BugFix - NPE internalFolderSyncTimestamp & File Existence Check

app/src/main/java/com/nextcloud/client/jobs/InternalTwoWaySyncWork.kt

@@ -15,12 +15,13 @@ import com.nextcloud.client.device.PowerManagementService
 import com.nextcloud.client.network.ConnectivityService
 import com.owncloud.android.MainApp
 import com.owncloud.android.datamodel.FileDataStorageManager
+import com.owncloud.android.datamodel.OCFile
 import com.owncloud.android.lib.common.utils.Log_OC
 import com.owncloud.android.operations.SynchronizeFolderOperation
 import com.owncloud.android.utils.FileStorageUtils
 import java.io.File
 
-@Suppress("Detekt.NestedBlockDepth")
+@Suppress("Detekt.NestedBlockDepth", "ReturnCount")
 class InternalTwoWaySyncWork(
     private val context: Context,
     params: WorkerParameters,
@@ -47,13 +48,8 @@ class InternalTwoWaySyncWork(
             val folders = fileDataStorageManager.getInternalTwoWaySyncFolders(user)
 
             for (folder in folders) {
-                val freeSpaceLeft = File(folder.storagePath).getFreeSpace()
-                val localFolderSize = FileStorageUtils.getFolderSize(File(folder.storagePath, MainApp.getDataFolder()))
-                val remoteFolderSize = folder.fileLength
-
-                if (freeSpaceLeft < (remoteFolderSize - localFolderSize)) {
-                    Log_OC.d(TAG, "Not enough space left!")
-                    result = false
+                checkFreeSpace(folder)?.let { checkFreeSpaceResult ->
+                    return checkFreeSpaceResult
                 }
 
                 Log_OC.d(TAG, "Folder ${folder.remotePath}: started!")
@@ -85,6 +81,31 @@ class InternalTwoWaySyncWork(
         }
     }
 
+    @Suppress("TooGenericExceptionCaught")
+    private fun checkFreeSpace(folder: OCFile): Result? {
+        val storagePath = folder.storagePath ?: MainApp.getStoragePath()
+        val file = File(storagePath)
+
+        if (!file.exists()) return null
+
+        return try {
+            val freeSpaceLeft = file.freeSpace
+            val localFolder = File(storagePath, MainApp.getDataFolder())
+            val localFolderSize = FileStorageUtils.getFolderSize(localFolder)
+            val remoteFolderSize = folder.fileLength
+
+            if (freeSpaceLeft < (remoteFolderSize - localFolderSize)) {
+                Log_OC.d(TAG, "Not enough space left!")
+                Result.failure()
+            } else {
+                null
+            }
+        } catch (e: Exception) {
+            Log_OC.d(TAG, "Error caught at checkFreeSpace: $e")
+            null
+        }
+    }
+
     companion object {
         const val TAG = "InternalTwoWaySyncWork"
     }

app/src/main/java/com/owncloud/android/datamodel/FileDataStorageManager.java

@@ -1125,7 +1125,7 @@ private OCFile createFileInstance(FileEntity fileEntity) {
         ocFile.setLivePhoto(fileEntity.getMetadataLivePhoto());
         ocFile.setHidden(nullToZero(fileEntity.getHidden()) == 1);
         ocFile.setE2eCounter(fileEntity.getE2eCounter());
-        ocFile.setInternalFolderSyncTimestamp(fileEntity.getInternalTwoWaySync());
+        ocFile.setInternalFolderSyncTimestamp(nullToZero(fileEntity.getInternalTwoWaySync()));
 
         String sharees = fileEntity.getSharees();
         // Surprisingly JSON deserialization causes significant overhead.

app/src/main/java/com/owncloud/android/datamodel/OCFile.java

@@ -1076,11 +1076,15 @@ public void setE2eCounter(@Nullable Long e2eCounter) {
     }
 
     public boolean isInternalFolderSync() {
+        if (internalFolderSyncTimestamp == null) {
+            return false;
+        }
+
         return internalFolderSyncTimestamp >= 0;
     }
 
     public Long getInternalFolderSyncTimestamp() {
-        return internalFolderSyncTimestamp;
+        return Objects.requireNonNullElse(internalFolderSyncTimestamp, -1L);
     }
 
     public void setInternalFolderSyncTimestamp(Long internalFolderSyncTimestamp) {