basically done :D

Author: not-coded

build.gradle

@@ -1,21 +1,20 @@
 plugins {
     id 'java'
-    id 'maven-publish'
     id "com.github.johnrengelman.shadow" version "7.0.0"
     id "de.undercouch.download" version "4.1.2"
 }
 
+sourceCompatibility = JavaVersion.VERSION_1_8
+targetCompatibility = JavaVersion.VERSION_1_8
+
 group = 'com.nexia'
-version = '1.0-SNAPSHOT'
+version = '1.0.0'
 
 repositories {
     mavenCentral()
 }
 
 dependencies {
-    testImplementation platform('org.junit:junit-bom:5.9.1')
-    testImplementation 'org.junit.jupiter:junit-jupiter'
-
     implementation ('org.sharegov:mjson:1.4.1') {
         transitive false
     }
@@ -33,9 +32,4 @@ shadowJar {
     exclude('icon.ico')
 }
 
-build.dependsOn shadowJar
-test {
-    useJUnitPlatform()
-}
-sourceCompatibility = JavaVersion.VERSION_11
-targetCompatibility = JavaVersion.VERSION_11
+build.dependsOn shadowJar

src/main/java/com/nexia/installer/InstallerGUI.java

@@ -11,9 +11,8 @@
 public class InstallerGUI extends JFrame {
     public static InstallerGUI instance;
 
-    private InstallerHelper helper = new InstallerHelper();
-
     public InstallerGUI() {
+        InstallerHelper helper = new InstallerHelper();
         JPanel panel = helper.setPanel(this);
 
         setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
@@ -46,7 +45,7 @@ public static void load() throws UnsupportedLookAndFeelException, ClassNotFoundE
         InstallerGUI gui = new InstallerGUI();
         gui.updateSize(true);
         gui.setTitle(Main.BUNDLE.getString("installer.title"));
-        gui.setIconImage(Toolkit.getDefaultToolkit().getImage(ClassLoader.getSystemClassLoader().getResource("icon.png")));
+        gui.setIconImage(Main.icon);
         gui.setLocationRelativeTo(null);
         gui.setVisible(true);
     }

src/main/java/com/nexia/installer/Main.java

@@ -1,6 +1,7 @@
 package com.nexia.installer;
 
 import javax.swing.*;
+import java.awt.*;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
@@ -13,6 +14,8 @@ public class Main {
 
     public static OS os = null;
 
+    public static Image icon;
+
     public static final ResourceBundle BUNDLE = ResourceBundle.getBundle("lang/installer", Locale.getDefault(), new ResourceBundle.Control() {
         @Override
         public ResourceBundle newBundle(String baseName, Locale locale, String format, ClassLoader loader, boolean reload) throws IllegalAccessException, InstantiationException, IOException {
@@ -44,6 +47,7 @@ public static void main(String[] args) throws UnsupportedLookAndFeelException, C
         if(System.getProperty("os.name").startsWith("mac"))
             os = OS.MAC;
 
+        icon = Toolkit.getDefaultToolkit().getImage(ClassLoader.getSystemClassLoader().getResource("icon.png"));
         InstallerGUI.load();
     }
 

src/main/java/com/nexia/installer/game/VersionHandler.java

@@ -1,15 +1,28 @@
 package com.nexia.installer.game;
+
 import java.util.ArrayList;
 import java.util.List;
 
 public class VersionHandler {
     public static List<GameVersion> versions = new ArrayList<>();
 
