#!/usr/bin/env python
"""
Main application entry point for ContinuumAgent
Starts the FastAPI server and initializes all components
"""

import os
import sys
import uvicorn
from huggingface_hub import hf_hub_download
from fastapi import FastAPI
from app.main import app as fastapi_app

def ensure_model_exists():
    """
    Ensure the GGUF model exists, download if needed
    
    Returns:
        Path to the model file
    """
    model_dir = "models/slow"
    os.makedirs(model_dir, exist_ok=True)
    
    # Look for existing model
    model_files = [f for f in os.listdir(model_dir) if f.endswith(".gguf")]
    
    if model_files:
        model_path = os.path.join(model_dir, model_files[0])
        print(f"Using existing model: {model_path}")
        return model_path
    
    # Download model
    try:
        print("Downloading Mistral-7B-Instruct model (quantized)...")
        model_path = hf_hub_download(
            repo_id="TheBloke/Mistral-7B-Instruct-v0.2-GGUF",
            filename="mistral-7b-instruct-v0.2.Q4_K_M.gguf",
            local_dir=model_dir
        )
        print(f"Successfully downloaded model to: {model_path}")
        return model_path
    except Exception as e:
        print(f"Error downloading model: {e}")
        print("Please download the model manually and place it in the models/slow directory")
        sys.exit(1)

def create_directory_structure():
    """Create required directory structure"""
    os.makedirs("models/slow", exist_ok=True)
    os.makedirs("models/patches", exist_ok=True)
    os.makedirs("models/registry", exist_ok=True)
    os.makedirs("models/gates", exist_ok=True)
    os.makedirs("data/wiki_edits", exist_ok=True)

def main():
    """Main entry point"""
    # Create directory structure
    create_directory_structure()
    
    # Ensure model exists
    model_path = ensure_model_exists()
    
    # Run server
    host = os.environ.get("HOST", "0.0.0.0")
    port = int(os.environ.get("PORT", "8000"))
    
    print(f"Starting ContinuumAgent server on {host}:{port}")
    uvicorn.run(fastapi_app, host=host, port=port)

if __name__ == "__main__":
    main()