content: /*
   * Copyright (C) 2017 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.example.android.autofill.service.settings;
  
  import android.content.Context;
  import android.content.DialogInterface;
  import android.content.Intent;
  import android.content.SharedPreferences;
  import android.net.Uri;
  import android.os.Bundle;
  import android.provider.Settings;
  import android.support.design.widget.Snackbar;
  import android.support.v7.app.AlertDialog;
  import android.support.v7.app.AppCompatActivity;
  import android.view.LayoutInflater;
  import android.view.View;
  import android.view.ViewGroup;
  import android.view.autofill.AutofillManager;
  import android.widget.CompoundButton;
  import android.widget.EditText;
  import android.widget.ImageView;
  import android.widget.NumberPicker;
  import android.widget.RadioGroup;
  import android.widget.Switch;
  import android.widget.TextView;
  
  import com.example.android.autofill.service.R;
  import com.example.android.autofill.service.data.AutofillDataBuilder;
  import com.example.android.autofill.service.data.DataCallback;
  import com.example.android.autofill.service.data.FakeAutofillDataBuilder;
  import com.example.android.autofill.service.data.source.DefaultFieldTypesSource;
  import com.example.android.autofill.service.data.source.PackageVerificationDataSource;
  import com.example.android.autofill.service.data.source.local.DefaultFieldTypesLocalJsonSource;
  import com.example.android.autofill.service.data.source.local.LocalAutofillDataSource;
  import com.example.android.autofill.service.data.source.local.SharedPrefsPackageVerificationRepository;
  import com.example.android.autofill.service.data.source.local.dao.AutofillDao;
  import com.example.android.autofill.service.data.source.local.db.AutofillDatabase;
  import com.example.android.autofill.service.model.DatasetWithFilledAutofillFields;
  import com.example.android.autofill.service.model.FieldTypeWithHeuristics;
  import com.example.android.autofill.service.util.AppExecutors;
  import com.example.android.autofill.service.util.Util;
  import com.google.gson.GsonBuilder;
  
  import java.util.List;
  
  import static com.example.android.autofill.service.util.Util.DalCheckRequirement.AllUrls;
  import static com.example.android.autofill.service.util.Util.DalCheckRequirement.Disabled;
  import static com.example.android.autofill.service.util.Util.DalCheckRequirement.LoginOnly;
  import static com.example.android.autofill.service.util.Util.logd;
  import static com.example.android.autofill.service.util.Util.logw;
  
  public class SettingsActivity extends AppCompatActivity {
      private static final String TAG = "SettingsActivity";
      private static final int REQUEST_CODE_SET_DEFAULT = 1;
      private AutofillManager mAutofillManager;
      private LocalAutofillDataSource mLocalAutofillDataSource;
      private PackageVerificationDataSource mPackageVerificationDataSource;
      private MyPreferences mPreferences;
      private String mPackageName;
  
