#!/usr/bin/env python3
"""
Test script for Phase 1 implementation - Abstract base class and data models
"""
import sys
from pathlib import Path

# Add project root to path
project_root = Path(__file__).parent.parent
sys.path.append(str(project_root))

from backend.app.models.tts_models import (
    TTSParameters, SpeakerConfig, OutputConfig, TTSRequest, TTSResponse
)
from backend.app.services.base_tts_service import BaseTTSService, TTSError
from backend.app import config

def test_data_models():
    """Test TTS data models"""
    print("Testing TTS data models...")
    
    # Test TTSParameters
    params = TTSParameters(
        temperature=0.8,
        backend_params={"max_new_tokens": 512, "top_p": 0.9}
    )
    assert params.temperature == 0.8
    assert params.backend_params["max_new_tokens"] == 512
    print("✓ TTSParameters working correctly")
    
    # Test SpeakerConfig for chatterbox backend
    speaker_config_chatterbox = SpeakerConfig(
        id="test-speaker-1",
        name="Test Speaker",
        sample_path="/tmp/test_sample.wav",
        tts_backend="chatterbox"
    )
    print("✓ SpeakerConfig for chatterbox backend working")
    
    # Test SpeakerConfig validation for higgs backend (should raise error without reference_text)
    try:
        speaker_config_higgs_invalid = SpeakerConfig(
            id="test-speaker-2",
            name="Invalid Higgs Speaker",
            sample_path="/tmp/test_sample.wav",
            tts_backend="higgs"
        )
        speaker_config_higgs_invalid.validate()
        assert False, "Should have raised ValueError for missing reference_text"
    except ValueError as e:
        print("✓ SpeakerConfig validation correctly catches missing reference_text for higgs")
    
    # Test valid SpeakerConfig for higgs backend
    speaker_config_higgs_valid = SpeakerConfig(
        id="test-speaker-3",
        name="Valid Higgs Speaker",
        sample_path="/tmp/test_sample.wav",
        reference_text="Hello, this is a test.",
        tts_backend="higgs"
    )
    speaker_config_higgs_valid.validate()  # Should not raise
    print("✓ SpeakerConfig for higgs backend with reference_text working")
    
    # Test OutputConfig
    output_config = OutputConfig(
        filename_base="test_output",
        output_dir=Path("/tmp"),
        format="wav"
    )
    assert output_config.filename_base == "test_output"
    print("✓ OutputConfig working correctly")
    
    # Test TTSRequest
    request = TTSRequest(
        text="Hello world, this is a test.",
        speaker_config=speaker_config_chatterbox,
        parameters=params,
        output_config=output_config
    )
    assert request.text == "Hello world, this is a test."
    assert request.speaker_config.name == "Test Speaker"
    print("✓ TTSRequest working correctly")
    
    # Test TTSResponse
    response = TTSResponse(
        output_path=Path("/tmp/output.wav"),
        generated_text="Hello world, this is a test.",
        audio_duration=3.5,
        sampling_rate=22050,
        backend_used="chatterbox"
    )
    assert response.audio_duration == 3.5
    assert response.backend_used == "chatterbox"
    print("✓ TTSResponse working correctly")

def test_base_service():
    """Test abstract base service class"""
    print("\nTesting abstract base service...")
    
    # Create a mock implementation
    class MockTTSService(BaseTTSService):
        async def load_model(self):
            self.model = "mock_model_loaded"
        
        async def unload_model(self):
            self.model = None
        
        async def generate_speech(self, request):
            return TTSResponse(
                output_path=Path("/tmp/mock_output.wav"),
                backend_used=self.backend_name
            )
        
        def validate_speaker_config(self, config):
            return True
    
    # Test device resolution
    mock_service = MockTTSService(device="auto")
    assert mock_service.device in ["cuda", "mps", "cpu"]
    print(f"✓ Device auto-resolution: {mock_service.device}")
    
    # Test backend name extraction
    assert mock_service.backend_name == "mock"
    print("✓ Backend name extraction working")
    
    # Test model loading state
    assert not mock_service.is_loaded()
    print("✓ Initial model state check")

def test_configuration():
    """Test configuration values"""
    print("\nTesting configuration...")
    
    assert hasattr(config, 'HIGGS_MODEL_PATH')
    assert hasattr(config, 'HIGGS_AUDIO_TOKENIZER_PATH')
    assert hasattr(config, 'DEFAULT_TTS_BACKEND')
    assert hasattr(config, 'TTS_BACKEND_DEFAULTS')
    
    print(f"✓ Default TTS backend: {config.DEFAULT_TTS_BACKEND}")
    print(f"✓ Higgs model path: {config.HIGGS_MODEL_PATH}")
    
    # Test backend defaults
    assert "chatterbox" in config.TTS_BACKEND_DEFAULTS
    assert "higgs" in config.TTS_BACKEND_DEFAULTS
    assert "temperature" in config.TTS_BACKEND_DEFAULTS["chatterbox"]
    assert "max_new_tokens" in config.TTS_BACKEND_DEFAULTS["higgs"]
    
    print("✓ TTS backend defaults configured correctly")

def test_error_handling():
    """Test TTS error classes"""
    print("\nTesting error handling...")
    
    # Test TTSError
    try:
        raise TTSError("Test error", "test_backend", "ERROR_001")
    except TTSError as e:
        assert e.backend == "test_backend"
        assert e.error_code == "ERROR_001"
        print("✓ TTSError working correctly")
    
    # Test BackendSpecificError inheritance
    from backend.app.services.base_tts_service import BackendSpecificError
    try:
        raise BackendSpecificError("Backend specific error", "higgs")
    except TTSError as e:  # Should catch as base class
        assert e.backend == "higgs"
        print("✓ BackendSpecificError inheritance working correctly")

def main():
    """Run all tests"""
    print("=== Phase 1 Implementation Tests ===\n")
    
    try:
        test_data_models()
        test_base_service()
        test_configuration()
        test_error_handling()
        
        print("\n=== All Phase 1 tests passed! ✓ ===")
        print("\nPhase 1 components ready:")
        print("- TTS data models (TTSRequest, TTSResponse, etc.)")
        print("- Abstract BaseTTSService class")
        print("- Configuration system with Higgs support")
        print("- Error handling framework")
        print("\nReady to proceed to Phase 2: Service Implementation")
        
    except Exception as e:
        print(f"\n❌ Test failed: {e}")
        import traceback
        traceback.print_exc()
        return 1
    
    return 0

if __name__ == "__main__":
    exit(main())