# 📚 Bookmann

A modern self-hosted media library system built with Go, PostgreSQL, HTMX, and Tailwind CSS featuring multiple library support, beautiful dark themes, and comprehensive media management.

## ✨ Features

### 🏗 Multi-Library System
- **Multiple Media Types**: Support for Ebooks, Comics, and Manga with modular architecture
- **Per-Library Folders**: Each library can have multiple scanning folders for flexible organization
- **Library Visibility Control**: Admins can control which libraries are visible to each user
- **Type-Specific File Extensions**: 
  - **Ebooks**: `.epub`, `.pdf`, `.mobi`, `.azw`, `.azw3`, `.txt`, `.rtf`, `.doc`, `.docx`, `.lit`, `.fb2`, `.pdb`
  - **Comics**: `.cbz`, `.cbr`, `.cb7`, `.cbt`, `.pdf`
  - **Manga**: `.cbz`, `.cbr`, `.png`, `.jpg`, `.jpeg`, `.gif`, `.bmp`, `.webp`
- **Easy Extension**: Designed to add new media types in the future

### 🔒 Authentication & Security
- **Multi-User Support**: Complete user registration and authentication system
- **JWT-Based Sessions**: Secure token-based authentication with 1-hour expiration and refresh token support
- **Role-Based Access**: Admin and user roles with granular permission control
- **Password Security**: bcrypt hashing with complex password requirements:
  - Minimum 8 characters
  - At least one uppercase letter (A-Z)
  - At least one lowercase letter (a-z)
  - At least one number (0-9)
  - At least one special character (!@#$%^&*()_+-=[]{}|;':\",./<>?)
- **Account Lockout**: Automatic account lockout after 5 failed login attempts (15-minute lockout period)
- **Rate Limiting**: Built-in rate limiting on auth endpoints (10 requests/minute) to prevent brute force attacks
- **Refresh Tokens**: Secure refresh token mechanism (7-day expiration) for seamless token renewal
- **Input Validation**: Comprehensive validation including username whitespace checks, email format validation
- **Pagination Protection**: Maximum pagination limits (1000 items) to prevent DoS attacks
- **Path Validation**: Library folder paths are validated for existence and accessibility
- **Case-Insensitive Roles**: Role values automatically normalized to lowercase
- **Database Transactions**: Multi-step database operations use transaction support for data consistency
- **Standardized Error Responses**: Consistent error format across all API endpoints

### 🎨 Beautiful UI
- **11 Dark Themes**: Tokyo Night, Dracula, Nord, Solarized Dark, Monokai, One Dark Pro, Material Dark, Catppuccin variants
- **Theme Persistence**: User theme preferences saved to database
- **Mobile-First Design**: Fully responsive interface for all devices
- **HTMX Integration**: Dynamic interactions without page reloads

### 📱 Media Management
- **Universal Media Support**: Single system for all media types with unified interface
- **Rich Metadata**: Automatic extraction of title, author, series, publisher, ISBN, tags
- **Advanced Rating**: 5-star system with half-star precision (1-10 scale)
- **Reading Progress**: User-specific progress tracking with current page and total pages
- **Notes & Highlights**: Personal annotations and text highlighting with color customization
- **Highlight Notes**: Link highlights to detailed notes for comprehensive annotations
- **Library Statistics**: Media count and usage statistics per library

## 🚀 Quick Start

### Prerequisites
- Docker and Docker Compose
- PostgreSQL database (handled by Docker)

### Environment Setup
1. **Create .env file**:
```bash
cp .env.example .env
```

2. **Edit .env** with your secure values:
```bash
JWT_SECRET="your-secure-jwt-secret-key-here"
DBPASS="your-secure-database-password-here"
```

### Running the Application
```bash
# Option 1: Using .env file
docker-compose up --build

# Option 2: Direct environment variables
export JWT_SECRET="your-secure-jwt-secret-key-here"
export DBPASS="your-secure-database-password-here"
docker-compose up --build
```

