import os
from dotenv import load_dotenv
from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker

load_dotenv()

user = os.getenv("DB_USER")
password = os.getenv("DB_PASSWORD")
host = os.getenv("DB_HOST")
port = os.getenv("DB_PORT")
db_name = os.getenv("DB_NAME")
if not host or host == "localhost":
    SQLALCHEMY_DATABASE_URL = "sqlite:///./sql_app.db"
    # El argumento connect_args es necesario solo para SQLite
    engine = create_engine(
        SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False}
    )
else:
    SQLALCHEMY_DATABASE_URL = f"postgresql://{user}:{password}@{host}:{port}/{db_name}"
    engine = create_engine(SQLALCHEMY_DATABASE_URL)

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