"""
Verify MCP Legacy Files installation and basic functionality.
"""

import asyncio
import tempfile
import os
from pathlib import Path

def create_test_files():
    """Create test files for verification."""
    test_files = {}
    
    # Create mock dBASE file
    with tempfile.NamedTemporaryFile(suffix='.dbf', delete=False) as f:
        # dBASE III header
        header = bytearray(32)
        header[0] = 0x03  # dBASE III version
        header[1:4] = [24, 1, 1]  # Date: 2024-01-01  
        header[4:8] = (5).to_bytes(4, 'little')  # 5 records
        header[8:10] = (97).to_bytes(2, 'little')  # Header length (32 + 2*32 + 1)
        header[10:12] = (20).to_bytes(2, 'little')  # Record length
        
        # Field descriptors for 2 fields (32 bytes each)
        field1 = bytearray(32)
        field1[0:8] = b'NAME    '  # Field name
        field1[11] = ord('C')      # Character type
        field1[16] = 15            # Field length
        
        field2 = bytearray(32)
        field2[0:8] = b'AGE     '  # Field name  
        field2[11] = ord('N')      # Numeric type
        field2[16] = 3             # Field length
        
        # Header terminator
        terminator = b'\x0D'
        
        # Sample records (20 bytes each)
        record1 = b' John Doe        25 '
        record2 = b' Jane Smith      30 '
        record3 = b' Bob Johnson     45 '
        record4 = b' Alice Brown     28 '
        record5 = b' Charlie Davis   35 '
        
        # Write complete file
        f.write(header)
        f.write(field1)
        f.write(field2)
        f.write(terminator)
        f.write(record1)
        f.write(record2)  
        f.write(record3)
        f.write(record4)
        f.write(record5)
        f.flush()
        
        test_files['dbase'] = f.name
    
    # Create mock WordPerfect file
    with tempfile.NamedTemporaryFile(suffix='.wpd', delete=False) as f:
        # WordPerfect 6.0 signature + some content
        content = b'\xFF\x57\x50\x43' + b'WordPerfect Document\x00Sample content for testing.\x00'
        f.write(content)
        f.flush()
        test_files['wordperfect'] = f.name
    
    return test_files

def cleanup_test_files(test_files):
    """Clean up test files."""
    for file_path in test_files.values():
        try:
            os.unlink(file_path)
        except FileNotFoundError:
            pass

async def main():
    """Main verification routine."""
    print("🏛️  MCP Legacy Files - Installation Verification")
    print("=" * 60)
    
    # Test imports
    print("\n📦 Testing package imports...")
    try:
        from mcp_legacy_files import __version__
        from mcp_legacy_files.core.detection import LegacyFormatDetector
        from mcp_legacy_files.core.processing import ProcessingEngine
        from mcp_legacy_files.core.server import app
        print(f"✅ Package imported successfully - Version: {__version__}")
    except ImportError as e:
        print(f"❌ Import failed: {str(e)}")
        return False
    
    # Test core components
    print("\n🔧 Testing core components...")
    try:
        detector = LegacyFormatDetector()
        engine = ProcessingEngine()
        print("✅ Core components initialized successfully")
    except Exception as e:
        print(f"❌ Component initialization failed: {str(e)}")
        return False
    
    # Test format detection
    print("\n🔍 Testing format detection...")
    test_files = create_test_files()
    
    try:
        # Test dBASE detection
        dbase_info = await detector.detect_format(test_files['dbase'])
        if dbase_info.format_family == 'dbase' and dbase_info.is_legacy_format:
            print("✅ dBASE format detection working")
        else:
            print(f"⚠️  dBASE detection issue: {dbase_info.format_name}")
        
        # Test WordPerfect detection  
        wp_info = await detector.detect_format(test_files['wordperfect'])
        if wp_info.format_family == 'wordperfect' and wp_info.is_legacy_format:
            print("✅ WordPerfect format detection working")
        else:
            print(f"⚠️  WordPerfect detection issue: {wp_info.format_name}")
            
    except Exception as e:
        print(f"❌ Format detection failed: {str(e)}")
        return False
    
    # Test dBASE processing
    print("\n⚙️  Testing dBASE processing...")
    try:
        result = await engine.process_document(
            file_path=test_files['dbase'],
            format_info=dbase_info,
            preserve_formatting=True,
            method="auto",
            enable_ai_enhancement=True
        )
        
        if result.success:
            print("✅ dBASE processing successful")
            if result.text_content and "John Doe" in result.text_content:
                print("✅ Content extraction working")
            else:
                print("⚠️  Content extraction may have issues")
        else:
            print(f"⚠️  dBASE processing failed: {result.error_message}")
            
    except Exception as e:
        print(f"❌ dBASE processing error: {str(e)}")
    
    # Test supported formats
    print("\n📋 Testing supported formats...")
    try:
        formats = await detector.get_supported_formats()
        dbase_formats = [f for f in formats if f['format_family'] == 'dbase']
        if dbase_formats:
            print(f"✅ Format database loaded - {len(formats)} formats supported")
        else:
            print("⚠️  Format database may have issues")
    except Exception as e:
        print(f"❌ Format database error: {str(e)}")
    
    # Test FastMCP server
    print("\n🖥️  Testing FastMCP server...")
    try:
        # Just check that the app object exists and has tools
        if hasattr(app, 'get_tools'):
            tools = app.get_tools()
            if tools:
                print(f"✅ FastMCP server ready - {len(tools)} tools available")
            else:
                print("⚠️  No tools registered")
        else:
            print("✅ FastMCP app object created")
    except Exception as e:
        print(f"❌ FastMCP server error: {str(e)}")
    
    # Cleanup
    cleanup_test_files(test_files)
    
    # Final status
    print("\n" + "=" * 60)
    print("🏆 Installation verification completed!")
    print("\n💡 To start the MCP server:")
    print("   mcp-legacy-files")
    print("\n💡 To use the CLI:")
    print("   legacy-files-cli detect <file>")
    print("   legacy-files-cli process <file>")
    print("   legacy-files-cli formats")
    
    return True

if __name__ == "__main__":
    asyncio.run(main())