"""
Command line interface for PicoGent
"""

import asyncio
import argparse
import sys
import os
from .agent import Agent
from .config import Config


async def main():
    """Main CLI entry point"""
    parser = argparse.ArgumentParser(description="PicoGent - Minimal AI Coding Agent")
    parser.add_argument("message", nargs="*", help="Message to send to the agent")
    parser.add_argument("--config", "-c", default="config.json", help="Config file path")
    parser.add_argument("--session", "-s", help="Session file path (JSONL)")
    parser.add_argument("--workspace", "-w", help="Workspace directory")
    
    args = parser.parse_args()
    
    # Join message parts
    message = " ".join(args.message) if args.message else None
    
    # Read from stdin if no message provided
    if not message:
        if sys.stdin.isatty():
            print("Enter your message (or pipe input):")
            message = input()
        else:
            message = sys.stdin.read().strip()
    
    if not message:
        print("Error: No message provided")
        sys.exit(1)
    
    # Load config
    try:
        if os.path.exists(args.config):
            config = Config.from_file(args.config)
        else:
            print(f"Warning: Config file '{args.config}' not found, using defaults")
            config = Config()
    except Exception as e:
        print(f"Error loading config: {e}")
        sys.exit(1)
    
    # Override workspace if specified
    if args.workspace:
        config.workspace = args.workspace
    
    # Create and run agent
    try:
        agent = Agent(config)
        response = await agent.run(message, session_file=args.session)
        print(response)
    except Exception as e:
        print(f"Error: {e}")
        sys.exit(1)


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