-    public static GameVersion CombatTest8c = new GameVersion("Combat Test 8c", "1.16_combat-6", new Download("9879e6ba375eda28ab8fc3b83ca9febe5c11d54b", (long) 7.463, "https://www.rizecookey.net/dl/file/combat-test-patched/1_16_combat-6.zip"));
+    public static GameVersion CombatTest8c = new GameVersion("Combat Test 8c", "1.16_combat-6", new Download("f76157734ee0611fbef7d636156f20fa67c34514", 7463, "https://www.rizecookey.net/dl/file/combat-test-patched/1_16_combat-6.zip"));
+
+    public static GameVersion CombatTest8b = new GameVersion("Combat Test 8b", "1.16_combat-5", new Download("9b2b984d635d373564b50803807225c75d7fd447", 7044, "https://launcher.mojang.com/experiments/combat/9b2b984d635d373564b50803807225c75d7fd447/1_16_combat-5.zip"));
+
+    public static GameVersion CombatTest8 = new GameVersion("Combat Test 8", "1.16_combat-4", new Download("b4306b421183bd084b2831bd8d33a5db05ae9f9c", 7046, "https://cdn.discordapp.com/attachments/369990015096455168/947864881028272198/1_16_combat-4.zip"));
+
+    public static GameVersion CombatTest7c = new GameVersion("Combat Test 7c", "1.16_combat-3", new Download("2557b99d95588505e988886220779087d7d6b1e9", 7049, "https://piston-data.mojang.com/experiments/combat/2557b99d95588505e988886220779087d7d6b1e9/1_16_combat-3.zip"));
 
-    public static GameVersion CombatTest8b = new GameVersion("Combat Test 8b", "1.16_combat-5", new Download("05b81ee7c117524580c477900277c316d3436e94", (long) 7.044, "https://launcher.mojang.com/experiments/combat/9b2b984d635d373564b50803807225c75d7fd447/1_16_combat-5.zip"));
+    public static GameVersion CombatTest7b = new GameVersion("Combat Test 7b", "1.16_combat-2", new Download("43266ea8f2c20601d9fb264d5aa85df8052abc9e", 7051, "https://archive.org/download/Combat_Test_7ab/1_16_combat-2.zip"));
+    public static GameVersion CombatTest7 = new GameVersion("Combat Test 7", "1.16_combat-1", new Download("47bb5be6cb3ba215539ee97dfae66724c73c3dd5", 7045, "https://archive.org/download/Combat_Test_7ab/1_16_combat-1.zip"));
 
-    public static GameVersion CombatTest8 = new GameVersion("Combat Test 8", "1.16_combat-4", new Download("d8d9dd198d0a46435c3d1eac75633a387392d793", (long) 7.046, "https://cdn.discordapp.com/attachments/369990015096455168/947864881028272198/1_16_combat-4.zip"));
+    public static GameVersion CombatTest6 = new GameVersion("Combat Test 6", "1.16_combat-0", new Download("5a8ceec8681ed96ab6ecb9607fb5d19c8a755559", 7049, "https://piston-data.mojang.com/experiments/combat/5a8ceec8681ed96ab6ecb9607fb5d19c8a755559/1_16_combat-0.zip"));
+    public static GameVersion CombatTest5 = new GameVersion("Combat Test 5", "1.15_combat-6", new Download("52263d42a626b40c947e523128f7a195ec5af76a", 7061, "https://piston-data.mojang.com/experiments/combat/52263d42a626b40c947e523128f7a195ec5af76a/1_15_combat-6.zip"));
+    public static GameVersion CombatTest4 = new GameVersion("Combat Test 4", "1.15_combat-1", new Download("ac11ea96f3bb2fa2b9b76ab1d20cacb1b1f7ef60", 7059, "https://piston-data.mojang.com/experiments/combat/ac11ea96f3bb2fa2b9b76ab1d20cacb1b1f7ef60/1_15_combat-1.zip"));
+    public static GameVersion CombatTest3 = new GameVersion("Combat Test 3", "1.14_combat-3", new Download("0f209c9c84b81c7d4c88b4632155b9ae550beb89", 6433, "https://piston-data.mojang.com/experiments/combat/0f209c9c84b81c7d4c88b4632155b9ae550beb89/1_14_combat-3.zip"));
+    public static GameVersion CombatTest2 = new GameVersion("Combat Test 2", "1.14_combat-0", new Download("d164bb6ecc5fca9ac02878c85f11befae61ac1ca", 6287, "https://piston-data.mojang.com/experiments/combat/d164bb6ecc5fca9ac02878c85f11befae61ac1ca/1_14_combat-0.zip"));
+    public static GameVersion CombatTest1 = new GameVersion("1.14.3 - Combat Test", "1.14_combat-212796", new Download("610f5c9874ba8926d5ae1bcce647e5f0e6e7c889",4843, "https://piston-data.mojang.com/experiments/combat/610f5c9874ba8926d5ae1bcce647e5f0e6e7c889/1_14_combat-212796.zip"));
 
