8.6

Folder tree cache (optional) while MegaBasterd is running in order to speed up very (VEEEERY) big file folders.

pom.xml

@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.tonikelope</groupId>
     <artifactId>MegaBasterd</artifactId>
-    <version>8.5</version>
+    <version>8.6</version>
     <packaging>jar</packaging>
     <repositories>
         <repository>

src/main/java/com/tonikelope/megabasterd/FolderLinkDialog.java

@@ -430,6 +430,19 @@ private int _loadMegaDirTree() {
 
             String folder_id = findFirstRegex("#F!([^!]+)", _link, 1);
 
+            int r = -1;
+
+            if (ma.existsCachedFolderNodes(folder_id)) {
+                r = JOptionPane.showConfirmDialog(this, "Do you want to use FOLDER CACHED VERSION?\n\n(It could speed up the loading of very large folders)", "FOLDER CACHE", JOptionPane.YES_NO_OPTION);
+
+            }
+
+            if (r == 0) {
+                MiscTools.GUIRun(() -> {
+                    folder_link_label.setText(_link + " (CACHED VERSION)");
+                });
+            }
+
             String subfolder_id = null;
 
             if (folder_id.contains("@")) {
@@ -443,7 +456,7 @@ private int _loadMegaDirTree() {
 
             String folder_key = findFirstRegex("#F![^!]+!(.+)", _link, 1);
 
-            folder_nodes = ma.getFolderNodes(folder_id, folder_key, node_bar);
+            folder_nodes = ma.getFolderNodes(folder_id, folder_key, node_bar, (r == 0));
 
             MegaMutableTreeNode root = null;
 

src/main/java/com/tonikelope/megabasterd/MainPanel.java

@@ -70,7 +70,7 @@
  */
 public final class MainPanel {
 
-    public static final String VERSION = "8.5";
+    public static final String VERSION = "8.6";
     public static final boolean FORCE_SMART_PROXY = false; //TRUE FOR DEBUGING SMART PROXY
     public static final int THROTTLE_SLICE_SIZE = 16 * 1024;
     public static final int DEFAULT_BYTE_BUFFER_SIZE = 16 * 1024;
@@ -924,6 +924,8 @@ public boolean checkByeBye() {
 
     public void byebyenow(boolean restart) {
 
+        MiscTools.purgeFolderCache();
+
         synchronized (DBTools.class) {
 
             try {

src/main/java/com/tonikelope/megabasterd/MegaAPI.java

@@ -26,6 +26,7 @@
 import java.net.Proxy;
 import java.net.URL;
 import java.nio.file.Files;
+import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
@@ -1049,15 +1050,62 @@ public String cryptoHandleauth(String h) {
         return ch;
     }
 
-    public HashMap<String, Object> getFolderNodes(String folder_id, String folder_key, JProgressBar bar) throws Exception {
+    public boolean existsCachedFolderNodes(String folder_id) {
+        return Files.exists(Path.of(System.getProperty("java.io.tmpdir") + File.separator + "megabasterd_folder_cache_" + folder_id));
+    }
+
+    private String getCachedFolderNodes(String folder_id) {
+
+        String file_path = System.getProperty("java.io.tmpdir") + File.separator + "megabasterd_folder_cache_" + folder_id;
+
+        if (Files.exists(Path.of(file_path))) {
+
+            LOG.log(Level.INFO, "MEGA FOLDER {0} USING CACHED JSON FILE TREE", new Object[]{folder_id});
+
+            try {
+                return Files.readString(Path.of(file_path));
+            } catch (IOException ex) {
+                Logger.getLogger(MegaAPI.class.getName()).log(Level.SEVERE, null, ex);
+            }
+        }
+
+        return null;
+    }
+
+    private void writeCachedFolderNodes(String folder_id, String res) {
+        String file_path = System.getProperty("java.io.tmpdir") + File.separator + "megabasterd_folder_cache_" + folder_id;
+
+        try {
+            Files.writeString(Path.of(file_path), res);
+        } catch (IOException ex) {
+            Logger.getLogger(MegaAPI.class.getName()).log(Level.SEVERE, null, ex);
+        }
+    }
+
+    public HashMap<String, Object> getFolderNodes(String folder_id, String folder_key, JProgressBar bar, boolean cache) throws Exception {
 
         HashMap<String, Object> folder_nodes = null;
 
-        String request = "[{\"a\":\"f\", \"c\":\"1\", \"r\":\"1\", \"ca\":\"1\"}]";
+        String res = null;
 
-        URL url_api = new URL(API_URL + "/cs?id=" + String.valueOf(_seqno) + "&n=" + folder_id);
+        if (cache) {
+            res = getCachedFolderNodes(folder_id);
+        }
 
-        String res = RAW_REQUEST(request, url_api);
+        if (res == null) {
+
+            String request = "[{\"a\":\"f\", \"c\":\"1\", \"r\":\"1\", \"ca\":\"1\"}]";
+
+            URL url_api = new URL(API_URL + "/cs?id=" + String.valueOf(_seqno) + "&n=" + folder_id);
+
+            res = RAW_REQUEST(request, url_api);
+
+            if (res != null) {
+                writeCachedFolderNodes(folder_id, res);
+            }
+        }
+
+        LOG.log(Level.INFO, "MEGA FOLDER {0} JSON FILE TREE SIZE -> {1}", new Object[]{folder_id, MiscTools.formatBytes((long) res.length())});
 
         if (res != null) {
 

src/main/java/com/tonikelope/megabasterd/MiscTools.java

@@ -156,6 +156,17 @@ public static String computeFileSHA1(File file) throws IOException {
         return null;
     }
 
+    public static void purgeFolderCache() {
+        File directory = new File(System.getProperty("java.io.tmpdir"));
+
+        for (File f : directory.listFiles()) {
+            if (f.isFile() && f.getName().startsWith("megabasterd_folder_cache_")) {
+                f.delete();
+                Logger.getLogger(MiscTools.class.getName()).log(Level.INFO, "REMOVING FOLDER CACHE FILE {0}", f.getAbsolutePath());
+            }
+        }
+    }
+
     public static void containerSetEnabled(Container panel, boolean enabled) {
 
         for (Component cp : panel.getComponents()) {