from pydantic import Field
from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    """Application settings following 12-factor app principles."""

    # Server settings
    host: str = Field(default="0.0.0.0", alias="HOST")
    port: int = Field(default=8000, alias="PORT")
    debug: bool = Field(default=False, alias="DEBUG")
    log_level: str = Field(default="INFO", alias="LOG_LEVEL")

    # Database settings
    oracle_user: str = Field(alias="ORACLE_USER")
    oracle_password: str = Field(alias="ORACLE_PASSWORD")
    oracle_dsn: str = Field(alias="ORACLE_DSN")

    # Sentry settings
    sentry_dsn: str | None = Field(default=None, alias="SENTRY_DSN")

    # Datadog settings
    dd_service: str = Field(default="loapi", alias="DD_SERVICE")
    dd_env: str = Field(default="development", alias="DD_ENV")
    dd_version: str = Field(default="1.0.0", alias="DD_VERSION")

    class Config:
        env_file = ".env"
        case_sensitive = False


settings = Settings()  # type:ignore[call-arg]