// Copyright (c) 2011 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_BROWSER_AUTOFILL_COUNTRY_H_
#define COMPONENTS_AUTOFILL_BROWSER_AUTOFILL_COUNTRY_H_

#include <string>
#include <vector>

#include "base/basictypes.h"
#include "base/string16.h"

// The minimal required fields for an address to be complete for a given
// country.
enum AddressRequiredFields {
  ADDRESS_REQUIRES_CITY  = 1 << 0,
  ADDRESS_REQUIRES_STATE = 1 << 1,
  ADDRESS_REQUIRES_ZIP   = 1 << 2,

  // Composite versions (for data).
  ADDRESS_REQUIRES_CITY_STATE =
    ADDRESS_REQUIRES_CITY | ADDRESS_REQUIRES_STATE,
  ADDRESS_REQUIRES_STATE_ZIP =
    ADDRESS_REQUIRES_STATE | ADDRESS_REQUIRES_ZIP,
  ADDRESS_REQUIRES_CITY_ZIP =
    ADDRESS_REQUIRES_CITY |ADDRESS_REQUIRES_ZIP,
  ADDRESS_REQUIRES_CITY_STATE_ZIP =
    ADDRESS_REQUIRES_CITY | ADDRESS_REQUIRES_STATE | ADDRESS_REQUIRES_ZIP,

  // Policy for countries that don't have city, state or zip requirements.
  ADDRESS_REQUIRES_ADDRESS_LINE_1_ONLY = 0,

  // Policy for countries for which we do not have information about valid
  // address format.
  ADDRESS_REQUIREMENTS_UNKNOWN = ADDRESS_REQUIRES_CITY_STATE_ZIP,
};

// Stores data associated with a country. Strings are localized to the app
// locale.
class AutofillCountry {
 public:
  // Returns country data corresponding to the two-letter ISO code
  // |country_code|.
  AutofillCountry(const std::string& country_code, const std::string& locale);
  ~AutofillCountry();

  // Fills |country_codes| with a list of the available countries' codes.
  static void GetAvailableCountries(
      std::vector<std::string>* country_codes);

  // Returns the likely country code for |locale|, or "US" as a fallback if no
  // mapping from the locale is available.
  static const std::string CountryCodeForLocale(const std::string& locale);

  // Returns the country code corresponding to |country|, which should be a
  // country code or country name localized to |locale|.  This function can
  // be expensive so use judiciously.
  static const std::string GetCountryCode(const string16& country,
                                          const std::string& locale);

  const std::string country_code() const { return country_code_; }
  const string16 name() const { return name_; }
  const string16 postal_code_label() const { return postal_code_label_; }
  const string16 state_label() const { return state_label_; }

  // City is expected in a complete address for this country.
  bool requires_city() const {
    return (address_required_fields_ & ADDRESS_REQUIRES_CITY) != 0;
  }

  // State is expected in a complete address for this country.
  bool requires_state() const {
    return (address_required_fields_ & ADDRESS_REQUIRES_STATE) != 0;
  }

  // Zip is expected in a complete address for this country.
  bool requires_zip() const {
    return (address_required_fields_ & ADDRESS_REQUIRES_ZIP) != 0;
  }

 private:
  AutofillCountry(const std::string& country_code,
                  const string16& name,
                  const string16& postal_code_label,
                  const string16& state_label);

  // The two-letter ISO-3166 country code.
  std::string country_code_;

  // The country's name, localized to the app locale.
  string16 name_;

  // The localized label for the postal code (or zip code) field.
  string16 postal_code_label_;

  // The localized label for the state (or province, district, etc.) field.
  string16 state_label_;

  // Address requirement field codes for the country.
  AddressRequiredFields address_required_fields_;

  DISALLOW_COPY_AND_ASSIGN(AutofillCountry);
};

#endif  // COMPONENTS_AUTOFILL_BROWSER_AUTOFILL_COUNTRY_H_