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Rethink backup feature: all in settings - Import in settings too
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Loïc Teyssier
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Jan 22, 2024
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193 changes: 193 additions & 0 deletions
193
app/src/main/java/com/lolo/io/onelist/core/data/file_access/FileAccess.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,193 @@ | ||
| package com.lolo.io.onelist.core.data.file_access | ||
|
|
||
| import android.app.Application | ||
| import android.content.Intent | ||
| import android.net.Uri | ||
| import android.util.Log | ||
| import android.widget.Toast | ||
| import androidx.documentfile.provider.DocumentFile | ||
| import com.anggrayudi.storage.file.DocumentFileCompat | ||
| import com.anggrayudi.storage.file.getAbsolutePath | ||
| import com.anggrayudi.storage.file.makeFile | ||
| import com.google.gson.Gson | ||
| import com.google.gson.JsonIOException | ||
| import com.google.gson.JsonSyntaxException | ||
| import com.lolo.io.onelist.R | ||
| import com.lolo.io.onelist.core.model.ItemList | ||
| import kotlinx.coroutines.CoroutineScope | ||
| import kotlinx.coroutines.Dispatchers | ||
| import kotlinx.coroutines.SupervisorJob | ||
| import kotlinx.coroutines.async | ||
| import kotlinx.coroutines.launch | ||
| import kotlinx.coroutines.withContext | ||
| import java.io.FileNotFoundException | ||
| import java.io.IOException | ||
|
|
||
| class FileAccess( | ||
| val app: Application, | ||
| ) { | ||
| private val coroutineIOScope = CoroutineScope(Dispatchers.IO) | ||
| private val gson = Gson() | ||
|
|
||
|
|
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| private val Uri.canWrite | ||
| get() = | ||
| DocumentFileCompat.fromUri(app, this)?.canWrite() == true | ||
|
|
||
| private fun Uri.isIntoBackupFolder(backupUri: Uri): Boolean = | ||
| DocumentFileCompat.fromUri(app, this)?.getAbsolutePath(app) | ||
| ?.startsWith( | ||
| DocumentFileCompat.fromUri(app, backupUri)?.getAbsolutePath(app) | ||
| ?: throw IllegalArgumentException("Backup uri could not be parsed") | ||
| ) == true | ||
|
|
||
| private val Uri.fileExists | ||
| get() = | ||
| DocumentFileCompat.fromUri(app, this)?.exists() == true | ||
|
|
||
| @Throws( | ||
| FileNotFoundException::class, | ||
| JsonSyntaxException::class, | ||
| JsonIOException::class, | ||
| SecurityException::class | ||
| ) | ||
| suspend fun getListFromLocalFile(list: ItemList): ItemList { | ||
| Log.d("1LogD", list.title) | ||
| return coroutineIOScope.async(SupervisorJob()) { | ||
| val listFromFile = list.uri?.let { uri -> | ||
| app.contentResolver.openInputStream(uri).use { | ||
| gson.fromJson(it?.reader(), ItemList::class.java) | ||
| } | ||
| } ?: list | ||
| listFromFile.apply { | ||
| uri = list.uri | ||
| } | ||
| }.await() | ||
| } | ||
|
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||
|
|
||
| suspend fun saveListFile( | ||
| backupUri: String?, | ||
| list: ItemList, | ||
| onNewFileCreated: suspend (ItemList, Uri?) -> Unit | ||
| ): ItemList { | ||
| if (backupUri != null) { | ||
| list.uri.let { | ||
| if (it == null | ||
| || !it.fileExists | ||
| || !it.isIntoBackupFolder(Uri.parse(backupUri)) | ||
| || !it.canWrite | ||
| ) { | ||
| val uri = createListFile(backupUri, list)?.uri | ||
| onNewFileCreated(list, uri) | ||
| } | ||
| } | ||
|
|
||
| list.uri?.let { uri -> | ||
| try { | ||
| app.contentResolver.openOutputStream(uri, "wt").use { out -> | ||
| out?.write( | ||
| gson.toJson(list).toByteArray(Charsets.UTF_8) | ||
| ) | ||
| } | ||
| } catch (e: Exception) { | ||
| coroutineIOScope.launch { | ||
| Toast.makeText( | ||
| app, | ||
| app.getString( | ||
| R.string.error_saving_to_path, | ||
| list.title | ||
| ), // todo change to path to just error while saving list | ||
| Toast.LENGTH_SHORT | ||
| ).show() | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return list | ||
| } | ||
|
|
||
| private fun createListFile(backupUri: String, list: ItemList): DocumentFile? { | ||
| val folderUri = Uri.parse(backupUri) | ||
| return Uri.parse(backupUri)?.let { | ||
