#!/usr/bin/env python3
"""
Test script to verify the application components work without launching GUI.
"""

import sys
import os

# Add the project root to Python path
sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))

def test_core_modules():
    """Test core application modules"""
    print("Testing core modules...")
    
    try:
        from core.midi_channel_manager import MIDIChannelManager
        channel_manager = MIDIChannelManager()
        print("  - MIDI Channel Manager: OK")
        
        from core.volume_pattern_engine import VolumePatternEngine
        volume_engine = VolumePatternEngine()
        print("  - Volume Pattern Engine: OK")
        
        from core.synth_router import SynthRouter
        synth_router = SynthRouter(channel_manager)
        print("  - Synth Router: OK")
        
        from simulator.simulator_engine import SimulatorEngine
        simulator = SimulatorEngine()
        print("  - Simulator Engine: OK")
        
        from core.output_manager import OutputManager
        output_manager = OutputManager(simulator)
        print("  - Output Manager: OK")
        
        from core.arpeggiator_engine import ArpeggiatorEngine
        arpeggiator = ArpeggiatorEngine(channel_manager, synth_router, volume_engine, output_manager)
        print("  - Arpeggiator Engine: OK")
        
        return True, (channel_manager, volume_engine, synth_router, simulator, output_manager, arpeggiator)
        
    except Exception as e:
        print(f"  - Error: {e}")
        import traceback
        traceback.print_exc()
        return False, None

def test_functionality(components):
    """Test basic functionality"""
    print("\nTesting functionality...")
    
    channel_manager, volume_engine, synth_router, simulator, output_manager, arpeggiator = components
    
    try:
        # Test channel manager
        channel_manager.set_active_synth_count(4)
        channel_manager.set_channel_instrument(1, 10)  # Drum kit
        print("  - Channel management: OK")
        
        # Test volume patterns
        volume_engine.set_pattern("swell")
        volume_engine.set_pattern_speed(1.5)
        volumes = volume_engine.get_all_channel_volumes(4)
        print(f"  - Volume patterns: OK (generated {len(volumes)} channel volumes)")
        
        # Test arpeggiator
        arpeggiator.set_root_note(60)  # Middle C
        arpeggiator.set_scale("major")
        arpeggiator.set_pattern_type("up")
        arpeggiator.set_tempo(120)
        print("  - Arpeggiator settings: OK")
        
        # Test note handling (without starting playback)
        arpeggiator.note_on(60)  # C
        arpeggiator.note_on(64)  # E  
        arpeggiator.note_on(67)  # G
        print(f"  - Note input: OK (holding {len(arpeggiator.held_notes)} notes)")
        
        # Test simulator
        simulator.play_note(1, 60, 80)
        simulator.stop_note(1, 60)
        print("  - Simulator playback: OK")
        
        return True
        
    except Exception as e:
        print(f"  - Functionality error: {e}")
        import traceback
        traceback.print_exc()
        return False

def test_maschine_integration():
    """Test Maschine integration (without actual hardware)"""
    print("\nTesting Maschine integration...")
    
    try:
        from maschine.maschine_interface import MaschineInterface
        from maschine.maschine_controller import MaschineController
        
        # Note: This won't actually connect without hardware
        maschine_interface = MaschineInterface()
        print("  - Maschine Interface: OK")
        
        # Test finding devices (will return empty list without hardware)
        inputs, outputs = maschine_interface.find_maschine_devices()
        print(f"  - Device detection: OK (found {len(inputs)} inputs, {len(outputs)} outputs)")
        
        return True
        
    except Exception as e:
        print(f"  - Maschine integration error: {e}")
        return False

def main():
    """Run all tests"""
    print("MIDI Arpeggiator - Application Test")
    print("=" * 40)
    
    # Test core modules
    success, components = test_core_modules()
    if not success:
        print("\nCore module test failed!")
        return 1
    
    # Test functionality  
    if not test_functionality(components):
        print("\nFunctionality test failed!")
        return 1
        
    # Test Maschine integration
    test_maschine_integration()
    
    print("\n" + "=" * 40)
    print("All tests completed successfully!")
    print("\nYour application is ready to run!")
    print("Execute: python run.py")
    
    return 0

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