Access the application at: **http://localhost:8765**

## 👤 User Management

### Role System
- **Admin Users**: Can create/manage libraries, add/delete media items, manage users
- **Regular Users**: Can view permitted libraries, rate items, track reading progress

### First Admin Setup
The first user who registers automatically becomes an admin. For additional admins:

```sql
-- Connect to database
docker exec -it bookmann_db psql -U postgres -d bookmann

-- Promote user to admin
UPDATE users SET role = 'admin' WHERE email = 'user@example.com';
```

## 🏛 Library Management

### Creating Libraries
1. **Admin Access**: Only administrators can create libraries
2. **Library Types**: Choose from Ebooks, Comics, or Manga
3. **Multi-Folder Support**: Add multiple scanning folders per library
4. **Folder Organization**: Organize your media collection across multiple paths

### Library Visibility Control
- **Admin Dashboard**: Complete interface for managing library access
- **User-Specific Control**: Admins can show/hide libraries per user
- **Personal Preferences**: Admins can also hide libraries from their own view
- **Simple Toggles**: Checkbox-based interface for easy management

### API Endpoints

#### Notes & Highlights (All Authenticated Users)
```bash
# Media Notes
GET /api/media-items/{id}/notes              # Get user's notes for media
POST /api/media-items/{id}/notes             # Create new note
GET /api/media-items/{id}/notes/{noteId}   # Get specific note
PUT /api/media-items/{id}/notes/{noteId}    # Update note
DELETE /api/media-items/{id}/notes/{noteId} # Delete note

# Media Highlights  
GET /api/media-items/{id}/highlights                   # Get user's highlights for media
POST /api/media-items/{id}/highlights                  # Create new highlight
GET /api/media-items/{id}/highlights/{highlightId}      # Get specific highlight
PUT /api/media-items/{id}/highlights/{highlightId}       # Update highlight
DELETE /api/media-items/{id}/highlights/{highlightId}   # Delete highlight

# Ebook Compatibility (Backward Compatible)
GET /api/ebooks/{id}/notes              # Get user's notes for ebook
POST /api/ebooks/{id}/notes             # Create new ebook note
PUT /api/ebooks/{id}/notes/{noteId}    # Update ebook note
DELETE /api/ebooks/{id}/notes/{noteId} # Delete ebook note

GET /api/ebooks/{id}/highlights                   # Get user's highlights for ebook
POST /api/ebooks/{id}/highlights                  # Create new ebook highlight
PUT /api/ebooks/{id}/highlights/{highlightId}       # Update ebook highlight
DELETE /api/ebooks/{id}/highlights/{highlightId}   # Delete ebook highlight
```

#### Library Management (Admin Only)
```bash
# Create new library
POST /api/libraries
{
  "name": "My Comic Collection",
  "description": "Digital comics and graphic novels",
  "type": "comics"
}

# List all libraries  
GET /api/libraries

# Add folder to library
POST /api/libraries/{library_id}/folders
{
  "folder_path": "/path/to/comics"
}

# Set library visibility for user
POST /api/libraries/visibility
{
  "library_id": "library-uuid",
  "is_visible": true
}
```

#### User Access
```bash
# Get user's visible libraries
GET /api/libraries/visible

# Browse media in library
GET /api/media-items?library_id={library_id}&limit=20&offset=0

# Media Progress & Ratings
GET /api/media-items/{id}/progress     # Get reading progress
PUT /api/media-items/{id}/progress     # Update reading progress
GET /api/media-items/{id}/rating       # Get user rating
POST /api/media-items/{id}/rating      # Create/update rating
PUT /api/media-items/{id}/rating       # Update rating
DELETE /api/media-items/{id}/rating   # Delete rating

# Token Management
POST /api/auth/refresh                 # Refresh access token
POST /api/auth/logout                  # Logout (revokes refresh token)
```

