interface ConfigFromBackend {
  commitTime: string;
  contactEmail: string;
  contactPhone: string;
  position: string;
}

interface MyWindow extends Window {
  APP_CONFIG?: ConfigFromBackend;
}

declare const window: MyWindow;

const confString = (input: string | undefined, def: string): string => {
  if (
    input === undefined ||
    (typeof input === "string" && input.trim() === "")
  ) {
    return def;
  }

  return input;
};

export const BUILD_TIMESTAMP: Date = window.APP_CONFIG?.commitTime
  ? new Date(window.APP_CONFIG.commitTime)
  : new Date();

export const CONTACT_EMAIL = confString(
  window.APP_CONFIG?.contactEmail,
  typeof import.meta.env.VITE_CONTACT_EMAIL === "string"
    ? import.meta.env.VITE_CONTACT_EMAIL
    : "",
);

export const CONTACT_PHONE = confString(
  window.APP_CONFIG?.contactPhone,
  typeof import.meta.env.VITE_CONTACT_PHONE === "string"
    ? import.meta.env.VITE_CONTACT_PHONE
    : "",
);

export const POSITION = confString(
  window.APP_CONFIG?.position,
  typeof import.meta.env.VITE_POSITION === "string"
    ? import.meta.env.VITE_POSITION
    : "",
);