"""
Configuración runtime via variables de entorno.
Toda la configuración pasa por aquí — no leas env vars dispersos en otros módulos.
"""

from pydantic import Field
from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    model_config = SettingsConfigDict(env_file=None, case_sensitive=True)

    DATABASE_URL: str = Field(..., description="Connection string runtime de la app")
    MIGRATION_DATABASE_URL: str = Field(
        default="",
        description="Connection string para Alembic; si vacío, usa DATABASE_URL",
    )

    LOG_LEVEL: str = "INFO"
    CORRELATION_ID_HEADER: str = "X-Correlation-ID"

    OPENAPI_REQUIRE_AUTH: bool = False
    KEYCLOAK_ISSUER: str = ""

    STATIC_DEMO_PATH: str = "/app/static/demo"

    @property
    def migration_url(self) -> str:
        return self.MIGRATION_DATABASE_URL or self.DATABASE_URL


settings = Settings()