Merge branch 'branch-Level-7'

# Conflicts: # src/main/java/duke/Duke.java
SibingWu · Feb 14, 2020 · 3ec3c7e · 3ec3c7e
2 parents 3278712 + 5ee424a
commit 3ec3c7e
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Showing 6 changed files with 122 additions and 7 deletions.
diff --git a/data/duke.txt b/data/duke.txt
diff --git a/src/main/java/duke/Duke.java b/src/main/java/duke/Duke.java
@@ -6,6 +6,10 @@
 import duke.tasks.Task;
 import duke.tasks.Todo;
 
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileWriter;
+import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Scanner;
@@ -23,9 +27,20 @@
 public class Duke {
     // a array to store user input task
     private static List<Task> tasks = new ArrayList<>();
+
+    private static String filePath = "data" + File.separator + "duke.txt";
 
     public static void main(String[] args) {
         displayWelcomeMessage();
+
+        // for debugging
+        // System.out.println(java.nio.file.Paths.get("").toAbsolutePath().toString());
+
+        try {
+            loadFileContents(filePath);
+        } catch (FileNotFoundException e) {
+            System.out.println("File not found");
+        }
 
         Scanner in = new Scanner(System.in);
         String input = null;
@@ -42,10 +57,13 @@ public static void main(String[] args) {
             case DONE_COMMAND:
                 try {
                     markAsDone(Integer.parseInt(split[1].trim()));
+                    updateTasksToFile(filePath, tasks);
                 } catch (ArrayIndexOutOfBoundsException e) {
                     displayEmptyDescriptionMessage(command);
                 } catch (NumberFormatException e) {
                     displayInvalidTaskNumberMessage();
+                } catch (IOException e) {
+                    displayIOExceptionMessage(e);
                 } catch (ChatboxException e) {
                     displayInvalidTaskNumberMessage();
                 }
@@ -64,26 +82,35 @@ public static void main(String[] args) {
             case TODO_COMMAND:
                 try {
                     addTodo(split[1]);
+                    updateTasksToFile(filePath, tasks);
                 } catch (ArrayIndexOutOfBoundsException e) {
                     displayEmptyDescriptionMessage(command);
+                } catch (IOException e) {
+                    displayIOExceptionMessage(e);
                 }
                 break;
             case DEADLINE_COMMAND:
                 try {
                     addDeadline(split[1]);
+                    updateTasksToFile(filePath, tasks);
                 } catch (ArrayIndexOutOfBoundsException e) {
                     displayEmptyDescriptionMessage(command);
                 } catch (ChatboxException e) {
                     displayTimeMissingMessage();
+                } catch (IOException e) {
+                    displayIOExceptionMessage(e);
                 }
                 break;
             case EVENT_COMMAND:
                 try {
                     addEvent(split[1]);
+                    updateTasksToFile(filePath, tasks);
                 } catch (ArrayIndexOutOfBoundsException e) {
                     displayEmptyDescriptionMessage(command);
                 } catch (ChatboxException e) {
                     displayTimeMissingMessage();
+                } catch (IOException e) {
+                    displayIOExceptionMessage(e);
                 }
                 break;
             case BYE_COMMAND:
@@ -95,7 +122,7 @@ public static void main(String[] args) {
             }
         } while (!input.equals(BYE_COMMAND));
     }
-    
+
     private static void displayWelcomeMessage() {
         String logo = " ____        _        \n"
                 + "|  _ \\ _   _| | _____ \n"
@@ -197,8 +224,67 @@ private static void displayCommandNotFoundMessage() {
     private static void displayEmptyDescriptionMessage(String command) {
         System.out.println(String.format("OOPS!!! The description of a %s cannot be empty.", command));
     }
-
+    
     private static void displayTimeMissingMessage() {
         System.out.println("Oops! Time is missing!");
     }
+
+    private static void displayIOExceptionMessage(IOException e) {
+        System.out.println("Something went wrong: " + e.getMessage());
+    }
+
+    private static void loadFileContents(String filePath) throws FileNotFoundException {
+        File f = new File(filePath); // create a File for the given file path
+        Scanner s = new Scanner(f); // create a Scanner using the File as the source
+        System.out.println("Tasks on the list: ");
+        if (!s.hasNext()) {
+            System.out.println("Empty list");
+        }
+
+        while (s.hasNext()) {
+            String taskLine = s.nextLine();
+            System.out.println(taskLine);
+            saveStringtoTask(taskLine);
+        }
+    }
+
+    private static void updateTasksToFile(String filePath, List<Task> tasks) throws IOException {
+        FileWriter fw = new FileWriter(filePath);
+        for (Task task: tasks) {
+            fw.write(task.getFileString() + System.lineSeparator());
+        }
+        fw.close();
+    }
+
+    private static void saveStringtoTask(String fileLine) {
+        String[] arrays = fileLine.split("\\|");
+        String type = arrays[0].trim();
+        String isDone = arrays[1].trim();
+        String description = arrays[2].trim();
+        switch (type) {
+        case "T":
+            Task todo = new Todo(description);
+            if (isDone == "1") {
+                todo.markAsDone();
+            }
+            tasks.add(todo);
+            break;
+        case "D":
+            String by = arrays[3].trim();
+            Task deadline = new Deadline(description, by);
+            if (isDone == "1") {
+                deadline.markAsDone();
+            }
+            tasks.add(deadline);
+            break;
+        case "E":
+            String at = arrays[3].trim();
+            Task event = new Event(description, at);
+            if (isDone == "1") {
+                event.markAsDone();
+            }
+            tasks.add(event);
+            break;
+        }
+    }
 }
diff --git a/src/main/java/duke/tasks/Deadline.java b/src/main/java/duke/tasks/Deadline.java
@@ -6,10 +6,16 @@ public class Deadline extends Task {
     public Deadline(String description, String by) {
         super(description);
         this.by = by;
+        this.type = "D";
     }
 
