from pydantic_settings import BaseSettings
from functools import lru_cache


class Settings(BaseSettings):
    # Database
    DATABASE_URL: str = "postgresql://whatsapp_admin:password@localhost:5432/whatsapp_central"

    # Redis
    REDIS_URL: str = "redis://localhost:6379"

    # JWT
    JWT_SECRET: str = "change-me-in-production"
    JWT_ALGORITHM: str = "HS256"
    JWT_ACCESS_TOKEN_EXPIRE_MINUTES: int = 60
    JWT_REFRESH_TOKEN_EXPIRE_DAYS: int = 7

    # WhatsApp Core
    WHATSAPP_CORE_URL: str = "http://localhost:3001"

    # Flow Engine
    FLOW_ENGINE_URL: str = "http://localhost:8001"

    # Integrations
    INTEGRATIONS_URL: str = "http://localhost:8002"

    # CORS
    CORS_ORIGINS: str = "http://localhost:5173,http://localhost:3000"

    class Config:
        env_file = ".env"


@lru_cache
def get_settings() -> Settings:
    return Settings()