#!/usr/bin/env python3
"""
Comprehensive demo of tre-based LLM-optimized directory tree functionality
"""

import asyncio
import json
from pathlib import Path

from enhanced_mcp.file_operations import EnhancedFileOperations


async def demo_tre_llm_integration():
    """Demo tre integration for LLM-optimized directory analysis"""

    print("🚀 Enhanced MCP Tools - tre Integration Demo")
    print("=" * 60)

    # Initialize the file operations class
    file_ops = EnhancedFileOperations()

    # Test on current project
    project_dir = "/home/rpm/claude/enhanced-mcp-tools"

    # Demo 1: Fast tre-based tree listing
    print("\n🌳 Demo 1: Lightning-Fast tre Tree Listing")
    print(f"📁 Scanning: {project_dir}")

    tre_result = await file_ops.tre_directory_tree(
        root_path=project_dir,
        max_depth=2,
        include_hidden=False,
        exclude_patterns=[r"\.git", r"\.venv", r"__pycache__"],
    )

    if tre_result.get("success"):
        metadata = tre_result["metadata"]
        stats = metadata["statistics"]

        print(f"⚡ Execution time: {metadata['execution_time_seconds']}s")
        print(
            f"📊 Found: {stats['total']} items ({stats['files']} files, {stats['directories']} directories)"
        )
        print(f"🤖 LLM optimized: {metadata['optimized_for_llm']}")
        print(f"🔧 Command: {metadata['command']}")

        # Show sample structure
        print("\n📋 Sample Structure:")
        tree = tre_result["tree"]
        for i, item in enumerate(tree.get("contents", [])[:5]):
            icon = "📁" if item["type"] == "directory" else "📄"
            print(f"   {icon} {item['name']}")
        if len(tree.get("contents", [])) > 5:
            print(f"   ... and {len(tree.get('contents', [])) - 5} more items")
    else:
        print(f"❌ Error: {tre_result.get('error')}")
        return

    # Demo 2: LLM Context Generation with File Contents
    print("\n🤖 Demo 2: Complete LLM Context Generation")

    llm_context = await file_ops.tre_llm_context(
        root_path=project_dir,
        max_depth=2,
        include_file_contents=True,
        exclude_patterns=[r"\.git", r"\.venv", r"__pycache__", r"test_.*\.py", r"demo_.*\.py"],
        file_extensions=[".py", ".md", ".toml"],
        max_file_size_kb=30,
    )

    if llm_context.get("success"):
        context = llm_context["context"]
        summary = context["summary"]

        print("📊 Context Statistics:")
        print(f"   Total files scanned: {summary['total_files']}")
        print(f"   Files included: {summary['included_files']}")
        print(f"   Files excluded: {summary['excluded_files']}")
        print(f"   Total content size: {summary['total_size_bytes']} bytes")

        print("\n📄 Included Files:")
        for i, (path, content) in enumerate(list(context["file_contents"].items())[:3]):
            print(f"   {i+1}. {path}")
            print(f"      Size: {content['size_bytes']} bytes, Lines: {content['lines']}")
            if "content" in content and len(content["content"]) > 100:
                preview = content["content"][:100].replace("\n", "\\n")
                print(f"      Preview: {preview}...")

        print("\n🤖 LLM Summary:")
        print(context["llm_summary"])
    else:
        print(f"❌ LLM Context Error: {llm_context.get('error')}")

    # Demo 3: Different tre Options
    print("\n🔧 Demo 3: tre Options Showcase")

    options_demo = [
        {"name": "Directories Only", "params": {"directories_only": True, "max_depth": 1}},
        {"name": "Include Hidden Files", "params": {"include_hidden": True, "max_depth": 1}},
        {"name": "Deep Scan", "params": {"max_depth": 3}},
        {"name": "Selective Exclusion", "params": {"exclude_patterns": [r"\.py$"], "max_depth": 1}},
    ]

    for demo in options_demo:
        print(f"\n   📋 {demo['name']}:")
        result = await file_ops.tre_directory_tree(root_path=project_dir, **demo["params"])

        if result.get("success"):
            stats = result["metadata"]["statistics"]
            time_taken = result["metadata"]["execution_time_seconds"]
            print(f"      ✅ {stats['total']} items in {time_taken}s")
        else:
            print(f"      ❌ Error: {result.get('error')}")

