[Ajay Shanker] iP

README.md

@@ -1,6 +1,6 @@
-# Duke project template
+# J.A.R.V.I.S project template
 
-This is a project template for a greenfield Java project. It's named after the Java mascot _Duke_. Given below are instructions on how to use it.
+This is a project template for a greenfield Java project. It's named after the Java mascot _Jarvis_. Given below are instructions on how to use it.
 
 ## Setting up in Intellij
 
@@ -13,12 +13,13 @@ Prerequisites: JDK 17, update Intellij to the most recent version.
    1. If there are any further prompts, accept the defaults.
 1. Configure the project to use **JDK 17** (not other versions) as explained in [here](https://www.jetbrains.com/help/idea/sdk.html#set-up-jdk).<br>
    In the same dialog, set the **Project language level** field to the `SDK default` option.
-3. After that, locate the `src/main/java/Duke.java` file, right-click it, and choose `Run Duke.main()` (if the code editor is showing compile errors, try restarting the IDE). If the setup is correct, you should see something like the below as the output:
+1. After that, locate the `src/main/java/Jarvis.java` file, right-click it, and choose `Run Jarvis.main()` (if the code editor is showing compile errors, try restarting the IDE). If the setup is correct, you should see something like the below as the output:
    ```
    Hello from
-    ____        _        
-   |  _ \ _   _| | _____ 
-   | | | | | | | |/ / _ \
-   | |_| | |_| |   <  __/
-   |____/ \__,_|_|\_\___|
+                     ██╗    █████╗    ██████╗   ██╗   ██╗  ██╗   ███████╗
+                     ██║   ██╔══██╗   ██╔══██╗  ██║   ██║  ██║   ██╔════╝
+                     ██║   ███████║   ██████╔╝  ██║   ██║  ██║   ███████╗
+                ██   ██║   ██╔══██║   ██╔══██╗  ╚██╗ ██╔╝  ██║   ╚════██║
+                ╚█████╔╝██╗██║  ██║██╗██║  ██║██╗╚████╔╝██╗██║██╗███████║██╗
+                 ╚════╝ ╚═╝╚═╝  ╚═╝╚═╝╚═╝  ╚═╝╚═╝ ╚═══╝ ╚═╝╚═╝╚═╝╚══════╝╚═╝
    ```

