public async Task <(IdentityResult Result, JwtToken Token)> Login(string username, string password)
{
var user = await _manager.FindByNameAsync(username);
var isChecked = await _manager.CheckPasswordAsync(user, password);
if (user == null || !isChecked)
{
throw new UnauthorizedAccessException();
}
return(IdentityResult.Success(), new JwtToken {
Value = CreateToken(user)
});
}