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77 changes: 77 additions & 0 deletions
77
app/src/main/kotlin/ac/mdiq/podcini/preferences/AutoBackup.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| package ac.mdiq.podcini.preferences | ||
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| import ac.mdiq.podcini.preferences.UserPreferences.appPrefs | ||
| import ac.mdiq.podcini.util.Logd | ||
| import ac.mdiq.podcini.util.MiscFormatter.dateStampFilename | ||
| import android.app.Activity | ||
| import android.net.Uri | ||
| import android.util.Log | ||
| import androidx.documentfile.provider.DocumentFile | ||
| import kotlinx.coroutines.CoroutineScope | ||
| import kotlinx.coroutines.Dispatchers | ||
| import kotlinx.coroutines.launch | ||
| import java.io.IOException | ||
|
|
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| fun autoBackup(activity: Activity) { | ||
| val TAG = "autoBackup" | ||
|
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| val backupDirName = "Podcini-AudoBackups" | ||
| val prefsDirName = "Podcini-Prefs" | ||
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| val isAutoBackup = appPrefs.getBoolean(UserPreferences.Prefs.prefAutoBackup.name, false) | ||
| if (!isAutoBackup) return | ||
| val uriString = appPrefs.getString(UserPreferences.Prefs.prefAutoBackupFolder.name, "") | ||
| if (uriString.isNullOrBlank()) return | ||
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| Logd("autoBackup", "in autoBackup directory: $uriString") | ||
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| fun deleteDirectoryAndContents(directory: DocumentFile): Boolean { | ||
| if (directory.isDirectory) { | ||
| directory.listFiles().forEach { file -> | ||
| if (file.isDirectory) deleteDirectoryAndContents(file) | ||
| Logd(TAG, "deleting ${file.name}") | ||
| file.delete() | ||
| } | ||
| } | ||
| return directory.delete() | ||
| } | ||
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| CoroutineScope(Dispatchers.IO).launch { | ||
| val interval = appPrefs.getInt(UserPreferences.Prefs.prefAutoBackupIntervall.name, 24) | ||
| var lastBackupTime = appPrefs.getLong(UserPreferences.Prefs.prefAutoBackupTimeStamp.name, 0L) | ||
| val curTime = System.currentTimeMillis() | ||
| if ((curTime - lastBackupTime) / 1000 / 3600 > interval) { | ||
| val uri = Uri.parse(uriString) | ||
| val permissions = activity.contentResolver.persistedUriPermissions.find { it.uri == uri } | ||
| if (permissions != null && permissions.isReadPermission && permissions.isWritePermission) { | ||
| val chosenDir = DocumentFile.fromTreeUri(activity, uri) | ||
| if (chosenDir != null) { | ||
| val backupDirs = mutableListOf<DocumentFile>() | ||
| try { | ||
| if (chosenDir.isDirectory) { | ||
| chosenDir.listFiles().forEach { file -> | ||
| Logd(TAG, "file: $file") | ||
| if (file.isDirectory && file.name?.startsWith(backupDirName, ignoreCase = true) == true) backupDirs.add(file) | ||
| } | ||
| } | ||
| Logd(TAG, "backupDirs: ${backupDirs.size}") | ||
| val limit = appPrefs.getInt(UserPreferences.Prefs.prefAutoBackupLimit.name, 2) | ||
| if (backupDirs.size >= limit) { | ||
| backupDirs.sortBy { it.name } | ||
| for (i in 0..(backupDirs.size - limit)) deleteDirectoryAndContents(backupDirs[i]) | ||
| } | ||
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| val dirName = dateStampFilename("$backupDirName-%s") | ||
| val exportSubDir = chosenDir.createDirectory(dirName) ?: throw IOException("Error creating subdirectory $dirName") | ||
| val subUri: Uri = exportSubDir.uri | ||
| PreferencesTransporter(prefsDirName).exportToDocument(subUri, activity) | ||
| val realmFile = exportSubDir.createFile("application/octet-stream", "backup.realm") | ||
| if (realmFile != null) DatabaseTransporter().exportToDocument(realmFile.uri, activity) | ||
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| appPrefs.edit().putLong(UserPreferences.Prefs.prefAutoBackupTimeStamp.name, curTime).apply() | ||
| } catch (e: Exception) { Log.e("autoBackup", "Error backing up ${e.message}") } | ||
| } | ||
| } else Log.e("autoBackup", "Uri permissions are no longer valid") | ||
| } | ||
| } | ||
| } |
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