[shunjieee] iP

src/main/java/Duke.java

@@ -1,3 +1,14 @@
+import helperpackage.Deadline;
+import helperpackage.DukeException;
+import helperpackage.Event;
+import helperpackage.Task;
+import helperpackage.ToDo;
+
+import java.util.LinkedList;
+import java.util.NoSuchElementException;
+import java.util.Scanner;
+import java.util.StringTokenizer;
+
 public class Duke {
     public static void main(String[] args) {
         String logo = " ____        _        \n"
@@ -6,5 +17,150 @@ public static void main(String[] args) {
                 + "| |_| | |_| |   <  __/\n"
                 + "|____/ \\__,_|_|\\_\\___|\n";
         System.out.println("Hello from\n" + logo);
+        System.out.println("________________________________________");
+
+        System.out.println("Hello! I'm NextGenerationJarvis.");
+        System.out.println("What can I do for you?");
+        System.out.println("________________________________________\n");
+
+        Scanner scanner = new Scanner(System.in);
+        String userInput = scanner.nextLine();
+
+        /** Used to store Tasks */
+        LinkedList<Task> taskList = new LinkedList<>();
+
+        // loop only exits if input is "bye"
+        while (!userInput.toLowerCase().equals("bye")) {
+            System.out.println("\n________________________________________");
+
+            // Level-2: if the input is "list"
+            if (userInput.toLowerCase().equals("list")) {
+                System.out.println("Here are the tasks in your list:");
+
+                for (int i = 1; i <= taskList.size(); i++) {
+                    Task t = taskList.get(i - 1);
+                    System.out.println(i + ". " + t.toString());
+                }
+
+            } else {
+                StringTokenizer st = new StringTokenizer(userInput);
+                String cmd = st.nextToken().toLowerCase();
+
+                // Level-3: mark & unmark
+                if (cmd.equals("mark") || (cmd.equals("unmark"))) {
+                    try {
+                        changeStatus(taskList, cmd, st);
+                    } catch (IndexOutOfBoundsException e) {
+                        System.out.println("Task not found. :(");
+
+                    } catch (NumberFormatException e) {
+                        System.out.println("Input is not an integer. :(");
+
+                    } catch (NoSuchElementException e) {
+                        System.out.println("Missing task number. :(");
+                    }
+
+                // Level-4: ToDo, Deadline, Event
+                } else if (cmd.equals("todo") || cmd.equals("event") || cmd.equals("deadline")) {
+                    try {
+                        addTask(taskList, cmd, userInput);
+
+                    } catch (DukeException e) {
+                        System.out.println(e.getMessage());
+
+                    } catch (StringIndexOutOfBoundsException e) {
+                        System.out.println("Invalid input. :(");
+                    }
+
+                // Level-6: Delete
+                } else if (cmd.equals("delete")) {
+                    try {
+                        delete(taskList, cmd, st);
+                    } catch (IndexOutOfBoundsException e) {
+                        System.out.println("Task not found. :(");
+
+                    } catch (NumberFormatException e) {
+                        System.out.println("Input is not an integer. :(");
+
+                    } catch (NoSuchElementException e) {
+                        System.out.println("Missing task number. :(");
+                    }
+
+                // Level-5: Throw exception for other inputs
+                } else {
+                    try {
+                        throw new DukeException("OOPS!! Pls try again. :)");
+                    } catch (DukeException e) {
+                        System.out.println(e.getMessage());
+                    }
+                }
+            }
+            System.out.println("________________________________________\n");
+            userInput = scanner.nextLine();
+        }    
+
+        System.out.println("\n________________________________________");
+        System.out.println("Bye. Hope to see you again soon!");
+        System.out.println("________________________________________\n");
+
+        scanner.close();
     }
+
+    // Level-3: mark & unmark
+    public static void changeStatus(LinkedList<Task> taskList, String cmd, StringTokenizer st) throws IndexOutOfBoundsException,
+            NumberFormatException, NoSuchElementException {
+
+        int index = Integer.parseInt(st.nextToken());
+        Task t = taskList.get(index - 1);
+
+        if (cmd.equals("mark")) {
+            t.markAsDone();
+            System.out.println("Nice! I've marked this task as done:");
+
+        } else if (cmd.equals("unmark")) {
+            t.unmark();
+            System.out.println("OK, I've marked this task as not done yet:");
+        }
+
+        System.out.println(" " + t.toString());
+    }
+
+    // Level-4: ToDo, Deadline, Event
+    public static void addTask(LinkedList<Task> taskList, String cmd, String userInput) throws DukeException {
+        int firstSpaceIndex = userInput.indexOf(" ");
+        String description = userInput.substring(firstSpaceIndex + 1);
+        Task t = new Task(" ");
+
+        if (cmd.equals("todo")) {
+            description = description.strip();
+            if (description.equals("") || firstSpaceIndex == -1) {
+                throw new DukeException("Invalid todo input. :(");
+            } else {
+                t = new ToDo(description);
+            }
+
+        } else if (cmd.equals("deadline")) {
+            t = new Deadline(description);
+
+        } else if (cmd.equals("event")) {
+            t = new Event(description);
+        }
+
+        taskList.add(t);
+        System.out.println("Got it. I've added this task:");
+        System.out.println("  " + t.toString());
+        System.out.println("Now you have " + taskList.size() + " tasks in the list.");
+    }
+
+    // Level-6: Delete
+    public static void delete (LinkedList<Task> taskList, String cmd, StringTokenizer st) throws IndexOutOfBoundsException,
+            NumberFormatException, NoSuchElementException {
+
+    int index = Integer.parseInt(st.nextToken());
+    Task t = taskList.remove(index - 1);
+
+    System.out.println("Noted, I've removed this task:");
+    System.out.println(" " + t.toString());
+    System.out.println("Now you have " + taskList.size() + " tasks in the list.");
+}
 }

