"""
Main entry point for LangGraph bird classification agents.
"""
import asyncio
import sys
from typing import Optional

from .config import AgentConfig
from .agents import AgentFactory

async def run_classifier_demo(image_url: Optional[str] = None):
    """Run basic classifier demo"""

    AgentConfig.print_config()

    # Create agent
    agent = await AgentFactory.create_classifier_agent()

    # Default test URL if none provided
    if not image_url:
        image_url = "https://images.unsplash.com/photo-1445820200644-69f87d946277?w=400"
    
    print("="*70)
    print("Testing bird classification...")
    print(f"[IMAGE URL]: {image_url}\n")

    # Invoke agent
    result = await agent.ainvoke({
        "messages": [{
            "role": "user",
            "content": f"What bird species is this? {image_url}"
        }]
    })

    # Print result
    print("\n[AGENT RESPONSE]:")
    print(result["messages"][-1].content)
    print("\n[DEMO COMPLETE!]\n")

async def run_interactive_chat():
    """Run interactive chat with agent."""

    print("\n"+"="*70)
    print("Bird Classification Agent - Interactive Mode")
    print("="*70)
    print("Commands:")
    print(". - Type 'quit' or 'exit' to end session")
    print("  - Paste image URLs to classify birds")
    print(". - Ask about bird locations, sightings, hotspots")
    print("="*70+"\n")

    # Create multi-server agent with memory
    agent = await AgentFactory.create_multi_server_agent(with_memory=True)

    # Thread ID for conversation memory
    config = {"configurable": {"thread_id": "interactive_session"}}

    while True:
        try:
            user_input = input("\nYou: ").strip()

            if user_input.lower() in ['quit', 'exit', 'q']:
                print("\nGoodbye! Happy birding!\n")
                break

            if not user_input:
                continue

            # Invoke agent
            result = await agent.ainvoke(
                {"messages": [{"role": "user", "content": user_input}]},
                config
            )

            # Print response
            print(f"\nAgent: {result['messages'][-1].content}")

        except KeyboardInterrupt:
            print("\nGoodbye! Happy birding!\n")
            break
        except Exception as e:
            print(f"\n[ERROR]: {e}")

def main():
    """Main entry point"""

    if len(sys.argv) > 1:
        command = sys.argv[1]

        if command == "interactive":
            asyncio.run(run_interactive_chat())
        elif command == "demo":
            url = sys.argv[2] if len(sys.argv) > 2 else None
            asyncio.run(run_classifier_demo(url))
        else:
            print(f"Unknown command: {command}")
            print("Usage:")
            print("  python -m langgraph_agent demo [url]")
            print("  python -m langgraph_agent interactive")
    else:
        # Default: run demo
        asyncio.run(run_classifier_demo())

if __name__ == "__main__":
    main()