      @Override
      public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.multidataset_service_settings_activity);
          SharedPreferences localAfDataSourceSharedPrefs =
                  getSharedPreferences(LocalAutofillDataSource.SHARED_PREF_KEY, Context.MODE_PRIVATE);
          DefaultFieldTypesSource defaultFieldTypesSource =
                  DefaultFieldTypesLocalJsonSource.getInstance(getResources(),
                          new GsonBuilder().create());
          AutofillDao autofillDao = AutofillDatabase.getInstance(
                  this, defaultFieldTypesSource, new AppExecutors()).autofillDao();
          mPackageName = getPackageName();
          mLocalAutofillDataSource = LocalAutofillDataSource.getInstance(localAfDataSourceSharedPrefs,
                  autofillDao, new AppExecutors());
          mAutofillManager = getSystemService(AutofillManager.class);
          mPackageVerificationDataSource =
                  SharedPrefsPackageVerificationRepository.getInstance(this);
          mPreferences = MyPreferences.getInstance(this);
          setupSettingsSwitch(R.id.settings_auth_responses_container,
                  R.id.settings_auth_responses_label,
                  R.id.settings_auth_responses_switch,
                  mPreferences.isResponseAuth(),
                  (compoundButton, isResponseAuth) -> mPreferences.setResponseAuth(isResponseAuth));
          setupSettingsSwitch(R.id.settings_auth_datasets_container,
                  R.id.settings_auth_datasets_label,
                  R.id.settings_auth_datasets_switch,
                  mPreferences.isDatasetAuth(),
                  (compoundButton, isDatasetAuth) -> mPreferences.setDatasetAuth(isDatasetAuth));
          setupSettingsButton(R.id.settings_add_data_container,
                  R.id.settings_add_data_label,
                  R.id.settings_add_data_icon,
                  (view) -> buildAddDataDialog().show());
          setupSettingsButton(R.id.settings_clear_data_container,
                  R.id.settings_clear_data_label,
                  R.id.settings_clear_data_icon,
                  (view) -> buildClearDataDialog().show());
          setupSettingsButton(R.id.settings_auth_credentials_container,
                  R.id.settings_auth_credentials_label,
                  R.id.settings_auth_credentials_icon,
                  (view) -> {
                      if (mPreferences.getMasterPassword() != null) {
                          buildCurrentCredentialsDialog().show();
                      } else {
                          buildNewCredentialsDialog().show();
                      }
                  });
          setupSettingsSwitch(R.id.settingsSetServiceContainer,
                  R.id.settingsSetServiceLabel,
                  R.id.settingsSetServiceSwitch,
                  mAutofillManager.hasEnabledAutofillServices(),
                  (compoundButton, serviceSet) -> setService(serviceSet));
          RadioGroup loggingLevelContainer = findViewById(R.id.loggingLevelContainer);
          Util.LogLevel loggingLevel = mPreferences.getLoggingLevel();
          Util.setLoggingLevel(loggingLevel);
          switch (loggingLevel) {
              case Off:
                  loggingLevelContainer.check(R.id.loggingOff);
                  break;
              case Debug:
                  loggingLevelContainer.check(R.id.loggingDebug);
                  break;
              case Verbose:
                  loggingLevelContainer.check(R.id.loggingVerbose);
                  break;
          }
          loggingLevelContainer.setOnCheckedChangeListener((group, checkedId) -> {
              switch (checkedId) {
                  case R.id.loggingOff:
                      mPreferences.setLoggingLevel(Util.LogLevel.Off);
                      break;
                  case R.id.loggingDebug:
                      mPreferences.setLoggingLevel(Util.LogLevel.Debug);
                      break;
                  case R.id.loggingVerbose:
                      mPreferences.setLoggingLevel(Util.LogLevel.Verbose);
                      break;
              }
          });
          RadioGroup dalCheckRequirementContainer = findViewById(R.id.dalCheckRequirementContainer);
          Util.DalCheckRequirement dalCheckRequirement = mPreferences.getDalCheckRequirement();
          switch (dalCheckRequirement) {
              case Disabled:
                  dalCheckRequirementContainer.check(R.id.dalDisabled);
                  break;
              case LoginOnly:
                  dalCheckRequirementContainer.check(R.id.dalLoginOnly);
                  break;
              case AllUrls:
                  dalCheckRequirementContainer.check(R.id.dalAllUrls);
                  break;
          }
          dalCheckRequirementContainer.setOnCheckedChangeListener((group, checkedId) -> {
              switch (checkedId) {
                  case R.id.dalDisabled:
                      mPreferences.setDalCheckRequired(Disabled);
                      break;
                  case R.id.dalLoginOnly:
                      mPreferences.setDalCheckRequired(LoginOnly);
                      break;
                  case R.id.dalAllUrls:
                      mPreferences.setDalCheckRequired(AllUrls);
                      break;
              }
          });
      }
  
