[Timothy Tay] iP

src/main/java/AddDeadlineCommand.java

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+import java.time.LocalDate;
+
+public class AddDeadlineCommand extends Command {
+    /**
+     * The AddDeadlineCommand class represents the command to add a deadline task.
+     */
+    private static final String horizontalLine = "-------------------------------------------" +
+            "-------------------------------------\n";
+    private final String taskDescription;
+    private final LocalDate deadline;
+
+    /**
+     * Initialises a newly created AddDeadlineCommand object.
+     * @param command the type of command
+     * @param taskDescription the description of the task
+     * @param deadline the deadline of the task
+     */
+    public AddDeadlineCommand(CommandType command, String taskDescription, LocalDate deadline) {
+        super(command);
+        this.taskDescription = taskDescription;
+        this.deadline = deadline;
+    }
+
+    /**
+     * Adds a deadline task to the list of tasks.
+     * @param ui the user interface of the chatbot
+     * @param storage the storage of tasks
+     */
+    @Override
+    public void execute(Ui ui, Storage storage) {
+        DeadlineTask newTask = new DeadlineTask(this.taskDescription, this.deadline);
+        String added = storage.addToList(newTask);
+        ui.print(horizontalLine + added + "\n" + horizontalLine);
+    }
+}

src/main/java/AddEventCommand.java

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+import java.time.LocalDate;
+
+public class AddEventCommand extends Command {
+    /**
+     * The AddEventCommand class represents the command to add an event task.
+     */
+    private static final String horizontalLine = "--------------------------------------------------------------------------------\n";
+    private final String taskDescription;
+    private final LocalDate from;
+    private final LocalDate to;
+
+    /**
+     * Initialises a newly created AddEventCommand object.
+     * @param command the type of command
+     * @param taskDescription the description of the task
+     * @param from the start date of the event
+     * @param to the end date of the event
+     */
+    public AddEventCommand(CommandType command, String taskDescription, LocalDate from, LocalDate to) {
+        super(command);
+        this.taskDescription = taskDescription;
+        this.from = from;
+        this.to = to;
+    }
+
+    /**
+     * Adds an event task to the list of tasks.
+     * Prints out the confirmation message or the error message.
+     * @param ui the user interface of the chatbot
+     * @param storage the storage of tasks accumulated as the chatbot runs
+     */
+    @Override
+    public void execute(Ui ui, Storage storage) {
+        EventTask newTask = new EventTask(this.taskDescription, this.from, this.to);
+        String added = storage.addToList(newTask);
+        ui.print(horizontalLine + added + "\n" + horizontalLine);
+    }
+}

src/main/java/AddToDoCommand.java

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+public class AddToDoCommand extends Command {
+    /**
+     * The AddToDoCommand class represents the command to add a to-do task.
+     */
+    private static final String horizontalLine = "--------------------------------------------------------------------------------\n";
+    private final String taskDescription;
+
+    /**
+     * Initialises a newly created AddToDoCommand object.
+     * @param command the type of command
+     * @param taskDescription the description of the task
+     */
+    public AddToDoCommand(CommandType command, String taskDescription) {
+        super(command);
+        this.taskDescription = taskDescription;
+    }
+
+    /**
+     * Adds a to-do task to the list of tasks.
+     * Prints out the confirmation message or the error message.
+     * @param ui the user interface of the chatbot
+     * @param storage the storage of tasks accumulated as the chatbot runs
+     */
+    @Override
+    public void execute(Ui ui, Storage storage) {
+        ToDoTask newTask = new ToDoTask(this.taskDescription);
+        String added = storage.addToList(newTask);
+        ui.print(horizontalLine + added + "\n" + horizontalLine);
+    }
+}

src/main/java/Command.java

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+public abstract class Command {
+    /**
+     * The Command class represents commands that can be run by the chatbot.
+     * To implement this class, extend this class and override the execute method.
+     */
+    private final CommandType command;
+
+    public Command(CommandType command) {
+        this.command = command;
+    }
+
+    /**
+     * Executes the command specific to the object.
+     * @param ui the user interface of the chatbot
+     * @param storage the storage of tasks accumulated as the chatbot runs
+     */
+    public abstract void execute(Ui ui, Storage storage) throws InvalidTaskNumberException, NoDescriptionException;
+}

src/main/java/CommandType.java

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+public enum CommandType {
+    LIST, MARK, UNMARK, TODO, DEADLINE, EVENT, DELETE, UNKNOWN
+}

src/main/java/DeadlineTask.java

@@ -0,0 +1,31 @@
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+
+public class DeadlineTask extends Task {
+    protected static final String type = "D | ";
+    protected LocalDate deadline;
+
+    public DeadlineTask(String description, LocalDate deadline) {
+        super(description);
+        this.deadline = deadline;
+    }
+
+    /**
+     * Returns a string that visually indicates the status of the to-do item.
+     * @return the string that represents the task type and status
+     */
+    @Override
+    public String getStatusIcon() {
+        return DeadlineTask.type + super.getStatusIcon();
+    }
+
+    /**
+     * Returns a string representation of the deadline.
+     * @return the string that represents the deadline description
+     */
+    @Override
+    public String toString() {
+        return this.getStatusIcon() + super.getTaskDescription() + " by: "
+                + this.deadline.format(DateTimeFormatter.ofPattern("MMM dd yyyy")) + "\n";
+    }
+}

