add undo delete feature

Author: ColtonRandall

src/main/java/com/taskmanagerapi/controller/TaskController.java

@@ -51,7 +51,7 @@ public ResponseEntity<Task> searchTaskByName(@PathVariable String name) {
     }
 
     @GetMapping("/tasks/search/status/{status}")
-    public ResponseEntity<List<Task>> searchTaskByStatus(@PathVariable TaskStatus status){
+    public ResponseEntity<List<Task>> searchTaskByStatus(@PathVariable TaskStatus status) {
         List<Task> tasks = taskService.searchTaskByStatus(status);
         return ResponseEntity.ok(tasks);
     }
@@ -69,4 +69,11 @@ public ResponseEntity<Task> deleteTask(@PathVariable String id) {
                 .map(ResponseEntity::ok)
                 .orElse(ResponseEntity.notFound().build());
     }
+
+    @PatchMapping("/tasks/{id}")
+    public ResponseEntity<Task> undoDelete(@PathVariable String id) {
+        return taskService.undoDelete(id)
+                .map(ResponseEntity::ok)
+                .orElse(ResponseEntity.notFound().build());
+    }
 }

src/main/java/com/taskmanagerapi/repository/TaskRepository.java

@@ -17,18 +17,18 @@ public void save(Task task) {
         taskStore.put(task.getId(), task);
     }
 
-   public List<Task> findAllTasks() {
-       return new ArrayList<>(taskStore.values());
-   }
+    public List<Task> findAllTasks() {
+        return new ArrayList<>(taskStore.values());
+    }
 
     public Optional<Task> findTaskById(String id) {
         return Optional.ofNullable(taskStore.get(id));
     }
 
-    public Optional<Task> findTaskByName(String name){
+    public Optional<Task> findTaskByName(String name) {
         return taskStore.values().stream()
-            .filter(task -> task.getName().equals(name))
-            .findFirst();
+                .filter(task -> task.getName().equals(name))
+                .findFirst();
     }
 
     public List<Task> findTasksByStatus(TaskStatus status) {
@@ -37,8 +37,7 @@ public List<Task> findTasksByStatus(TaskStatus status) {
                 .toList();
     }
 
-
-    public void delete(String id){
+    public void delete(String id) {
         taskStore.remove(id);
     }
 }

src/main/java/com/taskmanagerapi/service/TaskService.java

@@ -10,8 +10,7 @@
 import java.util.List;
 import java.util.Optional;
 
-import static com.taskmanagerapi.model.TaskStatus.DELETED;
-import static com.taskmanagerapi.model.TaskStatus.DONE;
+import static com.taskmanagerapi.model.TaskStatus.*;
 
 @Service
 public class TaskService {
@@ -33,11 +32,11 @@ public Optional<Task> getTask(String id) {
         return taskRepository.findTaskById(id);
     }
 
-    public Optional<Task> searchTaskByName(String name){
+    public Optional<Task> searchTaskByName(String name) {
         return taskRepository.findTaskByName(name);
     }
 
-    public List<Task> searchTaskByStatus(TaskStatus status){
+    public List<Task> searchTaskByStatus(TaskStatus status) {
         return taskRepository.findTasksByStatus(status);
     }
 
@@ -52,11 +51,24 @@ public Optional<Task> completeTask(String id) {
     public Optional<Task> deleteTask(String id) {
         return taskRepository.findTaskById(id).map(task -> {
             if (task.getStatus() == DELETED) {
-                logger.info("Task {} is already deleted", task.getName());
+                logger.info("Task '{}' is already deleted", task.getName());
             } else {
                 task.setStatus(DELETED); // soft delete
                 taskRepository.save(task);
-                logger.info("Task {} marked as DELETED", task.getName());
+                logger.info("Task '{}' has been deleted", task.getName());
+            }
+            return task;
+        });
+    }
+
+    public Optional<Task> undoDelete(String id) {
+        return taskRepository.findTaskById(id).map(task -> {
+            if (task.getStatus() == DELETED) {
+                task.setStatus(CREATED);
+                taskRepository.save(task);
+                logger.info("Task '{}' reactivated", task.getName());
+            } else {
+                logger.info("Task '{}' could not be reactivated", task.getName());
             }
             return task;
         });