completed

exercise.wwwapi/DTOs/Courses/CoursePostDTO.cs

@@ -0,0 +1,9 @@
+
+namespace exercise.wwwapi.DTOs.Courses
+{
+    public class CoursePostDTO
+    {
+        public string Name { get; set; }
+
+    }
+}

exercise.wwwapi/Endpoints/CourseEndpoints.cs

@@ -17,22 +17,109 @@ public static void ConfigureCourseEndpoints(this WebApplication app)
             var courses = app.MapGroup("courses");
             courses.MapGet("/", GetCourses).WithSummary("Returns all courses");
             courses.MapGet("/{id}", GetCourseById).WithSummary("Returns course with provided id");
-        }
+            courses.MapPost("/", CreateCourse).WithSummary("Create a new course");
+            courses.MapDelete("/{id}", DeleteCourseById).WithSummary("Delete a course");
+            courses.MapPut("/{id}", UpdateCourse).WithSummary("Update a course name");
+    }
 
 
         [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status404NotFound)]
         private static async Task<IResult> GetCourses(IRepository<Course> repository, ClaimsPrincipal claimsPrincipal)
         {
             var response = await repository.GetWithIncludes(c => c.Include(a => a.CourseModules).ThenInclude(b => b.Module).ThenInclude(d => d.Units).ThenInclude(u => u.Exercises));
+            if (response == null || response.Count == 0)
+            {
+                return TypedResults.NotFound("No courses found");
+            }
             var result = response.Select(c => new GetCourseDTO(c));
             return TypedResults.Ok(result);
         }
 
         [ProducesResponseType(StatusCodes.Status200OK)]
-        private static async Task<IResult> GetCourseById(IRepository<Course> repository, int id)
+        [ProducesResponseType(StatusCodes.Status404NotFound)]
+        private static async Task<IResult> GetCourseById(IRepository<Course> repository, int id, ClaimsPrincipal claimsPrincipal)
         {
             var response = await repository.GetByIdWithIncludes(c => c.Include(a => a.CourseModules).ThenInclude(b => b.Module).ThenInclude(d => d.Units).ThenInclude(u => u.Exercises), id);
+            if (response == null)
+            {
+                return TypedResults.NotFound("No course with the given id was found");
+            }
             var result = new GetCourseDTO(response);
             return TypedResults.Ok(result);
         }
-    }
+
+        [ProducesResponseType(StatusCodes.Status201Created)]
+        [ProducesResponseType(StatusCodes.Status400BadRequest)]
+        [ProducesResponseType(StatusCodes.Status401Unauthorized)]
+        private static async Task<IResult> CreateCourse(IRepository<Course> repository, CoursePostDTO postedCourse, ClaimsPrincipal claimsPrincipal)
+        {
+
+            if (claimsPrincipal.IsInRole("Teacher") == false)
+            {
+                return TypedResults.Unauthorized();
+            }
+            if (postedCourse == null || postedCourse.Name == null || postedCourse.Name == "")
+            {
+                    return TypedResults.BadRequest("Course data missing in request");
+            }
+
+            Course newCourse = new Course { Name = postedCourse.Name };
+            repository.Insert(newCourse);
+            await repository.SaveAsync();
+            GetCourseDTO response = new GetCourseDTO(newCourse);
+
+            return TypedResults.Created($"/courses/{newCourse.Id}", response);
+        }
+
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
+        [ProducesResponseType(StatusCodes.Status404NotFound)]
+        [ProducesResponseType(StatusCodes.Status401Unauthorized)]
+        private static async Task<IResult> DeleteCourseById(IRepository<Course> repository, int id, ClaimsPrincipal claimsPrincipal)
+        {
+            if (claimsPrincipal.IsInRole("Teacher") == false)
+            {
+                return TypedResults.Unauthorized();
+            }
+
+            Course? course = await repository.GetByIdAsync(id);
+            if(course == null)
+            {
+                return TypedResults.NotFound($"No course with the given id: {id} was found");
+            }
+            repository.Delete(course);
+            await repository.SaveAsync();
+
+            return TypedResults.NoContent();
+        }
+
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status404NotFound)]
+        [ProducesResponseType(StatusCodes.Status400BadRequest)]
+        [ProducesResponseType(StatusCodes.Status401Unauthorized)]
+        private static async Task<IResult> UpdateCourse(IRepository<Course> repository, int id, CoursePostDTO updatedCourse, ClaimsPrincipal claimsPrincipal)
+        {
+            if (claimsPrincipal.IsInRole("Teacher") == false)
+            {
+                return TypedResults.Unauthorized();
+            }
+
+            Course? course = await repository.GetByIdAsync(id);
+            if (course == null)
+            {
+                return TypedResults.NotFound($"No course with the given id: {id} was found");
+            }
+            if(updatedCourse == null || updatedCourse.Name == null || updatedCourse.Name == "")
+            {
+                return TypedResults.BadRequest("Missing update data in request");
+            }
+            course.Name = updatedCourse.Name;
+            repository.Update(course);
+            await repository.SaveAsync();
+
+            GetCourseDTO response = new GetCourseDTO(course);
+
+            return TypedResults.Ok(response);
+        }
+
+}