/*
 * Copyright (C) 2011 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.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.app.FragmentManager;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.provider.CallLog.Calls;
import android.support.annotation.Nullable;
import android.support.design.widget.Snackbar;
import com.android.dialer.app.R;
import com.android.dialer.common.Assert;
import com.android.dialer.common.concurrent.DialerExecutor;
import com.android.dialer.common.concurrent.DialerExecutor.Worker;
import com.android.dialer.common.concurrent.DialerExecutorComponent;
import com.android.dialer.enrichedcall.EnrichedCallComponent;
import com.android.dialer.phonenumbercache.CachedNumberLookupService;
import com.android.dialer.phonenumbercache.PhoneNumberCache;

/** Dialog that clears the call log after confirming with the user */
public class ClearCallLogDialog extends DialogFragment {

  private DialerExecutor<Void> clearCallLogTask;
  private ProgressDialog progressDialog;

  /** Preferred way to show this dialog */
  public static void show(FragmentManager fragmentManager) {
    ClearCallLogDialog dialog = new ClearCallLogDialog();
    dialog.show(fragmentManager, "deleteCallLog");
  }

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    clearCallLogTask =
        DialerExecutorComponent.get(getContext())
            .dialerExecutorFactory()
            .createUiTaskBuilder(
                getFragmentManager(),
                "clearCallLogTask",
                new ClearCallLogWorker(getActivity().getApplicationContext()))
            .onSuccess(this::onSuccess)
            .build();
  }

  @Override
  public Dialog onCreateDialog(Bundle savedInstanceState) {
    OnClickListener okListener =
        (dialog, which) -> {
          progressDialog =
              ProgressDialog.show(
                  getActivity(), getString(R.string.clearCallLogProgress_title), "", true, false);
          progressDialog.setOwnerActivity(getActivity());
          CallLogNotificationsService.cancelAllMissedCalls(getContext());

          // TODO: Once we have the API, we should configure this ProgressDialog
          // to only show up after a certain time (e.g. 150ms)
          progressDialog.show();

          clearCallLogTask.executeSerial(null);
        };
    return new AlertDialog.Builder(getActivity())
        .setTitle(R.string.clearCallLogConfirmation_title)
        .setIconAttribute(android.R.attr.alertDialogIcon)
        .setMessage(R.string.clearCallLogConfirmation)
        .setNegativeButton(android.R.string.cancel, null)
        .setPositiveButton(android.R.string.ok, okListener)
        .setCancelable(true)
        .create();
  }

  private static class ClearCallLogWorker implements Worker<Void, Void> {
    private final Context appContext;

    private ClearCallLogWorker(Context appContext) {
      this.appContext = appContext;
    }

    @Nullable
    @Override
    public Void doInBackground(@Nullable Void unused) throws Throwable {
      appContext.getContentResolver().delete(Calls.CONTENT_URI, null, null);
      CachedNumberLookupService cachedNumberLookupService =
          PhoneNumberCache.get(appContext).getCachedNumberLookupService();
      if (cachedNumberLookupService != null) {
        cachedNumberLookupService.clearAllCacheEntries(appContext);
      }
      return null;
    }
  }

  private void onSuccess(Void unused) {
    Assert.isNotNull(progressDialog);
    Activity activity = progressDialog.getOwnerActivity();

    if (activity == null || activity.isDestroyed() || activity.isFinishing()) {
      return;
    }

    maybeShowEnrichedCallSnackbar(activity);

    if (progressDialog != null && progressDialog.isShowing()) {
      progressDialog.dismiss();
    }
  }

  private void maybeShowEnrichedCallSnackbar(Activity activity) {
    if (EnrichedCallComponent.get(activity).getEnrichedCallManager().hasStoredData()) {
      Snackbar.make(
              activity.findViewById(R.id.calllog_frame),
              activity.getString(R.string.multiple_ec_data_deleted),
              5_000)
          .show();
    }
  }
}