1/*
2 * Copyright (C) 2017 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 */
16package com.android.voicemail.impl.transcribe;
17
18import android.annotation.TargetApi;
19import android.content.ContentResolver;
20import android.content.ContentValues;
21import android.content.Context;
22import android.database.Cursor;
23import android.net.Uri;
24import android.os.Build.VERSION_CODES;
25import android.provider.VoicemailContract.Voicemails;
26import android.support.annotation.WorkerThread;
27import android.support.v4.os.BuildCompat;
28import android.util.Pair;
29import com.android.dialer.common.Assert;
30import com.android.dialer.common.LogUtil;
31
32/** Helper class for reading and writing transcription data in the database */
33@TargetApi(VERSION_CODES.O)
34public class TranscriptionDbHelper {
35  private static final String[] PROJECTION =
36      new String[] {
37        Voicemails.TRANSCRIPTION, // 0
38        VoicemailCompat.TRANSCRIPTION_STATE // 1
39      };
40
41  public static final int TRANSCRIPTION = 0;
42  public static final int TRANSCRIPTION_STATE = 1;
43
44  private final ContentResolver contentResolver;
45  private final Uri uri;
46
47  TranscriptionDbHelper(Context context, Uri uri) {
48    Assert.isNotNull(uri);
49    this.contentResolver = context.getContentResolver();
50    this.uri = uri;
51  }
52
53  @WorkerThread
54  @TargetApi(VERSION_CODES.M) // used for try with resources
55  Pair<String, Integer> getTranscriptionAndState() {
56    Assert.checkArgument(BuildCompat.isAtLeastO());
57    Assert.isWorkerThread();
58    try (Cursor cursor = contentResolver.query(uri, PROJECTION, null, null, null)) {
59      if (cursor == null) {
60        LogUtil.e("TranscriptionDbHelper.getTranscriptionAndState", "query failed.");
61        return null;
62      }
63
64      if (cursor.moveToFirst()) {
65        String transcription = cursor.getString(TRANSCRIPTION);
66        int transcriptionState = cursor.getInt(TRANSCRIPTION_STATE);
67        return new Pair<>(transcription, transcriptionState);
68      }
69    }
70    LogUtil.i("TranscriptionDbHelper.getTranscriptionAndState", "query returned no results");
71    return null;
72  }
73
74  @WorkerThread
75  void setTranscriptionState(int transcriptionState) {
76    Assert.isWorkerThread();
77    LogUtil.i(
78        "TranscriptionDbHelper.setTranscriptionState",
79        "uri: " + uri + ", state: " + transcriptionState);
80    ContentValues values = new ContentValues();
81    values.put(VoicemailCompat.TRANSCRIPTION_STATE, transcriptionState);
82    updateDatabase(values);
83  }
84
85  @WorkerThread
86  void setTranscriptionAndState(String transcription, int transcriptionState) {
87    Assert.isWorkerThread();
88    LogUtil.i(
89        "TranscriptionDbHelper.setTranscriptionAndState",
90        "uri: " + uri + ", state: " + transcriptionState);
91    ContentValues values = new ContentValues();
92    values.put(Voicemails.TRANSCRIPTION, transcription);
93    values.put(VoicemailCompat.TRANSCRIPTION_STATE, transcriptionState);
94    updateDatabase(values);
95  }
96
97  private void updateDatabase(ContentValues values) {
98    int updatedCount = contentResolver.update(uri, values, null, null);
99    if (updatedCount != 1) {
100      LogUtil.e(
101          "TranscriptionDbHelper.updateDatabase",
102          "Wrong row count, should have updated 1 row, was: " + updatedCount);
103    }
104  }
105}
106