## 📖 Media Support

### Ebooks
- **Formats**: EPUB (full metadata), PDF, MOBI, AZW, TXT, DOC, FB2
- **Metadata**: Automatic extraction from EPUB files with Calibre support
- **Reading**: Built-in web reader for EPUB files

### Comics  
- **Formats**: CBZ, CBR, CB7, CBT, PDF
- **Structure**: Archive-based organization with chapter support
- **Viewing**: Image extraction and web-based comic reader

### Manga
- **Formats**: CBZ, CBR (archives), PNG, JPG (image folders)
- **Structure**: Archive support with folder-based image organization
- **Viewing**: Chapter-by-chapter viewing with page navigation

## 🎨 Development

### Local Development
```bash
# Backend development
go mod tidy
go run cmd/server/main.go

# Frontend development
npm run dev
# Templates automatically recompile on changes
```

### Environment
- **Backend**: Go 1.25+ with pgx v5 for database operations
- **Frontend**: Tailwind CSS with HTMX for dynamic interactions  
- **Database**: PostgreSQL 15+ with pgx v5 driver
- **Authentication**: JWT tokens with bcrypt password hashing

## 🐳 Deployment

### Docker Configuration
```yaml
# docker-compose.yml
services:
  bookmann:
    build: .
    ports:
      - "8765:8765"
    environment:
      - JWT_SECRET=${JWT_SECRET}
      - DBHOST=db
    depends_on:
      - db
```

### Database Schema
- **Multi-Library Architecture**: Libraries, library types, folders, visibility tables
- **Annotations System**: Notes, highlights with position tracking and color customization
- **Backward Compatibility**: Views maintain existing API contracts for ebooks
- **Type Safety**: pgx v5 with proper error handling
- **Migration Ready**: Schema designed for easy future extensions

## 🧪 API Documentation

### Bruno Testing Collection
Complete API testing collection in `bruno/` directory:

```
bruno/
├── user/           # Authentication & profile endpoints
├── admin/          # Admin-only operations  
├── library/         # Library management
├── media-items/    # Media content browsing
├── notes/          # Notes API testing
├── highlights/     # Highlights API testing
└── collection.bru  # Main dashboard
```

### Authentication Flow
1. **Register**: `POST /api/auth/register` → JWT token
2. **Login**: `POST /api/auth/login` → JWT token  
3. **Protected Routes**: Use `Authorization: Bearer {token}` header

### Error Handling
All API endpoints return standardized error responses:
```json
{
  "error": "Error message",
  "message": "Detailed error information (if available)",
  "code": "Error code (if applicable)"
}
```

HTTP Status Codes:
- **400**: Bad request (validation errors)
- **401**: Unauthorized (invalid/missing token)
- **403**: Forbidden (insufficient permissions)
- **404**: Resource not found
- **429**: Too many requests (rate limit exceeded)
- **500**: Internal server error

## 🛡 Security Features

### Authentication & Authorization
- **JWT Tokens**: 
  - Short-lived access tokens (1-hour expiration)
  - Refresh tokens (7-day expiration) for seamless session renewal
  - Secure token storage and transmission
- **Password Security**:
  - bcrypt hashing with cost factor 12
  - Complex password requirements enforced
  - Password validation on registration and updates
- **Account Protection**:
  - Automatic lockout after 5 failed login attempts
  - 15-minute lockout period with countdown
  - IP-based and username-based attempt tracking
- **Rate Limiting**: 10 requests per minute on authentication endpoints
- **Input Validation**: Comprehensive server-side validation for all inputs
- **CSRF Protection**: Built-in with HTMX
- **Role-Based Access Control**: Admin and user roles enforced on all endpoints

### Authorization
- **Role-Based Access**: Admin vs user permissions
- **Library Visibility**: Per-user library access control
- **Admin Middleware**: Protected routes for admin operations
- **Content Security**: XSS protection and secure headers

