add endpoint /api/Course/GetStudents/{courseId}

Tsi1.Api/Tsi1.Api/Controllers/CourseController.cs

@@ -231,7 +231,7 @@ namespace Tsi1.Api.Controllers
             return Ok();
         }
 
-
+        [Authorize(Roles = UserTypes.Student + ", " + UserTypes.Professor + ", " + UserTypes.FacultyAdmin + ", " + UserTypes.UdelarAdmin)]
         [HttpGet("GetProfessors/{courseId}")]
         public async Task<IActionResult> GetProfessors(int courseId)
         {
@@ -244,6 +244,19 @@ namespace Tsi1.Api.Controllers
             return Ok(result.Data);
         }
 
+        [Authorize(Roles = UserTypes.Student + ", " + UserTypes.Professor + ", " + UserTypes.FacultyAdmin + ", " + UserTypes.UdelarAdmin)]
+        [HttpGet("GetStudents/{courseId}")]
+        public async Task<IActionResult> GetStudents(int courseId)
+        {
+            var result = await _courseService.GetStudents(courseId);
+            if (result.HasError)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok(result.Data);
+        }
+
         [Authorize(Roles = UserTypes.Student + ", " + UserTypes.Professor + ", " + UserTypes.FacultyAdmin)]
         [HttpGet("GetById/{courseId}")]
         public async Task<IActionResult> GetById(int courseId)

Tsi1.Api/Tsi1.BusinessLayer/Interfaces/ICourseService.cs

@@ -27,5 +27,6 @@ namespace Tsi1.BusinessLayer.Interfaces
         Task<ServiceResult<bool>> RemoveProfessorToCourse(ProfessorCourseDto professorCourseDto);
         Task<ServiceResult<List<UserPreviewDto>>> GetProfessors(int courseId);
         Task<ServiceResult<CourseDetailDto>> GetById(int courseId);
+        Task<ServiceResult<List<UserPreviewDto>>> GetStudents(int courseId);
     }
 }

Tsi1.Api/Tsi1.BusinessLayer/Services/CourseService.cs

@@ -427,5 +427,22 @@ namespace Tsi1.BusinessLayer.Services
 
             return result;
         }
+
+        public async Task<ServiceResult<List<UserPreviewDto>>> GetStudents(int courseId)
+        {
+            var result = new ServiceResult<List<UserPreviewDto>>();
+
+            var users = await _context.StudentCourses
+                .Include(x => x.Student)
+                    .ThenInclude(x => x.User)
+                .Where(x => x.CourseId == courseId)
+                .Select(x => x.Student.User)
+                .ToListAsync();
+
+            var userDtos = _mapper.Map<List<UserPreviewDto>>(users);
+
+            result.Data = userDtos;
+            return result;
+        }
     }
 }