| return if (DocumentFileCompat.fromUri(app, it)?.canWrite() == true) { | ||
| val folder = DocumentFileCompat.fromUri(app, folderUri) | ||
| folder?.makeFile(app, "${list.title}-${list.id}.1list") | ||
| } else null | ||
| } | ||
| } | ||
|
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||
|
|
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| // TODO Toasts should not be here ! | ||
| fun deleteListBackupFile(list: ItemList) { | ||
| coroutineIOScope.launch { | ||
| list.uri?.let { uri -> | ||
| try { | ||
| DocumentFile.fromSingleUri(app, uri)?.delete() | ||
| withContext(Dispatchers.Main) { | ||
| Toast.makeText( | ||
| app, | ||
| app.getString(R.string.file_deleted), | ||
| Toast.LENGTH_LONG | ||
| ).show() | ||
| } | ||
| } catch (e: Exception) { | ||
| withContext(Dispatchers.Main) { | ||
| Toast.makeText( | ||
| app, | ||
| app.getString(R.string.error_deleting_list_file), | ||
| Toast.LENGTH_SHORT | ||
| ).show() | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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|
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| suspend fun createListFromUri( | ||
| uri: Uri, onListCreated: suspend (list: ItemList) -> Unit | ||
| ): ItemList { | ||
| return withContext(Dispatchers.IO) { | ||
| try { | ||
| val gson = Gson() | ||
| val content = | ||
| app.contentResolver.openInputStream(uri) | ||
| .use { iss -> iss?.bufferedReader()?.use { it.readText() } } | ||
| // return : | ||
| gson.fromJson(content, ItemList::class.java).also { | ||
| onListCreated(it) | ||
| } | ||
| } catch (e: IllegalArgumentException) { | ||
| throw e | ||
| } catch (e: Exception) { | ||
| throw IOException(app.getString(R.string.error_opening_file)) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| suspend fun saveAllListToFiles( | ||
| backupUri: String, | ||
| lists: List<ItemList>, | ||
| onNewFileCreated: (ItemList, Uri?) -> Unit | ||
| ) { | ||
| return withContext(Dispatchers.IO) { | ||
| lists.forEach { | ||
| saveListFile(backupUri, it, onNewFileCreated) | ||
| } | ||
| } | ||
| } | ||
|
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| fun revokeAllAccessFolders() { | ||
| DocumentFileCompat.getAccessibleUris(app) | ||
| .flatMap { it.value } | ||
| .forEach { | ||
| app.contentResolver.releasePersistableUriPermission( | ||
| it, | ||
| Intent.FLAG_GRANT_WRITE_URI_PERMISSION or Intent.FLAG_GRANT_READ_URI_PERMISSION | ||
| ) | ||
| } | ||
| } | ||
|
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|
|
||
| } |
5 changes: 2 additions & 3 deletions
5
app/src/main/java/com/lolo/io/onelist/core/data/migration/UpdateHelper.kt
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8 changes: 8 additions & 0 deletions
8
app/src/main/java/com/lolo/io/onelist/core/data/model/AllListsWithErrors.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| package com.lolo.io.onelist.core.data.model | ||
|
|
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| import com.lolo.io.onelist.core.model.ItemList | ||
|
|
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| data class AllListsWithErrors( | ||
| val lists: List<ItemList> = listOf(), | ||
| val errors: List<ErrorLoadingList> = listOf(), | ||
| ) |
8 changes: 8 additions & 0 deletions
8
app/src/main/java/com/lolo/io/onelist/core/data/model/ErrorLoadingList.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| package com.lolo.io.onelist.core.data.model | ||
|
|
||
| sealed class ErrorLoadingList { | ||
| data object FileMissingError: ErrorLoadingList() | ||
| data object FileCorruptedError: ErrorLoadingList() | ||
| data object PermissionDeniedError: ErrorLoadingList() | ||
| data object UnknownError: ErrorLoadingList() | ||
| } |
7 changes: 7 additions & 0 deletions
7
app/src/main/java/com/lolo/io/onelist/core/data/model/Resource.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| package com.lolo.io.onelist.core.data.model | ||
|
|
||
| sealed class Resource<out T> { | ||
| data class Success<out T>(val value: T): Resource<T>() | ||
| data object Loading: Resource<Nothing>() | ||
| data class Error<out T>(val code: Int): Resource<T>() | ||
| } |
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