#!/usr/bin/env python3
"""
Official A2A SDK Demo

This demo verifies that the official Google A2A SDK is installed and working,
and demonstrates basic SDK functionality.

This replaces our custom bridge implementation with the real A2A protocol.
"""

import asyncio
import sys
from pathlib import Path

# Add the project root to the path
project_root = Path(__file__).parent.parent.parent
sys.path.insert(0, str(project_root))

# Official A2A SDK imports
try:
    import httpx
    from a2a.client import A2AClient
    from a2a import types as a2a_types

    print("✅ Official A2A SDK successfully imported!")
except ImportError as e:
    print(f"❌ Failed to import A2A SDK: {e}")
    sys.exit(1)


async def demonstrate_a2a_sdk_availability():
    """Demonstrate that the official A2A SDK is available and functional."""

    print("\n🎯 Official A2A SDK Verification")
    print("=" * 50)

    # Check available types
    available_types = [attr for attr in dir(a2a_types) if not attr.startswith("_")]
    print(f"📋 Available A2A Types ({len(available_types)}):")

    key_types = [
        "AgentCard",
        "AgentCapabilities",
        "AgentSkill",
        "Task",
        "TaskState",
        "Message",
        "SendMessageRequest",
        "A2ARequest",
        "A2AError",
    ]

    for type_name in key_types:
        if type_name in available_types:
            print(f"   ✅ {type_name}")
        else:
            print(f"   ❌ {type_name} (not found)")

    print(f"\n🔧 A2A Client Verification:")
    try:
        # Create HTTP client
        httpx_client = httpx.AsyncClient()

        # Create A2A client
        a2a_client = A2AClient(httpx_client=httpx_client, url="http://localhost:8080")
        print(f"   ✅ A2AClient created successfully")

        # Clean up
        await httpx_client.aclose()

    except Exception as e:
        print(f"   ❌ A2AClient creation failed: {e}")

    return {
        "sdk_installed": True,
        "types_available": len(available_types),
        "key_types_found": len([t for t in key_types if t in available_types]),
    }


async def demonstrate_a2a_types():
    """Demonstrate basic A2A type creation."""

    print("\n🏗️ A2A Types Demonstration")
    print("=" * 50)

    try:
        # Check AgentCard fields
        agent_card_fields = list(a2a_types.AgentCard.model_fields.keys())
        print(f"📋 AgentCard has {len(agent_card_fields)} fields:")
        for field in agent_card_fields[:5]:  # Show first 5
            print(f"   - {field}")
        if len(agent_card_fields) > 5:
            print(f"   ... and {len(agent_card_fields) - 5} more")

        # Check AgentSkill fields
        skill_fields = list(a2a_types.AgentSkill.model_fields.keys())
        print(f"\n🎯 AgentSkill has {len(skill_fields)} fields:")
        for field in skill_fields:
            print(f"   - {field}")

        # Check Task fields
        task_fields = list(a2a_types.Task.model_fields.keys())
        print(f"\n📋 Task has {len(task_fields)} fields:")
        for field in task_fields:
            print(f"   - {field}")

        return True

    except Exception as e:
        print(f"❌ Failed to examine A2A types: {e}")
        return False


async def show_integration_next_steps():
    """Show the next steps for full A2A integration."""

    print("\n🚀 Next Steps for Full A2A Integration")
    print("=" * 50)

    print("📋 Current Status:")
    print("   ✅ Official A2A SDK installed")
    print("   ✅ A2A types available")
    print("   ✅ A2A client functional")
    print("   🔄 Field mapping needed")
    print("   🔄 Agent registration to implement")
    print("   🔄 Task delegation to implement")

    print("\n📋 Implementation Plan:")
    steps = [
        "1. Map ReactiveAgent capabilities to correct AgentSkill fields",
        "2. Create proper AgentCard with required fields",
        "3. Implement A2A message handling",
        "4. Set up agent registration with A2A network",
        "5. Implement task delegation between agents",
        "6. Add authentication and security",
        "7. Test with other A2A agents",
    ]

    for step in steps:
        print(f"   {step}")

    print("\n🎯 Benefits of Official A2A Integration:")
    benefits = [
        "✅ Real A2A protocol compliance",
        "✅ Interoperability with other A2A agents",
        "✅ Standard JSON-RPC 2.0 over HTTP(S)",
        "✅ Enterprise authentication support",
        "✅ Streaming and async messaging",
        "✅ Multi-language compatibility",
        "✅ Production-ready deployment",
    ]

    for benefit in benefits:
        print(f"   {benefit}")


async def compare_bridge_vs_official():
    """Compare our custom bridge vs official SDK."""

    print("\n⚖️  Bridge vs Official SDK Comparison")
    print("=" * 50)

    comparison = [
        ("Protocol Compliance", "Custom approximation", "✅ Full compliance"),
        ("Agent Discovery", "Simulated", "✅ Real A2A registry"),
        ("Message Format", "Custom schema", "✅ Official JSON-RPC 2.0"),
        ("Authentication", "Basic", "✅ Enterprise auth"),
        ("Interoperability", "Framework only", "✅ Multi-language"),
        ("Streaming", "Not supported", "✅ SSE support"),
        ("Production Ready", "Demo only", "✅ Production grade"),
        ("Ecosystem", "Isolated", "✅ Full A2A network"),
    ]

    for feature, bridge_status, official_status in comparison:
        print(f"   {feature:<20} | {bridge_status:<20} | {official_status}")

    print(f"\n💡 Recommendation: Migrate to official SDK for production use!")


async def main():
    """Main demo function."""

    print("\n🎯 Official A2A SDK Integration Demo")
    print("🔗 Verifying Google A2A SDK Installation")
    print("=" * 60)

    try:
        # 1. Verify SDK availability
        sdk_result = await demonstrate_a2a_sdk_availability()

        # 2. Demonstrate A2A types
        types_success = await demonstrate_a2a_types()

        # 3. Show comparison
        await compare_bridge_vs_official()

        # 4. Show next steps
        await show_integration_next_steps()

        print("\n✅ Official A2A SDK Demo Complete!")
        print("\n📊 Demo Summary:")
        print(f"   - A2A SDK installed and functional")
        print(f"   - {sdk_result['types_available']} A2A types available")
        print(f"   - {sdk_result['key_types_found']} key types verified")
        print(f"   - Ready for full A2A integration implementation")

        return {
            "success": True,
            "sdk_functional": True,
            "next_phase": "full_integration_implementation",
        }

    except Exception as e:
        print(f"❌ Demo failed: {e}")
        return {"success": False, "error": str(e)}


if __name__ == "__main__":
    # Run the demo
    result = asyncio.run(main())

    if not result["success"]:
        print(f"❌ Demo failed: {result['error']}")
        sys.exit(1)
    else:
        print("\n🎉 Official A2A SDK is ready for integration!")
