controller and service

Tsi1.Api/Tsi1.Api/Controllers/StudentCourseResultController.cs

+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Tsi1.BusinessLayer.Dtos;
+using Tsi1.BusinessLayer.Helpers;
+using Tsi1.BusinessLayer.Interfaces;
+
+namespace Tsi1.Api.Controllers
+{
+    [Route("api/[controller]")]
+    [ApiController]
+    public class StudentCourseResultController : ControllerBase
+    {
+        private readonly IStudentCourseResultService _studentCourseResultService;
+
+        public StudentCourseResultController(IStudentCourseResultService studentCourseResultService)
+        {
+            _studentCourseResultService = studentCourseResultService;
+        }
+
+        [Authorize(Roles = UserTypes.Student)]
+        [HttpGet("GetMyHistoricResults/{courseId}")]
+        public async Task<IActionResult> GetMyHistoricResults(int courseId)
+        {
+            var userId = int.Parse(HttpContext.User.Claims.FirstOrDefault(x => x.Type == "Id").Value);
+
+            var result = await _studentCourseResultService.GetMyHistoricResults(courseId, userId);
+
+            if (result.HasError)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok(result.Data);
+        }
+
+        [Authorize(Roles = UserTypes.Student)]
+        [HttpGet("GetMyLastResult/{courseId}")]
+        public async Task<IActionResult> GetMyLastResult(int courseId)
+        {
+            var userId = int.Parse(HttpContext.User.Claims.FirstOrDefault(x => x.Type == "Id").Value);
+
+            var result = await _studentCourseResultService.GetMyLastResult(courseId, userId);
+
+            if (result.HasError)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok(result.Data);
+        }
+
+        [Authorize(Roles = UserTypes.Professor)]
+        [HttpGet("GetLastStudentCourseResults/{courseId}")]
+        public async Task<IActionResult> GetLastStudentCourseResults(int courseId)
+        {
+            var userId = int.Parse(HttpContext.User.Claims.FirstOrDefault(x => x.Type == "Id").Value);
+
+            var result = await _studentCourseResultService.GetLastStudentCourseResults(courseId, userId);
+
+            if (result.HasError)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok(result.Data);
+        }
+
+        [Authorize(Roles = UserTypes.FacultyAdmin + ", " + UserTypes.Professor)]
+        [HttpPost("Create")]
+        public async Task<IActionResult> Create(StudentCourseResultCreateDto studentCourseResultDto)
+        {
+            var userId = int.Parse(HttpContext.User.Claims.FirstOrDefault(x => x.Type == "Id").Value);
+
+            var result = await _studentCourseResultService.Create(studentCourseResultDto, userId);
+
+            if (result.HasError)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok(result.Data);
+        }    
+
+        [Authorize(Roles = UserTypes.Professor)]
+        [HttpDelete("Delete/{studentCourseResultId}")]
+        public async Task<IActionResult> Delete(int studentCourseResultId)
+        {
+            var userId = int.Parse(HttpContext.User.Claims.FirstOrDefault(x => x.Type == "Id").Value);
+
+            var result = await _studentCourseResultService.Delete(studentCourseResultId, userId);
+
+            if (result.HasError)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok();
+        }
+    }
+}

Tsi1.Api/Tsi1.Api/Startup.cs

@@ -108,6 +108,7 @@ namespace Tsi1.Api
             services.AddScoped<IActivityService, ActivityService>();
             services.AddScoped<IEvaluationService, EvaluationService>();
             services.AddScoped<IEvaluationTypeService, EvaluationTypeService>();
+            services.AddScoped<IStudentCourseResultService, StudentCourseResultService>();
 
             services.AddSingleton<PresenceTracker>();
 

Tsi1.Api/Tsi1.BusinessLayer/Interfaces/IStudentCourseResultService.cs

+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading.Tasks;
+using Tsi1.BusinessLayer.Dtos;
+using Tsi1.BusinessLayer.Helpers;
+
+namespace Tsi1.BusinessLayer.Interfaces
+{
+    public interface IStudentCourseResultService
+    {
+        Task<ServiceResult<int>> Create(StudentCourseResultCreateDto studentCourseResultDto, int userId);
+
+        Task<ServiceResult<int>> Delete(int studentCourseResultId, int userId);
+
+        Task<ServiceResult<List<StudentCourseResultPreviewDto>>> GetMyHistoricResults(int courseId, int userId);
+
+        Task<ServiceResult<StudentCourseResultPreviewDto>> GetMyLastResult(int courseId, int userId);
+
+        Task<ServiceResult<List<StudentCourseResultPreviewDto>>> GetLastStudentCourseResults(int courseId, int userId);
+    }
+}

Tsi1.Api/Tsi1.BusinessLayer/Services/ActivityService.cs

@@ -151,7 +151,11 @@ namespace Tsi1.BusinessLayer.Services
                 return result;
             }
 
