Level 4. ToDos, Events, Deadlines

src/main/java/Deadline.java

@@ -0,0 +1,8 @@
+class Deadline extends Todo{
+    private String[] split;
+
+    Deadline(String input) {
+        super(input);
+        split = input.split("/by");
+    }
+}

src/main/java/Duke.java

@@ -1,5 +1,4 @@
-import java.lang.reflect.Array;
-import java.util.*;
+import java.util.Scanner;
 
 /**
  * A Personal Assistant Chatbot that helps a person to keep track of various things.

src/main/java/Event.java

@@ -0,0 +1,8 @@
+class Event extends Todo{
+    private String[] split;
+
+    Event(String input) {
+        super(input);
+        split = input.split("/at");
+    }
+}

src/main/java/Parser.java

@@ -1,4 +1,4 @@
-public class Parser {
+class Parser {
     /**
      * @param line The entire user input.
      */
@@ -25,16 +25,28 @@ boolean parseInput(String line, UI ui, TaskList tasks) {
                 tasks.changeDone(line, ui, tasks);
                 return true;
             }
+            case "todo" -> {
+                tasks.createTodo(line, ui, tasks);
+                return true;
+            }
+            case "deadline" -> {
+                tasks.createDeadline(line, ui, tasks);
+                return true;
+            }
+            case "event" -> {
+                tasks.createEvent(line, ui, tasks);
+                return true;
+            }
             // also exit when user input is empty
             case "bye", "" -> {
                 ui.farewell();
                 return false;
             }
             default -> {
-                tasks.add(new Task(line));
-                System.out.println(line);
+                ui.invalidCommand();
                 return true;
             }
         }
     }
+
 }

src/main/java/TaskList.java

@@ -1,7 +1,7 @@
 import java.util.ArrayList;
 
 /**
- * Responsible for keeping the in-memory task list. This class will use an ArrayList inside it.
+ * Responsible for managing all the tasks in the list. This class will use an ArrayList inside it.
  */
 class TaskList {
     private ArrayList<Task> tasks;
@@ -46,12 +46,81 @@ private void markAsDone(String line, UI ui, TaskList tasks) {
                 int index = Integer.parseInt(line);
                 tasks.get(index - 1).setDone(true);
                 ui.markedAsDone(index, tasks);
-            } else System.out.println(ui.colorRed("There are no tasks to mark as done."));
+            } else ui.printError("There are no tasks to mark as done.");
         } catch (NumberFormatException e) {
-            System.out.println(ui.colorRed("Please type a number for the index."));
+            ui.printError("Please type a number for the index.");
         } catch (IndexOutOfBoundsException e) {
-            System.out.println(ui.colorRed("Please type an index number from 1 to "
-                    + tasks.size() + "."));
+            ui.printError("Please type an index number from 1 to "
+                    + tasks.size() + ".");
+        }
+    }
+
+    void createTodo(String line, UI ui, TaskList tasks) {
+        try {
+            if (line.substring("todo".length()).trim().isEmpty()) {
+                throw new DukeException
+                        (ui.colorRed("Please type in the 'todo <something>' format."));
+            } else if (line.contains("todo")) {
+                line = line.replaceFirst("todo", "[Todo]    ");
+                tasks.add(new Todo(line));
+                ui.taskAdded(line, tasks);
+            }
+        } catch (DukeException e) {
+            ui.printError(e.getMessage());
+        }
+    }
+
+    void createDeadline(String line, UI ui, TaskList tasks) {
+        try {
+            if (line.substring("deadline".length()).trim().isEmpty() || !line.contains("/by")) {
+                throw new DukeException
+                        (ui.colorRed("Please type in the 'deadline <something> /by <when>' format."));
+            } else if (line.contains("deadline")) {
+                String[] split = line.split("/by");
+                if (split[0].isEmpty() || split[1].isEmpty()) {
+                    throw new DukeException
+                            (ui.colorRed("Please type in the 'deadline " +
+                                    "<something> /by <when>' format."));
+                } else if (line.contains("deadline")) {
+                    line = line.replaceFirst("deadline", "[Deadline]")
+                            .replaceFirst("/by", "(by:")
+                            .concat(")");
+                    tasks.add(new Deadline(line));
+                    ui.taskAdded(line, tasks);
+                }
+            }
+        } catch (DukeException e) {
+            ui.printError(e.getMessage());
+        } catch (IndexOutOfBoundsException e) {
+            ui.printError("Please type in something for <when>" +
+                    " after 'deadline <something> /by'.");
+        }
+    }
+
+    void createEvent(String line, UI ui, TaskList tasks) {
+        try {
+            if (line.substring("event".length()).trim().isEmpty() || !line.contains("/at")) {
+                throw new DukeException
+                        (ui.colorRed("Please type in the 'event <something> /at <when>' format."));
+            } else if (line.contains("event")) {
+                String[] split = line.split("/at");
+                if (split[0].isEmpty() || split[1].isEmpty()) {
+                    throw new DukeException
+                            (ui.colorRed("Please type in the 'event " +
+                                    "<something> /at <when>' format."));
+                } else if (line.contains("event")) {
+                    line = line.replaceFirst("event", "[Event]   ")
+                            .replaceFirst("/at", "(at:")
+                            .concat(")");
+                    tasks.add(new Event(line));
+                    ui.taskAdded(line, tasks);
+                }
+            }
+        } catch (DukeException e) {
+            ui.printError(e.getMessage());
+        } catch (IndexOutOfBoundsException e) {
+            ui.printError("Please type in something for <when>" +
+                    " after 'deadline <something> /by'.");
         }
     }
 }

src/main/java/Todo.java

@@ -0,0 +1,11 @@
+class Todo extends Task{
+
+    Todo(String input) {
+        super(input);
+    }
+
+    Todo(String input, boolean isDone) {
+        super(input);
+        setDone(isDone);
+    }
+}

src/main/java/UI.java

@@ -1,4 +1,4 @@
-public class UI {
+class UI {
 
     void greet() {
         String greeting = "____________________________________________________________\n"
@@ -7,19 +7,45 @@ void greet() {
                 + "____________________________________________________________\n";
         System.out.println(greeting);
     }
+
     void farewell() {
         String farewell = "Bye. Hope to see you again soon!\n"
                 + "____________________________________________________________\n";
         System.out.println(farewell);
     }
+
     void markedAsDone(int index, TaskList tasks) {
-        System.out.println("\033[33mTask [" + index + "] "
-                + tasks.get(index - 1).getDescription() + " has been set as completed.\033[0m");
+        String done = "____________________________________________________________\n"
+                + "\033[33mTask [" + index + "] "
+                + tasks.get(index - 1).getDescription() + " has been set as completed.\033[0m"
+                + "\n____________________________________________________________\n";
+        System.out.println(done);
+    }
+
+    void showTotal(TaskList tasks) {
+
+        String total = "Tasks in the list: " + tasks.size()
+                + "\n____________________________________________________________\n";
+        System.out.println(total);
     }
+
     void printError(String s) {
-        System.out.println(s);
+        System.out.println(colorRed(s));
     }
+
     String colorRed(String input) {
         return "\033[31m" + input + "\033[0m";
     }
+
+    void invalidCommand() {
+        printError("Please enter a valid command.");
+    }
+
+    public void taskAdded(String line, TaskList tasks) {
+        String added = "____________________________________________________________\n"
+                + "Great! You have entered a proper task as shown below:\n"
+                + line;
+        System.out.println(added);
+        showTotal(tasks);
+    }
 }