feat: creates App to start the GUI and initialize all components

raffaelliscandiffio.shop-totem/src/main/java/com/github/raffaelliscandiffio/app/swing/App.java

@@ -0,0 +1,78 @@
+package com.github.raffaelliscandiffio.app.swing;
+
+import java.awt.EventQueue;
+import java.util.concurrent.Callable;
+
+import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import com.github.raffaelliscandiffio.app.dbinit.DBInitializer;
+import com.github.raffaelliscandiffio.app.dbinit.MongoInitializer;
+import com.github.raffaelliscandiffio.app.dbinit.MySqlInitializer;
+import com.github.raffaelliscandiffio.controller.TotemController;
+import com.github.raffaelliscandiffio.service.ShoppingService;
+import com.github.raffaelliscandiffio.transaction.TransactionManager;
+import com.github.raffaelliscandiffio.view.swing.TotemSwingView;
+
+import picocli.CommandLine;
+import picocli.CommandLine.Command;
+import picocli.CommandLine.Option;
+
+@Command(mixinStandardHelpOptions = true)
+public class App implements Callable<Void> {
+
+	private static final Logger LOGGER = LogManager.getLogger(App.class);
+
+	@Option(names = { "--database" }, description = "Either 'mongo' or 'mysql'")
+	private String databaseType = "mongo";
+
+	public static void main(String[] args) {
+		new CommandLine(new App()).execute(args);
+	}
+
+	TransactionManager transactionManager;
+	DBInitializer dbInitializer;
+
+	@Override
+	public Void call() throws Exception {
+
+		EventQueue.invokeLater(() -> {
+			try {
+
+				switch (databaseType) {
+				case "mysql":
+					dbInitializer = new MySqlInitializer();
+					break;
+				case "mongo":
+					dbInitializer = new MongoInitializer();
+					break;
+
+				default:
+					LOGGER.log(Level.ERROR, "--database must be either 'mysql' or 'mongo'");
+					System.exit(1);
+				}
+				dbInitializer.startDbConnection();
+				transactionManager = dbInitializer.getTransactionManager();
+
+				TotemSwingView totemView = new TotemSwingView();
+				ShoppingService shoppingService = new ShoppingService(transactionManager);
+				TotemController totemController = new TotemController(shoppingService, totemView);
+				totemView.setTotemController(totemController);
+				totemView.setVisible(true);
+
+			} catch (Exception e) {
+				LOGGER.log(Level.ERROR, "Exception", e);
+			}
+		});
+
+		Runtime.getRuntime().addShutdownHook(new Thread() {
+			@Override
+			public void run() {
+				dbInitializer.closeDbConnection();
+			}
+		});
+		return null;
+	}
+
+}