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feat(proto): add backup and restore for proto preference #171
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52 changes: 52 additions & 0 deletions
52
...eTest/kotlin/io/github/arthurkun/generic/datastore/proto/backup/AndroidProtoBackupTest.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| package io.github.arthurkun.generic.datastore.proto.backup | ||
|
|
||
| import android.content.Context | ||
| import androidx.datastore.core.DataMigration | ||
| import androidx.test.core.app.ApplicationProvider | ||
| import androidx.test.ext.junit.runners.AndroidJUnit4 | ||
| import io.github.arthurkun.generic.datastore.proto.GenericProtoDatastore | ||
| import io.github.arthurkun.generic.datastore.proto.core.AndroidProtoTestHelper | ||
| import io.github.arthurkun.generic.datastore.proto.core.TestProtoData | ||
| import io.github.arthurkun.generic.datastore.proto.core.TestProtoDataSerializer | ||
| import kotlinx.coroutines.test.TestDispatcher | ||
| import org.junit.After | ||
| import org.junit.Before | ||
| import org.junit.runner.RunWith | ||
| import java.io.File | ||
| import io.github.arthurkun.generic.datastore.proto.createProtoDatastore as createProtoDatastoreFactory | ||
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|
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| @RunWith(AndroidJUnit4::class) | ||
| class AndroidProtoBackupTest : AbstractProtoBackupTest() { | ||
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| private val helper = AndroidProtoTestHelper.standard("test_proto_backup") | ||
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| override val protoDatastore get() = helper.protoDatastore | ||
| override val testDispatcher: TestDispatcher get() = helper.testDispatcher | ||
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| override fun createProtoDatastore( | ||
| datastoreName: String, | ||
| migrations: List<DataMigration<TestProtoData>>, | ||
| ): GenericProtoDatastore<TestProtoData> = createProtoDatastoreFactory( | ||
| serializer = TestProtoDataSerializer, | ||
| defaultValue = TestProtoData(), | ||
| migrations = migrations, | ||
| producePath = { | ||
| val context = ApplicationProvider.getApplicationContext<Context>() | ||
| context.filesDir.resolve("datastore/$datastoreName.pb").absolutePath | ||
| }, | ||
| ) | ||
|
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| override fun deleteProtoDatastore(datastoreName: String) { | ||
| val context = ApplicationProvider.getApplicationContext<Context>() | ||
| val dataStoreFile = File(context.filesDir, "datastore/$datastoreName.pb") | ||
| if (dataStoreFile.exists()) { | ||
| dataStoreFile.delete() | ||
| } | ||
| } | ||
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| @Before | ||
| fun setup() = helper.setup() | ||
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| @After | ||
| fun tearDown() = helper.tearDown() | ||
| } |
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24 changes: 24 additions & 0 deletions
24
...ommonMain/kotlin/io/github/arthurkun/generic/datastore/proto/backup/ProtoBackupCreator.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| package io.github.arthurkun.generic.datastore.proto.backup | ||
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| import io.github.arthurkun.generic.datastore.core.systemFileSystem | ||
| import kotlinx.coroutines.CoroutineDispatcher | ||
| import kotlinx.coroutines.Dispatchers | ||
| import kotlinx.coroutines.IO | ||
| import kotlinx.coroutines.withContext | ||
| import okio.Path | ||
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| internal class ProtoBackupCreator( | ||
| private val path: Path, | ||
| private val ioDispatcher: CoroutineDispatcher = Dispatchers.IO, | ||
| ) { | ||
|
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| suspend fun exportAsByteArray(): ByteArray = withContext(ioDispatcher) { | ||
| if (!systemFileSystem.exists(path)) { | ||
| return@withContext ByteArray(0) | ||
| } | ||
|
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| systemFileSystem.read(path) { | ||
| readByteArray() | ||
| } | ||
| } | ||
| } |
16 changes: 16 additions & 0 deletions
16
...mmonMain/kotlin/io/github/arthurkun/generic/datastore/proto/backup/ProtoBackupRestorer.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| package io.github.arthurkun.generic.datastore.proto.backup | ||
|
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| import androidx.datastore.core.DataStore | ||
| import androidx.datastore.core.okio.OkioSerializer | ||
| import okio.Buffer | ||
|
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| internal class ProtoBackupRestorer<T>( | ||
| private val datastore: DataStore<T>, | ||
| private val serializer: OkioSerializer<T>, | ||
| ) { | ||
|
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| suspend fun importFromByteArray(data: ByteArray) { | ||
| val imported = serializer.readFrom(Buffer().write(data)) | ||
| datastore.updateData { imported } | ||
| } | ||
| } |
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