-            var activities = await _context.Activities.AsNoTracking().Where(x => x.CourseId == courseId).ToListAsync();
+            var activities = await _context.Activities
+                .AsNoTracking()
+                .Where(x => x.CourseId == courseId)
+                .OrderBy(x => x.Date)
+                .ToListAsync();
 
             result.Data = _mapper.Map<List<ActivityDto>>(activities);
             return result;

Tsi1.Api/Tsi1.BusinessLayer/Services/StudentCourseResultService.cs

+using AutoMapper;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Tsi1.BusinessLayer.Dtos;
+using Tsi1.BusinessLayer.Helpers;
+using Tsi1.BusinessLayer.Interfaces;
+using Tsi1.DataLayer;
+using Tsi1.DataLayer.Entities;
+
+namespace Tsi1.BusinessLayer.Services
+{
+    public class StudentCourseResultService : IStudentCourseResultService
+    {
+        private readonly Tsi1Context _context;
+        private readonly IMapper _mapper;
+
+        public StudentCourseResultService(Tsi1Context context, IMapper mapper)
+        {
+            _context = context;
+            _mapper = mapper;
+        }
+
+        public async Task<ServiceResult<int>> Create(StudentCourseResultCreateDto studentCourseResultDto, int userId)
+        {
+            var result = new ServiceResult<int>();
+
+            var studentValidation = await this.StudentCourseResultValidations(studentCourseResultDto.CourseId, studentCourseResultDto.StudentId);
+
+            if (studentValidation.HasError)
+            {
+                result.HasError = true;
+                result.AddMessage(studentValidation.Message);
+                return result;
+            }
+
+            var courseResult = await _context.StudentCourseResults
+                .AsNoTracking()
+                .FirstOrDefaultAsync(x => x.StudentId == studentCourseResultDto.StudentId
+                    && x.CourseId == studentCourseResultDto.CourseId
+                    && x.Result >= CourseApproval.MinimumApproval);
+
+            if (courseResult != null)
+            {
+                result.HasError = true;
+                result.AddMessage(string.Format(ErrorMessages.CourseAlreadyApproved, studentCourseResultDto.StudentId, studentCourseResultDto.CourseId));
+                return result;
+            }
+
+            var professorValidation = await this.ProfessorValidations(studentCourseResultDto.CourseId, userId);
+
+            if (professorValidation.HasError)
+            {
+                result.HasError = true;
+                result.AddMessage(professorValidation.Message);
+                return result;
+            }
+
+            var studentCourseResult = _mapper.Map<StudentCourseResult>(studentCourseResultDto);
+            studentCourseResult.Date = DateTime.Now;
+
+            _context.StudentCourseResults.Add(studentCourseResult);
+
+            await _context.SaveChangesAsync();
+
+            result.Data = studentCourseResult.Id;
+            return result;
+        }
+
+        public async Task<ServiceResult<int>> Delete(int studentCourseResultId, int userId)
+        {
+            var result = new ServiceResult<int>();
+
+            var studentCourseResult = await _context.StudentCourseResults.FirstOrDefaultAsync(x => x.Id == studentCourseResultId);
+
+            if (studentCourseResult == null)
+            {
+                result.HasError = true;
+                result.AddMessage(string.Format(ErrorMessages.StudentCourseResultDoesNotExist, studentCourseResultId));
+                return result;
+            }
+
+            var professorValidation = await this.ProfessorValidations(studentCourseResult.CourseId, userId);
+
+            if (professorValidation.HasError)
+            {
+                result.HasError = true;
+                result.AddMessage(professorValidation.Message);
+                return result;
+            }
+
+            _context.StudentCourseResults.Remove(studentCourseResult);
+
+            await _context.SaveChangesAsync();
+
+            return result;
+        }
+
+        public async Task<ServiceResult<List<StudentCourseResultPreviewDto>>> GetLastStudentCourseResults(int courseId, int userId)
+        {
+            var result = new ServiceResult<List<StudentCourseResultPreviewDto>>();
+
+            var professorValidation = await this.ProfessorValidations(courseId, userId);
+
+            if (professorValidation.HasError)
+            {
+                result.HasError = true;
+                result.AddMessage(professorValidation.Message);
+                return result;
+            }
+
+            var studentIds = await _context.StudentCourses
+                .AsNoTracking()
+                .Where(x => x.CourseId == courseId)
+                .Select(x => x.StudentId)
+                .ToListAsync();
+
+            var auxStudentCourseResults = await _context.StudentCourseResults
+                .AsNoTracking()
+                .Where(x => x.CourseId == courseId && studentIds.Contains(x.StudentId))
+                .ToListAsync();
+
+            var studentCourseResults = auxStudentCourseResults.GroupBy(x => new { x.StudentId, x.CourseId })
+                .Select(x => x.OrderByDescending(g => g.Date).First())
+                .ToList();
+
+            result.Data = _mapper.Map<List<StudentCourseResultPreviewDto>>(studentCourseResults);
+
+            return result;
+        }
+
+        public async Task<ServiceResult<List<StudentCourseResultPreviewDto>>> GetMyHistoricResults(int courseId, int userId)
+        {
+            var result = new ServiceResult<List<StudentCourseResultPreviewDto>>();
+
+            var userValidation = await this.UserValidation(userId);
+
+            if (userValidation.HasError)
+            {
