From b9599a7a5a11894101660673474928167187decd Mon Sep 17 00:00:00 2001
From: Robert Vokac <mail@robertvokac.com>
Date: Sat, 14 Sep 2024 08:22:33 +0200
Subject: [PATCH] Bug 14: Refactor, improve and finish the Storage api

---
 .../backend/libgdx/PixelBackendLibGDX.java    |  7 +-
 .../backend/libgdx/UtilsLibGDXImpl.java       | 68 ++++++++++++++++++-
 2 files changed, 68 insertions(+), 7 deletions(-)

diff --git a/src/main/java/com/pixelgamelibrary/backend/libgdx/PixelBackendLibGDX.java b/src/main/java/com/pixelgamelibrary/backend/libgdx/PixelBackendLibGDX.java
index e4ca27b..4a3df3a 100644
--- a/src/main/java/com/pixelgamelibrary/backend/libgdx/PixelBackendLibGDX.java
+++ b/src/main/java/com/pixelgamelibrary/backend/libgdx/PixelBackendLibGDX.java
@@ -19,11 +19,6 @@
 ///////////////////////////////////////////////////////////////////////////////////////////////
 package com.pixelgamelibrary.backend.libgdx;
 
-import com.badlogic.gdx.Application;
-import static com.badlogic.gdx.Application.ApplicationType.Desktop;
-import com.badlogic.gdx.Gdx;
-import com.pixelgamelibrary.api.PixelException;
-import com.pixelgamelibrary.api.Platform;
 import com.pixelgamelibrary.api.interfaces.AppI;
 import com.pixelgamelibrary.api.interfaces.AssetI;
 import com.pixelgamelibrary.api.interfaces.AudioI;
@@ -107,7 +102,7 @@ public class PixelBackendLibGDX implements PixelBackend {
     public UtilsI utils() {
 
         if (pixelUtilsLibGdxImpl == null) {
-            pixelUtilsLibGdxImpl = new UtilsLibGDXImpl();
+            pixelUtilsLibGdxImpl = new UtilsLibGDXImpl(app());
         }
         return pixelUtilsLibGdxImpl;    }
 
diff --git a/src/main/java/com/pixelgamelibrary/backend/libgdx/UtilsLibGDXImpl.java b/src/main/java/com/pixelgamelibrary/backend/libgdx/UtilsLibGDXImpl.java
index 3bbc9fe..2b24108 100644
--- a/src/main/java/com/pixelgamelibrary/backend/libgdx/UtilsLibGDXImpl.java
+++ b/src/main/java/com/pixelgamelibrary/backend/libgdx/UtilsLibGDXImpl.java
@@ -23,6 +23,14 @@ import com.badlogic.gdx.utils.Base64Coder;
 import com.badlogic.gdx.utils.XmlReader;
 import com.pixelgamelibrary.api.interfaces.XmlElement;
 import com.pixelgamelibrary.api.interfaces.UtilsI;
+import java.util.List;
+import java.util.Map;
+import com.badlogic.gdx.utils.compression.Lzma;
+import com.pixelgamelibrary.api.PixelException;
+import com.pixelgamelibrary.api.interfaces.AppI;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
 
 /**
  *
@@ -30,6 +38,12 @@ import com.pixelgamelibrary.api.interfaces.UtilsI;
  */
 public class UtilsLibGDXImpl implements UtilsI {
 
+    private final AppI appI;
+
+    public UtilsLibGDXImpl(AppI appI) {
+        this.appI = appI;
+    }
+
     @Override
     public XmlElement parseXml(String xmlString) {
         XmlReader.Element root = new XmlReader().parse(xmlString);
@@ -44,6 +58,58 @@ public class UtilsLibGDXImpl implements UtilsI {
     public String encodeToBase64(byte[] data) {
         return String.valueOf(Base64Coder.encode(data));
     }
-   
+
+    @Override
+    public List<String> listSupportedCompressions() {
+        throw new UnsupportedOperationException("Not supported yet."); // Generated from nbfs://nbhost/SystemFileSystem/Templates/Classes/Code/GeneratedMethodBody
+    }
+
+    @Override
+    public byte[] compress(byte[] data, String compression, Map<String, String> arguments) {
+        switch (compression) {
+            case "LZMA": {
+                try {
+                    return compressLzma(data);
+                } catch (IOException ex) {
+                    appI.error(ex.getMessage());
+                    throw new PixelException(ex.getMessage());
+                }
+            }
+
+            default:
+                throw new UnsupportedOperationException("This type of compression is not supported: " + compression);
+        }
+
+    }
+
+    @Override
+    public byte[] decompress(byte[] data, String compression) {
+        switch (compression) {
+            case "LZMA": {
+                try {
+                    return decompressLzma(data);
+                } catch (IOException ex) {
+                    appI.error(ex.getMessage());
+                    throw new PixelException(ex.getMessage());
+                }
+            }
+
+            default:
+                throw new UnsupportedOperationException("This type of compression is not supported: " + compression);
+        }
+    }
+
+    public byte[] compressLzma(byte[] data) throws IOException {
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        Lzma.compress(new ByteArrayInputStream(data), outputStream);
+        return outputStream.toByteArray();
+    }
+
+    public byte[] decompressLzma(byte[] compressedData) throws IOException {
+        ByteArrayInputStream inputStream = new ByteArrayInputStream(compressedData);
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        Lzma.decompress(inputStream, outputStream);
+        return outputStream.toByteArray();
+    }
 
 }