public async Task <IActionResult> ExternalLoginCallback(string returnUrl = null, string remoteError = null)
{
if (remoteError != null)
{
ModelState.AddModelError(string.Empty, $"Error from external provider: {remoteError}");
return(View(nameof(Login)));
}
var info = await _signInManager.GetExternalLoginInfoAsync();
if (info == null)
{
return(RedirectToAction(nameof(Login)));
}
// Sign in the user with this external login provider if the user already has a login.
var user = await _userManager.FindByLoginAsync(info.LoginProvider, info.ProviderKey);
if (user != null)
{
await _signInManager.SignInAsync(user, isPersistent : false, authenticationMethod : info.LoginProvider);
if (!User.IsInRole("inactive"))
{
return(RedirectToAction("Index", "Home"));
}
await _signInManager.SignOutAsync();
return(View("InActiveAccount"));
}
// if no external login login, but email is already existed, create an external login
var email = info.Principal.FindFirstValue(ClaimTypes.Email);
var userInfo = await _userInfoManager.FindUserByEmailAsync(email);
if (userInfo != null)
{
var addLoginResult = await _userManager.AddLoginAsync(userInfo, info);
if (addLoginResult.Succeeded)
{
var claimResult = await _userManager.AddClaimsAsync(userInfo,
new Claim[]
{
new Claim(ClaimTypes.Email, userInfo.Email), new Claim(ClaimTypes.Name, userInfo.UserName)
});
if (claimResult.Succeeded)
{
if (await _userManager.IsInRoleAsync(userInfo, "inactive"))
{
await _signInManager.SignOutAsync();
return(View("InActiveAccount", userInfo));
}
await _signInManager.SignInAsync(userInfo, isPersistent : false,
authenticationMethod : info.LoginProvider);
return(RedirectToAction("Index", "Home"));
}
}
return(RedirectToAction(nameof(Login)));
}
return(View("NoAccount", email));
}