Fix Delete Event Bug

Author: Brian030601

data/events/event.txt

@@ -1,3 +1 @@
-submit v1.0 | 2023-10-29T23:59:59 | 2023-10-30T23:59:59 
-eat dinner | 2023-12-20T19:00 | 2023-12-20T20:00 
-Do HW | 2023-12-20T12:30:30 | 2023-12-20T12:30:30 
+Plan Trip | 2023-12-20T12:30:30 | 2023-12-20T12:30:30 

src/main/java/seedu/duke/calendar/CalendarCommandParser.java

@@ -15,7 +15,7 @@ public EventCommand parseInput(String input) {
         assert input != null : "input is null";
 
         if (input.startsWith("add event")) {
-            return new AddEventCommand(input);
+            return new AddEventCommand();
         } else if (input.startsWith("delete event")) {
             return new DeleteEventCommand();
         } else if (input.startsWith("list events")) {

src/main/java/seedu/duke/calendar/EventList.java

@@ -33,8 +33,15 @@ public void findEvent(String keyword) {
         }
     }
 
-    public void deleteEvent(String name) {
-        eventList.removeIf(event -> event.getName().equals(name));
+    public int deleteEvent(String name) {
+        int size = eventList.size();
+        if (size > 0) {
+            eventList.removeIf(event -> event.getName().equals(name));
+        } else {
+            System.out.println("The Calendar is empty");
+        }
+
+        return size;
     }
 
     public void deleteAllEvents() {

src/main/java/seedu/duke/calendar/command/AddEventCommand.java

@@ -8,17 +8,8 @@
 import java.util.Scanner;
 import java.time.LocalDateTime;
 
-public class AddEventCommand extends DualEventCommand {
-
-    public AddEventCommand(String input) {
-        this.input = input;
-        beginnerCommandLength = 2;
-        expertCommandLength = 5;
-        syntaxString = "add event EVENT_NAME EVENT_START_DATE (in format yyyy-mm-ddThh:mm:ss) EVENT_END_DATE (in format yyyy-mm-ddThh:mm:ss)";
-    }
-
-    @Override
-    protected void executeBeginnerMode(Scanner scanner, EventList eventList) {
+public class AddEventCommand extends EventCommand {
+    public void execute(Scanner scanner, EventList eventList) {
         System.out.print("What's the event?: ");
         String eventName = scanner.nextLine();
         System.out.print("When does it start? (yyyy-mm-ddThh:mm:ss) (eg. 2023-12-20T12:30:30): ");
@@ -32,20 +23,4 @@ protected void executeBeginnerMode(Scanner scanner, EventList eventList) {
 
         System.out.println(event + " has been added to your Calendar");
     }
-
-    //@@author Cheezeblokz
-    @Override
-    protected void executeExpertMode(Scanner scanner, EventList eventList) {
-
-        String[] commandParts = input.split(" ");
-        String eventName = commandParts[2];
-        LocalDateTime startTime = LocalDateTime.parse(commandParts[3]);
-        LocalDateTime endTime = LocalDateTime.parse(commandParts[4]);
-
-        Event event = new Event(eventName, startTime, endTime);
-
-        eventList.addEvent(event);
-
-        System.out.println(event + " has been added to your Calendar");
-    }
 }

src/main/java/seedu/duke/calendar/command/DeleteEventCommand.java

@@ -3,15 +3,22 @@
 package seedu.duke.calendar.command;
 
 import seedu.duke.calendar.EventList;
+import seedu.duke.calendar.Event;
 
 import java.util.Scanner;
 
 public class DeleteEventCommand extends EventCommand{
     public void execute(Scanner scanner, EventList eventList) {
+        int size;
+
         System.out.print("Enter the event name: ");
         String eventName = scanner.nextLine();
 
-        eventList.deleteEvent(eventName);
-        System.out.println(eventName + " has been deleted from your Calendar!");
+        size = eventList.deleteEvent(eventName);
+        if (size > eventList.getSize()) {
+            System.out.println("    " + eventName + " has been deleted from your Calendar!");
+        } else if (size != 0 && size == eventList.getSize()) {
+            System.out.println("    " + eventName + " doesn't exist in your Calendar!");
+        }
     }
 }

src/main/java/seedu/duke/calendar/command/DualEventCommand.java

@@ -19,7 +19,7 @@ public void execute(Scanner scanner, EventList eventList) {
                 printLine();
             }
         } else {
-            System.out.println("    There is no event in your Calendar");
+            System.out.println("    The Calendar is empty");
         }
     }