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/*
* 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.database;
import android.content.ContentProvider;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteQueryBuilder;
import android.net.Uri;
import android.os.ParcelFileDescriptor;
import android.support.annotation.Nullable;
import android.text.TextUtils;
import android.webkit.MimeTypeMap;
import com.android.dialerbind.DatabaseHelperManager;
import com.google.common.annotations.VisibleForTesting;
import java.io.File;
import java.io.FileNotFoundException;
/**
* An implementation of the Voicemail Archive content provider. This class performs
* all database level operations on the voicemail_archive_table.
*/
public class VoicemailArchiveProvider extends ContentProvider {
private static final String TAG = "VMArchiveProvider";
private static final int VOICEMAIL_ARCHIVE_TABLE = 1;
private static final int VOICEMAIL_ARCHIVE_TABLE_ID = 2;
private static final String VOICEMAIL_FOLDER = "voicemails";
private DialerDatabaseHelper mDialerDatabaseHelper;
private final UriMatcher mUriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
@Override
public boolean onCreate() {
mDialerDatabaseHelper = getDatabaseHelper(getContext());
if (mDialerDatabaseHelper == null) {
return false;
}
mUriMatcher.addURI(VoicemailArchiveContract.AUTHORITY,
VoicemailArchiveContract.VoicemailArchive.VOICEMAIL_ARCHIVE_TABLE,
VOICEMAIL_ARCHIVE_TABLE);
mUriMatcher.addURI(VoicemailArchiveContract.AUTHORITY,
VoicemailArchiveContract.VoicemailArchive.VOICEMAIL_ARCHIVE_TABLE + "/#",
VOICEMAIL_ARCHIVE_TABLE_ID);
return true;
}
@VisibleForTesting
protected DialerDatabaseHelper getDatabaseHelper(Context context) {
return DatabaseHelperManager.getDatabaseHelper(context);
}
/**
* Used by the test class because it extends {@link android.test.ProviderTestCase2} in which the
* {@link android.test.IsolatedContext} returns /dev/null when getFilesDir() is called.
*
* @see android.test.IsolatedContext#getFilesDir
*/
@VisibleForTesting
protected File getFilesDir() {
return getContext().getFilesDir();
}
@Nullable
@Override
public Cursor query(Uri uri,
@Nullable String[] projection,
@Nullable String selection,
@Nullable String[] selectionArgs,
@Nullable String sortOrder) {
SQLiteDatabase db = mDialerDatabaseHelper.getReadableDatabase();
SQLiteQueryBuilder queryBuilder = getQueryBuilder(uri);
Cursor cursor = queryBuilder
.query(db, projection, selection, selectionArgs, null, null, sortOrder);
if (cursor != null) {
cursor.setNotificationUri(getContext().getContentResolver(),
VoicemailArchiveContract.VoicemailArchive.CONTENT_URI);
}
return cursor;
}
@Override
public String getType(Uri uri) {
return VoicemailArchiveContract.VoicemailArchive.CONTENT_ITEM_TYPE;
}
@Nullable
@Override
public Uri insert(Uri uri, ContentValues values) {
SQLiteDatabase db = mDialerDatabaseHelper.getWritableDatabase();
long id = db.insert(DialerDatabaseHelper.Tables.VOICEMAIL_ARCHIVE_TABLE,
null, values);
if (id < 0) {
return null;
}
notifyChange(uri);
// Create the directory for archived voicemails if it doesn't already exist
File directory = new File(getFilesDir(), VOICEMAIL_FOLDER);
directory.mkdirs();
Uri newUri = ContentUris.withAppendedId(uri, id);
// Create new file only if path is not provided to one
if (!values.containsKey(VoicemailArchiveContract.VoicemailArchive._DATA)) {
String fileExtension = MimeTypeMap.getSingleton().getExtensionFromMimeType(
values.getAsString(VoicemailArchiveContract.VoicemailArchive.MIME_TYPE));
File voicemailFile = new File(directory,
TextUtils.isEmpty(fileExtension) ? Long.toString(id) :
id + "." + fileExtension);
values.put(VoicemailArchiveContract.VoicemailArchive._DATA, voicemailFile.getPath());
}
update(newUri, values, null, null);
return newUri;
}
@Override
public int delete(Uri uri, @Nullable String selection, @Nullable String[] selectionArgs) {
SQLiteDatabase db = mDialerDatabaseHelper.getWritableDatabase();
SQLiteQueryBuilder queryBuilder = getQueryBuilder(uri);
Cursor cursor = queryBuilder.query(db, null, selection, selectionArgs, null, null, null);
// Delete all the voicemail files related to the selected rows
while (cursor.moveToNext()) {
deleteFile(cursor.getString(cursor.getColumnIndex(
VoicemailArchiveContract.VoicemailArchive._DATA)));
}
int rows = db.delete(DialerDatabaseHelper.Tables.VOICEMAIL_ARCHIVE_TABLE,
getSelectionWithId(selection, uri),
selectionArgs);
if (rows > 0) {
notifyChange(uri);
}
return rows;
}
@Override
public int update(Uri uri,
ContentValues values,
@Nullable String selection,
@Nullable String[] selectionArgs) {
SQLiteDatabase db = mDialerDatabaseHelper.getWritableDatabase();
selection = getSelectionWithId(selection, uri);
int rows = db.update(DialerDatabaseHelper.Tables.VOICEMAIL_ARCHIVE_TABLE,
values,
selection,
selectionArgs);
if (rows > 0) {
notifyChange(uri);
}
return rows;
}
@Override
public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException {
if (mUriMatcher.match(uri) != VOICEMAIL_ARCHIVE_TABLE_ID) {
throw new IllegalArgumentException("URI Invalid.");
}
return openFileHelper(uri, mode);
}
private void deleteFile(@Nullable String path) {
if (TextUtils.isEmpty(path)) {
return;
}
File file = new File(path);
if (file.exists()) {
file.delete();
}
}
private SQLiteQueryBuilder getQueryBuilder(Uri uri) {
SQLiteQueryBuilder queryBuilder = new SQLiteQueryBuilder();
queryBuilder.setTables(DialerDatabaseHelper.Tables.VOICEMAIL_ARCHIVE_TABLE);
String selectionWithId = getSelectionWithId(null, uri);
if (!TextUtils.isEmpty(selectionWithId)) {
queryBuilder.appendWhere(selectionWithId);
}
return queryBuilder;
}
private String getSelectionWithId(String selection, Uri uri) {
int match = mUriMatcher.match(uri);
switch (match) {
case VOICEMAIL_ARCHIVE_TABLE:
return selection;
case VOICEMAIL_ARCHIVE_TABLE_ID:
String idStr = VoicemailArchiveContract.VoicemailArchive._ID + "=" +
ContentUris.parseId(uri);
return TextUtils.isEmpty(selection) ? idStr : selection + " AND " + idStr;
default:
throw new IllegalArgumentException("Unknown uri: " + uri);
}
}
private void notifyChange(Uri uri) {
getContext().getContentResolver().notifyChange(uri, null);
}
}
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