"""
Comprehensive Testing Suite for Trax Application
Tests the TestSuiteRunner and related infrastructure
"""
import asyncio
import tempfile
from pathlib import Path
from typing import Dict, List, Any
import pytest
import time

from src.services.protocols import (
    TranscriptionServiceProtocol,
    MediaServiceProtocol, 
    YouTubeServiceProtocol,
    BatchProcessorProtocol
)


class TestComprehensiveTestingSuite:
    """Test the comprehensive testing suite infrastructure"""
    
    @pytest.mark.asyncio
    async def test_suite_runner_initialization(self):
        """Test that the test suite runner initializes correctly"""
        from tests.testing_suite import TestSuiteRunner
        
        runner = TestSuiteRunner()
        assert runner is not None
        assert hasattr(runner, 'run_all_tests')
        assert hasattr(runner, 'run_unit_tests')
        assert hasattr(runner, 'run_integration_tests')
        assert hasattr(runner, 'run_performance_tests')
    
    @pytest.mark.asyncio
    async def test_fixture_manager_initialization(self):
        """Test that the fixture manager creates required test data"""
        from tests.testing_suite import FixtureManager
        
        manager = FixtureManager()
        fixtures = await manager.create_test_fixtures()
        
        assert 'audio_files' in fixtures
        assert 'database' in fixtures
        assert 'mock_services' in fixtures
        assert len(fixtures['audio_files']) > 0
    
    @pytest.mark.asyncio
    async def test_mock_service_factory(self):
        """Test that mock services are created correctly"""
        from tests.testing_suite import MockServiceFactory
        
        factory = MockServiceFactory()
        youtube_service = factory.create_youtube_service()
        transcription_service = factory.create_transcription_service()
        
        # Test YouTube service mock
        metadata = await youtube_service.extract_metadata("https://youtube.com/watch?v=test")
        assert metadata['youtube_id'] == 'test'
        assert 'title' in metadata
        assert 'duration_seconds' in metadata
        
        # Test transcription service mock
        result = await transcription_service.transcribe(Path("test.wav"), 1)
        assert 'raw_content' in result
        assert 'text_content' in result
        assert result['pipeline_version'] == 'v1'
    
    @pytest.mark.asyncio
    async def test_performance_benchmark_runner(self):
        """Test that performance benchmarks execute correctly"""
        from tests.testing_suite import PerformanceBenchmarkRunner
        
        runner = PerformanceBenchmarkRunner()
        results = await runner.run_transcription_benchmark()
        
        assert 'duration_seconds' in results
        assert 'real_time_factor' in results
        assert 'memory_usage_mb' in results
        assert results['real_time_factor'] < 1.0  # Should be faster than real-time
    
    @pytest.mark.asyncio
    async def test_integration_test_runner(self):
        """Test that integration tests execute the full pipeline"""
        from tests.testing_suite import IntegrationTestRunner
        
        runner = IntegrationTestRunner()
        result = await runner.test_v1_pipeline()
        
        assert result['success'] is True
        assert 'transcript' in result
        assert 'processing_time' in result
        assert result['transcript']['pipeline_version'] == 'v1'
    
    @pytest.mark.asyncio
    async def test_cli_command_testing(self):
        """Test that CLI commands can be tested programmatically"""
        from tests.testing_suite import CLITestRunner
        
        runner = CLITestRunner()
        
        # Test transcribe command
        result = await runner.test_transcribe_command("test_audio.wav")
        assert result['exit_code'] == 0
        assert 'output' in result
        
        # Test batch command
        result = await runner.test_batch_command(["test1.wav", "test2.wav"])
        assert result['exit_code'] == 0
        assert 'processed_files' in result
    
    @pytest.mark.asyncio
    async def test_database_migration_testing(self):
        """Test that database migrations can be tested"""
        from tests.testing_suite import DatabaseMigrationTester
        
        tester = DatabaseMigrationTester()
        
        # Test migration up
        result = await tester.test_migration_up()
        assert result['success'] is True
        assert 'applied_migrations' in result
        
        # Test migration down
        result = await tester.test_migration_down()
        assert result['success'] is True
        assert 'reverted_migrations' in result
    
