"""
Alpha Factory — Entry Point v2
Run: python -m alpha_factory.run [--dry-run] [--batch-size N] [--interactive]
                                 [--proven] [--enable-brain]
"""
import os
import asyncio
import argparse

# Load .env file FIRST before anything else reads env vars
try:
    from dotenv import load_dotenv
    load_dotenv()  # Reads .env from current directory
except ImportError:
    pass  # python-dotenv not installed; rely on system env vars

from rich.console import Console
from .config import load_config
from .infra import ModelManager, interactive_model_select, LLMClient
from .orchestration import AlphaPipeline

console = Console()


async def setup_models(interactive: bool = False, hf_token: str = None) -> ModelManager:
    """Discover models and optionally let user pick interactively."""
    manager = ModelManager(hf_token=hf_token)

    console.print("\n[bold]🔍 Discovering available models...[/]")
    await manager.discover_all()

    if interactive:
        selections = interactive_model_select(manager)
        for tier, model in selections.items():
            manager.select_model(tier, model)
    else:
        manager.auto_assign_defaults()

    manager.print_status()
    return manager


def main():
    parser = argparse.ArgumentParser(description="Alpha Factory — LLM-Driven Alpha Generation Pipeline")
    parser.add_argument("--dry-run", action="store_true", help="Run without BRAIN submissions")
    parser.add_argument("--batch-size", type=int, default=10, help="Number of candidates per batch")
    parser.add_argument("--interactive", action="store_true", help="Interactively select models")
    parser.add_argument("--hf-token", type=str, default=None, help="HuggingFace API token (or set HF_TOKEN env)")
    parser.add_argument("--ollama-url", type=str, default="http://localhost:11434", help="Ollama server URL")
    parser.add_argument("--proven", action="store_true", help="Use proven templates (no LLM, deterministic generation)")
    parser.add_argument("--enable-brain", action="store_true", help="Enable live BRAIN submission (requires BRAIN_SESSION_TOKEN)")
    args = parser.parse_args()

    config = load_config()
    config.batch_size = args.batch_size
    config.use_proven_templates = args.proven
    config.enable_brain_client = args.enable_brain

    if args.dry_run:
        config.enable_brain_client = False

    # Resolve HF token: CLI arg > env var (loaded from .env)
    hf_token = args.hf_token or os.getenv("HF_TOKEN")

    mode_str = "PROVEN TEMPLATES" if args.proven else "LLM GENERATION"
    brain_str = "LIVE (BRAIN submissions)" if config.enable_brain_client else "DRY RUN"

    console.print(f"""
[bold green]━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━[/]
[bold green]  ALPHA FACTORY v0.2.0[/]
[bold green]  Open-Source LLM-Driven Pipeline for WorldQuant BRAIN[/]
[bold green]━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━[/]

  Mode:       {mode_str}
  Brain:      {brain_str}
  Batch size: {args.batch_size}
  Ollama:     {args.ollama_url}
  HF Token:   {"✓ Set" if hf_token else "✗ Not set (cloud models unavailable)"}
  
  [yellow]NOTE: This is v0.2.0 with real personas wired, but BRAIN integration
  requires a valid BRAIN_SESSION_TOKEN. See .env.example for setup.[/]
""")

    # Discover and select models (only needed for LLM mode)
    if not args.proven:
        manager = asyncio.run(setup_models(
            interactive=args.interactive,
            hf_token=hf_token,
        ))
    else:
        manager = None
        console.print("  [green]Proven template mode — no LLM model discovery needed[/]")

    # Update LLM config with Ollama URL
    config.llm.base_url = f"{args.ollama_url}/v1"

    # Create pipeline
    pipeline = AlphaPipeline(config)
    if manager:
        pipeline.llm = LLMClient(config.llm, model_manager=manager)

    # Initialize BRAIN client if enabled
    if config.enable_brain_client:
        try:
            import aiohttp
            session = aiohttp.ClientSession()
            asyncio.run(pipeline.init_brain_client(session))
        except ImportError:
            console.print("[red]aiohttp required for BRAIN client. pip install aiohttp[/]")
            config.enable_brain_client = False

    try:
        result = asyncio.run(pipeline.run_batch(args.batch_size))
        console.print(f"\n[bold]Final: {result}[/]")
    except KeyboardInterrupt:
        console.print("\n[yellow]Interrupted by user[/]")
    finally:
        pipeline.close()


if __name__ == "__main__":
    main()