// 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_AUTOFILL_PROFILE_H_
#define COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_PROFILE_H_

#include <stddef.h>

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

#include "base/compiler_specific.h"
#include "base/memory/weak_ptr.h"
#include "base/strings/string16.h"
#include "base/time/time.h"
#include "components/autofill/core/browser/address.h"
#include "components/autofill/core/browser/autofill_data_model.h"
#include "components/autofill/core/browser/autofill_type.h"
#include "components/autofill/core/browser/contact_info.h"
#include "components/autofill/core/browser/phone_number.h"
#include "components/autofill/core/browser/proto/server.pb.h"

namespace autofill {

struct AutofillMetadata;

// A collection of FormGroups stored in a profile.  AutofillProfile also
// implements the FormGroup interface so that owners of this object can request
// form information from the profile, and the profile will delegate the request
// to the requested form group type.
class AutofillProfile : public AutofillDataModel {
 public:
  enum RecordType {
    // A profile stored and editable locally.
    LOCAL_PROFILE,
    // A profile synced down from the server. These are read-only locally.
    SERVER_PROFILE,
  };

  enum ValidityState {
    // The field has not been validated.
    UNVALIDATED = 0,
    // The field is empty.
    EMPTY = 1,
    // The field is valid.
    VALID = 2,
    // The field is invalid.
    INVALID = 3,
    // The validation for the field is unsupported.
    UNSUPPORTED = 4,
  };

  enum ValidationSource {
    // The validity state is according to the client validation.
    CLIENT = 0,
    // The validity state is according to the server validation.
    SERVER = 1,
  };

  AutofillProfile(const std::string& guid, const std::string& origin);

  // Server profile constructor. The type must be SERVER_PROFILE (this serves
  // to differentiate this constructor). |server_id| can be empty. If empty,
  // callers should invoke GenerateServerProfileIdentifier after setting data.
  AutofillProfile(RecordType type, const std::string& server_id);

  // For use in STL containers.
  AutofillProfile();
  AutofillProfile(const AutofillProfile& profile);
  ~AutofillProfile() override;

  AutofillProfile& operator=(const AutofillProfile& profile);

  // AutofillDataModel:
  AutofillMetadata GetMetadata() const override;
  bool SetMetadata(const AutofillMetadata metadata) override;
  // Returns whether the profile is deletable: if it is not verified and has not
  // been used for longer than |kDisusedAddressDeletionTimeDelta|.
  bool IsDeletable() const override;

  // FormGroup:
  void GetMatchingTypes(const base::string16& text,
                        const std::string& app_locale,
                        ServerFieldTypeSet* matching_types) const override;

  void GetMatchingTypesAndValidities(
      const base::string16& text,
      const std::string& app_locale,
      ServerFieldTypeSet* matching_types,
      std::map<ServerFieldType, AutofillProfile::ValidityState>*
          matching_types_validities) const;

  base::string16 GetRawInfo(ServerFieldType type) const override;
  void SetRawInfo(ServerFieldType type, const base::string16& value) override;

  void GetSupportedTypes(ServerFieldTypeSet* supported_types) const override;

  // How this card is stored.
  RecordType record_type() const { return record_type_; }
  void set_record_type(RecordType type) { record_type_ = type; }

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

  // Returns true if the |type| of data in this profile is present, but invalid.
  // Otherwise returns false.
  bool IsPresentButInvalid(ServerFieldType type) const;

  // Comparison for Sync.  Returns 0 if the profile 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. Full profile comparison, comparison
  // includes multi-valued fields.
  //
  // GUIDs, origins, and language codes are not compared, only the contents
  // themselves.
  int Compare(const AutofillProfile& profile) const;

  // Same as operator==, but ignores differences in origin.
  bool EqualsSansOrigin(const AutofillProfile& profile) const;

  // Same as operator==, but ignores differences in guid and cares about
  // differences in usage stats.
  bool EqualsForSyncPurposes(const AutofillProfile& profile) const;

  bool EqualsForUpdatePurposes(const AutofillProfile& profile) const;

  // Compares the values of kSupportedTypesByClientForValidation fields.
  bool EqualsForClientValidationPurpose(const AutofillProfile& profile) const;

  // Same as operator==, but cares about differences in usage stats.
  bool EqualsIncludingUsageStatsForTesting(
      const AutofillProfile& profile) const;

