public async Task <Employee> CreateEmployeeAsync(Employee e)
{
// enforce the new immutable ID here, so if we expand to other consumers later the rule is still enforced
if (string.IsNullOrEmpty(e.ImmutableId))
{
e.ImmutableId = Guid.NewGuid().ToString();
}
// since cosmos' auto-generated IDs are all guids, need to come up with a shorthand here that's easy for humans to use
// todo: figure out something better than Random - sticking to 4 digits here for readability but obviously this would need to change
// todo: at this point, it might be cheaper to just ping the DB with the ID to check for a result rather than wait for and catch an exception, although not found throws an exception too
var r = new Random();
var empId = r.Next(0, 9999).ToString("D4");
e.CompanyId = empId;
try
{
var employeeRecord = await _repo.CreateDocumentAsync(e);
if (!employeeRecord.Success && employeeRecord.ErrorCode == "Conflict")
{
// retry, basically get a new ID because ours conflicted
e = await CreateEmployeeAsync(e);
}
//todo : handle other error cases better than rethrowing
else if (!employeeRecord.Success && employeeRecord.Exception != null)
{
throw employeeRecord.Exception;
}
else if (!employeeRecord.Success)
{
throw new Exception(employeeRecord.Message);
}
// todo: reconsider this, perhaps totally OOB photo uploading (for supporting multiple)
//e = await SaveEmployeePhoto(e);
return(e);
}
catch (Exception ex)
{
// todo: needs exception handling and retry for all these network calls
Console.WriteLine(ex);
}
// todo: hate to return null
return(null);
}