# backend/db/session.py
import os
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from urllib.parse import quote_plus
from dotenv import load_dotenv

# Cargar variables de entorno (.env) desde backend/.env
load_dotenv(dotenv_path=os.path.join(os.path.dirname(__file__), "..", ".env"))

DB_USER = os.getenv("DB_USER")
DB_PASSWORD = quote_plus(os.getenv("DB_PASSWORD"))
DB_HOST = os.getenv("DB_HOST")
DB_PORT = os.getenv("DB_PORT", "55455")
DB_NAME = os.getenv("DB_NAME")

DATABASE_URL = (
    f"postgresql+psycopg2://{DB_USER}:{DB_PASSWORD}@{DB_HOST}:{DB_PORT}/{DB_NAME}"
)

# Crear engine
engine = create_engine(
    DATABASE_URL,
    pool_size=5,
    max_overflow=10,
    future=True,
    echo=False,  # pon True para ver las queries en consola
)

# Fábrica de sesiones
SessionLocal = sessionmaker(
    bind=engine,
    autoflush=False,
    expire_on_commit=False,
    future=True,
)