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      1 /*
      2  * Copyright (C) 2018 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License
     15  */
     16 
     17 package com.android.dialer.calllog;
     18 
     19 import android.content.SharedPreferences;
     20 import android.support.annotation.AnyThread;
     21 import android.support.annotation.VisibleForTesting;
     22 import com.android.dialer.common.concurrent.Annotations.BackgroundExecutor;
     23 import com.android.dialer.storage.Unencrypted;
     24 import com.google.common.util.concurrent.ListenableFuture;
     25 import com.google.common.util.concurrent.ListeningExecutorService;
     26 import javax.annotation.concurrent.ThreadSafe;
     27 import javax.inject.Inject;
     28 
     29 /** Provides information about the state of the annotated call log. */
     30 @ThreadSafe
     31 public final class CallLogState {
     32 
     33   private static final String ANNOTATED_CALL_LOG_BUILT_PREF = "annotated_call_log_built";
     34 
     35   private final SharedPreferences sharedPreferences;
     36   private final ListeningExecutorService backgroundExecutor;
     37 
     38   @VisibleForTesting
     39   @Inject
     40   public CallLogState(
     41       @Unencrypted SharedPreferences sharedPreferences,
     42       @BackgroundExecutor ListeningExecutorService backgroundExecutor) {
     43     this.sharedPreferences = sharedPreferences;
     44     this.backgroundExecutor = backgroundExecutor;
     45   }
     46 
     47   /**
     48    * Mark the call log as having been built. This is written to disk the first time the annotated
     49    * call log has been built and shouldn't ever be reset unless the user clears data.
     50    */
     51   @AnyThread
     52   public void markBuilt() {
     53     sharedPreferences.edit().putBoolean(ANNOTATED_CALL_LOG_BUILT_PREF, true).apply();
     54   }
     55 
     56   /**
     57    * Returns true if the annotated call log has been built at least once.
     58    *
     59    * <p>It may not yet have been built if the user was just upgraded to the new call log, or they
     60    * just cleared data.
     61    */
     62   @AnyThread
     63   public ListenableFuture<Boolean> isBuilt() {
     64     return backgroundExecutor.submit(
     65         () -> sharedPreferences.getBoolean(ANNOTATED_CALL_LOG_BUILT_PREF, false));
     66   }
     67 }
     68