parent id fix

api/src/Controllers/StudentController.cs

@@ -163,6 +163,30 @@ public class StudentController : BaseController
             });
         }
 
+        if (dto.GoalParentId.HasValue)
+        {
+            var summary = await _studentRepository.GetGoalSummaryAsync(idStudent);
+            var parentGoal = summary?.Goals.FirstOrDefault(g => g.GoalId == dto.GoalParentId.Value);
+
+            if (parentGoal is null)
+            {
+                return BadRequest(new ResponseResult<StudentGoalItem>
+                {
+                    Success = false,
+                    Message = "Parent goal not found."
+                });
+            }
+
+            if (parentGoal.GoalParentId.HasValue)
+            {
+                return BadRequest(new ResponseResult<StudentGoalItem>
+                {
+                    Success = false,
+                    Message = "The selected parent goal already has a parent."
+                });
+            }
+        }
+
         var created = await _studentRepository.InsertGoalAsync(idStudent, userId, dto);
         if (created is null)
         {

api/src/DataAccess/Models/DataTransferObjects/CreateGoalDto.cs

@@ -5,4 +5,5 @@ public class CreateGoalDto
     public string? Title { get; set; }
     public string? Description { get; set; }
     public string? Category { get; set; }
+    public Guid? GoalParentId { get; set; }
 }

api/src/DataAccess/Repositories/StudentRepository.cs

@@ -110,6 +110,7 @@ public class StudentRepository
             new
             {
                 p_id_goal = newGoalId.ToString(),
+                p_id_goal_parent = dto.GoalParentId?.ToString(),
                 p_id_student = idStudent.ToString(),
                 p_id_user = userId.ToString(),
                 p_title = dto.Title,