backend/src/main/java/core/api/controller/TaskController.java

@@ -37,18 +37,7 @@ public class TaskController {
             return ResponseEntity.status(404).body(new SimpleStatusResponse("failed"));
         }
 
-
-        if(status.equalsIgnoreCase("all")) {
         return ResponseEntity.ok(taskgroupPermissionResult.getResult().getTasks().stream().map(TaskEntityInfo::new));
-        } else if(status.equalsIgnoreCase("overdue")) {
-            //List overdue tasks
-            return ResponseEntity.ok(new SimpleStatusResponse("success"));
-        } else if(status.equalsIgnoreCase("upcoming")) {
-            //List upcoming tasks
-            return ResponseEntity.ok(new SimpleStatusResponse("success"));
-        } else {
-            return ResponseEntity.status(404).body(new SimpleStatusResponse("failed"));
-        }
     }
 
     @PutMapping("/tasks/{taskgroupID}")
@@ -69,4 +58,27 @@ public class TaskController {
             return ResponseEntity.ok(new TaskEntityInfo(creationResult.getResult()));
         }
     }
+
+    @PostMapping("/tasks/{taskID}")
+    public ResponseEntity<?> editTask(@PathVariable long taskID, @RequestBody @Valid TaskFieldInfo taskFieldInfo) {
+        PermissionResult<Task> taskPermissionResult = taskService.getTaskPermissions(taskID, SecurityContextHolder.getContext().getAuthentication().getName());
+        if (!taskPermissionResult.isHasPermissions()) {
+            return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
+        }
+
+        if (taskPermissionResult.getExitCode() == ServiceExitCode.MISSING_ENTITY) {
+            return ResponseEntity.status(404).body(new SimpleStatusResponse("failed"));
+        }
+
+        if(taskFieldInfo.getStartDate().isAfter(taskFieldInfo.getDeadline())) {
+            return ResponseEntity.status(400).body(new SimpleStatusResponse("failed"));
+        }
+
+        ServiceResult<Task> editorResult = taskService.editTask(taskPermissionResult.getResult(), taskFieldInfo);
+        if (editorResult.getExitCode() == ServiceExitCode.OK) {
+            return ResponseEntity.ok(new SimpleStatusResponse("success"));
+        } else  {
+            return ResponseEntity.status(409).body(new SimpleStatusResponse("failed"));
+        }
+    }
 }

backend/src/main/java/core/services/TaskService.java

@@ -9,6 +9,7 @@ import org.springframework.stereotype.Service;
 
 import java.util.Collection;
 import java.util.List;
+import java.util.Optional;
 
 @Service
 public class TaskService {
@@ -40,4 +41,24 @@ public class TaskService {
         }
         return false;
     }
+
+    public PermissionResult<Task> getTaskPermissions(long taskID, String name) {
+        Optional<Task> task = taskRepository.findById(taskID);
+        return task.map(value -> new PermissionResult<>(value, value.getTaskgroup().getUser().getUsername().equals(name))).orElseGet(() ->
+                new PermissionResult<>(ServiceExitCode.MISSING_ENTITY));
+    }
+
+    public ServiceResult<Task> editTask(Task task, TaskFieldInfo taskFieldInfo) {
+        if(!task.getTaskName().equals(taskFieldInfo.getTaskName()) && !existTaskByName(task.getTaskgroup().getTasks(), taskFieldInfo.getTaskName())) {
+            task.setTaskName(taskFieldInfo.getTaskName());
+
+        } else if(!task.getTaskName().equals(taskFieldInfo.getTaskName()) && existTaskByName(task.getTaskgroup().getTasks(), taskFieldInfo.getTaskName())) {
+            return new ServiceResult<>(ServiceExitCode.ENTITY_ALREADY_EXIST);
+        }
+        task.setEta(taskFieldInfo.getEta());
+        task.setStartDate(taskFieldInfo.getStartDate());
+        task.setDeadline(taskFieldInfo.getDeadline());
+        taskRepository.save(task);
+        return new ServiceResult<>(task);
+    }
 }