/**
 * Utility functions for currency/decimal formatting and parsing
 */

/**
 * Formats a decimal number for database storage (2 decimal places)
 * @param value - The number to format
 * @returns Formatted string with 2 decimal places, or null if input is null
 */
export function formatDecimalForDb(value: number | null): string | null {
  if (value === null) {
    return null;
  }

  return (Math.round(value * 100) / 100).toFixed(2);
}

/**
 * Formats a decimal number for database storage (non-nullable version)
 * @param value - The number to format
 * @returns Formatted string with 2 decimal places
 */
export function formatDecimalForDbRequired(value: number): string {
  return (Math.round(value * 100) / 100).toFixed(2);
}

/**
 * Normalizes decimal input by replacing comma with period
 * @param value - Input string
 * @returns Normalized string with period as decimal separator
 */
export function normalizeDecimalInput(value: string): string {
  return value.replace(/\s/g, "").replace(",", ".");
}

/**
 * Formats a limit/balance input for display
 * @param value - The number to format
 * @returns Formatted string or empty string
 */
export function formatLimitInput(value?: number | null): string {
  if (value === null || value === undefined || Number.isNaN(value)) {
    return "";
  }

  return (Math.round(value * 100) / 100).toFixed(2);
}

/**
 * Formats an initial balance input for display (defaults to "0.00")
 * @param value - The number to format
 * @returns Formatted string with default "0.00"
 */
export function formatInitialBalanceInput(value?: number | null): string {
  if (value === null || value === undefined || Number.isNaN(value)) {
    return "0.00";
  }

  return (Math.round(value * 100) / 100).toFixed(2);
}