from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker

# 远程MySQL数据库配置
SQLALCHEMY_DATABASE_URL = "mysql+pymysql://root:911Forever@119.28.86.234:3306/lottery"

# 创建数据库引擎
engine = create_engine(
    SQLALCHEMY_DATABASE_URL,
    pool_pre_ping=True,
    pool_recycle=3600,
    pool_size=5,
    max_overflow=10
)

# 创建会话工厂
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

# 创建基类
Base = declarative_base()

# 获取数据库会话


def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()