public async Task <Course> AddCourseAsync(int teacherId, DateTime start, DateTime end, string courseName)
{
var teacher = await this.context.Users.FirstOrDefaultAsync(us => us.Id == teacherId);
if (teacher.RoleId != 2)
{
throw new IncorrectPermissionsException("You don't have access.");
}
if (this.context.Courses.Any(co => co.Name == courseName))
{
throw new EntityAlreadyExistsException("Course already exists");
}
var course = new Course
{
Name = courseName,
TeacherId = teacher.Id,
Start = start,
End = end
};
context.Courses.Add(course);
await context.SaveChangesAsync();
return(course);
}
public async Task UpdateRoleAsync(int userId, int newRoleId)
{
Validations.RangeNumbers(0, int.MaxValue, userId, Validations.POSITIVE_ERROR);
if (newRoleId == 1)
{
throw new IncorrectPermissionsException("You are not allowed to set someone's role to Adminitrator");
}
var user = await GetUserByIdAsync(userId);
if (user == null)
{
throw new ArgumentNullException("User doesn't exist");
}
user.RoleId = newRoleId;
var role = context.UserRoles.FirstOrDefault(r => r.UserId == userId);
context.UserRoles.Remove(role);
context.UserRoles.Add(new IdentityUserRole <int>()
{
RoleId = newRoleId,
UserId = user.Id
});
await context.SaveChangesAsync();
}
public async Task GetCourseByIdShouldReturnCorrectCourse()
{
var contextOptions = new DbContextOptionsBuilder <AcademySiteContext>()
.UseInMemoryDatabase(databaseName: "GetCourseByIdShouldReturnCorrectCourse")
.Options;
using (var context = new AcademySiteContext(contextOptions))
{
context.Courses.Add(new Course()
{
CourseId = 1,
Name = "DummyCourse",
Start = DateTime.Now,
Teacher = new User {
Id = 1, UserName = "******"
}
});
await context.SaveChangesAsync();
}
using (var context = new AcademySiteContext(contextOptions))
{
var courseService = new CourseService(context);
var result = await courseService.GetCourseByIdAsync(1);
Assert.IsTrue(result != null && result.Name == "DummyCourse");
}
}