import logging
import asyncio
from sqlalchemy import select
from app.db.database import SessionLocal
from app.db.models import ApiSettings
from app.core.config import settings
from app.services.kis_auth import kis_auth
from app.services.sync_service import sync_service
from app.services.telegram_service import telegram_service

logger = logging.getLogger(__name__)

async def check_kis_connectivity(db_session, settings_obj):
    if not settings_obj.appKey or not settings_obj.appSecret:
        logger.warning(">> [KIS] Credentials NOT FOUND in DB.")
        return False
    
    logger.info(">> [KIS] Attempting Authentication...")
    try:
        token = await kis_auth.get_access_token(db_session)
        masked_token = token[:10] + "..." if token else "None"
        logger.info(f"   [OK] Access Token Valid ({masked_token})")
        return True
    except Exception as e:
        logger.error(f"   [FAILED] KIS Auth Failed: {e}")
        return False

async def check_telegram_connectivity(settings_obj, is_startup=False):
    if settings_obj.useTelegram and settings_obj.telegramToken and settings_obj.telegramChatId:
        logger.info(">> [Telegram] Integration Enabled.")
        if is_startup:
            msg = "🚀 <b>BatchuKis 배취키스</b> 시스템이 시작되었습니다.\n자동매매 엔진이 가동 중입니다."
            await telegram_service.send_message(settings_obj.telegramToken, settings_obj.telegramChatId, msg)
        return True
    else:
        # logger.debug(">> [Telegram] Disabled or missing config.")
        return False

async def run_startup_sequence():
    """
    Executes the Phase 1~4 startup sequence.
    """
    logger.info("=== Starting System Initialization Sequence ===")
    
    async with SessionLocal() as db_session:
        # Phase 1: Load Settings
        stmt = select(ApiSettings).where(ApiSettings.id == 1)
        result = await db_session.execute(stmt)
        settings_obj = result.scalar_one_or_none()
        
        if not settings_obj:
            settings_obj = ApiSettings(id=1)
            db_session.add(settings_obj)
            await db_session.commit()
            logger.info("Created Default ApiSettings.")
            
        # Phase 2: KIS & Telegram
        await check_kis_connectivity(db_session, settings_obj)
        await check_telegram_connectivity(settings_obj, is_startup=True)

        # Phase 3: Data Sync
        logger.info(">> [Phase 3] Syncing Account & Master Data...")
        await sync_service.sync_account(db_session)
        
        from app.services.master_service import master_service
        await master_service.sync_master_data(db_session)
        
    logger.info("=== System Initialization Complete ===")