import asyncio
from playwright.async_api import async_playwright
from application_handler import ApplicationHandler
from telegram_bot import TelegramBot
from handlers.wgcompany_notifier import WGCompanyNotifier
import logging
from logging.handlers import RotatingFileHandler
import os
from dotenv import load_dotenv
from state_manager import StateManager
from pathlib import Path


# --- Environment & Logging Setup ---
# Load environment variables from .env file
load_dotenv()

# Configure logging: file (rotating) + console for Docker visibility, enforce for all modules
logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s - %(levelname)s - %(message)s",
    handlers=[
        RotatingFileHandler("data/monitor.log", maxBytes=1 * 1024 * 1024, backupCount=5),  # 1 MB per file, 5 backups
        logging.StreamHandler()
    ],
    force=True  # Enforce for all modules, Python 3.8+
)
logger = logging.getLogger()  # Use root logger for universal logging
logger.info("Logging initialized: outputting to both data/monitor.log and console (Docker logs)")

# Interval (seconds) between checks for new listings
CHECK_INTERVAL = int(os.getenv("CHECK_INTERVAL", 300))  # Default: 300 seconds


def _flush_rotating_file_handlers():
    """Flush all RotatingFileHandlers attached to the root logger."""
    root_logger = logging.getLogger()
    for handler in root_logger.handlers:
        if isinstance(handler, RotatingFileHandler):
            handler.flush()

async def main():
    logger.info("Starting the bot...")

    # Initialize state manager
    state_manager = StateManager(Path("data/state.json"))

    # Application handler manages browser/context
    app_handler = ApplicationHandler(None, state_manager)

    # Set up Telegram bot and inject into handler, passing the main event loop
    event_loop = asyncio.get_running_loop()
    telegram_bot = TelegramBot(app_handler, event_loop=event_loop)
    telegram_bot.start()  # Start Telegram command listener for reactivity
    app_handler.set_telegram_bot(telegram_bot)

    # Start WGCompanyNotifier as a background task
    wg_notifier = WGCompanyNotifier(telegram_bot=telegram_bot, refresh_minutes=10)
    wg_task = asyncio.create_task(wg_notifier.run())

    await app_handler.init_browser()


    try:
        logger.info(f"Bot is now running. Refreshing every {CHECK_INTERVAL} seconds...")
        while True:
            current_listings = await app_handler.fetch_listings()
            if not current_listings:
                logger.warning("No listings fetched")
                await asyncio.sleep(CHECK_INTERVAL)
                _flush_rotating_file_handlers()
                continue
            previous_listings = app_handler.load_previous_listings()
            if not previous_listings:
                logger.info(f"First run - saving {len(current_listings)} listings as baseline")
                app_handler.save_listings(current_listings)
                await asyncio.sleep(CHECK_INTERVAL)
                _flush_rotating_file_handlers()
                continue
            new_listings = app_handler.find_new_listings(current_listings, previous_listings)
            application_results = {}
            if new_listings:
                logger.info(f"Found {len(new_listings)} new listing(s)")
                app_handler.log_listing_times(new_listings)
                if app_handler.is_autopilot_enabled():
                    logger.info("Autopilot enabled - applying to listings...")
                    application_results = await app_handler.apply_to_listings(new_listings)
            app_handler.notify_new_listings(new_listings, application_results)
            app_handler.save_listings(current_listings)
            await asyncio.sleep(CHECK_INTERVAL)
            _flush_rotating_file_handlers()
    except (KeyboardInterrupt, SystemExit):
        logger.info("Shutting down...")
    except Exception as e:
        logger.error(f"[MAIN] Error in main loop: {e}")
    finally:
        if hasattr(app_handler, 'browser') and app_handler.browser:
            await app_handler.browser.close()
            logger.info("Browser closed successfully.")

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