/**
 * Utility functions for formatting database enums into user-friendly text
 */

// Custom mappings for specific enum values that need special formatting
const ENUM_MAPPINGS: Record<string, string> = {
  // HR/Employment related
  SALARY_COMPENSATION: "Salary & Compensation",
  CONTRACT_HOURS: "Contract & Hours",
  SCHEDULE_HOURS: "Schedule & Hours",
  LEAVE_VACATION: "Leave & Vacation",
  SICK_LEAVE_RECOVERY: "Sick Leave & Recovery",
  WORKWEAR_STAFF_PASS: "Workwear & Staff Pass",
  TEAM_CONTACTS: "Team & Contacts",
  PERSONAL_QUESTIONS: "Personal Questions",
  PERSONALQUESTIONS: "Personal Questions",

  // Process related
  ONBOARDING: "Onboarding",
  OFFBOARDING: "Offboarding",

  // Access related
  ACCESS_LOGIN: "Access & Login",

  // Technical/Other
  UNRECOGNIZED_OTHER: "General Inquiry",

  // Add more mappings as needed
};

/**
 * Formats a database enum value into user-friendly text
 * @param enumValue - The raw enum value from the database
 * @returns Formatted string or null if input is empty
 */
export function formatEnumValue(
  enumValue: string | null | undefined
): string | null {
  if (!enumValue) return null;

  // Check for custom mapping first
  if (ENUM_MAPPINGS[enumValue]) {
    return ENUM_MAPPINGS[enumValue];
  }

  // Fallback: convert snake_case to Title Case
  return enumValue
    .replace(/_/g, " ")
    .toLowerCase()
    .replace(/\b\w/g, (l) => l.toUpperCase());
}

/**
 * Formats a category enum specifically for display
 * @param category - The category enum value
 * @returns Formatted category name or null if empty
 */
export function formatCategory(
  category: string | null | undefined
): string | null {
  return formatEnumValue(category);
}

/**
 * Formats an array of enum values into user-friendly text
 * @param enumValues - Array of enum values
 * @returns Array of formatted values (filters out null/undefined)
 */
export function formatEnumArray(
  enumValues: (string | null | undefined)[]
): string[] {
  return enumValues
    .map((value) => formatEnumValue(value))
    .filter((value): value is string => Boolean(value));
}