src/main/java/META-INF/MANIFEST.MF

@@ -0,0 +1,3 @@
+Manifest-Version: 1.0
+Main-Class: org.ajay.Jarvis
+

src/main/java/org/ajay/Jarvis.java

@@ -0,0 +1,229 @@
+package org.ajay;
+
+import java.util.ArrayList;
+import java.util.NoSuchElementException;
+import java.util.Scanner;
+import org.ajay.exceptions.*;
+import org.ajay.exceptions.Error;
+import org.ajay.exceptions.IllegalArgumentException;
+import org.ajay.task.*;
+import org.ajay.utils.Storage;
+
+public class Jarvis {
+    // Constants
+    static final int MAX_TASK_LENGTH = 100; // Maximum length of a string
+
+    private static final String chatBotName = "Jarvis"; // Name of the chatbot
+
+    private static ArrayList<Task> taskList = new ArrayList<>(); // ArrayList to store tasks
+
+    static String command; // Variable to store the command
+    static String task; // Variable to store the task
+
+    /**
+     * Prints a break line to the console.
+     */
+    private static void printBreakLine() {
+        System.out.println("────────────────────────────────────────────────────────────");
+    }
+
+    /**
+     * Gracefully exits the program.
+     *
+     * @param status
+     */
+    private static void exit(int status) {
+        System.exit(status);
+    }
+
+    /**
+     * Prints the prompt to the console for visual marker for user to type.
+     */
+    private static void printPrompt() {
+        System.out.print("  ");
+    }
+
+    /**
+     * Prints the greeting messages to the console.
+     */
+    private static void printGreetingMsgs() {
+        String[] greetings = {"Hello! I'm " + chatBotName + "\nWhat can I do for you?"}; // List of greetings
+
+        // Print the greetings
+        for (String greeting : greetings) {
+            printBreakLine(); // Print a break line before each greeting
+            System.out.println(greeting); // Print the greeting
+        }
+        printBreakLine();
+    }
+
+    /**
+     * Prints the goodbye messages to the console.
+     */
+    private static void printGoodbyeMsgs() {
+        String[] goodbyes = {"Bye. Hope to see you again soon!"}; // List of goodbye messages
+
+        // Print the goodbye messages
+        for (String goodbye : goodbyes) {
+            printBreakLine();
+            System.out.println(goodbye); // Print the goodbye message
+        }
+        printBreakLine();
+        exit(0);
+    }
+
+    /**
+     * Prints the tasks to the console.
+     */
+    public static void printTasks() {
+        printBreakLine();
+        Task.printAllTasks(taskList);
+        printBreakLine();
+    }
+
+    /**
+     * Splits the command and task from the input.
+     *
+     * @param lineBufferString
+     */
+    public static void splitCommandAndTask(String lineBufferString) throws EmptyArgumentException {
+
+        if (lineBufferString.isEmpty()) {
+            throw new EmptyArgumentException(Error.EMPTY_ARG.toString());
+        }
+
+        if (lineBufferString.contains(" ")) {
+            command = lineBufferString.split(" ")[0];
+            task = lineBufferString.substring(command.length() + 1);
+        } else {
+            command = lineBufferString;
+            task = null;
+        }
+    }
+
+    /**
+     * Reads the input from the user and processes it.
+     *
+     * @param in
+     * @param lineBufferString
+     */
+    public static void readInput(Scanner in, String lineBufferString) {
+        try {
+            printPrompt(); // Print the prompt to the console
+            lineBufferString = in.nextLine();
+            splitCommandAndTask(lineBufferString);
+
+            switch (command) {
+            case "bye":
+                printGoodbyeMsgs();
+                break;
+            case "exit": // Habit of typing exit to exit the program
+                printGoodbyeMsgs();
+                break;
+            case Task.LIST_COMMAND_STRING: // List all the tasks
+                printTasks();
+                break;
+            case Todo.COMMAND_STRING: // Add a todo task
+                // taskList[Task.getNumberOfTasks()] = new Todo(task);
+                taskList.add(new Todo(task));
+                printBreakLine();
+
+                Storage.saveTaskList(taskList);
+                break;
+            case Deadline.COMMAND_STRING: // Add a deadline task
+                // taskList[Task.getNumberOfTasks()] = new Deadline(task);
+                taskList.add(new Deadline(task));
+                printBreakLine();
+
+                Storage.saveTaskList(taskList);
+                break;
+            case Event.COMMAND_STRING: // Add an event task
+                // taskList[Task.getNumberOfTasks()] = new Event(task);
+                taskList.add(new Event(task));
+                printBreakLine();
+
+                Storage.saveTaskList(taskList);
+                break;
+            case Task.MARK_COMMAND_STRING: // Mark the task as done
+                int taskNumberMark = Integer.parseInt(task); // Get the task number
+                Task.markAsDone(taskList, taskNumberMark); // Mark the task as done
+
+                Storage.saveTaskList(taskList);
+                break;
+            case Task.UNMARK_COMMAND_STRING: // Mark the task as undone
+                int taskNumberUnmark = Integer.parseInt(task); // Get the task number
+                Task.markAsUndone(taskList, taskNumberUnmark); // Mark the task as undone
+
+                Storage.saveTaskList(taskList);
+                break;
+            case Task.DELETE_COMMAND_STRING: // Delete the task
+                int taskNumberDelete = Integer.parseInt(task); // Get the task number
+                Task.deleteTask(taskList, taskNumberDelete); // Delete the task
+
+                Storage.saveTaskList(taskList);
+                break;
+            default:
+                throw new IllegalCommandException(Error.ILLEGAL_COMMAND.toString());
+            }
+
+            readInput(in, lineBufferString); // Recursively call the function to read the next input
+        } catch (EmptyArgumentException | IllegalCommandException | InvalidCommandFormatException |
+                 IllegalArgumentException e) {
+            printBreakLine();
+            System.out.println(e);
+            printBreakLine();
+            readInput(in, lineBufferString);
+        } catch (NoSuchElementException e) {
+            // FIXME: Facing unexpected NoSuchElementException error
+        }
+
+    }
+
+    public static void main(String[] args) {
+        String logo = """
+                                  @@@@@@@@@@@@@@@@@@@@@@@
+                              @@%     @@          @@      @@@
+                           @@         @@          @@          @@
+                        @@            @@          @@             @@
+                      @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
+                     @                                              *@
+                    @@@                                             @@@
+                   @  @@@                                         @@@  @
+                  @&    @@         @@@@@@@@@@@@@@@@@@@@@         @@.   @@
+                  @      @@@        @@              @@         @@@      @
+                  @       *@@         @@           @(         @@(       @
+                  @       ,@@@@        @@        @@         @@@@        @
+                  @   @@@@@  %@@         @@     @          @@& @@@@@    @
+                  @@@@         @@@        /@  @@         @@@       *@@@@/
+                   @@           @@@         @@          @@@           @@
+                    @@            @@&                 (@@            @@
+                      @       @@@@@@@@               @@@@@@@        @
+                       @@ @@@@*      @@,            @@      @@@@  @&
+                          @@          @@@         @@@          @@
+                            @@@         @@       @@         @@#
+                                @@@@     @@@   @@@     @@@@
+                                       @@@@@@@@@@@@@
+
+                     ██╗    █████╗    ██████╗   ██╗   ██╗  ██╗   ███████╗
+                     ██║   ██╔══██╗   ██╔══██╗  ██║   ██║  ██║   ██╔════╝
+                     ██║   ███████║   ██████╔╝  ██║   ██║  ██║   ███████╗
+                ██   ██║   ██╔══██║   ██╔══██╗  ╚██╗ ██╔╝  ██║   ╚════██║
+                ╚█████╔╝██╗██║  ██║██╗██║  ██║██╗╚████╔╝██╗██║██╗███████║██╗
+                 ╚════╝ ╚═╝╚═╝  ╚═╝╚═╝╚═╝  ╚═╝╚═╝ ╚═══╝ ╚═╝╚═╝╚═╝╚══════╝╚═╝
+                """;
+
+        String lineBufferString = ""; // Buffer to store the input from the user
+        Scanner in = new Scanner(System.in); // Scanner object to read input from the user
+
+        System.out.println("Hello from\n" + logo);
+        printGreetingMsgs();
+
+        try {
+            Storage.loadTaskList(taskList);
+        } catch (EmptyArgumentException | IllegalArgumentException e) {
+            e.printStackTrace();
+        }
+
+        readInput(in, lineBufferString); // Read the input from the user
+    }
+}

