// 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 CHROME_BROWSER_AUTOFILL_AUTOFILL_MANAGER_H_
#define CHROME_BROWSER_AUTOFILL_AUTOFILL_MANAGER_H_
#pragma once

#include <list>
#include <map>
#include <string>
#include <vector>

#ifdef ANDROID
#include "base/base_api.h"
#endif
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/gtest_prod_util.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/scoped_vector.h"
#include "base/string16.h"
#include "chrome/browser/autofill/autofill_download.h"
#include "chrome/browser/autofill/field_types.h"
#include "chrome/browser/autofill/form_structure.h"
#ifndef ANDROID
#include "content/browser/tab_contents/navigation_controller.h"
#endif
#include "content/browser/tab_contents/tab_contents_observer.h"

class AutofillField;
class AutofillProfile;
class AutofillMetrics;
class CreditCard;
class PersonalDataManager;
class PrefService;
class RenderViewHost;
class TabContents;

#ifdef ANDROID
class AutoFillHost;
#endif

struct ViewHostMsg_FrameNavigate_Params;

namespace IPC {
class Message;
}

namespace webkit_glue {
struct FormData;
struct FormField;
}

// Manages saving and restoring the user's personal information entered into web
// forms.
class
#ifdef ANDROID
BASE_API
#endif
AutofillManager : public TabContentsObserver,
                        public AutofillDownloadManager::Observer {
 public:
  explicit AutofillManager(TabContents* tab_contents);
  virtual ~AutofillManager();

#ifndef ANDROID
  // Registers our browser prefs.
  static void RegisterBrowserPrefs(PrefService* prefs);
#endif

#ifndef ANDROID
  // Registers our Enable/Disable Autofill pref.
  static void RegisterUserPrefs(PrefService* prefs);
#endif

#ifndef ANDROID
  // TabContentsObserver implementation.
  virtual void DidNavigateMainFramePostCommit(
      const NavigationController::LoadCommittedDetails& details,
      const ViewHostMsg_FrameNavigate_Params& params);
  virtual bool OnMessageReceived(const IPC::Message& message);
#endif

  // AutofillDownloadManager::Observer implementation:
  virtual void OnLoadedAutofillHeuristics(const std::string& heuristic_xml);
  virtual void OnUploadedAutofillHeuristics(const std::string& form_signature);
  virtual void OnHeuristicsRequestError(
      const std::string& form_signature,
      AutofillDownloadManager::AutofillRequestType request_type,
      int http_error);

  // Returns the value of the AutofillEnabled pref.
  virtual bool IsAutofillEnabled() const;

  // Imports the form data, submitted by the user, into |personal_data_|.
  void ImportFormData(const FormStructure& submitted_form);

  // Uploads the form data to the Autofill server.
  void UploadFormData(const FormStructure& submitted_form);

  // Reset cache.
  void Reset();

#ifdef ANDROID
  void OnFormsSeenWrapper(const std::vector<webkit_glue::FormData>& forms) {
    OnFormsSeen(forms);
  }

  bool OnQueryFormFieldAutoFillWrapper(const webkit_glue::FormData& form,
                                       const webkit_glue::FormField& field) {
    return OnQueryFormFieldAutofill(0, form, field);
  }

  void OnFillAutoFillFormDataWrapper(int query_id,
                                     const webkit_glue::FormData& form,
                                     const webkit_glue::FormField& field,
                                     int unique_id) {
    OnFillAutofillFormData(query_id, form, field, unique_id);
  }
#endif

 protected:
  // For tests:

  // The string/int pair is composed of the guid string and variant index
  // respectively.  The variant index is an index into the multi-valued item
  // (where applicable).
  typedef std::pair<std::string, size_t> GUIDPair;

  AutofillManager(TabContents* tab_contents,
                  PersonalDataManager* personal_data);

  void set_personal_data_manager(PersonalDataManager* personal_data) {
    personal_data_ = personal_data;
  }

  const AutofillMetrics* metric_logger() const { return metric_logger_.get(); }
  void set_metric_logger(const AutofillMetrics* metric_logger);

