"""Tests for ApiKey model (T08).

T08: Creare model ApiKey (SQLAlchemy)
"""
import pytest
from datetime import datetime
from sqlalchemy import create_engine, inspect
from sqlalchemy.orm import sessionmaker
from sqlalchemy.exc import IntegrityError

# Import models to register them with Base
from openrouter_monitor.models import User, ApiKey, UsageStats, ApiToken
from openrouter_monitor.database import Base


@pytest.mark.unit
class TestApiKeyModelBasics:
    """Test ApiKey model basic attributes and creation."""
    
    def test_api_key_model_exists(self):
        """Test that ApiKey model can be imported."""
        # Assert
        assert ApiKey is not None
        assert hasattr(ApiKey, '__tablename__')
        assert ApiKey.__tablename__ == 'api_keys'
    
    def test_api_key_has_required_fields(self):
        """Test that ApiKey model has all required fields."""
        # Assert
        assert hasattr(ApiKey, 'id')
        assert hasattr(ApiKey, 'user_id')
        assert hasattr(ApiKey, 'name')
        assert hasattr(ApiKey, 'key_encrypted')
        assert hasattr(ApiKey, 'is_active')
        assert hasattr(ApiKey, 'created_at')
        assert hasattr(ApiKey, 'last_used_at')
    
    def test_api_key_create_with_valid_data(self, tmp_path):
        """Test creating ApiKey with valid data."""
        # Arrange
        engine = create_engine(f'sqlite:///{tmp_path}/test_api_key.db')
        Session = sessionmaker(bind=engine)
        Base.metadata.create_all(bind=engine)
        session = Session()
        
        # Act
        api_key = ApiKey(
            user_id=1,
            name="Production Key",
            key_encrypted="encrypted_value_here"
        )
        session.add(api_key)
        session.flush()
        
        # Assert
        assert api_key.name == "Production Key"
        assert api_key.key_encrypted == "encrypted_value_here"
        assert api_key.is_active is True
        assert api_key.created_at is not None
        assert api_key.last_used_at is None
        
        session.close()


@pytest.mark.unit
class TestApiKeyConstraints:
    """Test ApiKey model constraints."""
    
    def test_api_key_user_id_index_exists(self):
        """Test that user_id has an index."""
        # Act
        inspector = inspect(ApiKey.__table__)
        indexes = inspector.indexes
        
        # Assert
        index_names = [idx.name for idx in indexes]
        assert any('user' in name for name in index_names)
    
    def test_api_key_is_active_index_exists(self):
        """Test that is_active has an index."""
        # Act
        inspector = inspect(ApiKey.__table__)
        indexes = inspector.indexes
        
        # Assert
        index_names = [idx.name for idx in indexes]
        assert any('active' in name for name in index_names)
    
    def test_api_key_foreign_key_constraint(self):
        """Test that user_id has foreign key constraint."""
        # Assert
        assert hasattr(ApiKey, 'user_id')


@pytest.mark.unit
class TestApiKeyRelationships:
    """Test ApiKey model relationships."""
    
    def test_api_key_has_user_relationship(self):
        """Test that ApiKey has user relationship."""
        # Assert
        assert hasattr(ApiKey, 'user')
    
    def test_api_key_has_usage_stats_relationship(self):
        """Test that ApiKey has usage_stats relationship."""
        # Assert
        assert hasattr(ApiKey, 'usage_stats')
    
    def test_usage_stats_cascade_delete(self):
        """Test that usage_stats have cascade delete."""
        # Arrange
        from sqlalchemy.orm import RelationshipProperty
        
        # Act
        usage_stats_rel = getattr(ApiKey.usage_stats, 'property', None)
        
        # Assert
        if usage_stats_rel:
            assert 'delete' in str(usage_stats_rel.cascade).lower() or 'all' in str(usage_stats_rel.cascade).lower()


@pytest.mark.integration
class TestApiKeyDatabaseIntegration:
    """Integration tests for ApiKey model with database."""
    
    def test_api_key_persist_and_retrieve(self, tmp_path):
        """Test persisting and retrieving API key from database."""
        # Arrange
        engine = create_engine(f'sqlite:///{tmp_path}/test_api_key_persist.db')
        Session = sessionmaker(bind=engine)
        Base.metadata.create_all(bind=engine)
        session = Session()
        
        # Act
        api_key = ApiKey(
            user_id=1,
            name="Test Key",
            key_encrypted="encrypted_abc123"
        )
        session.add(api_key)
        session.commit()
        
        # Retrieve
        retrieved = session.query(ApiKey).filter_by(name="Test Key").first()
        
        # Assert
        assert retrieved is not None
        assert retrieved.key_encrypted == "encrypted_abc123"
        assert retrieved.id is not None
        
        session.close()
    
    def test_api_key_last_used_at_can_be_set(self, tmp_path):
        """Test that last_used_at can be set."""
        # Arrange
        engine = create_engine(f'sqlite:///{tmp_path}/test_last_used.db')
        Session = sessionmaker(bind=engine)
        Base.metadata.create_all(bind=engine)
        session = Session()
        
        now = datetime.utcnow()
        
        # Act
        api_key = ApiKey(
            user_id=1,
            name="Test Key",
            key_encrypted="encrypted_abc123",
            last_used_at=now
        )
        session.add(api_key)
        session.commit()
        
        # Retrieve
        retrieved = session.query(ApiKey).first()
        
        # Assert
        assert retrieved.last_used_at is not None
        
        session.close()