import os
from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
from dotenv import load_dotenv
from core.config import settings
from urllib.parse import quote_from_bytes
load_dotenv()
DB_USER = os.getenv("DB_USER")
DB_PASSWORD = os.getenv("DB_PASSWORD", "").encode("utf-8")
DB_PASSWORD = quote_from_bytes(DB_PASSWORD)
DB_NAME = os.getenv("DB_NAME")

DATABASE_URL = f"mysql+pymysql://{DB_USER}:{DB_PASSWORD}@localhost/{DB_NAME}"

engine = create_engine(DATABASE_URL, pool_pre_ping=True)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
Base = declarative_base()

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