     public static class GameVersion {
         String version;

src/main/java/com/nexia/installer/util/InstallerUtils.java

@@ -4,18 +4,17 @@
 import com.nexia.installer.game.VersionHandler;
 
 import javax.swing.*;
+import java.awt.*;
 import java.io.File;
+import java.io.IOException;
 import java.net.URI;
+import java.net.URISyntaxException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.nio.file.StandardCopyOption;
-import java.nio.file.attribute.FileAttribute;
-import java.nio.file.attribute.FileAttributeView;
-import java.nio.file.attribute.PosixFilePermission;
-import java.nio.file.attribute.PosixFilePermissions;
+import java.text.MessageFormat;
 import java.util.List;
-import java.util.Set;
 
 public class InstallerUtils {
     public static Path findDefaultInstallDir() {
@@ -73,20 +72,31 @@ public static void install(Path mcDir, VersionHandler.GameVersion gameVersion) {
 
                String alternativeCodeName = gameVersion.getCodeName().replaceAll("\\.", "_");
 
+               System.out.println("Installing " + gameVersion.getVersion() + " (" + gameVersion.getCodeName() + ")");
+
                Path versionsDir = mcDir.resolve("versions");
-               Path profileDir = versionsDir.resolve(alternativeCodeName);
-               Path profileJson = profileDir.resolve(alternativeCodeName + ".json");
+               Path profileDir = versionsDir.resolve(gameVersion.getCodeName());
+               Path profileJson = profileDir.resolve(gameVersion.getCodeName() + ".json");
 
-               if (!Files.exists(profileDir)) {
-                   Files.createDirectory(profileDir);
-                   Files.createFile(profileJson);
-               }
+               Path aProfileDir = versionsDir.resolve(alternativeCodeName);
+               Path aProfileJson = aProfileDir.resolve(alternativeCodeName + ".json");
+
+               if(!Files.exists(profileDir)) Files.createDirectory(profileDir);
+               if(!Files.exists(profileJson)) Files.createFile(profileJson);
+
+               if(!Files.exists(aProfileDir)) Files.createDirectory(aProfileDir);
+               if(!Files.exists(aProfileJson)) Files.createFile(aProfileJson);
 
                File zipFile = new File(versionsDir + "/" + gameVersion.getCodeName() + ".zip");
 
                Utils.downloadFile(URI.create(gameVersion.getDownload().url).toURL(), zipFile.toPath());
                Utils.extractZip(zipFile.toPath(), versionsDir);
 
+               Files.copy(aProfileJson, profileJson, StandardCopyOption.REPLACE_EXISTING);
+
+
+               aProfileJson.toFile().delete();
+               aProfileDir.toFile().delete();
                zipFile.delete();
 
                if (InstallerHelper.createProfile.isSelected()) {
@@ -96,6 +106,7 @@ public static void install(Path mcDir, VersionHandler.GameVersion gameVersion) {
 
                    profileInstaller.setupProfile(gameVersion.getCodeName(), gameVersion.getVersion(), launcherType);
                }
+               showDone(gameVersion);
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
@@ -123,4 +134,19 @@ private static ProfileInstaller.LauncherType showLauncherTypeSelection() {
 