  ScopedVector<FormStructure>* form_structures() { return &form_structures_; }

  // Maps GUIDs to and from IDs that are used to identify profiles and credit
  // cards sent to and from the renderer process.
  virtual int GUIDToID(const GUIDPair& guid);
  virtual const GUIDPair IDToGUID(int id);

  // Methods for packing and unpacking credit card and profile IDs for sending
  // and receiving to and from the renderer process.
  int PackGUIDs(const GUIDPair& cc_guid, const GUIDPair& profile_guid);
  void UnpackGUIDs(int id, GUIDPair* cc_guid, GUIDPair* profile_guid);

 private:
  void OnFormSubmitted(const webkit_glue::FormData& form);
  void OnFormsSeen(const std::vector<webkit_glue::FormData>& forms);
#ifdef ANDROID
  bool
#else
  void
#endif
  OnQueryFormFieldAutofill(int query_id,
                                const webkit_glue::FormData& form,
                                const webkit_glue::FormField& field);
  void OnFillAutofillFormData(int query_id,
                              const webkit_glue::FormData& form,
                              const webkit_glue::FormField& field,
                              int unique_id);
  void OnShowAutofillDialog();
  void OnDidFillAutofillFormData();
  void OnDidShowAutofillSuggestions();

  // Fills |host| with the RenderViewHost for this tab.
  // Returns false if Autofill is disabled or if the host is unavailable.
  bool GetHost(const std::vector<AutofillProfile*>& profiles,
               const std::vector<CreditCard*>& credit_cards,
#ifdef ANDROID
               AutoFillHost** host) WARN_UNUSED_RESULT;
#else
               RenderViewHost** host) const WARN_UNUSED_RESULT;
#endif

  // Fills |form_structure| cached element corresponding to |form|.
  // Returns false if the cached element was not found.
  bool FindCachedForm(const webkit_glue::FormData& form,
                      FormStructure** form_structure) const WARN_UNUSED_RESULT;

  // Fills |form_structure| and |autofill_field| with the cached elements
  // corresponding to |form| and |field|. Returns false if the cached elements
  // were not found.
  bool FindCachedFormAndField(
      const webkit_glue::FormData& form,
      const webkit_glue::FormField& field,
      FormStructure** form_structure,
      AutofillField** autofill_field) WARN_UNUSED_RESULT;

  // Returns a list of values from the stored profiles that match |type| and the
  // value of |field| and returns the labels of the matching profiles. |labels|
  // is filled with the Profile label.
  void GetProfileSuggestions(FormStructure* form,
                             const webkit_glue::FormField& field,
                             AutofillFieldType type,
                             std::vector<string16>* values,
                             std::vector<string16>* labels,
                             std::vector<string16>* icons,
                             std::vector<int>* unique_ids);

  // Returns a list of values from the stored credit cards that match |type| and
  // the value of |field| and returns the labels of the matching credit cards.
  void GetCreditCardSuggestions(FormStructure* form,
                                const webkit_glue::FormField& field,
                                AutofillFieldType type,
                                std::vector<string16>* values,
                                std::vector<string16>* labels,
                                std::vector<string16>* icons,
                                std::vector<int>* unique_ids);

  // Set |field| argument's value based on |type| and contents of the
  // |credit_card|.
  void FillCreditCardFormField(const CreditCard* credit_card,
                               AutofillFieldType type,
                               webkit_glue::FormField* field);

  // Set |field| argument's value based on |type| and contents of the |profile|.
  // The |variant| parameter specifies which value in a multi-valued profile.
  void FillFormField(const AutofillProfile* profile,
                     AutofillFieldType type,
                     size_t variant,
                     webkit_glue::FormField* field);

  // Set |field| argument's value for phone/fax number based on contents of the
  // |profile|. |type| is the type of the phone.
  // The |variant| parameter specifies which value in a multi-valued profile.
  void FillPhoneNumberField(const AutofillProfile* profile,
                            AutofillFieldType type,
                            size_t variant,
                            webkit_glue::FormField* field);

  // Parses the forms using heuristic matching and querying the Autofill server.
  void ParseForms(const std::vector<webkit_glue::FormData>& forms);

  // Uses existing personal data to determine possible field types for the
  // |submitted_form|.
  void DeterminePossibleFieldTypesForUpload(FormStructure* submitted_form);