    @pytest.mark.asyncio
    async def test_coverage_reporting(self):
        """Test that test coverage is tracked and reported"""
        from tests.testing_suite import CoverageReporter
        
        reporter = CoverageReporter()
        report = await reporter.generate_coverage_report()
        
        assert 'total_coverage' in report
        assert 'module_coverage' in report
        assert report['total_coverage'] >= 80.0  # Minimum 80% coverage
        
        # Check specific modules have good coverage
        critical_modules = ['services', 'repositories', 'database']
        for module in critical_modules:
            if module in report['module_coverage']:
                assert report['module_coverage'][module] >= 80.0


class TestErrorHandlingAndEdgeCases:
    """Test error handling and edge cases in the testing suite"""
    
    @pytest.mark.asyncio
    async def test_missing_audio_file_handling(self):
        """Test how the suite handles missing audio files"""
        from tests.testing_suite import TestSuiteRunner
        
        runner = TestSuiteRunner()
        
        with pytest.raises(FileNotFoundError):
            await runner.test_with_missing_file("nonexistent.wav")
    
    @pytest.mark.asyncio
    async def test_corrupted_audio_file_handling(self):
        """Test how the suite handles corrupted audio files"""
        from tests.testing_suite import TestSuiteRunner
        
        runner = TestSuiteRunner()
        
        # Create a fake corrupted file
        with tempfile.NamedTemporaryFile(suffix='.wav', delete=False) as f:
            f.write(b'corrupted data')
            corrupted_file = Path(f.name)
        
        try:
            result = await runner.test_with_corrupted_file(corrupted_file)
            assert result['success'] is False
            assert 'error' in result
        finally:
            corrupted_file.unlink()
    
    @pytest.mark.asyncio
    async def test_database_connection_failure(self):
        """Test how the suite handles database connection failures"""
        from tests.testing_suite import DatabaseMigrationTester
        
        tester = DatabaseMigrationTester()
        
        # Test with invalid database URL
        result = await tester.test_with_invalid_db("invalid://connection")
        assert result['success'] is False
        assert 'connection_error' in result
    
    @pytest.mark.asyncio
    async def test_memory_limit_handling(self):
        """Test how the suite handles memory limit scenarios"""
        from tests.testing_suite import PerformanceBenchmarkRunner
        
        runner = PerformanceBenchmarkRunner()
        
        # Test with simulated memory pressure
        result = await runner.test_memory_limits()
        assert 'memory_usage_mb' in result
        assert result['memory_usage_mb'] < 2000  # Should stay under 2GB


class TestPerformanceMetrics:
    """Test performance metrics and benchmarking"""
    
    @pytest.mark.asyncio
    async def test_transcription_speed_benchmark(self):
        """Test transcription speed meets requirements"""
        from tests.testing_suite import PerformanceBenchmarkRunner
        
        runner = PerformanceBenchmarkRunner()
        
        # Test v1 requirements: 5-minute audio in <30 seconds
        result = await runner.benchmark_v1_transcription()
        assert result['audio_duration_seconds'] == 300  # 5 minutes
        assert result['processing_time_seconds'] < 30
        assert result['real_time_factor'] < 0.1  # Much faster than real-time
    
    @pytest.mark.asyncio
    async def test_memory_usage_benchmark(self):
        """Test memory usage stays within limits"""
        from tests.testing_suite import PerformanceBenchmarkRunner
        
        runner = PerformanceBenchmarkRunner()
        
        result = await runner.benchmark_memory_usage()
        assert result['peak_memory_mb'] < 2000  # v1 requirement: <2GB
        assert result['average_memory_mb'] < 1500
    
    @pytest.mark.asyncio
    async def test_batch_processing_performance(self):
        """Test batch processing performance"""
        from tests.testing_suite import PerformanceBenchmarkRunner
        
        runner = PerformanceBenchmarkRunner()
        
        # Test processing 10 files
        result = await runner.benchmark_batch_processing(10)
        assert result['total_files'] == 10
        assert result['successful_files'] == 10
        assert result['failed_files'] == 0
        assert result['total_time_seconds'] < 300  # Should process 10 files in <5 minutes
