Revamp UI system, improve UpdateManager

build.gradle

@@ -9,6 +9,7 @@ dependencies {
 	implementation 'commons-cli:commons-cli:1.4'
 	implementation 'com.moandjiezana.toml:toml4j:0.7.2'
     //testImplementation 'junit:junit:4.12'
+    // TODO: add GSON, as toml4j depends on it anyway
 }
 
 repositories {
@@ -34,3 +35,12 @@ shadowJar {
        exclude(dependency('com.eclipsesource.minimal-json:minimal-json:0.9.5'))
    }
 }
+
+// Used for vscode launch.json
+task copyJar(type: Copy) {
+    from shadowJar
+    rename "packwiz-installer-(.*)\\.jar", "packwiz-installer.jar"
+    into "build/libs/"
+}
+
+build.dependsOn copyJar

src/main/java/link/infra/packwiz/installer/CLIHandler.java

@@ -0,0 +1,13 @@
+package link.infra.packwiz.installer;
+
+public class CLIHandler implements IUserInterface {
+
+	@Override
+	public void handleException(Exception e) {
+		e.printStackTrace();
+	}
+
+	@Override
+	public void show() {}
+	
+}

src/main/java/link/infra/packwiz/installer/IUserInterface.java

@@ -0,0 +1,16 @@
+package link.infra.packwiz.installer;
+
+public interface IUserInterface {
+	
+	public void show();
+
+	public void handleException(Exception e);
+	
+	public default void handleExceptionAndExit(Exception e) {
+		handleException(e);
+		System.exit(1);
+	};
+	
+	public default void setTitle(String title) {};
+	
+}

src/main/java/link/infra/packwiz/installer/InstallWindow.java

@@ -9,6 +9,7 @@ import java.awt.GridBagLayout;
 import javax.swing.JButton;
 import javax.swing.JFrame;
 import javax.swing.JLabel;
+import javax.swing.JOptionPane;
 import javax.swing.JPanel;
 import javax.swing.JProgressBar;
 import javax.swing.UIManager;
@@ -16,23 +17,19 @@ import javax.swing.border.EmptyBorder;
 import java.awt.event.ActionListener;
 import java.awt.event.ActionEvent;
 
-public class InstallWindow {
-	
-	// TODO: move to seperate file, make usable without GUI
+public class InstallWindow implements IUserInterface {
 
 	private JFrame frmPackwizlauncher;
-	private UpdateManager updateManager = new UpdateManager();
+	private String title = "Updating modpack...";
 
-	/**
-	 * Launch the application.
-	 */
-	public static void main(String[] args) {
+	@Override
+	public void show() {
 		EventQueue.invokeLater(new Runnable() {
 			public void run() {
 				try {
 					UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
-					InstallWindow window = new InstallWindow();
-					window.frmPackwizlauncher.setVisible(true);
+					InstallWindow.this.initialize();
+					InstallWindow.this.frmPackwizlauncher.setVisible(true);
 				} catch (Exception e) {
 					e.printStackTrace();
 				}
@@ -40,19 +37,12 @@ public class InstallWindow {
 		});
 	}
 
-	/**
-	 * Create the application.
-	 */
-	public InstallWindow() {
-		initialize();
-	}
-
 	/**
 	 * Initialize the contents of the frame.
 	 */
 	private void initialize() {
 		frmPackwizlauncher = new JFrame();
-		frmPackwizlauncher.setTitle("Updating modpack...");
+		frmPackwizlauncher.setTitle(title);
 		frmPackwizlauncher.setBounds(100, 100, 493, 95);
 		frmPackwizlauncher.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 		frmPackwizlauncher.setLocationRelativeTo(null);
@@ -85,7 +75,7 @@ public class InstallWindow {
 		JButton btnCancel = new JButton("Cancel");
 		btnCancel.addActionListener(new ActionListener() {
 			public void actionPerformed(ActionEvent arg0) {
-				updateManager.cleanup();
+				//updateManager.cleanup();
 				frmPackwizlauncher.dispose();
 			}
 		});
@@ -96,4 +86,21 @@ public class InstallWindow {
 		panel_1.add(btnCancel, gbc_btnCancel);
 	}
 