src/main/java/DeleteTaskCommand.java

@@ -0,0 +1,29 @@
+public class DeleteTaskCommand extends Command {
+    /**
+     * The DeleteTaskCommand class represents the command to delete a task from the chatbot.
+     */
+    private static final String horizontalLine = "--------------------------------------------------------------------------------\n";
+    private final int index;
+
+    /**
+     * Initialises a newly created DeleteTaskCommand object.
+     * @param command the type of command
+     * @param index the description of the task.
+     */
+    public DeleteTaskCommand(CommandType command, int index) {
+        super(command);
+        this.index = index;
+    }
+
+    /**
+     * Deletes a specific task.
+     * Prints out the confirmation message or the error message.
+     * @param ui the user interface of the chatbot
+     * @param storage the storage of tasks accumulated as the chatbot runs
+     */
+    @Override
+    public void execute(Ui ui, Storage storage) throws InvalidTaskNumberException {
+        String deleted = storage.deleteTask(this.index);
+        ui.print(horizontalLine + deleted + "\n" + horizontalLine);
+    }
+}

src/main/java/EventTask.java

@@ -0,0 +1,34 @@
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+
+public class EventTask extends Task {
+    protected static final String type = "E | ";
+    protected LocalDate from;
+    protected LocalDate to;
+
+    public EventTask(String description, LocalDate from, LocalDate to) {
+        super(description);
+        this.from = from;
+        this.to = to;
+    }
+
+    /**
+     * Returns a string that visually indicates the status of the to-do item.
+     * @return the string that represents the task type and status
+     */
+    @Override
+    public String getStatusIcon() {
+        return EventTask.type + super.getStatusIcon();
+    }
+
+    /**
+     * Returns a string representation of the event.
+     * @return the string that represents the event description
+     */
+    @Override
+    public String toString() {
+        return this.getStatusIcon() + super.getTaskDescription()
+                + " from: " + this.from.format(DateTimeFormatter.ofPattern("MMM dd yyyy"))
+                + " to: " + this.to.format(DateTimeFormatter.ofPattern("MMM dd yyyy")) + "\n";
+    }
+}

src/main/java/InvalidTaskNumberException.java

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+public class InvalidTaskNumberException extends ProphetException {
+    protected String message;
+
+    public InvalidTaskNumberException() {
+        this.message = "Whoops! Invalid number. Please key in a valid integer\n";
+    }
+
+    /**
+     * Returns a string representation of the exception.
+     * @return the string that represents the Prophet's exception
+     */
+    public String toString() {
+        return this.message;
+    }
+}

src/main/java/ListCommand.java

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+public class ListCommand extends Command {
+    /**
+     * The ListCommand class represents a command to list all tasks in the chatbot.
+     */
+    private static final String horizontalLine = "--------------------------------------------------------------------------------\n";
+
+    /**
+     * Initialises a newly created ListCommand object.
+     * @param command the type of command
+     */
+    public ListCommand(CommandType command) {
+        super(command);
+    }
+
+    /**
+     * Prints out all current tasks.
+     * @param ui the user interface of the chatbot
+     * @param storage the storage of tasks
+     */
+    @Override
+    public void execute(Ui ui, Storage storage) {
+        String list = storage.enumerateList();
+        ui.print(horizontalLine + list + "\n" + horizontalLine);
+    }
+}

src/main/java/MarkCommand.java

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+public class MarkCommand extends Command {
+    /**
+     *  The MarkCommand class represents the command to mark a task as done.
+     */
+    private static final String horizontalLine = "--------------------------------------------------------------------------------\n";
+    private final int index;
+
+    /**
+     * Initialises a newly created MarkCommand object.
+     * @param command the type of command
+     * @param index the index of the task to be marked as done
+     */
+    public MarkCommand(CommandType command, int index) {
+        super(command);
+        this.index = index;
+    }
+
+    /**
+     * Marks a specific task as done.
+     * Prints out the confirmation message or the error message.
+     * @param ui the user interface of the chatbot
+     * @param storage the storage of tasks accumulated as the chatbot runs
+     */
+    @Override
+    public void execute(Ui ui, Storage storage) {
+        String marked = storage.markDone(index);
+        ui.print(horizontalLine + marked + "\n" + horizontalLine);
+    }
+}

src/main/java/MarkNotDoneCommand.java

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+public class MarkNotDoneCommand extends Command {
+    /**
+     * The MarkNotDoneCommand class represents the command to mark a task as not done.
+     */
+    private static final String horizontalLine = "--------------------------------" +
+            "------------------------------------------------\n";
+    private final int index;
+
+    /**
+     * Initialises a newly created MarkNotDoneCommand object.
+     * @param command the type of command
+     * @param index the description of the task
+     */
+    public MarkNotDoneCommand(CommandType command, int index) {
+        super(command);
+        this.index = index;
+    }
+
+    /**
+     * Marks a specific task as not done.
+     * Prints out the confirmation message or the error message.
+     * @param ui the user interface of the chatbot
+     * @param storage the storage of tasks accumulated as the chatbot runs
+     */
+    @Override
+    public void execute(Ui ui, Storage storage) {
+        String marked = storage.markNotDone(index);
+        ui.print(horizontalLine + marked + "\n" + horizontalLine);
+    }
+}

src/main/java/NoDescriptionException.java

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+public class NoDescriptionException extends ProphetException {
+    protected String message;
+
+    public NoDescriptionException() {
+        this.message = "Part of your description is missing. Usage is as such: \n" +
+                "todo description \nOR \ndeadline description /by when \nOR \nevent description /from when /to when\n";
+    }
+
+    /**
+     * Returns a string representation of the exception.
+     * @return the string that represents the no description exception
+     */
+    public String toString() {
+        return this.message;
+    }
+}