     @Override
     public String toString() {
-        return String.format("[D]%s (by: %s)", super.toString(), by);
+        return String.format("[%s]%s (by: %s)", this.type, super.toString(), by);
+    }
+
+    @Override
+    public String getFileString() {
+        return String.format("%s | %d | %s | %s", type, isDone ? 1 : 0, description, by);
     }
 }
diff --git a/src/main/java/duke/tasks/Event.java b/src/main/java/duke/tasks/Event.java
@@ -6,10 +6,16 @@ public class Event extends Task {
     public Event(String description, String at) {
         super(description);
         this.at = at;
+        this.type = "E";
     }
 
     @Override
     public String toString() {
-        return String.format("[E]%s (at: %s)", super.toString(), at);
+        return String.format("[%s]%s (at: %s)", this.type, super.toString(), at);
+    }
+
+    @Override
+    public String getFileString() {
+        return String.format("%s | %d | %s | %s", type, isDone ? 1 : 0, description, at);
     }
 }
diff --git a/src/main/java/duke/tasks/Task.java b/src/main/java/duke/tasks/Task.java
@@ -3,15 +3,16 @@
 import static duke.utils.Constants.YES_ICON;
 import static duke.utils.Constants.NO_ICON;
 
-public class Task {
+public abstract class Task {
     protected String description;
     protected boolean isDone;
+    protected String type; // to be assigned in subclasses
 
     public Task(String description) {
         this.description = description;
         this.isDone = false;
     }
-
+    
     public String getStatusIcon() {
         return (isDone ? YES_ICON : NO_ICON); // return tick or X symbols
     }
@@ -20,7 +21,17 @@ public String toString() {
         return String.format("[%s] %s", getStatusIcon(), description);
     }
 
+    public boolean isDone() {
+        return this.isDone;
+    }
+
     public void markAsDone() {
         isDone = true;
     }
+
+    public String getType() {
+        return type;
+    }
+
+    public abstract String getFileString();
 }
diff --git a/src/main/java/duke/tasks/Todo.java b/src/main/java/duke/tasks/Todo.java
@@ -4,10 +4,16 @@ public class Todo extends Task {
 
     public Todo(String description) {
         super(description);
+        this.type = "T";
     }
 
     @Override
     public String toString() {
-        return String.format("[T]%s", super.toString());
+        return String.format("[%s]%s", this.type, super.toString());
+    }
+
+    @Override
+    public String getFileString() {
+        return String.format("%s | %d | %s", type, isDone ? 1 : 0, description);
     }
 }