#14 Restoring original assets content if there is changed one

core/src/cz/nic/tablexia/loader/zip/ZipAssetLoader.java

@@ -68,7 +68,14 @@ public class ZipAssetLoader extends TablexiaDataManager<Void> implements IApplic
             String extractDestinationDirectory = TablexiaAbstractFileManager.getFileStoragePath(TablexiaAbstractFileManager.AssetsStorageType.EXTERNAL);
 
             if (buildChecksum == null || !checkAssets(buildChecksum.get(language), extractDestinationDirectory)) {
+                File eddFile = new File(extractDestinationDirectory);
+                if (eddFile.exists()) {
+                    Log.info(getClass(), "Assets check FAILED! --> Deleting content under: " + extractDestinationDirectory);
+                    deleteDirectory(eddFile);
+                }
+
                 Log.info(getClass(), "Assets check FAILED! --> Extracting new assets to: " + extractDestinationDirectory);
+
                 unzip(ZIP_FILES_STORAGE_TYPE.getResolver().resolve(ZIP_FILES_STORAGE_TYPE.getStoragePath() + commonZipFile), extractDestinationDirectory);
                 unzip(ZIP_FILES_STORAGE_TYPE.getResolver().resolve(ZIP_FILES_STORAGE_TYPE.getStoragePath() + localisedZipFile), extractDestinationDirectory);
             } else {
@@ -112,6 +119,23 @@ public class ZipAssetLoader extends TablexiaDataManager<Void> implements IApplic
                 zipInputStream.close();
             }
         }
+
+        public static boolean deleteDirectory(File directory) {
+            if(directory.exists()) {
+                File[] files = directory.listFiles();
+
+                if(files != null) {
+                    for(int i=0; i < files.length; i++) {
+                        if(files[i].isDirectory()) {
+                            deleteDirectory(files[i]);
+                        } else {
+                            files[i].delete();
+                        }
+                    }
+                }
+            }
+            return(directory.delete());
+        }
 	}
 	
 	public void load(Locale locale, Map<String, String> buildChecksum) {