+                result.HasError = true;
+                result.AddMessage(userValidation.Message);
+                return result;
+            }
+
+            var studentId = userValidation.Data;
+
+            var studentValidation = await this.StudentCourseResultValidations(courseId, studentId);
+
+            if (studentValidation.HasError)
+            {
+                result.HasError = true;
+                result.AddMessage(studentValidation.Message);
+                return result;
+            }
+
+            var studentCourseResults = await _context.StudentCourseResults
+                .AsNoTracking()
+                .Where(x => x.CourseId == courseId && x.StudentId == studentId)
+                .OrderByDescending(x => x.Date)
+                .ToListAsync();
+
+            result.Data = _mapper.Map<List<StudentCourseResultPreviewDto>>(studentCourseResults);
+
+            return result;
+        }
+
+        public async Task<ServiceResult<StudentCourseResultPreviewDto>> GetMyLastResult(int courseId, int userId)
+        {
+            var result = new ServiceResult<StudentCourseResultPreviewDto>();
+
+            var userValidation = await this.UserValidation(userId);
+
+            if (userValidation.HasError)
+            {
+                result.HasError = true;
+                result.AddMessage(userValidation.Message);
+                return result;
+            }
+
+            var studentId = userValidation.Data;
+
+            var studentValidation = await this.StudentCourseResultValidations(courseId, studentId);
+
+            if (studentValidation.HasError)
+            {
+                result.HasError = true;
+                result.AddMessage(studentValidation.Message);
+                return result;
+            }
+
+            var studentCourseResult = await _context.StudentCourseResults
+                .AsNoTracking()
+                .Where(x => x.CourseId == courseId && x.StudentId == studentId)
+                .OrderByDescending(x => x.Date)
+                .FirstOrDefaultAsync();
+
+            result.Data = _mapper.Map<StudentCourseResultPreviewDto>(studentCourseResult);
+
+            return result;
+        }
+
+        private async Task<ServiceResult<int>> StudentCourseResultValidations(int courseId, int studentId)
+        {
+            var result = new ServiceResult<int>();
+
+            var student = await _context.Students
+                .AsNoTracking()
+                .FirstOrDefaultAsync(x => x.Id == studentId);
+
+            if (student == null)
+            {
+                result.HasError = true;
+                result.AddMessage(string.Format(ErrorMessages.StudentDoesNotExist, studentId));
+                return result;
+            }
+
+            var course = await _context.Courses
+                .AsNoTracking()
+                .FirstOrDefaultAsync(x => x.Id == courseId);
+
+            if (course == null)
+            {
+                result.HasError = true;
+                result.AddMessage(string.Format(ErrorMessages.CourseDoesNotExist, courseId));
+                return result;
+            }
+
+            var studentCourse = await _context.StudentCourses
+                .AsNoTracking()
+                .FirstOrDefaultAsync(x => x.CourseId == courseId && x.StudentId == studentId);
+
+            if (studentCourse == null)
+            {
+                result.HasError = true;
+                result.AddMessage(string.Format(ErrorMessages.StudentCourseDoesNotExists, studentId, courseId));
+                return result;
+            }
+
+            return result;
+        }
+
+        private async Task<ServiceResult<int>> ProfessorValidations(int courseId, int userId)
+        {
+            var result = new ServiceResult<int>();
+
+            var user = await _context.Users
+                .AsNoTracking()
+                .Include(x => x.Professor)
+                .FirstOrDefaultAsync(x => x.Id == userId);
+
+            if (user == null || user.Professor == null)
+            {
+                result.HasError = true;
+                result.AddMessage(string.Format(ErrorMessages.UserDoesNotExist, userId));
+                return result;
+            }
+
+            var course = await _context.Courses
+                .AsNoTracking()
+                .FirstOrDefaultAsync(x => x.Id == courseId);
+
+            if (course == null)
+            {
+                result.HasError = true;
+                result.AddMessage(string.Format(ErrorMessages.CourseDoesNotExist, course));
+                return result;
+            }
+
+            var professorCourse = await _context.ProfessorCourses
+                .AsNoTracking()
+                .FirstOrDefaultAsync(x => x.CourseId == courseId && x.ProfessorId == user.ProfessorId);
+
+            if (professorCourse == null)
+            {
+                result.HasError = true;
+                result.AddMessage(string.Format(ErrorMessages.ProfessorCourseDoesNotExists, user.ProfessorId, courseId));
+                return result;
+            }
+
+            
+
+            return result;
+        }
+
+        private async Task<ServiceResult<int>> UserValidation(int userId)
+        {
+            var result = new ServiceResult<int>();
+
+            var user = await _context.Users
+                .AsNoTracking()
+                .FirstOrDefaultAsync(x => x.Id == userId);
+
+            if (user == null)
+            {
+                result.HasError = true;
+                result.AddMessage(string.Format(ErrorMessages.UserDoesNotExist, userId));
+                return result;
+            }
+
+            result.Data = (int)user.StudentId;
+            return result;
+        }
+    }
+}