/*
 * Copyright (C) 2019 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.android.permissioncontroller.permission.ui.auto;

import androidx.fragment.app.FragmentTransaction;
import androidx.preference.Preference;

import com.android.permissioncontroller.R;
import com.android.permissioncontroller.permission.model.legacy.PermissionGroup;
import com.android.permissioncontroller.permission.utils.Utils;

import java.util.List;

/** Shows the standard permissions that can be granted/denied. */
public class AutoManageStandardPermissionsFragment extends AutoManagePermissionsFragment {

    private static final String EXTRA_PREFS_KEY = "extra_prefs_key";

    /** Returns a new instance of {@link AutoManageStandardPermissionsFragment}. */
    public static AutoManageStandardPermissionsFragment newInstance() {
        return new AutoManageStandardPermissionsFragment();
    }

    @Override
    protected int getScreenHeaderRes() {
        return R.string.app_permission_manager;
    }

    @Override
    protected void updatePermissionsUi() {
        updatePermissionsUi(/* addSystemPermissions= */ true);

        // Check if we need an additional permissions preference
        List<PermissionGroup> groups = getPermissions().getGroups();
        int numExtraPermissions = 0;
        for (PermissionGroup group : groups) {
            if (!group.getDeclaringPackage().equals(AutoManagePermissionsFragment.OS_PKG)) {
                numExtraPermissions++;
            }
        }

        Preference additionalPermissionsPreference = getPreferenceScreen().findPreference(
                EXTRA_PREFS_KEY);
        if (numExtraPermissions == 0) {
            if (additionalPermissionsPreference != null) {
                getPreferenceScreen().removePreference(additionalPermissionsPreference);
            }
        } else {
            if (additionalPermissionsPreference == null) {
                additionalPermissionsPreference = new Preference(
                        getPreferenceManager().getContext());
                additionalPermissionsPreference.setKey(EXTRA_PREFS_KEY);
                additionalPermissionsPreference.setIcon(Utils.applyTint(getActivity(),
                        R.drawable.ic_more_items,
                        android.R.attr.colorControlNormal));
                additionalPermissionsPreference.setTitle(R.string.additional_permissions);
                additionalPermissionsPreference.setOnPreferenceClickListener(preference -> {
                    AutoManageCustomPermissionsFragment frag =
                            new AutoManageCustomPermissionsFragment();
                    frag.setTargetFragment(AutoManageStandardPermissionsFragment.this,
                            /* requestCode= */ 0);
                    FragmentTransaction ft = getFragmentManager().beginTransaction();
                    ft.replace(android.R.id.content, frag);
                    ft.addToBackStack(null);
                    ft.commit();
                    return true;
                });

                getPreferenceScreen().addPreference(additionalPermissionsPreference);
            }

            additionalPermissionsPreference.setSummary(getResources().getQuantityString(
                    R.plurals.additional_permissions_more, numExtraPermissions,
                    numExtraPermissions));
        }
    }
}