from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
from utils.config import settings
import time

# 创建数据库引擎
DATABASE_URL = f"mysql+pymysql://{settings.database.user}:{settings.database.password}@{settings.database.host}:{settings.database.port}/{settings.database.database}?charset=utf8mb4"

engine = create_engine(
    DATABASE_URL,
    pool_size=settings.database.pool_size,
    max_overflow=settings.database.max_overflow,
    pool_recycle=settings.database.pool_recycle,
    pool_pre_ping=True,
    echo=settings.app.debug
)

SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

Base = declarative_base()


def get_db():
    """获取数据库会话"""
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()


def get_unix() -> int:
    """获取当前时间戳"""
    return int(time.time())