Add application logic to main method of BinBash class

build.gradle

@@ -29,11 +29,11 @@ test {
 }
 
 application {
-    mainClass.set("seedu.binbash.Duke")
+    mainClass.set("seedu.binbash.BinBash")
 }
 
 shadowJar {
-    archiveBaseName.set("duke")
+    archiveBaseName.set("binbash")
     archiveClassifier.set("")
 }
 

src/main/java/seedu/binbash/BinBash.java

@@ -0,0 +1,33 @@
+package seedu.binbash;
+
+import seedu.binbash.ui.Ui;
+import seedu.binbash.command.Command;
+import seedu.binbash.command.ByeCommand;
+
+public class BinBash {
+    /**
+     * Main entry-point for the BinBash application.
+     */
+    public static void main(String[] args) {
+        Ui userInterface = new Ui();
+        ItemList itemList = new ItemList();
+        Parser inputParser = new Parser(itemList);
+
+        userInterface.greet();
+
+        while (userInterface.isUserActive()) {
+            String userInput = userInterface.readUserCommand();
+            Command userCommand = inputParser.parseCommand(userInput);
+
+            if (userCommand instanceof ByeCommand) {
+                userInterface.setUserAsInactive();
+                continue;
+            }
+
+            String executionResult = userCommand.execute();
+            userInterface.talk(executionResult);
+        }
+
+        userInterface.farewell();
+    }
+}

src/main/java/seedu/binbash/Parser.java

@@ -2,6 +2,7 @@
 
 import java.util.regex.Matcher;
 
+import seedu.binbash.command.ByeCommand;
 import seedu.binbash.command.Command;
 import seedu.binbash.command.DeleteCommand;
 import seedu.binbash.command.ListCommand;
@@ -24,7 +25,7 @@ public Command parseCommand(String userInput) {
         case "list":
             return parseListCommand(arguments);
         default:
-            return null;
+            return new ByeCommand(itemList);
         }
     }
 

src/main/java/seedu/binbash/command/ByeCommand.java

@@ -0,0 +1,16 @@
+package seedu.binbash.command;
+
+import seedu.binbash.ItemList;
+
+public class ByeCommand extends Command {
+    public static final String COMMAND_STRING = "bye";
+
+    public ByeCommand(ItemList itemList) {
+        super(itemList);
+    }
+
+    @Override
+    public String execute() {
+        return "";
+    }
+}

src/main/java/seedu/binbash/ui/Ui.java

@@ -3,11 +3,17 @@
 import java.util.Scanner;
 
 public class Ui {
+    private static final String NEWLINE = System.lineSeparator();
+    private static final String LOGO = "  ____  _       ____            _" + NEWLINE +
+            " | __ )(_)_ __ | __ )  __ _ ___| |__" + NEWLINE +
+            " |  _ \\| | '_ \\|  _ \\ / _` / __| '_ \\" + NEWLINE +
+            " | |_) | | | | | |_) | (_| \\__ \\ | | |" + NEWLINE +
+            " |____/|_|_| |_|____/ \\__,_|___/_| |_|" + NEWLINE + NEWLINE;
     private static final String WELCOME_MESSAGE = "Welcome to BinBash!";
     private static final String GOODBYE_MESSAGE = "Bye!";
     private static final String LINE_DIVIDER = "-------------------------------------------------------------";
 
-    private Scanner in;
+    private final Scanner in;
     private boolean isUserActive;
 
     public Ui() {
@@ -19,15 +25,23 @@ public boolean isUserActive() {
         return isUserActive;
     }
 
+    public void setUserAsInactive() {
+        isUserActive = false;
+    }
+
+    public String readUserCommand() {
+        return in.nextLine();
+    }
+
     public void greet() {
-        talk(WELCOME_MESSAGE);
+        talk(LOGO + WELCOME_MESSAGE);
     }
 
     public void farewell() {
         talk(GOODBYE_MESSAGE);
     }
 
     public void talk(String line) {
-        System.out.println(LINE_DIVIDER + "\n" + line + "\n" + LINE_DIVIDER);
+        System.out.println(LINE_DIVIDER + NEWLINE + line + NEWLINE + LINE_DIVIDER);
     }
 }

src/test/java/seedu/binbash/BinBashTest.java

@@ -0,0 +1,62 @@
+package seedu.binbash;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.InputStream;
+import java.io.PrintStream;
+
+class BinBashTest {
+    private static final String NEWLINE = System.lineSeparator();
+    private static final String TEST_INPUT = "bye";
+    private static final String EXPECTED_OUTPUT = "-------------------------------------------------------------" +
+            NEWLINE +
+            "  ____  _       ____            _" + NEWLINE +
+            " | __ )(_)_ __ | __ )  __ _ ___| |__" + NEWLINE +
+            " |  _ \\| | '_ \\|  _ \\ / _` / __| '_ \\" + NEWLINE +
+            " | |_) | | | | | |_) | (_| \\__ \\ | | |" + NEWLINE +
+            " |____/|_|_| |_|____/ \\__,_|___/_| |_|" + NEWLINE + NEWLINE +
+            "Welcome to BinBash!" + NEWLINE +
+            "-------------------------------------------------------------" + NEWLINE +
+            "-------------------------------------------------------------" + NEWLINE +
+            "Bye!" + NEWLINE +
+            "-------------------------------------------------------------" + NEWLINE;
+    private static final InputStream systemIn = System.in;
+    private static final PrintStream systemOut = System.out;
+    private ByteArrayInputStream testIn;
+    private ByteArrayOutputStream testOut;
+
+    @Test
+    public void main_readByeCommand_byeCommandExecuted() {
+        try {
+            setupInput();
+            setupOutput();
+            BinBash.main(new String[0]);
+            assertEquals(getOutput(), EXPECTED_OUTPUT);
+        } finally {
+            restoreSystemInputOutput();
+        }
+    }
+
+    private void setupInput() {
+        testIn = new ByteArrayInputStream(TEST_INPUT.getBytes());
+        System.setIn(testIn);
+    }
+
+    private void setupOutput() {
+        testOut = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(testOut));
+    }
+
+    private String getOutput() {
+        return testOut.toString();
+    }
+
+    private void restoreSystemInputOutput() {
+        System.setIn(systemIn);
+        System.setOut(systemOut);
+    }
+}

text-ui-test/EXPECTED.TXT

@@ -1,9 +1,15 @@
-Hello from
- ____        _        
-|  _ \ _   _| | _____ 
-| | | | | | | |/ / _ \
-| |_| | |_| |   <  __/
-|____/ \__,_|_|\_\___|
+-------------------------------------------------------------
+  ____  _       ____            _
+ | __ )(_)_ __ | __ )  __ _ ___| |__
+ |  _ \| | '_ \|  _ \ / _` / __| '_ \
+ | |_) | | | | | |_) | (_| \__ \ | | |
+ |____/|_|_| |_|____/ \__,_|___/_| |_|
 
-What is your name?
-Hello James Gosling
+Welcome to BinBash!
+-------------------------------------------------------------
+-------------------------------------------------------------
+
+-------------------------------------------------------------
+-------------------------------------------------------------
+Bye!
+-------------------------------------------------------------

text-ui-test/input.txt

@@ -1 +1,2 @@
-James Gosling
+list
+bye