  // The personal data manager, used to save and load personal data to/from the
  // web database.  This is overridden by the AutofillManagerTest.
  // Weak reference.
  // May be NULL.  NULL indicates OTR.
  PersonalDataManager* personal_data_;

  std::list<std::string> autofilled_forms_signatures_;
  // Handles queries and uploads to Autofill servers.
  AutofillDownloadManager download_manager_;

  // Should be set to true in AutofillManagerTest and other tests, false in
  // AutofillDownloadManagerTest and in non-test environment. Is false by
  // default for the public constructor, and true by default for the test-only
  // constructors.
  bool disable_download_manager_requests_;

  // For logging UMA metrics. Overridden by metrics tests.
  scoped_ptr<const AutofillMetrics> metric_logger_;

  // Have we logged whether Autofill is enabled for this page load?
  bool has_logged_autofill_enabled_;

  // Have we logged an address suggestions count metric for this page?
  bool has_logged_address_suggestions_count_;

  // Our copy of the form data.
  ScopedVector<FormStructure> form_structures_;

  // GUID to ID mapping.  We keep two maps to convert back and forth.
  std::map<GUIDPair, int> guid_id_map_;
  std::map<int, GUIDPair> id_guid_map_;

  friend class AutofillManagerTest;
  friend class FormStructureBrowserTest;
  FRIEND_TEST_ALL_PREFIXES(AutofillManagerTest, FillCreditCardForm);
  FRIEND_TEST_ALL_PREFIXES(AutofillManagerTest,
                           FillCreditCardFormNoYearNoMonth);
  FRIEND_TEST_ALL_PREFIXES(AutofillManagerTest, FillCreditCardFormYearNoMonth);
  FRIEND_TEST_ALL_PREFIXES(AutofillManagerTest, FillCreditCardFormNoYearMonth);
  FRIEND_TEST_ALL_PREFIXES(AutofillManagerTest, FillCreditCardFormYearMonth);
  FRIEND_TEST_ALL_PREFIXES(AutofillManagerTest, FillAddressForm);
  FRIEND_TEST_ALL_PREFIXES(AutofillManagerTest, FillAddressAndCreditCardForm);
  FRIEND_TEST_ALL_PREFIXES(AutofillManagerTest, FillFormWithMultipleSections);
  FRIEND_TEST_ALL_PREFIXES(AutofillManagerTest, FillFormWithMultipleEmails);
  FRIEND_TEST_ALL_PREFIXES(AutofillManagerTest, FillAutofilledForm);
  FRIEND_TEST_ALL_PREFIXES(AutofillManagerTest, FillPhoneNumber);
  FRIEND_TEST_ALL_PREFIXES(AutofillManagerTest, FormChangesRemoveField);
  FRIEND_TEST_ALL_PREFIXES(AutofillManagerTest, FormChangesAddField);
  FRIEND_TEST_ALL_PREFIXES(AutofillManagerTest, FormSubmitted);
  FRIEND_TEST_ALL_PREFIXES(AutofillManagerTest, FormSubmittedServerTypes);
  FRIEND_TEST_ALL_PREFIXES(AutofillMetricsTest, AddressSuggestionsCount);
  FRIEND_TEST_ALL_PREFIXES(AutofillMetricsTest, AutofillIsEnabledAtPageLoad);
  FRIEND_TEST_ALL_PREFIXES(AutofillMetricsTest,
                           NoQualityMetricsForNonAutofillableForms);
  FRIEND_TEST_ALL_PREFIXES(AutofillMetricsTest, QualityMetrics);
  FRIEND_TEST_ALL_PREFIXES(AutofillMetricsTest, QualityMetricsForFailure);
  FRIEND_TEST_ALL_PREFIXES(AutofillMetricsTest, QualityMetricsWithExperimentId);
  FRIEND_TEST_ALL_PREFIXES(AutofillMetricsTest, SaneMetricsWithCacheMismatch);

  DISALLOW_COPY_AND_ASSIGN(AutofillManager);
};

#endif  // CHROME_BROWSER_AUTOFILL_AUTOFILL_MANAGER_H_