database.py

"""
Configuração do banco de dados SQLAlchemy.
"""
from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
import os

# URL do banco de dados
DATABASE_URL = os.getenv("DATABASE_URL", "sqlite:///./fluxi.db")

# Criar engine
engine = create_engine(
    DATABASE_URL,
    connect_args={"check_same_thread": False} if "sqlite" in DATABASE_URL else {},
    echo=False
)

# Session local
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

# Base para os modelos
Base = declarative_base()


def get_db():
    """
    Dependency para obter sessão do banco de dados.
    """
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()


def criar_tabelas():
    """
    Cria todas as tabelas no banco de dados.
    """
    Base.metadata.create_all(bind=engine)