Assignment for GET, PATCH, DELETE

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

@@ -1,10 +1,14 @@
 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.time.LocalDate;
+import java.time.temporal.ChronoUnit;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -39,5 +43,47 @@ ResponseEntity<Task> addNewTask(@RequestBody Task task) {
      *          if task 5 does not exist, send 404
      */
 
+     @GetMapping("/tasks/{id}")
+     public ResponseEntity<Task> getTaskById(@PathVariable String id){
+         Task t = findTaskById(id);
+         if(t!=null){
+             return ResponseEntity.status(404).body(t);
+         }else{
+             return ResponseEntity.ok(t);
+         }
+
+
+     }
+     private Task findTaskById(String id){
+        for(Task t: taskList){
+            if(t.getName().equals(id)){
+                return t;
+            }
+        }
+        return null;
+    }
+
+    @PatchMapping("/tasks/{id}")
+    public ResponseEntity updateTaskById(@PathVariable String id){
+        Task t = findTaskById(id);
+        if(t!=null){
+            t.setDue(LocalDate.now().plus(5, ChronoUnit.DAYS));
+            return new ResponseEntity(HttpStatus.OK);
+        }else{
+            return new ResponseEntity(HttpStatus.NOT_FOUND);
+        }
+    }   
+
+    @DeleteMapping("/tasks/{id}")
+    public ResponseEntity deleteTaskById(@PathVariable String id){
+        Task t = findTaskById(id);
+        if(t!=null){
+            taskList.remove(t);
+            return new ResponseEntity(HttpStatus.OK);
+        }else{
+            return new ResponseEntity(HttpStatus.NOT_FOUND);
+        }
+    } 
+
 
 }