add: generate resize image if image is deleted only locally, to save server request

Signed-off-by: alperozturk <[email protected]>

Author: alperozturk96

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

@@ -1319,6 +1319,24 @@ private static Bitmap handlePNG(Bitmap source, int newWidth, int newHeight) {
         return dest;
     }
 
+    public static void generateResizedImage(OCFile file) {
+        Point p = getScreenDimension();
+        int pxW = p.x;
+        int pxH = p.y;
+        String imageKey = PREFIX_RESIZED_IMAGE + file.getRemoteId();
+
+        Bitmap bitmap = BitmapUtils.decodeSampledBitmapFromFile(file.getStoragePath(), pxW, pxH);
+
+        if (bitmap != null) {
+            // Handle PNG
+            if (PNG_MIMETYPE.equalsIgnoreCase(file.getMimeType())) {
+                bitmap = handlePNG(bitmap, pxW, pxH);
+            }
+
+            addThumbnailToCache(imageKey, bitmap, file.getStoragePath(), pxW, pxH);
+        }
+    }
+
     public static void generateThumbnailFromOCFile(OCFile file, User user, Context context) {
         int pxW;
         int pxH;

app/src/main/java/com/owncloud/android/operations/RemoveFileOperation.kt

@@ -31,6 +31,7 @@ import com.owncloud.android.utils.MimeTypeUtil
  * @param context  Android context.
  * @param storageManager  Storage manager handling local file operations.
  */
+@Suppress("LongParameterList")
 class RemoveFileOperation(
     val file: OCFile,
     private val onlyLocalCopy: Boolean,
@@ -53,14 +54,19 @@ class RemoveFileOperation(
         var result: RemoteOperationResult<*>? = null
         val operation: RemoteOperation<*>?
 
-        // Remove image from thumbnail cache
-        if (MimeTypeUtil.isImage(file.mimeType)) {
-            ThumbnailsCacheManager.removeFromCache(file)
-        }
-
         var localRemovalFailed = false
 
-        if (!onlyLocalCopy) {
+        if (onlyLocalCopy) {
+            // generate resize image if image is deleted only locally, to save server request
+            if (MimeTypeUtil.isImage(file.mimeType)) {
+                ThumbnailsCacheManager.generateResizedImage(file)
+            }
+
+            localRemovalFailed = !storageManager.removeFile(file, false, true)
+            if (!localRemovalFailed) {
+                result = RemoteOperationResult<Any?>(RemoteOperationResult.ResultCode.OK)
+            }
+        } else {
             operation = if (file.isEncrypted) {
                 val parent = storageManager.getFileById(file.parentId)
                 if (parent == null) {
@@ -82,11 +88,6 @@ class RemoveFileOperation(
             if (result.isSuccess || result.code == RemoteOperationResult.ResultCode.FILE_NOT_FOUND) {
                 localRemovalFailed = !storageManager.removeFile(file, true, true)
             }
-        } else {
-            localRemovalFailed = !storageManager.removeFile(file, false, true)
-            if (!localRemovalFailed) {
-                result = RemoteOperationResult<Any?>(RemoteOperationResult.ResultCode.OK)
-            }
         }
 
         if (localRemovalFailed) {