private async Task ValidateStudent(AddStudentBlContract contract, Guid?id = null)
{
if (contract == null)
{
throw new ArgumentNullException("contract");
}
if (string.IsNullOrEmpty(contract.FirstName) || contract.FirstName.Length > 40)
{
throw new ArgumentException("This field is required and length must be less or equal 40", "FirstName");
}
if (string.IsNullOrEmpty(contract.LastName) || contract.LastName.Length > 40)
{
throw new ArgumentException("This field is required and length must be less or equal 40", "LastName");
}
if (!string.IsNullOrEmpty(contract.MiddleName) && contract.MiddleName.Length > 60)
{
throw new ArgumentException("Length must be less or equal 60", "MiddleName");
}
if (!string.IsNullOrEmpty(contract.Uid))
{
if (contract.Uid.Length < 6 || contract.Uid.Length > 16)
{
throw new ArgumentException("Length must be between 6 and 16", "uid");
}
IQueryable <Student> filter(IQueryable <Student> query)
{
if (!string.IsNullOrEmpty(contract.Uid))
{
query = query.Where(x => contract.Uid == x.Uid && x.Id != id);
}
return(query);
}
var count = await _studentDbService.GetStudentCount(filter);
if (count > 0)
{
throw new ArgumentException("This field must be unique", "uid");
}
}
}
public async Task <Guid> AddStudent(AddStudentBlContract contract)
{
await ValidateStudent(contract);
var newStudent = new Student
{
Deleted = false,
FirstName = contract.FirstName,
LastName = contract.LastName,
MiddleName = contract.MiddleName,
Sex = contract.Sex,
Uid = contract.Uid,
};
await _studentDbService.AddStudent(newStudent);
return(newStudent.Id);
}