Update Task class represents a single to-do item with title, category, completion status, and timestamp

Author: Github-Saurabh0

src/main/java/Task.java

@@ -0,0 +1,119 @@
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+
+/**
+ * Task class represents a single to-do item with title, category, completion status, and timestamp
+ */
+public class Task {
+    private String title;
+    private String category;
+    private boolean completed;
+    private String createdAt;
+    private String completedAt;
+    
+    // Constructor
+    public Task(String title, String category) {
+        this.title = title;
+        this.category = category;
+        this.completed = false;
+        this.createdAt = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
+        this.completedAt = null;
+    }
+    
+    // Default constructor for Gson
+    public Task() {}
+    
+    // Getters
+    public String getTitle() {
+        return title;
+    }
+    
+    public String getCategory() {
+        return category;
+    }
+    
+    public boolean isCompleted() {
+        return completed;
+    }
+    
+    public String getCreatedAt() {
+        return createdAt;
+    }
+    
+    public String getCompletedAt() {
+        return completedAt;
+    }
+    
+    // Setters
+    public void setTitle(String title) {
+        this.title = title;
+    }
+    
+    public void setCategory(String category) {
+        this.category = category;
+    }
+    
+    public void setCompleted(boolean completed) {
+        this.completed = completed;
+        if (completed && this.completedAt == null) {
+            this.completedAt = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
+        } else if (!completed) {
+            this.completedAt = null;
+        }
+    }
+    
+    public void setCreatedAt(String createdAt) {
+        this.createdAt = createdAt;
+    }
+    
+    public void setCompletedAt(String completedAt) {
+        this.completedAt = completedAt;
+    }
+    
+    // Mark task as complete
+    public void markComplete() {
+        setCompleted(true);
+    }
+    
+    // Mark task as incomplete
+    public void markIncomplete() {
+        setCompleted(false);
+    }
+    
+    // Get status emoji
+    public String getStatusEmoji() {
+        return completed ? "✅" : "⏳";
+    }
+    
+    // Get category emoji
+    public String getCategoryEmoji() {
+        switch (category.toLowerCase()) {
+            case "work":
+                return "💼";
+            case "personal":
+                return "👤";
+            case "urgent":
+                return "🚨";
+            default:
+                return "📝";
+        }
+    }
+    
+    @Override
+    public String toString() {
+        return String.format("%s %s [%s%s] - %s (Created: %s)%s",
+            getStatusEmoji(),
+            title,
+            getCategoryEmoji(),
+            category,
+            completed ? "COMPLETED" : "PENDING",
+            createdAt,
+            completed && completedAt != null ? " (Completed: " + completedAt + ")" : ""
+        );
+    }
+    
+    // Simple string representation for display
+    public String toSimpleString() {
+        return String.format("%s %s [%s]", getStatusEmoji(), title, category);
+    }
+}