export const buildFullName = ({ firstName, lastName, displayName } = {}) => {
  const first =
    typeof firstName === "string" && firstName.trim().length > 0
      ? firstName.trim()
      : "";
  const last =
    typeof lastName === "string" && lastName.trim().length > 0
      ? lastName.trim()
      : "";
  const nameFromParts = [first, last].filter(Boolean).join(" ").trim();
  if (nameFromParts) return nameFromParts;

  const fallbackDisplay =
    typeof displayName === "string" && displayName.trim().length > 0
      ? displayName.trim()
      : "";
  return fallbackDisplay || null;
};

export const getArtistDisplayName = (source, fallback = "") => {
  if (!source) return fallback;
  const rawUserName =
    typeof source?.userName === "string" ? source.userName.trim() : "";
  if (rawUserName) return rawUserName;

  const nameFromParts = buildFullName({
    firstName: source?.firstName,
    lastName: source?.lastName,
    displayName: source?.displayName,
  });

  if (nameFromParts) return nameFromParts;
  return fallback;
};

export const getUserPreferredArtistName = (user) => {
  const display = getArtistDisplayName(user, "");
  return display || null;
};