Merge branch 'branch-Level-6'

src/main/java/duke/ActionHandler.java

@@ -24,6 +24,10 @@ protected static void byeHandler() {
 
     // Print out everything in the list, index starts from 1
     protected static void listHandler(Vector<Task> tasks) {
+        if (tasks.size() == 0) {
+            Helper.printlnWithIndent("You don't have a task in your list!");
+            return;
+        }
         Helper.printlnWithIndent("Here are the tasks in your list:");
         for (int i = 0; i < tasks.size(); i += 1) {
             Helper.printlnWithIndent(String.format("%d.\t%s", i + 1, tasks.get(i)));
@@ -55,6 +59,28 @@ protected static void doneHandler(Vector<Task> tasks, String[] arguments) throws
         }
     }
 
+    // Delete a task from the list
+    protected static void deleteHandler(Vector<Task> tasks, String[] arguments) throws InvalidInputException {
+        if (arguments.length < 2) {
+            // An index must be provided for the task to be marked "done"
+            Helper.printlnWithIndent("You will need to give me an index, like this: `delete 2`.");
+        } else {
+            try {
+                int index = Integer.parseInt(arguments[1]);
+                if (index > tasks.size() || index < 1) {
+                    // This index is out of the boundary of our database
+                    throw new InvalidInputException(InputExceptionType.INDEX_OUT_OF_BOUND);
+                }
+
+                Task task = tasks.remove(index - 1);
+                Helper.printlnWithIndent("Sure! I've removed this task:");
+                Helper.printlnWithIndent("\t" + task);
+            } catch (NumberFormatException e) {
+                throw new InvalidInputException(InputExceptionType.NOT_INTEGER, e);
+            }
+        }
+    }
+
     // Create a deadline task
     protected static void deadlineHandler(Vector<Task> tasks, String[] arguments) throws InvalidInputException {
         int i = Helper.findIndex(arguments, "/by");

src/main/java/duke/Duke.java

@@ -44,6 +44,9 @@ public static void main(String[] args) {
                 case "done":
                     ActionHandler.doneHandler(tasks, arguments);
                     break;
+                case "delete":
+                    ActionHandler.deleteHandler(tasks, arguments);
+                    break;
                 case "deadline":
                     ActionHandler.deadlineHandler(tasks, arguments);
                     break;

text-ui-test/EXPECTED.TXT

@@ -99,5 +99,35 @@
 	3.	[D][✓] Deadline A (by: 1 Aug 2021)
 	------------------------------------------------------------
 	------------------------------------------------------------
+	Oops! We don't have an existing entry with this index.
+	------------------------------------------------------------
+	------------------------------------------------------------
+	Oops! Only integer is accepted as the argument.
+	------------------------------------------------------------
+	------------------------------------------------------------
+	Oops! We don't have an existing entry with this index.
+	------------------------------------------------------------
+	------------------------------------------------------------
+	Here are the tasks in your list:
+	1.	[T][✓] Task A
+	2.	[E][✓] Event A (at: 1 Apr 2021)
+	3.	[D][✓] Deadline A (by: 1 Aug 2021)
+	------------------------------------------------------------
+	------------------------------------------------------------
+	Sure! I've removed this task:
+		[T][✓] Task A
+	------------------------------------------------------------
+	------------------------------------------------------------
+	Sure! I've removed this task:
+		[D][✓] Deadline A (by: 1 Aug 2021)
+	------------------------------------------------------------
+	------------------------------------------------------------
+	Sure! I've removed this task:
+		[E][✓] Event A (at: 1 Apr 2021)
+	------------------------------------------------------------
+	------------------------------------------------------------
+	You don't have a task in your list!
+	------------------------------------------------------------
+	------------------------------------------------------------
 	Bye. Hope to see you again soon!
 	------------------------------------------------------------

text-ui-test/input.txt

@@ -21,4 +21,12 @@ done -1
 done Not_A_Number
 done 1000
 list
+delete -1
+delete Not_A_Number
+delete 1000
+list
+delete 1
+delete 2
+delete 1
+list
 bye

text-ui-test/runtest.sh

@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+cwd=$(pwd)
+cd $(dirname "$0")
 
 # create bin directory if it doesn't exist
 if [ ! -d "../bin" ]
@@ -35,4 +37,6 @@ then
 else
     echo "Test result: FAILED"
     exit 1
-fi
+fi
+
+cd $cwd