/// <summary>
/// Add new login
/// </summary>
/// <param name="login">user's login</param>
/// <returns>ok</returns>
public async Task AddLogin(Logins login)
{
Logins existed = Logins.FirstOrDefault(x => x.Login == login.Login);
if (existed == null)
{
var role = Roles.LastOrDefault(x => x.Id > 0);
if (role != null)
{
login.RoleId = role.Id;
}
await Logins.AddAsync(login);
await SaveChangesAsync();
}
}