/               # Templ components
│   ├── layouts/            # Base layouts
│   ├── pages/              # Full pages
│   └── components/         # Reusable components
│
├── static/                  # Static assets
│   ├── css/                # Stylesheets
│   ├── js/                 # JavaScript
│   └── icons/              # Icons and images
│
├── migrations/              # SQL migration files
└── data/                    # SQLite database (gitignored)

Application settings can be configured via environment variables (.env file). All settings have sensible defaults and are optional:

Data Storage: All generated files are stored in DATA_DIR (defaults to current directory):

• Session Security: .session_secret - Session encryption key auto-generated on first run (gitignored, 0600 permissions)
• CSRF Protection: .csrf_key - CSRF token key auto-generated on first run (gitignored, 0600 permissions)
• Token Encryption: .encryption_key - AES-256-GCM key auto-generated on first run (gitignored, 0600 permissions)
• Database: tapedeck.db - SQLite database with encrypted tokens

Plex servers, Home Assistant URL, and Apple TVs are configured through the setup wizard, which creates a config.yml file:

version: 1
plex_servers:
  - id: "server-id-123"
    name: "Home Server"
    owner: "username"
    connections:
      - uri: "http://192.168.1.100:32400"
        local: true
home_assistant:
  url: "http://192.168.1.101:8123"
  # Note: Token is stored encrypted in database, not in this file
apple_tvs:
  - entity: "media_player.living_room_apple_tv"
    name: "Living Room"
    default: true
  - entity: "media_player.bedroom_apple_tv"
    name: "Bedroom"
    default: false

Token Storage: The Home Assistant long-lived access token is stored encrypted in the database (using AES-256-GCM), not in config.yml. This keeps the configuration file human-editable and prevents accidental exposure of credentials.

Multiple Server Support: You can connect to multiple Plex servers. When pairing cards, you'll select which server the media comes from.

Multiple Apple TV Support: Configure multiple Apple TVs and choose which one to use when pairing each card.

# Build for production
docker build -t tapedeck:latest .

# Build with docker-compose
docker-compose build

# Using docker-compose (recommended)
docker-compose up -d

# Or directly with docker
docker run -d \
  --name tapedeck \
  -p 3001:3001 \
  -v $(pwd)/data:/data \
  -e DATA_DIR=/data \
  -e PUID=1000 \
  -e PGID=1000 \
  --env-file .env \
  tapedeck:latest

The container supports PUID and PGID environment variables to match your host user/group (similar to LinuxServer.io images):

# Find your user ID and group ID
id $(whoami)

# Set PUID/PGID in docker-compose.yml or pass as environment variables
docker run -d \
  -e PUID=1027 \
  -e PGID=100 \
  ...

Default: PUID=1000, PGID=1000

For Synology NAS: Use your dockerlimited user's UID/GID (typically PUID=1027, PGID=100).

docker-compose logs -f tapedeck

• Unit tests: *_test.go next to implementation files
• Mock HTTP responses for external APIs (Plex, HA)

Core Functionality:

• Plex authentication and multi-server support
• Media browsing with library and search interfaces
• Card mapping with inline search autocomplete
• Real-time NFC pairing with live tag detection
• Home Assistant WebSocket integration
• Playback via Apple TV with multi-device support

Production Features:

• Web-based setup wizard with auto-discovery
• SQLite database with migrations
• Session management and authentication
• Prometheus metrics endpoint
• Docker deployment with multi-platform support
• Request logging and health checks

Documentation:

• Complete hardware setup guide (docs/hardware-setup.md)
• Home Assistant integration guide (docs/home-assistant-setup.md)
• ESPHome configuration examples for RC522 and PN532 readers

The following improvements are documented for future work and may be good candidates for community contributions:

• End-to-End Testing: Automated integration tests covering full user workflows
• User Documentation: Comprehensive user guide with screenshots and video tutorials
• Plex SDK Integration: Replace custom Plex API client with established SDK like plexgo to avoid XML parsing issues and stay current with API changes
• Media Player Filtering: Add ability to filter/distinguish between different types of media players (Apple TV, Chromecast, smart speakers) during setup wizard, possibly using entity ID patterns or Home Assistant device attributes
• Responsive Design: Mobile and tablet optimization - see docs/responsive-design.md
• Accessibility: WCAG compliance, keyboard navigation, screen reader support - see docs/accessibility.md

Contributions are welcome. See the Future Enhancements section for potential areas to work on.

When contributing:

• Follow existing code style and patterns
• Add tests for new functionality
• Update documentation as needed
• Open an issue first for major changes

MIT

Inspired by the blog post "How I Built an NFC Movie Library for My Kids" and similar projects in the home automation community.