+	@Override
+	public void handleException(Exception e) {
+		JOptionPane.showMessageDialog(null, e.getMessage(), title, JOptionPane.ERROR_MESSAGE);
+	}
+	
+	@Override
+	public void setTitle(String title) {
+		this.title = title;
+		if (frmPackwizlauncher != null) {
+			EventQueue.invokeLater(new Runnable() {
+				public void run() {
+					InstallWindow.this.frmPackwizlauncher.setTitle(title);
+				}
+			});
+		}
+	}
+
 }

src/main/java/link/infra/packwiz/installer/Main.java

@@ -33,12 +33,38 @@ public class Main {
 			System.exit(1);
 		}
 		
-		System.out.println("Hello World!");
+		IUserInterface ui;
+		if (cmd.hasOption("no-gui")) {
+			ui = new CLIHandler();
+		} else {
+			ui = new InstallWindow();
+		}
+		
+		String[] unparsedArgs = cmd.getArgs();
+		if (unparsedArgs.length > 1) {
+			ui.handleExceptionAndExit(new RuntimeException("Too many arguments specified!"));
+		} else if (unparsedArgs.length < 1) {
+			ui.handleExceptionAndExit(new RuntimeException("URI to install from must be specified!"));
+		}
+		
+		String title = cmd.getOptionValue("title");
+		if (title != null) {
+			ui.setTitle(title);
+		}
+		
+		String side = cmd.getOptionValue("side");
+		if (side == null) {
+			side = "client";
+		}
+
+		ui.show();
+		
 	}
 
 	// Called by packwiz-installer-bootstrap to set up the help command
 	public static void addNonBootstrapOptions(Options options) {
-		//options.addOption("w", "welp", false, "Testing options");
+		options.addOption("s", "side", true, "Side to install mods from (client/server, defaults to client)"); // TODO: implement
+		options.addOption(null, "title", true, "Title of the installer window");
 	}
 	
 	// TODO: link these somehow so they're only defined once?
@@ -47,8 +73,8 @@ public class Main {
 		options.addOption(null, "bootstrap-update-token", true, "Github API Access Token, for private repositories");
 		options.addOption(null, "bootstrap-no-update", false, "Don't update packwiz-installer");
 		options.addOption(null, "bootstrap-main-jar", true, "Location of the packwiz-installer JAR file");
-		options.addOption("g", "no-gui", false, "Don't display a GUI to show update progress");
-		options.addOption("h", "help", false, "Display this message");
+		options.addOption("g", "no-gui", false, "Don't display a GUI to show update progress"); // TODO: implement
+		options.addOption("h", "help", false, "Display this message"); // Implemented in packwiz-installer-bootstrap!
 	}
 	
 }

src/main/java/link/infra/packwiz/installer/UpdateManager.java

@@ -1,7 +1,21 @@
 package link.infra.packwiz.installer;
 
+import java.net.URI;
+
 public class UpdateManager {
-	Thread updateThread = new Thread(new UpdateThread());
+	
+	public final Options opts;
+	public final IUserInterface ui;
+	
+	public static class Options {
+		public URI downloadURI;
+		public String manifestFile = "packwiz.json";
+	}
+	
+	public UpdateManager(Options opts, IUserInterface ui) {
+		this.opts = opts;
+		this.ui = ui;
+	}
 	
 	public void cleanup() {
 		

src/main/java/link/infra/packwiz/installer/UpdateThread.java

@@ -1,10 +0,0 @@
-package link.infra.packwiz.installer;
-
-public class UpdateThread implements Runnable {
-
-	@Override
-	public void run() {
-		
-	}
-
-}