### Database Security
- **Parameterized Queries**: SQL injection prevention with pgx v5
- **Connection Pooling**: Efficient database connection management
- **Transaction Support**: Multi-step operations wrapped in transactions
- **Environment Variables**: Secure secret management
- **Row-Level Security**: User data isolation
- **Secure Refresh Token Storage**: Encrypted token storage in database
- **Automatic Token Cleanup**: Expired tokens cleaned up periodically

## 🔧 Configuration

### Environment Variables
```bash
# Required
JWT_SECRET=           # JWT signing secret (64-byte random string)
DBHOST=db            # PostgreSQL database host

# Optional  
SERVER_PORT=8765      # Application port
NODE_ENV=development   # Environment mode
```

### Database Configuration
```sql
-- Library types are automatically seeded
INSERT INTO library_types (name, description, allowed_extensions) VALUES
('ebooks', 'Ebook files including EPUB, PDF, MOBI, etc.', 
 ARRAY['.epub', '.pdf', '.mobi', '.azw', '.azw3', '.txt', '.rtf', '.doc', '.docx', '.lit', '.fb2', '.pdb']),
('comics', 'Comic book archives and image formats', 
 ARRAY['.cbz', '.cbr', '.cb7', '.cbt', '.pdf']),
('manga', 'Manga files including archives and image folders', 
 ARRAY['.cbz', '.cbr', '.png', '.jpg', '.jpeg', '.gif', '.bmp', '.webp']);
```

## 🧪 Testing

### API Testing
```bash
# Install Bruno
npm install -g @usebruno/cli

# Run tests
bruno run
```

### Unit Tests
```bash
go test ./...
```

## 📊 Architecture

### Backend
```
cmd/server/main.go              # Application entry point
├── internal/
│   ├── config/             # Configuration management
│   ├── database/           # Database operations (SQLC generated)
│   │   ├── queries/     # SQL queries
│   │   └── models.go    # Generated models
│   ├── handlers/           # HTTP handlers
│   │   ├── auth.go     # Authentication & users
│   │   ├── library.go  # Library management
│   │   └── ebook.go   # Media operations
│   └── services/          # Business logic
│       └── library_service.go  # Library service
templates/                   # HTML templates with HTMX
```

### Database
```sql
libraries              # Library definitions
library_types          # Media type definitions (ebooks, comics, manga)
library_folders        # Folders per library
library_visibility     # User library access control
media_items           # All media content (replaces ebooks table)
media_ratings         # User ratings for media items
media_notes           # User notes on media items
media_highlights      # User highlights with optional note links
reading_progress       # User reading progress
users                 # User accounts and profiles

# Backward Compatibility Views
ebook_notes           # Notes view for ebook API compatibility
ebook_highlights      # Highlights view for ebook API compatibility
```

## 🎯 Future Roadmap

### Media Type Extensions
- **Audiobooks**: Audio file support with chapter tracking
- **Podcasts**: RSS feed integration and automatic downloading
- **Video**: Movie/TV series management with metadata
- **Music**: Album and track management with artwork

### Advanced Features
- **Mobile App**: React Native mobile application
- **API v2**: GraphQL API for efficient data fetching
- **Webhooks**: External service integrations
- **Analytics**: Usage statistics and reporting
- **Backup/Restore**: Library backup and migration tools

## 📝 Contributing

### Development Guidelines
- Follow Go best practices and effective Go
- Use pgx v5 for all database operations
- Implement proper error handling with pgx.ErrNoRows
- Write comprehensive tests for new features
- Update documentation for API changes

### Code Style
- Follow existing code formatting
- Use meaningful variable and function names
- Add comments for complex business logic
- Ensure type safety with proper error handling

## 📄 License

GPL-3.0 - See [LICENSE](LICENSE) file for details.

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**Built with ❤️ using Go, PostgreSQL, HTMX, and Tailwind CSS**