export type ProfileQuestionAnswerValue = string | number | boolean | null;

export interface EditableProfileQuestion {
  id: number;
  admin_only_edit: boolean;
  can_edit: boolean;
}

export interface DependentProfileQuestion {
  id: number;
  depends_on_question_id: number | null;
  depends_on_value: string | null;
}

export const answerToComparable = (value: ProfileQuestionAnswerValue): string | null => {
  if (value === null || value === undefined) {
    return null;
  }

  if (typeof value === 'boolean') {
    return value ? 'true' : 'false';
  }

  return String(value);
};

export const canEditProfileQuestion = (
  question: EditableProfileQuestion,
  allowAdminManagedEdit = false
): boolean => {
  if (allowAdminManagedEdit) {
    return true;
  }

  if (!question.can_edit) {
    return false;
  }

  if (question.admin_only_edit) {
    return false;
  }

  return true;
};

export const isProfileQuestionVisible = <TQuestion extends DependentProfileQuestion>(
  question: TQuestion,
  questionsById: Map<number, TQuestion>,
  answers: Record<number, ProfileQuestionAnswerValue>
): boolean => {
  if (!question.depends_on_question_id) {
    return true;
  }

  const parentQuestion = questionsById.get(question.depends_on_question_id);
  if (!parentQuestion) {
    return true;
  }

  const parentAnswer = answerToComparable(answers[parentQuestion.id] ?? null);
  if (question.depends_on_value === null || question.depends_on_value === undefined) {
    return parentAnswer !== null && parentAnswer !== '';
  }

  return parentAnswer === question.depends_on_value;
};