#!/usr/bin/env python3
"""AION Search - Galaxy Semantic Search Application.

A Dash web application for semantic search over galaxy images using CLIP embeddings.
"""

import os
import logging
import argparse

# Fix OpenMP conflict - MUST be set before importing torch/numpy
os.environ['KMP_DUPLICATE_LIB_OK'] = 'TRUE'

import dash
import dash_bootstrap_components as dbc

import src.config as config
from src.config import FEATURE_VECTOR_ADDITION
from src.components import get_app_theme, create_layout
from src.services import CLIPModelService, EmbeddingService, ZillizService, SearchService, ImageProcessingService
from src.callbacks import register_callbacks

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


def create_app(checkpoint_path: str) -> dash.Dash:
    """Create and configure the Dash application.

    Args:
        checkpoint_path: Path to the CLIP model checkpoint

    Returns:
        Configured Dash app instance
    """
    # Initialize Dash app
    app = dash.Dash(
        __name__,
        external_stylesheets=[dbc.themes.BOOTSTRAP, dbc.icons.FONT_AWESOME],
        suppress_callback_exceptions=True
    )
    server = app.server

    # Set custom theme
    app.index_string = get_app_theme()

    # Set app title
    app.title = "AION Galaxy Search"

    # Initialize services
    logger.info("Initializing services...")

    # Load CLIP model
    clip_service = CLIPModelService()
    clip_service.load_model(checkpoint_path)

    # Create service instances
    embedding_service = EmbeddingService(clip_service)
    zilliz_service = ZillizService()

    # Initialize image processing service for advanced search
    # (now uses pre-existing embeddings from Zilliz, no model loading needed)
    image_service = ImageProcessingService()
    logger.info("Image processing service initialized successfully")

    search_service = SearchService(embedding_service, zilliz_service, image_service)

    # Get actual count from Zilliz and update config
    actual_count = zilliz_service.get_collection_count()
    if actual_count > 0:
        config.TOTAL_GALAXIES = actual_count
        logger.info(f"Services initialized. Total galaxies: {config.TOTAL_GALAXIES:,}")
    else:
        logger.warning(f"Failed to get collection count from Zilliz, using default: {config.TOTAL_GALAXIES:,}")

    # Create app layout
    app.layout = create_layout()

    # Register callbacks
    register_callbacks(app, search_service)

    logger.info("App initialization complete!")

    return app


def main():
    """Main entry point for the application."""
    parser = argparse.ArgumentParser(description='AION Galaxy Search App')
    parser.add_argument(
        '--checkpoint',
        type=str,
        default='aionsearchmodel.pt',
        help='Path to CLIP model checkpoint'
    )
    parser.add_argument(
        '--port',
        type=int,
        default=7860,
        help='Port to run the app on'
    )
    parser.add_argument(
        '--debug',
        action='store_true',
        help='Run in debug mode'
    )
    parser.add_argument(
        '--host',
        type=str,
        default='0.0.0.0',
        help='Host to run the app on'
    )

    args = parser.parse_args()

    # Create and run app
    logger.info("Starting AION Galaxy Search...")
    app = create_app(args.checkpoint)

    logger.info(f"Server starting on {args.host}:{args.port}")
    app.run_server(
        debug=args.debug,
        host=args.host,
        port=args.port
    )
app = create_app('aionsearchmodel.pt')
server = app.server

if __name__ == "__main__":
    main()