    # Demo 4: Performance Comparison
    print("\n⚡ Demo 4: Performance Benefits")
    print("🦀 tre (Rust-based):")
    start_time = asyncio.get_event_loop().time()
    tre_perf = await file_ops.tre_directory_tree(root_path=project_dir, max_depth=3)
    tre_time = asyncio.get_event_loop().time() - start_time

    if tre_perf.get("success"):
        tre_stats = tre_perf["metadata"]["statistics"]
        print(f"   ⚡ {tre_stats['total']} items in {tre_time:.4f}s")
        print("   🚀 Rust performance + LLM optimization")

    print("\n🐍 Python implementation:")
    start_time = asyncio.get_event_loop().time()
    python_perf = await file_ops.list_directory_tree(
        root_path=project_dir, max_depth=3, include_metadata=False
    )
    python_time = asyncio.get_event_loop().time() - start_time

    if "error" not in python_perf:
        python_stats = python_perf["summary"]["total_items"]
        print(f"   🐌 {python_stats} items in {python_time:.4f}s")
        print("   📊 More metadata but slower")

        speedup = python_time / tre_time if tre_time > 0 else 1
        print(f"   🏆 tre is {speedup:.1f}x faster!")

    # Demo 5: Real-world use cases
    print("\n🎯 Demo 5: Real-World Use Cases")

    use_cases = [
        {
            "name": "Code Review Context",
            "description": "Generate context for reviewing Python code",
            "params": {
                "file_extensions": [".py"],
                "exclude_patterns": [r"test_.*\.py", r"__pycache__", r"\.pyc$"],
                "max_file_size_kb": 50,
            },
        },
        {
            "name": "Documentation Analysis",
            "description": "Analyze project documentation structure",
            "params": {"file_extensions": [".md", ".rst", ".txt"], "max_file_size_kb": 200},
        },
        {
            "name": "Configuration Audit",
            "description": "Review configuration files",
            "params": {
                "file_extensions": [".toml", ".json", ".yaml", ".yml", ".ini"],
                "max_file_size_kb": 20,
            },
        },
    ]

    for use_case in use_cases:
        print(f"\n   🎯 {use_case['name']}: {use_case['description']}")

        context = await file_ops.tre_llm_context(
            root_path=project_dir, max_depth=3, **use_case["params"]
        )

        if context.get("success"):
            stats = context["context"]["summary"]
            print(f"      ✅ {stats['included_files']} files ({stats['total_size_bytes']} bytes)")
        else:
            print(f"      ❌ Error: {context.get('error')}")

    # Demo 6: JSON Export for External Tools
    print("\n💾 Demo 6: Integration with External Tools")

    export_result = await file_ops.tre_directory_tree(
        root_path=project_dir, max_depth=2, exclude_patterns=[r"\.git", r"\.venv"]
    )

    if export_result.get("success"):
        # Export for different tools
        exports = [
            {"name": "Claude Analysis", "file": "claude_context.json"},
            {"name": "VS Code Extension", "file": "vscode_tree.json"},
            {"name": "CI/CD Pipeline", "file": "build_manifest.json"},
        ]

        for export in exports:
            export_path = Path(project_dir) / export["file"]
            with open(export_path, "w") as f:
                json.dump(export_result, f, indent=2)

            size_mb = export_path.stat().st_size / 1024 / 1024
            print(f"   📄 {export['name']}: {export['file']} ({size_mb:.2f} MB)")

            # Clean up
            export_path.unlink()

    print("\n🎉 tre Integration Demo Complete!")
    print("✨ Key Benefits:")
    print("   🚀 Lightning-fast Rust performance")
    print("   🤖 LLM-optimized JSON output")
    print("   🔧 Extensive filtering and configuration")
    print("   📊 Rich metadata and statistics")
    print("   🎯 Purpose-built for modern development workflows")
    print("   💾 Perfect for CI/CD and automation")


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