      private AlertDialog buildClearDataDialog() {
          return new AlertDialog.Builder(SettingsActivity.this)
                  .setMessage(R.string.settings_clear_data_confirmation)
                  .setTitle(R.string.settings_clear_data_confirmation_title)
                  .setNegativeButton(R.string.settings_cancel, null)
                  .setPositiveButton(R.string.settings_ok, (dialog, which) -> {
                      mLocalAutofillDataSource.clear();
                      mPackageVerificationDataSource.clear();
                      mPreferences.clearCredentials();
                      dialog.dismiss();
                  })
                  .create();
      }
  
      private AlertDialog buildAddDataDialog() {
          NumberPicker numberOfDatasetsPicker = LayoutInflater
                  .from(SettingsActivity.this)
                  .inflate(R.layout.multidataset_service_settings_add_data_dialog, null)
                  .findViewById(R.id.number_of_datasets_picker);
          numberOfDatasetsPicker.setMinValue(0);
          numberOfDatasetsPicker.setMaxValue(10);
          numberOfDatasetsPicker.setWrapSelectorWheel(false);
          return new AlertDialog.Builder(SettingsActivity.this)
                  .setTitle(R.string.settings_add_data_title)
                  .setNegativeButton(R.string.settings_cancel, null)
                  .setMessage(R.string.settings_select_number_of_datasets)
                  .setView(numberOfDatasetsPicker)
                  .setPositiveButton(R.string.settings_ok, (dialog, which) -> {
                      int numOfDatasets = numberOfDatasetsPicker.getValue();
                      mPreferences.setNumberDatasets(numOfDatasets);
                      mLocalAutofillDataSource.getFieldTypes(new DataCallback<List<FieldTypeWithHeuristics>>() {
                          @Override
                          public void onLoaded(List<FieldTypeWithHeuristics> fieldTypes) {
                              boolean saved = buildAndSaveMockedAutofillFieldCollections(
                                      fieldTypes, numOfDatasets);
                              dialog.dismiss();
                              if (saved) {
                                  Snackbar.make(findViewById(R.id.settings_layout),
                                          getResources().getQuantityString(
                                                  R.plurals.settings_add_data_success,
                                                  numOfDatasets, numOfDatasets),
                                          Snackbar.LENGTH_SHORT).show();
                              }
                          }
  
                          @Override
                          public void onDataNotAvailable(String msg, Object... params) {
  
                          }
                      });
                  })
                  .create();
      }
  
      public boolean buildAndSaveMockedAutofillFieldCollections(List<FieldTypeWithHeuristics> fieldTypes,
              int numOfDatasets) {
          if (numOfDatasets < 0 || numOfDatasets > 10) {
              logw("Number of Datasets (%d) out of range.", numOfDatasets);
          }
          for (int i = 0; i < numOfDatasets; i++) {
              int datasetNumber = mLocalAutofillDataSource.getDatasetNumber();
              AutofillDataBuilder autofillDataBuilder =
                      new FakeAutofillDataBuilder(fieldTypes, mPackageName, datasetNumber);
              List<DatasetWithFilledAutofillFields> datasetsWithFilledAutofillFields =
                      autofillDataBuilder.buildDatasetsByPartition(datasetNumber);
              // Save datasets to database.
              mLocalAutofillDataSource.saveAutofillDatasets(datasetsWithFilledAutofillFields);
          }
          return true;
      }
  
      private AlertDialog.Builder prepareCredentialsDialog() {
          return new AlertDialog.Builder(SettingsActivity.this)
                  .setTitle(R.string.settings_auth_change_credentials_title)
                  .setNegativeButton(R.string.settings_cancel, null);
      }
  
      private AlertDialog buildCurrentCredentialsDialog() {
          final EditText currentPasswordField = LayoutInflater
                  .from(SettingsActivity.this)
                  .inflate(R.layout.multidataset_service_settings_authentication_dialog, null)
                  .findViewById(R.id.master_password_field);
          return prepareCredentialsDialog()
                  .setMessage(R.string.settings_auth_enter_current_password)
                  .setView(currentPasswordField)
                  .setPositiveButton(R.string.settings_ok, new DialogInterface.OnClickListener() {
                      @Override
                      public void onClick(DialogInterface dialog, int which) {
                          String password = currentPasswordField.getText().toString();
                          if (mPreferences.getMasterPassword()
                                  .equals(password)) {
                              buildNewCredentialsDialog().show();
                              dialog.dismiss();
                          }
                      }
                  })
                  .create();
      }
  
