[Edward Alvin] ip

src/main/java/Deadline.java

@@ -0,0 +1,14 @@
+public class Deadline extends WordListItem{
+    static private final String SYMBOL = "[D]";
+    private String datetime;
+
+    public Deadline(String description, String datetime) {
+        super(description);
+        this.datetime = datetime;
+    }
+
+    @Override
+    public String toString() {
+        return SYMBOL + super.toString() + "(by: " + this.datetime + ")";
+    }
+}

src/main/java/Duke.java

@@ -1,10 +1,68 @@
+import java.util.Scanner;
+
 public class Duke {
+    static WordList wordList;
+
     public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        wordList = new WordList();
+
         String logo = " ____        _        \n"
                 + "|  _ \\ _   _| | _____ \n"
                 + "| | | | | | | |/ / _ \\\n"
                 + "| |_| | |_| |   <  __/\n"
                 + "|____/ \\__,_|_|\\_\\___|\n";
         System.out.println("Hello from\n" + logo);
+
+        replyWelcomeMessage();
+        String input;
+        while (true) {
+            input = sc.nextLine();
+            if (input.isEmpty()) {
+                warnEmpty();
+                continue;
+            }
+
+            Object[] parseResult = InputParser.parseInput(input);
+            InputType inputType = (InputType) parseResult[0];
+            String value = (String) parseResult[1];
+
+            processInput(inputType, value);
+            if (inputType == InputType.BYE) {
+                break;
+            }
+        }
+    }
+
+    public static void processInput(InputType inputType, String value) {
+        switch(inputType) {
+            case LIST:
+                wordList.printList();
+                break;
+            case MARK:
+                wordList.markItem(Integer.parseInt(value));
+                break;
+            case UNMARK:
+                wordList.unmarkItem(Integer.parseInt(value));
+                break;
+            case BYE:
+                replyBye();
+                break;
+            case NONE:
+                wordList.storeWord(value);
+                break;
+        }
+    }
+
+    public static void replyWelcomeMessage() {
+        System.out.println("Hello! I'm Duke");
+        System.out.println("What can I do for you?");
+    }
+
+    public static void warnEmpty() {
+        System.out.println("input is Empty!");
+    }
+    public static void replyBye() {
+        System.out.println("Bye. Hope to see you again soon!");
     }
 }

src/main/java/Event.java

@@ -0,0 +1,14 @@
+public class Event extends WordListItem{
+    static private final String SYMBOL = "[E]";
+    private String datetime;
+
+    public Event(String description, String datetime) {
+        super(description);
+        this.datetime = datetime;
+    }
+
+    @Override
+    public String toString() {
+        return SYMBOL + super.toString() + "(at: " + this.datetime + ")";
+    }
+}

src/main/java/InputParser.java

@@ -0,0 +1,14 @@
+public class InputParser {
+    static Object[] parseInput(String input) {
+        InputType type = InputType.NONE;
+        String value = input;
+        for(InputType inputType: InputType.values()) {
+            if (input.startsWith(inputType.label)) {
+                value = input.substring(inputType.label.length() + 1);
+                type = inputType;
+                return new Object[]{type, value};
+            }
+        }
+        return new Object[]{type, value};
+    }
+}

src/main/java/InputType.java

@@ -0,0 +1,14 @@
+public enum InputType {
+    BYE("bye"),
+    LIST("list"),
+    MARK("mark"),
+    UNMARK("unmark"),
+    NONE("none");
+
+    public final String label;
+
+    private InputType(String label) {
+        this.label = label;
+    }
+
+}

src/main/java/Todo.java

@@ -0,0 +1,12 @@
+public class Todo extends WordListItem{
+    static private final String SYMBOL = "[T]";
+
+    public Todo(String description) {
+        super(description);
+    }
+
+    @Override
+    public String toString() {
+        return SYMBOL + super.toString();
+    }
+}

src/main/java/WordList.java

@@ -0,0 +1,49 @@
+import java.util.ArrayList;
+
+public class WordList {
+    private ArrayList<WordListItem> wordList;
+
+    public WordList() {
+        this.wordList = new ArrayList<>();
+    }
+
+    public void storeWord(String word) {
+        this.wordList.add(new WordListItem(word));
+        System.out.println("  ------------------------------------");
+        System.out.println("  added: " + word);
+        System.out.println("  ------------------------------------");
+    }
+
+    public void markItem(int itemNumber) {
+        this.wordList.get(itemNumber - 1).markItem();
+        System.out.println("Nice! I've marked this task as done: ");
+        System.out.println("  " + this.wordList.get(itemNumber - 1));
+    }
+
+    public void unmarkItem(int itemNumber) {
+        this.wordList.get(itemNumber - 1).unmarkItem();
+        System.out.println("Nice! I've marked this task as not done: ");
+        System.out.println("  " + this.wordList.get(itemNumber - 1));
+    }
+
+    public void printList() {
+        System.out.println(this);
+    }
+
+    public int length() {
+        return this.wordList.size();
+    }
+
+    @Override
+    public String toString() {
+        int i = 1;
+        String str = "";
+        str += "------------------------------------\n";
+        for(WordListItem wordListItem: this.wordList) {
+            str += i + ". " + wordListItem + "\n";
+            i++;
+        }
+        str += "------------------------------------\n";
+        return str;
+    }
+}

src/main/java/WordListItem.java

@@ -0,0 +1,23 @@
+public class WordListItem {
+    private String description;
+    private boolean isDone;
+
+    public WordListItem(String description) {
+        this.description = description;
+        this.isDone = false;
+    }
+
+    public void markItem() {
+        this.isDone = true;
+    }
+
+    public void unmarkItem() {
+        this.isDone = false;
+    }
+
+    @Override
+    public String toString() {
+        String doneSymbol = isDone ? "[X]" : "[ ]";
+        return doneSymbol + " " + this.description;
+    }
+}