         return result == JOptionPane.YES_OPTION ? ProfileInstaller.LauncherType.MICROSOFT_STORE : ProfileInstaller.LauncherType.WIN32;
     }
+
+    private static void showDone(VersionHandler.GameVersion gameVersion) throws URISyntaxException, IOException {
+        Object[] options = {"OK", "Install Fabric"};
+        int result = JOptionPane.showOptionDialog(null,
+                MessageFormat.format(Main.BUNDLE.getString("installer.prompt.install.done"), gameVersion.getVersion()),
+                Main.BUNDLE.getString("installer.title"),
+                JOptionPane.YES_NO_OPTION,
+                JOptionPane.INFORMATION_MESSAGE,
+                null,
+                options,
+                options[0]
+        );
+
+        if(result == JOptionPane.NO_OPTION && Desktop.isDesktopSupported() && Desktop.getDesktop().isSupported(Desktop.Action.BROWSE)) Desktop.getDesktop().browse(new URI("https://github.com/rizecookey/fabric-installer/releases"));
+    }
 }

src/main/java/com/nexia/installer/util/ProfileInstaller.java

@@ -58,16 +58,14 @@ public void setupProfile(String name, String gameVersion, LauncherType launcherT
             jsonObject.set("profiles", profiles);
         }
 
-        String profileName = "pending " + name;
-
-        Json profile = profiles.at(profileName);
+        Json profile = profiles.at(name);
 
         if (profile == null) {
             profile = createProfile(gameVersion);
-            profiles.set(profileName, profile);
+            profiles.set(name, profile);
         }
 
-        profile.set("lastVersionId", profileName);
+        profile.set("lastVersionId", name);
 
         Utils.writeToFile(launcherProfiles, jsonObject.toString());
     }

src/main/java/com/nexia/installer/util/Utils.java

@@ -20,13 +20,8 @@
 public class Utils {
 
     public static final DateFormat ISO_8601 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
-    public static String readString(URL url) throws IOException {
-        try (InputStream is = openUrl(url)) {
-            return readString(is);
-        }
-    }
 
-    public static File extractZip(Path file, Path path) throws IOException {
+    public static void extractZip(Path file, Path path) throws IOException {
         ZipInputStream zipIn = new ZipInputStream(Files.newInputStream(Paths.get(file.toString())));
         ZipEntry entry = zipIn.getNextEntry();
         String filePath = "";
@@ -50,33 +45,12 @@ public static File extractZip(Path file, Path path) throws IOException {
             entry = zipIn.getNextEntry();
         }
         zipIn.close();
-        return new File(filePath);
     }
 
     public static String readString(Path path) throws IOException {
         return new String(Files.readAllBytes(path), StandardCharsets.UTF_8);
     }
 
-    public static String readString(InputStream is) throws IOException {
-        byte[] data = new byte[Math.max(1000, is.available())];
-        int offset = 0;
-        int len;
-
-        while ((len = is.read(data, offset, data.length - offset)) >= 0) {
-            offset += len;
-
-            if (offset == data.length) {
-                int next = is.read();
-                if (next < 0) break;
-
-                data = Arrays.copyOf(data, data.length * 2);
-                data[offset++] = (byte) next;
-            }
-        }
-
-        return new String(data, 0, offset, StandardCharsets.UTF_8);
-    }
-
     public static void writeToFile(Path path, String string) throws IOException {
         Files.write(path, string.getBytes(StandardCharsets.UTF_8));
     }

src/main/resources/lang/installer.properties

@@ -1,6 +1,7 @@
 installer.prompt.game.version=Minecraft Version:
 installer.prompt.select.location=Select Install Location:
 installer.button.install=Install
+installer.prompt.install.done={0} has been installed, if you want to install fabric then click on the "Install Fabric" button.
 installer.exception.no.launcher.directory=No launcher directory found!
 installer.prompt.launcher.type.body=The Combat Test Installer has detected 2 different installations of the Minecraft Launcher, which launcher do you wish to install Fabric to?\n\n- Select Microsoft Store if you are playing Minecraft through the Xbox App or the Windows Store.\n- Select Standalone if you downloaded the Minecraft launcher directly from the Minecraft.net website.\n\nIf you are unsure try the Microsoft Store option first, you can always re-run the installer.
 installer.prompt.launcher.type.xbox=Microsoft Store / Xbox