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backend/
├── .env              # Valores reais (NAO COMMITAR)
├── .env.example      # Template (commitar)
└── .env.test         # Valores para testes (opcional)

# Database
DATABASE_URL=postgresql://user:password@localhost:5432/dbname
REDIS_URL=redis://localhost:6379/0

# APIs Externas
GOOGLE_MAPS_API_KEY=
BRASIL_API_KEY=
TWILIO_ACCOUNT_SID=
TWILIO_AUTH_TOKEN=

# Agente IA
GEMINI_API_KEY=
OPENAI_API_KEY=

# Aplicacao
SECRET_KEY=
DEBUG=false
LOG_LEVEL=INFO

# .gitignore deve conter:
.env
.env.local
*.key
*.pem
credentials.json

# Verificar se .env esta sendo tracked
git status | grep .env

# Se aparecer, remover do tracking
git rm --cached .env

from dotenv import load_dotenv
import os

load_dotenv()

DATABASE_URL = os.getenv("DATABASE_URL")
API_KEY = os.getenv("API_KEY")

services:
  backend:
    env_file:
      - .env

# Carregar e executar
source .env && python script.py

# Ou com export
export $(cat .env | xargs) && python script.py

# backend/app/config.py
from pydantic_settings import BaseSettings

class Settings(BaseSettings):
    DATABASE_URL: str
    REDIS_URL: str
    GEMINI_API_KEY: str
    DEBUG: bool = False

    class Config:
        env_file = ".env"

settings = Settings()  # Valida na inicializacao

# Verificar variaveis carregadas
env | grep -E "DATABASE|REDIS|API"

# Validar .env existe
test -f .env && echo "OK" || echo "FALTA .env"

# Copiar template
cp .env.example .env