GET, PATCH and DELETE Task

todolist/src/main/java/com/scaler/todolist/controllers/TasksController.java

@@ -1,11 +1,13 @@
 package com.scaler.todolist.controllers;
 
 import com.scaler.todolist.models.Task;
+import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 
 import java.net.http.HttpResponse;
 import java.util.ArrayList;
+import java.util.Iterator;
 import java.util.List;
 
 @RequestMapping("/tasks")
@@ -21,7 +23,7 @@ ResponseEntity<List<Task>> getAllTasks() {
 
     @PostMapping("/")
     ResponseEntity<Task> addNewTask(@RequestBody Task task) {
-        Task taskToAdd = new Task(task.getName());
+        Task taskToAdd = new Task(task.getId(), task.getName());
         taskList.add(taskToAdd);
         return ResponseEntity.status(201).body(taskToAdd);
     }
@@ -38,6 +40,44 @@ ResponseEntity<Task> addNewTask(@RequestBody Task task) {
      *          delete task no 5 (response with correct HTTP code)
      *          if task 5 does not exist, send 404
      */
+    @GetMapping("/tasks/{id}")
+    ResponseEntity<Task> getTask(int id) {
+        for (var task: taskList) {
+            if(task.getId()==id) {
+                return ResponseEntity.status(200).body(task);
+            }
+        }
+        return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+    }
+
+    @PatchMapping("/tasks/{id}")
+    ResponseEntity<Task> updateTask(int id, @RequestBody Task body) {
+        for (var task: taskList) {
+            if(task.getId() == id) {
+                // update task and send response
+                task.setName(body.getName());
+                task.setDone(body.getDone());
+                task.setDue(body.getDue());
+                return ResponseEntity.status(200).body(task);
+            }
+        }
+        return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+    }
 
+    @DeleteMapping ("/tasks/{id}")
+    ResponseEntity<HttpStatus> deleteTask(int id) {
+        // Creating iterator object
+        Iterator itr = taskList.iterator();
 
+        // Holds true till there is single element
+        // remaining in the object
+        while (itr.hasNext()) {
+            Task x = (Task)itr.next();
+            if (x.getId() == id) {
+                itr.remove();
+                return new ResponseEntity<>(HttpStatus.OK);
+            }
+        }
+        return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+    }
 }

todolist/src/main/java/com/scaler/todolist/models/Task.java

@@ -7,12 +7,14 @@
 import java.time.temporal.TemporalUnit;
 import java.util.Calendar;
 import java.util.Date;
+import java.util.UUID;
 
 @AllArgsConstructor
 @NoArgsConstructor
 @Getter(AccessLevel.PUBLIC)
 @Setter(AccessLevel.PUBLIC)
 public class Task {
+    private int id;
     private String name;
     private LocalDate due;
     private Boolean done;
@@ -22,7 +24,7 @@ public class Task {
      * due date 5 days from now, and done = false
      * @param name
      */
-    public Task(String name) {
-        this(name, LocalDate.now().plus(5, ChronoUnit.DAYS), false);
+    public Task(int id, String name) {
+        this(id, name, LocalDate.now().plus(5, ChronoUnit.DAYS), false);
     }
 }