/*
 * Copyright (C) 2016 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.dialer.app.calllog;

import android.app.KeyguardManager;
import android.content.Context;
import android.content.Intent;
import android.database.ContentObserver;
import android.media.AudioManager;
import android.os.Bundle;
import android.provider.CallLog;
import android.provider.VoicemailContract;
import android.support.annotation.VisibleForTesting;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.android.dialer.app.R;
import com.android.dialer.app.voicemail.VoicemailAudioManager;
import com.android.dialer.app.voicemail.VoicemailErrorManager;
import com.android.dialer.app.voicemail.VoicemailPlaybackPresenter;
import com.android.dialer.common.FragmentUtils;
import com.android.dialer.common.LogUtil;
import com.android.dialer.common.concurrent.DialerExecutor;
import com.android.dialer.common.concurrent.DialerExecutorComponent;
import com.android.dialer.logging.DialerImpression;
import com.android.dialer.logging.Logger;
import com.android.dialer.util.PermissionsUtil;
import com.android.dialer.voicemail.listui.error.VoicemailErrorMessageCreator;
import com.android.dialer.voicemail.listui.error.VoicemailStatus;
import com.android.dialer.voicemail.listui.error.VoicemailStatusWorker;
import java.util.List;

public class VisualVoicemailCallLogFragment extends CallLogFragment {

  private final ContentObserver voicemailStatusObserver = new CustomContentObserver();
  private VoicemailPlaybackPresenter voicemailPlaybackPresenter;
  private DialerExecutor<Context> preSyncVoicemailStatusCheckExecutor;

  private VoicemailErrorManager voicemailErrorManager;

  public VisualVoicemailCallLogFragment() {
    super(CallLog.Calls.VOICEMAIL_TYPE);
  }

  @Override
  protected VoicemailPlaybackPresenter getVoicemailPlaybackPresenter() {
    return voicemailPlaybackPresenter;
  }

  @Override
  public void onActivityCreated(Bundle savedInstanceState) {
    voicemailPlaybackPresenter =
        VoicemailPlaybackPresenter.getInstance(getActivity(), savedInstanceState);
    if (PermissionsUtil.hasReadVoicemailPermissions(getContext())
        && PermissionsUtil.hasAddVoicemailPermissions(getContext())) {
      getActivity()
          .getContentResolver()
          .registerContentObserver(
              VoicemailContract.Status.CONTENT_URI, true, voicemailStatusObserver);
    } else {
      LogUtil.w(
          "VisualVoicemailCallLogFragment.onActivityCreated",
          "read voicemail permission unavailable.");
    }
    super.onActivityCreated(savedInstanceState);

    preSyncVoicemailStatusCheckExecutor =
        DialerExecutorComponent.get(getContext())
            .dialerExecutorFactory()
            .createUiTaskBuilder(
                getActivity().getFragmentManager(),
                "fetchVoicemailStatus",
                new VoicemailStatusWorker())
            .onSuccess(this::onPreSyncVoicemailStatusChecked)
            .build();

    voicemailErrorManager =
        new VoicemailErrorManager(getContext(), getAdapter().getAlertManager(), modalAlertManager);

    if (PermissionsUtil.hasReadVoicemailPermissions(getContext())
        && PermissionsUtil.hasAddVoicemailPermissions(getContext())) {
      getActivity()
          .getContentResolver()
          .registerContentObserver(
              VoicemailContract.Status.CONTENT_URI,
              true,
              voicemailErrorManager.getContentObserver());
    } else {
      LogUtil.w(
          "VisualVoicemailCallLogFragment.onActivityCreated",
          "read voicemail permission unavailable.");
    }
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedState) {
    View view = inflater.inflate(R.layout.call_log_fragment, container, false);
    setupView(view);
    return view;
  }

  @Override
  public void onResume() {
    super.onResume();
    voicemailPlaybackPresenter.onResume();
    voicemailErrorManager.onResume();
  }

  @Override
  public void onPause() {
    voicemailPlaybackPresenter.onPause();
    voicemailErrorManager.onPause();
    super.onPause();
  }

  @Override
  public void onDestroy() {
    if (isAdded()) {
      getActivity()
          .getContentResolver()
          .unregisterContentObserver(voicemailErrorManager.getContentObserver());
      voicemailPlaybackPresenter.onDestroy();
      voicemailErrorManager.onDestroy();
      getActivity().getContentResolver().unregisterContentObserver(voicemailStatusObserver);
    }
    super.onDestroy();
  }

  @Override
  public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    if (voicemailPlaybackPresenter != null) {
      voicemailPlaybackPresenter.onSaveInstanceState(outState);
    }
  }

  @Override
  public void fetchCalls() {
    super.fetchCalls();
    FragmentUtils.getParentUnsafe(this, CallLogFragmentListener.class).updateTabUnreadCounts();
  }

  @Override
  public void onVisible() {
    LogUtil.enterBlock("VisualVoicemailCallLogFragment.onVisible");
    super.onVisible();
    if (getActivity() != null && preSyncVoicemailStatusCheckExecutor != null) {
      preSyncVoicemailStatusCheckExecutor.executeParallel(getActivity());
      Logger.get(getActivity()).logImpression(DialerImpression.Type.VVM_TAB_VIEWED);
      getActivity().setVolumeControlStream(VoicemailAudioManager.PLAYBACK_STREAM);
    }
  }

  private void onPreSyncVoicemailStatusChecked(List<VoicemailStatus> statuses) {
    if (!shouldAutoSync(new VoicemailErrorMessageCreator(), statuses)) {
      return;
    }

    Intent intent = new Intent(VoicemailContract.ACTION_SYNC_VOICEMAIL);
    intent.setPackage(getActivity().getPackageName());
    getActivity().sendBroadcast(intent);
  }

  @VisibleForTesting
  static boolean shouldAutoSync(
      VoicemailErrorMessageCreator errorMessageCreator, List<VoicemailStatus> statuses) {
    for (VoicemailStatus status : statuses) {
      if (!status.isActive()) {
        continue;
      }
      if (errorMessageCreator.isSyncBlockingError(status)) {
        LogUtil.i(
            "VisualVoicemailCallLogFragment.shouldAutoSync", "auto-sync blocked due to " + status);
        return false;
      }
    }
    return true;
  }

  @Override
  public void onNotVisible() {
    LogUtil.enterBlock("VisualVoicemailCallLogFragment.onNotVisible");
    super.onNotVisible();
    if (getActivity() != null) {
      getActivity().setVolumeControlStream(AudioManager.USE_DEFAULT_STREAM_TYPE);
      // onNotVisible will be called in the lock screen when the call ends
      if (!getActivity().getSystemService(KeyguardManager.class).inKeyguardRestrictedInputMode()) {
        LogUtil.i("VisualVoicemailCallLogFragment.onNotVisible", "clearing all new voicemails");
        CallLogNotificationsService.markAllNewVoicemailsAsOld(getActivity());
      }
    }
  }
}