Lukas
ff0d865b7c
Implemented a complete database layer for persistent storage of anime series, episodes, download queue, and user sessions using SQLAlchemy ORM. Features: - 4 SQLAlchemy models: AnimeSeries, Episode, DownloadQueueItem, UserSession - Automatic timestamp tracking via TimestampMixin - Foreign key relationships with cascade deletes - Async and sync database session support - FastAPI dependency injection integration - SQLite optimizations (WAL mode, foreign keys) - Enum types for status and priority fields Models: - AnimeSeries: Series metadata with one-to-many relationships - Episode: Individual episodes linked to series - DownloadQueueItem: Queue persistence with progress tracking - UserSession: JWT session storage with expiry and revocation Database Management: - Async engine creation with aiosqlite - Session factory with proper lifecycle - Connection pooling configuration - Automatic table creation on initialization Testing: - 19 comprehensive unit tests (all passing) - In-memory SQLite for test isolation - Relationship and constraint validation - Query operation testing Documentation: - Comprehensive database section in infrastructure.md - Database package README with examples - Implementation summary document - Usage guides and troubleshooting Dependencies: - Added: sqlalchemy>=2.0.35 (Python 3.13 compatible) - Added: alembic==1.13.0 (for future migrations) - Added: aiosqlite>=0.19.0 (async SQLite driver) Files: - src/server/database/__init__.py (package exports) - src/server/database/base.py (base classes and mixins) - src/server/database/models.py (ORM models, ~435 lines) - src/server/database/connection.py (connection management) - src/server/database/migrations.py (migration placeholder) - src/server/database/README.md (package documentation) - tests/unit/test_database_models.py (19 test cases) - DATABASE_IMPLEMENTATION_SUMMARY.md (implementation summary) Closes #9 Database Layer implementation task