  // Equality operators compare GUIDs, origins, language code, and the contents
  // in the comparison. Usage metadata (use count, use date, modification date)
  // are NOT compared.
  bool operator==(const AutofillProfile& profile) const;
  virtual bool operator!=(const AutofillProfile& profile) const;

  // Returns true if the data in this AutofillProfile is a subset of the data in
  // |profile|.
  bool IsSubsetOf(const AutofillProfile& profile,
                  const std::string& app_locale) const;

  // Like IsSubsetOf, but only considers the types present in |types|.
  bool IsSubsetOfForFieldSet(const AutofillProfile& profile,
                             const std::string& app_locale,
                             const ServerFieldTypeSet& types) const;

  // Overwrites the data of |this| profile with data from the given |profile|.
  // Expects that the profiles have the same guid.
  void OverwriteDataFrom(const AutofillProfile& profile);

  // Merges the data from |this| profile and the given |profile| into |this|
  // profile. Expects that |this| and |profile| have already been deemed
  // mergeable by an AutofillProfileComparator.
  bool MergeDataFrom(const AutofillProfile& profile,
                     const std::string& app_locale);

  // Saves info from |profile| into |this|, provided |this| and |profile| do not
  // have any direct conflicts (i.e. data is present but different). Will not
  // make changes if |this| is verified and |profile| is not. Returns true if
  // |this| and |profile| are similar.
  bool SaveAdditionalInfo(const AutofillProfile& profile,
                          const std::string& app_locale);

  // Returns |true| if |type| accepts multi-values.
  static bool SupportsMultiValue(ServerFieldType type);

  // Creates a differentiating label for each of the |profiles|.
  // Labels consist of the minimal differentiating combination of:
  // 1. Full name.
  // 2. Address.
  // 3. E-mail.
  // 4. Phone.
  // 5. Company name.
  static void CreateDifferentiatingLabels(
      const std::vector<AutofillProfile*>& profiles,
      const std::string& app_locale,
      std::vector<base::string16>* labels);

  // Creates inferred labels for |profiles|, according to the rules above and
  // stores them in |created_labels|. If |suggested_fields| is not NULL, the
  // resulting label fields are drawn from |suggested_fields|, except excluding
  // |excluded_field|. Otherwise, the label fields are drawn from a default set,
  // and |excluded_field| is ignored; by convention, it should be of
  // |UNKNOWN_TYPE| when |suggested_fields| is NULL. Each label includes at
  // least |minimal_fields_shown| fields, if possible.
  static void CreateInferredLabels(
      const std::vector<AutofillProfile*>& profiles,
      const std::vector<ServerFieldType>* suggested_fields,
      ServerFieldType excluded_field,
      size_t minimal_fields_shown,
      const std::string& app_locale,
      std::vector<base::string16>* labels);

  // Builds inferred label from the first |num_fields_to_include| non-empty
  // fields in |label_fields|. Uses as many fields as possible if there are not
  // enough non-empty fields.
  base::string16 ConstructInferredLabel(const ServerFieldType* label_fields,
                                        const size_t label_fields_size,
                                        size_t num_fields_to_include,
                                        const std::string& app_locale) const;

  const std::string& language_code() const { return language_code_; }
  void set_language_code(const std::string& language_code) {
    language_code_ = language_code;
  }

  // Nonempty only when type() == SERVER_PROFILE. base::kSHA1Length bytes long.
  // Not necessarily valid UTF-8.
  const std::string& server_id() const { return server_id_; }

  // Creates an identifier and saves it as |server_id_|. Only used for
  // server credit cards. The server doesn't attach an identifier so Chrome
  // creates its own. The ID is a hash of the data contained in the profile.
  void GenerateServerProfileIdentifier();

  // Logs the number of days since the profile was last used, records its
  // use and updates |previous_use_date_| to the last value of |use_date_|.
  void RecordAndLogUse();

  const base::Time& previous_use_date() const { return previous_use_date_; }
  void set_previous_use_date(const base::Time& time) {
    previous_use_date_ = time;
  }

  // Valid only when |record_type()| == |SERVER_PROFILE|.
  bool has_converted() const { return has_converted_; }
  void set_has_converted(bool has_converted) { has_converted_ = has_converted; }

