/*
 * Copyright (C) 2015 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.afwsamples.testdpc.policy;

import android.annotation.TargetApi;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.ResolveInfo;
import android.graphics.drawable.Drawable;
import android.os.Build.VERSION_CODES;
import android.text.TextUtils;
import com.afwsamples.testdpc.R;
import com.afwsamples.testdpc.common.ToggleComponentsArrayAdapter;
import com.afwsamples.testdpc.common.Util;
import java.util.ArrayList;
import java.util.List;

/**
 * Displays a list of available components with a checkbox for enabling the component. All
 * components belonging to system packages are enabled by default and can't be disabled.
 */
public class AvailableComponentsInfoArrayAdapter extends ToggleComponentsArrayAdapter {
  private List<String> mPermittedPackageNames = null;

  public AvailableComponentsInfoArrayAdapter(
      Context context, List<ResolveInfo> resolveInfoList, List<String> permittedPackageNames) {
    super(context, R.id.pkg_name, resolveInfoList);
    mPermittedPackageNames = permittedPackageNames;
    setIsComponentEnabledList(createIsComponentEnabledList());
  }

  /**
   * There are three cases where a given component in a profile is enabled. 1) There is no
   * restriction on the given component. 2) The given component's package name exist in the
   * permitted package list. 3) The given component belong to a system package.
   */
  @Override
  public boolean isComponentEnabled(ResolveInfo resolveInfo) {
    if (resolveInfo != null
        && resolveInfo.serviceInfo != null
        && !TextUtils.isEmpty(resolveInfo.serviceInfo.packageName)) {
      if (mPermittedPackageNames == null || isSystemApp(resolveInfo.serviceInfo.applicationInfo)) {
        return true;
      } else {
        return mPermittedPackageNames.contains(resolveInfo.serviceInfo.packageName);
      }
    }
    return false;
  }

  @Override
  protected boolean canModifyComponent(int position) {
    // Components in a system package are always enabled.
    return !isSystemApp(getApplicationInfo(position));
  }

  public ArrayList<String> getSelectedComponents() {
    ArrayList<String> selectedComponentsArrayList = new ArrayList<String>();
    int size = getCount();
    for (int i = 0; i < size; i++) {
      if (mIsComponentCheckedList.get(i)) {
        selectedComponentsArrayList.add(getItem(i).serviceInfo.packageName);
      }
    }
    return selectedComponentsArrayList;
  }

  @Override
  protected ApplicationInfo getApplicationInfo(int position) {
    return getItem(position).serviceInfo.applicationInfo;
  }

  @Override
  @TargetApi(VERSION_CODES.LOLLIPOP_MR1)
  protected Drawable getApplicationIcon(ApplicationInfo applicationInfo) {
    // Input methods refer to the packages in primary profile. so, we
    // need to show them unbadged.
    // ApplicationInfo.loadUnbadgedIcon api is added in L-MR1, so can't get unbadged icon.
    if (Util.SDK_INT <= VERSION_CODES.LOLLIPOP) {
      return mPackageManager.getApplicationIcon(applicationInfo);
    } else {
      return applicationInfo.loadUnbadgedIcon(mPackageManager);
    }
  }

  private List<Boolean> createIsComponentEnabledList() {
    List<Boolean> isComponentEnabledList = new ArrayList<>();
    int size = getCount();
    for (int i = 0; i < size; i++) {
      isComponentEnabledList.add(isComponentEnabled(getItem(i)));
    }
    return isComponentEnabledList;
  }

  @Override
  public CharSequence getDisplayName(int position) {
    return getItem(position).loadLabel(mPackageManager);
  }
}