src/main/java/helperpackage/Deadline.java

@@ -0,0 +1,21 @@
+package helperpackage;
+
+public class Deadline extends Task {
+    protected String deadline;
+
+    public Deadline(String description) throws DukeException {
+        super(description.substring(0, description.indexOf("/")));
+        String deadline = description.substring(description.indexOf("/")).replace("/by", "by:");
+
+        if (!deadline.contains("by:")) {
+            throw new DukeException("Invalid deadline input. :(");
+        }
+
+        this.deadline = deadline;
+    }
+
+    @Override
+    public String toString() {
+        return "[D]" + super.toString() + "(" +  deadline + ")";
+    }
+}

src/main/java/helperpackage/DukeException.java

@@ -0,0 +1,9 @@
+package helperpackage;
+
+public class DukeException extends Exception {
+
+    // constructor
+    public DukeException(String message) {
+        super(message);
+    }
+}

src/main/java/helperpackage/Event.java

@@ -0,0 +1,22 @@
+package helperpackage;
+
+public class Event extends Task {
+    protected String startAndEndTime;
+
+    public Event(String description) throws DukeException {
+        super(description.substring(0, description.indexOf("/")));
+        String time = description.substring(description.indexOf("/")).replace("/from", 
+                "from:").replace("/to", "to:");
+
+        if (!(time.contains("from:") || time.contains("to:"))) {
+            throw new DukeException("Invalid event input. :(");
+        }
+
+        this.startAndEndTime = time;
+    }
+
+    @Override
+    public String toString() {
+        return "[E]" + super.toString() + "(" +  startAndEndTime + ")";
+    }
+}

src/main/java/helperpackage/Task.java

@@ -0,0 +1,50 @@
+package helperpackage;
+
+/**
+ * Creates an instance of Task.
+ */
+public class Task {
+    /** Task description, also the user input */
+    protected String description;
+    /** Status of the task, done or not done */
+    protected boolean isDone;
+
+    /**
+     * Returns an instance of Task, a constructor.
+     * 
+     * @param description User-defined task name.
+     */
+    public Task(String description) {
+        this.description = description;
+        this.isDone = false;
+    }
+
+    /**
+     * Returns the status of the task.
+     * 
+     * @return A string to indicate the status.
+     */
+    public String getStatusIcon() {
+        return (isDone ? "[X] " : "[ ] "); // mark done task with X
+    }
+
+    /**
+     * Sets the status of task as done.
+     */
+    public void markAsDone() {
+        this.isDone = true;
+    }
+
+    /**
+     * Sets the status of task as not done.
+     */
+    public void unmark() {
+        this.isDone = false;
+    }
+
+    @Override
+    public String toString() {
+        return getStatusIcon() + description;
+    }
+}
+

src/main/java/helperpackage/ToDo.java

@@ -0,0 +1,13 @@
+package helperpackage;
+
+public class ToDo extends Task {
+
+    public ToDo(String description) {
+        super(description);
+    }
+
+    @Override
+    public String toString() {
+        return "[T]" + super.toString();
+    }
+}

text-ui-test/EXPECTED.TXT

@@ -5,3 +5,66 @@ Hello from
 | |_| | |_| |   <  __/
 |____/ \__,_|_|\_\___|
 
+________________________________________
+Hello! I'm NextGenerationJarvis.
+What can I do for you?
+________________________________________
+
+
+________________________________________
+Got it. I've added this task:
+  [T][ ] borrow book
+Now you have 1 tasks in the list.
+________________________________________
+
+
+________________________________________
+Here are the tasks in your list:
+1. [T][ ] borrow book
+________________________________________
+
+
+________________________________________
+Got it. I've added this task:
+  [D][ ] return book (by: Sunday)
+Now you have 2 tasks in the list.
+________________________________________
+
+
+________________________________________
+Got it. I've added this task:
+  [E][ ] project meeting (from: Mon 2pm to: 4pm)
+Now you have 3 tasks in the list.
+________________________________________
+
+
+________________________________________
+Here are the tasks in your list:
+1. [T][ ] borrow book
+2. [D][ ] return book (by: Sunday)
+3. [E][ ] project meeting (from: Mon 2pm to: 4pm)
+________________________________________
+
+
+________________________________________
+Nice! I've marked this task as done:
+  [T][X] borrow book
+________________________________________
+
+
+________________________________________
+Nice! I've marked this task as done:
+  [D][X] return book (by: Sunday)
+________________________________________
+
+
+________________________________________
+OK, I've marked this task as not done yet:
+  [T][ ] borrow book
+________________________________________
+
+
+________________________________________
+Bye. Hope to see you again soon!
+________________________________________
+

text-ui-test/input.txt

@@ -0,0 +1,9 @@
+todo borrow book
+list
+deadline return book /by Sunday
+event project meeting /from Mon 2pm /to 4pm
+list
+mark 1
+mark 2
+unmark 1
+bye