  // Returns the validity state of the specified autofill type.
  ValidityState GetValidityState(ServerFieldType type,
                                 ValidationSource source) const;

  // Sets the validity state of the specified autofill type.
  // This should only be called from autofill profile validtion API or in tests.
  void SetValidityState(ServerFieldType type,
                        ValidityState validity,
                        ValidationSource validation_source) const;

  // Update the validity map based on the server side validity maps from the
  // prefs.
  void UpdateServerValidityMap(const ProfileValidityMap& validity_states) const;

  // Returns whether autofill does the validation of the specified |type|.
  static bool IsClientValidationSupportedForType(ServerFieldType type);

  // Returns the bitfield value representing the validity state of this profile
  // based on client validation source.
  int GetClientValidityBitfieldValue() const;

  // Sets the validity state of the profile based on the specified
  // |bitfield_value| based on client validation source.
  void SetClientValidityFromBitfieldValue(int bitfield_value) const;

  // Returns true if type is a phone type and it's invalid, either explicitly,
  // or by looking at its components.
  bool IsAnInvalidPhoneNumber(ServerFieldType type) const;

  const std::map<ServerFieldType, ValidityState>& GetServerValidityMap() const {
    return server_validity_states_;
  }

  bool is_client_validity_states_updated() const {
    return is_client_validity_states_updated_;
  }

  void set_is_client_validity_states_updated(
      bool is_client_validity_states_updated) const {
    is_client_validity_states_updated_ = is_client_validity_states_updated;
  }

  base::WeakPtr<const AutofillProfile> GetWeakPtr() const {
    return weak_ptr_factory_.GetWeakPtr();
  }

 private:
  typedef std::vector<const FormGroup*> FormGroupList;

  // FormGroup:
  base::string16 GetInfoImpl(const AutofillType& type,
                             const std::string& app_locale) const override;
  bool SetInfoImpl(const AutofillType& type,
                   const base::string16& value,
                   const std::string& app_locale) override;

  // Creates inferred labels for |profiles| at indices corresponding to
  // |indices|, and stores the results to the corresponding elements of
  // |labels|. These labels include enough fields to differentiate among the
  // profiles, if possible; and also at least |num_fields_to_include| fields, if
  // possible. The label fields are drawn from |fields|.
  static void CreateInferredLabelsHelper(
      const std::vector<AutofillProfile*>& profiles,
      const std::list<size_t>& indices,
      const std::vector<ServerFieldType>& fields,
      size_t num_fields_to_include,
      const std::string& app_locale,
      std::vector<base::string16>* labels);

  // Utilities for listing and lookup of the data members that constitute
  // user-visible profile information.
  FormGroupList FormGroups() const;
  const FormGroup* FormGroupForType(const AutofillType& type) const;
  FormGroup* MutableFormGroupForType(const AutofillType& type);

  // Same as operator==, but ignores differences in GUID.
  bool EqualsSansGuid(const AutofillProfile& profile) const;

  // Personal information for this profile.
  NameInfo name_;
  EmailInfo email_;
  CompanyInfo company_;
  PhoneNumber phone_number_;
  Address address_;

  // The BCP 47 language code that can be used to format |address_| for display.
  std::string language_code_;

  // ID used for identifying this profile. Only set for SERVER_PROFILEs. This is
  // a hash of the contents.
  std::string server_id_;

  // Penultimate time model was used, not persisted to database.
  base::Time previous_use_date_;

  RecordType record_type_;

  // Only useful for SERVER_PROFILEs. Whether this server profile has been
  // converted to a local profile.
  bool has_converted_;

  // This flag denotes whether the client_validity_states_ are updated according
  // to the changes in the autofill profile values.
  mutable bool is_client_validity_states_updated_ = false;

  // A map identifying what fields are valid according to server validation.
  mutable std::map<ServerFieldType, ValidityState> server_validity_states_;

  // A map identifying what fields are valid according to client validation.
  mutable std::map<ServerFieldType, ValidityState> client_validity_states_;
  mutable base::WeakPtrFactory<AutofillProfile> weak_ptr_factory_;
};

// So we can compare AutofillProfiles with EXPECT_EQ().
std::ostream& operator<<(std::ostream& os, const AutofillProfile& profile);

}  // namespace autofill

#endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_PROFILE_H_