import os
import sys
import torch
import subprocess
import logging

logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
logger = logging.getLogger(__name__)

logger.info("="*50)
logger.info("Starting MV3DR Application")
logger.info("="*50)

if not os.path.exists('dust3r/.git'):
    logger.info("Initializing dust3r submodule...")
    subprocess.run(['git', 'submodule', 'update', '--init', '--recursive'], check=False)

logger.info("Adding dust3r to Python path...")
sys.path.append(os.path.join(os.path.dirname(__file__), 'dust3r'))

logger.info("Importing model initialization module...")
from model import initialize

logger.info("Importing UI builder...")
from gradio_ui import build_ui

logger.info("Importing configuration...")
from config import WEIGHTS_PATH, OUTPUT_DIR


def main():
    logger.info("Creating output directory...")
    os.makedirs(OUTPUT_DIR, exist_ok=True)
    
    device = "cuda" if torch.cuda.is_available() else "cpu"
    logger.info(f"Using device: {device}")
    
    logger.info("Loading DUSt3R model...")
    logger.info(f"Model weights path: {WEIGHTS_PATH}")
    model = initialize(WEIGHTS_PATH, device)
    logger.info("Model loaded successfully!")
    
    logger.info("Building Gradio UI...")
    app = build_ui(OUTPUT_DIR, model, device)
    logger.info("UI built successfully!")
    
    logger.info("Launching application...")
    app.queue().launch(show_api=False)
    logger.info("Application started!")


if __name__ == "__main__":
    main()