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

Base = declarative_base()

user = ""
password = ""
host = ""
db = ''


def get_engine():
    engine = create_engine(
        f"mysql+pymysql://{'user'}:{'password'}@{'host'}/{'db'}?charset=utf8mb4")
    return engine


def get_db() -> sessionmaker:
    try:
        engine = get_engine()
        Session = sessionmaker(autocommit=False, autoflush=False, bind=engine)
        db = Session()
        yield db
    finally:
        db.close()


# def get_db():
#     engine = create_engine("sqlite:///./data.db", connect_args={"check_same_thread": False})
#     SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
#     db = SessionLocal()
#     try:
#         yield db
#     finally:
#         db.close()


def init_database():
    engine = get_engine()
    Base.metadata.create_all(bind=engine)