public async Task <OperationResult <JwtToken> > ConfirmEmailChange(string userId, string email, string token)
{
User user = await userManager.FindByIdAsync(userId);
OperationResult result = await emailConfirmationService.ConfirmEmailChange(user, email, token);
if (!result.IsValid)
{
return(result.Cast <JwtToken>());
}
// the information in the user's token is stale after the e-mail change
// - generate and send a new token with current user info
var encodedToken = tokenService.BuildToken(user);
return(OperationResult <JwtToken> .Valid(new JwtToken(encodedToken)));
}