from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession, async_sessionmaker
from sqlalchemy.orm import DeclarativeBase
from sqlalchemy import Column, String, Integer, DateTime, Text, JSON
from datetime import datetime
from app.config import settings
from app.logger import get_logger

logger = get_logger("database")


class Base(DeclarativeBase):
    pass


class CallbackLog(Base):
    __tablename__ = "callback_logs"
    
    id = Column(Integer, primary_key=True, autoincrement=True)
    site_id = Column(String(100), nullable=False, comment="站点ID")  # 新增siteId字段
    remote_address = Column(String(45), nullable=True, comment="客户端IP地址")
    server_ip = Column(String(45), nullable=True, comment="服务器IP地址")
    request_url = Column(String(500), nullable=False)
    request_headers = Column(JSON, nullable=False)
    request_body = Column(JSON, nullable=False)
    created_at = Column(DateTime, default=datetime.now)


class ExternalApiLog(Base):
    __tablename__ = "external_api_logs"  # 重命名表，更通用
    
    id = Column(Integer, primary_key=True, autoincrement=True)
    callback_logs_id = Column(Integer, nullable=False)
    request_url = Column(String(500), nullable=False)
    request_headers = Column(JSON, nullable=False)
    request_body = Column(JSON, nullable=False)
    response_status = Column(Integer)
    response_headers = Column(JSON)
    response_body = Column(Text)
    retry_count = Column(Integer, default=0)  # 重试次数
    created_at = Column(DateTime, default=datetime.now)


# 创建数据库引擎
engine = create_async_engine(
    settings.database_url,
    echo=settings.debug,
    future=True
)

# 创建会话工厂
AsyncSessionLocal = async_sessionmaker(
    engine,
    class_=AsyncSession,
    expire_on_commit=False
)


async def get_db():
    async with AsyncSessionLocal() as session:
        try:
            yield session
        finally:
            await session.close()


async def init_db():
    logger.info("📊 初始化数据库表结构...")
    try:
        async with engine.begin() as conn:
            await conn.run_sync(Base.metadata.create_all)
        logger.info("✅ 数据库表结构初始化完成")
    except Exception as e:
        logger.error(f"❌ 数据库初始化失败: {e}")
        raise