      private AlertDialog buildNewCredentialsDialog() {
          final EditText newPasswordField = LayoutInflater
                  .from(SettingsActivity.this)
                  .inflate(R.layout.multidataset_service_settings_authentication_dialog, null)
                  .findViewById(R.id.master_password_field);
          return prepareCredentialsDialog()
                  .setMessage(R.string.settings_auth_enter_new_password)
                  .setView(newPasswordField)
                  .setPositiveButton(R.string.settings_ok, (dialog, which) -> {
                      String password = newPasswordField.getText().toString();
                      mPreferences.setMasterPassword(password);
                      dialog.dismiss();
                  })
                  .create();
      }
  
      private void setupSettingsSwitch(int containerId, int labelId, int switchId, boolean checked,
              CompoundButton.OnCheckedChangeListener checkedChangeListener) {
          ViewGroup container = findViewById(containerId);
          String switchLabel = ((TextView) container.findViewById(labelId)).getText().toString();
          final Switch switchView = container.findViewById(switchId);
          switchView.setContentDescription(switchLabel);
          switchView.setChecked(checked);
          container.setOnClickListener((view) -> switchView.performClick());
          switchView.setOnCheckedChangeListener(checkedChangeListener);
      }
  
      private void setupSettingsButton(int containerId, int labelId, int imageViewId,
              final View.OnClickListener onClickListener) {
          ViewGroup container = findViewById(containerId);
          TextView buttonLabel = container.findViewById(labelId);
          String buttonLabelText = buttonLabel.getText().toString();
          ImageView imageView = container.findViewById(imageViewId);
          imageView.setContentDescription(buttonLabelText);
          container.setOnClickListener(onClickListener);
      }
  
      private void setService(boolean enableService) {
          if (enableService) {
              startEnableService();
          } else {
              disableService();
          }
      }
  
      private void disableService() {
          if (mAutofillManager != null && mAutofillManager.hasEnabledAutofillServices()) {
              mAutofillManager.disableAutofillServices();
              Snackbar.make(findViewById(R.id.settings_layout),
                      R.string.settings_autofill_disabled_message, Snackbar.LENGTH_SHORT).show();
          } else {
              logd("Sample service already disabled.");
          }
      }
  
      private void startEnableService() {
          if (mAutofillManager != null && !mAutofillManager.hasEnabledAutofillServices()) {
              Intent intent = new Intent(Settings.ACTION_REQUEST_SET_AUTOFILL_SERVICE);
              intent.setData(Uri.parse("package:com.example.android.autofill.service"));
              logd(TAG, "enableService(): intent=%s", intent);
              startActivityForResult(intent, REQUEST_CODE_SET_DEFAULT);
          } else {
              logd("Sample service already enabled.");
          }
      }
  
      @Override
      protected void onActivityResult(int requestCode, int resultCode, Intent data) {
          logd(TAG, "onActivityResult(): req=%s", requestCode);
          switch (requestCode) {
              case REQUEST_CODE_SET_DEFAULT:
                  onDefaultServiceSet(resultCode);
                  break;
          }
      }
  
      private void onDefaultServiceSet(int resultCode) {
          logd(TAG, "resultCode=%d", resultCode);
          switch (resultCode) {
              case RESULT_OK:
                  logd("Autofill service set.");
                  Snackbar.make(findViewById(R.id.settings_layout),
                          R.string.settings_autofill_service_set, Snackbar.LENGTH_SHORT)
                          .show();
                  break;
              case RESULT_CANCELED:
                  logd("Autofill service not selected.");
                  Snackbar.make(findViewById(R.id.settings_layout),
                          R.string.settings_autofill_service_not_set, Snackbar.LENGTH_SHORT)
                          .show();
                  break;
          }
      }
  }
  