/**
 * A configuration model that dictates the configuration for the card form.
 */
export interface CardFormConfiguration {
  /**
   * A boolean value indicating whether the cardholder's name field
   * is required in the card form.
   *
   * If `true`, the cardholder's name must be collected and provided.
   * If `false`, the cardholder's name is optional.
   */
  isCardHolderNameRequired?: boolean;

  /**
   * A map of custom validation rules for the card holder name field.
   * The key represents the error message to display when validation fails,
   * and the value represents the regex pattern string.
   *
   * Example:
   * ```typescript
   * {
   *   "Card holder name must contain only letters and spaces": "^[a-zA-Z\\s]+$",
   *   "Card holder name must be between 2 and 50 characters": "^.{2,50}$"
   * }
   * ```
   */
  cardHolderValidations?: Record<string, string>;

  /**
   * A boolean value indicating if MoneyHash should validate the card number.
   *
   * If `true`, MoneyHash will validate the entered card number.
   * If `false`, MoneyHash will not validate the entered card number.
   */
  enableCardNumberValidation?: boolean;
}

/**
 * Creates a `CardFormConfiguration` from a partial JSON object.
 *
 * This allows the user to set only one of the configurations and the other
 * one will default to `false`.
 *
 * @param json - The JSON object to parse.
 * @returns A new instance of `CardFormConfiguration`.
 */
export function cardFormConfigurationFromJson(
  json: Partial<Record<string, any>>
): CardFormConfiguration {
  return {
    isCardHolderNameRequired: json.isCardHolderNameRequired ?? false,
    cardHolderValidations: json.cardHolderValidations ?? {},
    enableCardNumberValidation: json.enableCardNumberValidation ?? true,
  };
}

/**
 * Converts a `CardFormConfiguration` to a JSON object.
 *
 * This ensures that both properties are always included in the output, even if
 * only one of them was set by the user. If not explicitly set, it will be `false`.
 *
 * @param config - The `CardFormConfiguration` instance to convert.
 * @returns A JSON representation of the configuration.
 */
export function cardFormConfigurationToJson(
  config: Partial<CardFormConfiguration>
): Record<string, any> {
  return {
    isCardHolderNameRequired: config.isCardHolderNameRequired ?? false,
    cardHolderValidations: config.cardHolderValidations ?? {},
    enableCardNumberValidation: config.enableCardNumberValidation ?? true,
  };
}