// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef PaymentsValidators_h
#define PaymentsValidators_h

#include "modules/ModulesExport.h"
#include "public/platform/modules/payments/payment_request.mojom-blink.h"
#include "wtf/Allocator.h"
#include "wtf/text/WTFString.h"

namespace blink {

class MODULES_EXPORT PaymentsValidators final {
  STATIC_ONLY(PaymentsValidators);

 public:
  // The most common identifiers are three-letter alphabetic codes as defined by
  // [ISO4217] (for example, "USD" for US Dollars) however any string of at most
  // 2048 characters is considered valid. Returns false if currency |code| is
  // too long (greater than 2048).
  static bool isValidCurrencyCodeFormat(const String& code,
                                        String* optionalErrorMessage);

  // Returns true if |amount| is a valid currency code as defined in ISO 20022
  // CurrencyAnd30Amount.
  static bool isValidAmountFormat(const String& amount,
                                  String* optionalErrorMessage);

  // Returns true if |code| is a valid ISO 3166 country code.
  static bool isValidCountryCodeFormat(const String& code,
                                       String* optionalErrorMessage);

  // Returns true if |code| is a valid ISO 639 language code.
  static bool isValidLanguageCodeFormat(const String& code,
                                        String* optionalErrorMessage);

  // Returns true if |code| is a valid ISO 15924 script code.
  static bool isValidScriptCodeFormat(const String& code,
                                      String* optionalErrorMessage);

  // Returns true if the payment address is valid:
  //  - Has a valid region code
  //  - Has a valid language code, if any.
  //  - Has a valid script code, if any.
  // A script code should be present only if language code is present.
  static bool isValidShippingAddress(const mojom::blink::PaymentAddressPtr&,
                                     String* optionalErrorMessage);

  // Returns false if |error| is too long (greater than 2048).
  static bool isValidErrorMsgFormat(const String& code,
                                    String* optionalErrorMessage);
};

}  // namespace blink

#endif  // PaymentsValidators_h