From a16f67163017499c354a8d5babed8dca0e905551 Mon Sep 17 00:00:00 2001
From: Michal <michal@cucky.cz>
Date: Thu, 23 May 2024 14:59:03 +0200
Subject: [PATCH] Add Main.java

---
 Main.java | 154 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 154 insertions(+)
 create mode 100644 Main.java

diff --git a/Main.java b/Main.java
new file mode 100644
index 0000000..b919db5
--- /dev/null
+++ b/Main.java
@@ -0,0 +1,154 @@
+package updater;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.nio.file.FileSystem;
+import java.nio.file.FileSystems;
+import java.nio.file.Files;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+import javax.imageio.ImageIO;
+import javax.swing.SwingUtilities;
+
+public class Main {
+
+    private static final String windowTitle = "Network Control Update";
+    private static final String url = "http://10.10.0.52/radek/test.zip";
+    private static final String jarApp = "NetworkControlClient.jar";
+
+    private static Window okno = new Window();
+
+    public static void main(String[] args) {
+        okno.setTitle(windowTitle);
+        okno.setLocationRelativeTo(null);
+        okno.setVisible(true);
+
+        try {
+            okno.setIconImage(ImageIO.read(new File("img/app.png")));
+        } catch (IOException ex) {
+            System.err.println("APP icon exception");
+        }
+
+        Thread t = new Thread() {
+            @Override
+            public void run() {
+                super.run();
+                // stahovani aktualizacniho souboru
+                System.out.print("Stahovani souboru ...");
+                Window.label.setText("Stahování aktualizace ...");
+                download(url);
+                System.out.println(" hotovo");
+
+                // rozbaleni souboru
+                System.out.print("Aktualizace ...");
+                Window.label.setText("Aktualizace ...");
+                unZipIt("update.zip");
+                System.out.println(" hotovo");
+                
+                // spusteni programu po aktualizaci
+                launch(jarApp);
+                
+                // ukonceni programu 
+                System.exit(0);
+            }
+        ;
+        };
+        t.run();
+        
+        
+    }
+    
+    private static void download(String urlFile){
+        try {
+                    URL url = new URL(urlFile);
+                    HttpURLConnection httpConnection = (HttpURLConnection) (url.openConnection());
+                    // zjisteni veliksoti souboru
+                    long completeFileSize = httpConnection.getContentLength();
+                    // nastaveni velikosti progress bar
+                    Window.pb.setMaximum((int) completeFileSize);
+                    // stahovani 
+                    BufferedInputStream in = new BufferedInputStream(httpConnection.getInputStream());
+                    FileOutputStream fos = new FileOutputStream("update.zip");
+                    BufferedOutputStream bout = new BufferedOutputStream(fos, 1024);
+                    byte[] data = new byte[1024];
+                    long downloadedFileSize = 0;
+                    int x = 0;
+                    while ((x = in.read(data, 0, 1024)) >= 0) {
+                        downloadedFileSize += x;
+                        // vypocet progressu
+                        final int currentProgress = (int) downloadedFileSize;
+                        // update progress bar
+                        SwingUtilities.invokeLater(new Runnable() {
+                            @Override
+                            public void run() {
+                                Window.pb.setValue(currentProgress);
+                            }
+                        });
+                        bout.write(data, 0, x);
+                    }
+                    bout.close();
+                    in.close();
+                } catch (Exception ex) {
+                    Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
+                }
+    }
+
+    public static void unZipIt(String zipFile) {
+
+        byte[] buffer = new byte[1024];
+
+        try {
+
+            //get the zip file content
+            ZipInputStream zis = new ZipInputStream(new FileInputStream(zipFile));
+            //get the zipped file list entry
+            ZipEntry ze = zis.getNextEntry();
+
+            while (ze != null) {
+                if (ze.isDirectory()) {
+                    System.out.println("Creating Directory:" + ze.getName());
+                    FileSystem fileSystem = FileSystems.getDefault();
+                    Files.createDirectories(fileSystem.getPath(ze.getName()));
+                } else {
+                    String fileName = ze.getName();
+                    File newFile = new File(fileName);
+
+                    System.out.println("file unzip : " + newFile.getAbsoluteFile());
+
+                    FileOutputStream fos = new FileOutputStream(newFile);
+                    int len;
+                    while ((len = zis.read(buffer)) > 0) {
+                        fos.write(buffer, 0, len);
+                    }
+
+                    fos.close();
+
+                }
+                ze = zis.getNextEntry();
+            }
+
+            zis.closeEntry();
+            zis.close();
+        } catch (IOException ex) {
+            ex.printStackTrace();
+        }
+    }
+    
+    private static void launch(String jar) {
+        String[] run = {"java", "-jar", jar};
+        try {
+            Runtime.getRuntime().exec(run);
+        } catch (Exception ex) {
+            ex.printStackTrace();
+        }
+    }
+
+}