src/main/java/org/ajay/exceptions/EmptyArgumentException.java

@@ -0,0 +1,7 @@
+package org.ajay.exceptions;
+
+public class EmptyArgumentException extends JarvisException {
+    public EmptyArgumentException(String msg) {
+        super(msg);
+    }
+}

src/main/java/org/ajay/exceptions/Error.java

@@ -0,0 +1,34 @@
+package org.ajay.exceptions;
+
+
+// NOTE: Taken from https://stackoverflow.com/questions/446663/best-way-to-define-error-codes-strings-in-java
+public enum Error {
+
+    EMPTY_ARG(0, "Empty argument found."), ILLEGAL_COMMAND(1, "Invalid command found."), INVAILD_COMMAND_FORMAT(2, "Invalid command format found."), OUT_OF_BOUNDS(3, "Index out of bounds.");
+
+    private final int code;
+    private final String description;
+
+    private Error(int code, String description) {
+        this.code = code;
+        this.description = description;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public int getCode() {
+        return code;
+    }
+
+    @Override
+    public String toString() {
+        return description + " (Error Code: " + code + ")";
+    }
+}
+
+// public enum ErrorLevel {
+//     SUCCESS, WARN, ERROR, INFO,
+
+// }

src/main/java/org/ajay/exceptions/IllegalArgumentException.java

@@ -0,0 +1,7 @@
+package org.ajay.exceptions;
+
+public class IllegalArgumentException extends JarvisException {
+    public IllegalArgumentException(String msg) {
+        super(msg);
+    }
+}

src/main/java/org/ajay/exceptions/IllegalCommandException.java

@@ -0,0 +1,8 @@
+package org.ajay.exceptions;
+
+
+public class IllegalCommandException extends JarvisException {
+    public IllegalCommandException(String msg) {
+        super(msg);
+    }
+}

src/main/java/org/ajay/exceptions/InvalidCommandFormatException.java

@@ -0,0 +1,8 @@
+package org.ajay.exceptions;
+
+
+public class InvalidCommandFormatException extends JarvisException {
+    public InvalidCommandFormatException(String msg) {
+        super(msg);
+    }
+}

src/main/java/org/ajay/exceptions/JarvisException.java

@@ -0,0 +1,7 @@
+package org.ajay.exceptions;
+
+public class JarvisException extends Exception {
+    public JarvisException(String msg) {
+        super(msg);
+    }
+}