components/autofill/core/browser/credit_card.h

// Copyright 2013 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 COMPONENTS_AUTOFILL_CORE_BROWSER_CREDIT_CARD_H_
#define COMPONENTS_AUTOFILL_CORE_BROWSER_CREDIT_CARD_H_

#include <iosfwd>
#include <string>
#include <vector>

#include "base/compiler_specific.h"
#include "base/strings/string16.h"
#include "components/autofill/core/browser/autofill_data_model.h"

namespace autofill {

// A form group that stores credit card information.
class CreditCard : public AutofillDataModel {
 public:
  CreditCard(const std::string& guid, const std::string& origin);

  // For use in STL containers.
  CreditCard();
  CreditCard(const CreditCard& credit_card);
  ~CreditCard() override;

  // Returns a version of |number| that has any separator characters removed.
  static const base::string16 StripSeparators(const base::string16& number);

  // The user-visible type of the card, e.g. 'Mastercard'.
  static base::string16 TypeForDisplay(const std::string& type);

  // The ResourceBundle ID for the appropriate credit card image.
  static int IconResourceId(const std::string& type);

  // Returns the internal representation of credit card type corresponding to
  // the given |number|.  The credit card type is determined purely according to
  // the Issuer Identification Number (IIN), a.k.a. the "Bank Identification
  // Number (BIN)", which is parsed from the relevant prefix of the |number|.
  // This function performs no additional validation checks on the |number|.
  // Hence, the returned type for both the valid card "4111-1111-1111-1111" and
  // the invalid card "4garbage" will be Visa, which has an IIN of 4.
  static const char* GetCreditCardType(const base::string16& number);

  // FormGroup:
  void GetMatchingTypes(const base::string16& text,
                        const std::string& app_locale,
                        ServerFieldTypeSet* matching_types) const override;
  base::string16 GetRawInfo(ServerFieldType type) const override;
  void SetRawInfo(ServerFieldType type, const base::string16& value) override;
  base::string16 GetInfo(const AutofillType& type,
                         const std::string& app_locale) const override;
  bool SetInfo(const AutofillType& type,
               const base::string16& value,
               const std::string& app_locale) override;

  // Credit card preview summary, for example: ******1234, Exp: 01/2020
  const base::string16 Label() const;

  // Special method to set value for HTML5 month input type.
  void SetInfoForMonthInputType(const base::string16& value);

  // The number altered for display, for example: ******1234
  base::string16 ObfuscatedNumber() const;
  // The last four digits of the credit card number.
  base::string16 LastFourDigits() const;
  // The user-visible type of the card, e.g. 'Mastercard'.
  base::string16 TypeForDisplay() const;
  // A label for this credit card formatted as 'Cardname - 2345'.
  base::string16 TypeAndLastFourDigits() const;

  const std::string& type() const { return type_; }

  int expiration_month() const { return expiration_month_; }
  int expiration_year() const { return expiration_year_; }

  // For use in STL containers.
  void operator=(const CreditCard& credit_card);

  // If the card numbers for |this| and |imported_card| match, and merging the
  // two wouldn't result in unverified data overwriting verified data,
  // overwrites |this| card's data with the data in |credit_card|.
  // Returns true if the card numbers match, false otherwise.
  bool UpdateFromImportedCard(const CreditCard& imported_card,
                              const std::string& app_locale) WARN_UNUSED_RESULT;

  // Comparison for Sync.  Returns 0 if the credit card is the same as |this|,
  // or < 0, or > 0 if it is different.  The implied ordering can be used for
  // culling duplicates.  The ordering is based on collation order of the
  // textual contents of the fields.
  // GUIDs, origins, labels, and unique IDs are not compared, only the values of
  // the credit cards themselves.
  int Compare(const CreditCard& credit_card) const;

  // Used by tests.
  bool operator==(const CreditCard& credit_card) const;
  bool operator!=(const CreditCard& credit_card) const;

  // Returns true if there are no values (field types) set.
  bool IsEmpty(const std::string& app_locale) const;

  // Returns true if all field types have valid values set.
  bool IsComplete() const;

  // Returns true if all field types have valid values set and the card is not
  // expired.
  bool IsValid() const;

  // Returns the credit card number.
  const base::string16& number() const { return number_; }

 private:
  // FormGroup:
  void GetSupportedTypes(ServerFieldTypeSet* supported_types) const override;

  // The month and year are zero if not present.
  int Expiration4DigitYear() const { return expiration_year_; }
  int Expiration2DigitYear() const { return expiration_year_ % 100; }
  base::string16 ExpirationMonthAsString() const;
  base::string16 Expiration4DigitYearAsString() const;
  base::string16 Expiration2DigitYearAsString() const;

  // Sets |expiration_month_| to the integer conversion of |text|.
  void SetExpirationMonthFromString(const base::string16& text,
                                    const std::string& app_locale);

  // Sets |expiration_year_| to the integer conversion of |text|.
  void SetExpirationYearFromString(const base::string16& text);

  // Sets |number_| to |number| and computes the appropriate card |type_|.
  void SetNumber(const base::string16& number);

  // These setters verify that the month and year are within appropriate
  // ranges.
  void SetExpirationMonth(int expiration_month);
  void SetExpirationYear(int expiration_year);

  base::string16 number_;  // The credit card number.
  base::string16 name_on_card_;  // The cardholder's name.
  std::string type_;  // The type of the card.

  // These members are zero if not present.
  int expiration_month_;
  int expiration_year_;
};

// So we can compare CreditCards with EXPECT_EQ().
std::ostream& operator<<(std::ostream& os, const CreditCard& credit_card);

// The string identifiers for credit card icon resources.
extern const char* const kAmericanExpressCard;
extern const char* const kDinersCard;
extern const char* const kDiscoverCard;
extern const char* const kGenericCard;
extern const char* const kJCBCard;
extern const char* const kMasterCard;
extern const char* const kUnionPay;
extern const char* const kVisaCard;

}  // namespace autofill

#endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_CREDIT_CARD_H_