private async Task <IdentityResult> InitUserAsync(IdentityUser user, ExternalLoginInfo externalInfo)
{
var email = externalInfo.Principal.Identity.Name;
await _userStore.SetUserNameAsync(user, email, CancellationToken.None);
await _emailStore.SetEmailAsync(user, email, CancellationToken.None);
var result = await _userManager.CreateAsync(user);
var role = externalInfo.GetUserRole();
if (role != null)
{
await _userManager.AddToRoleAsync(user, role);
}
return(result);
}
private async Task UpdateUserRoleAsync(IdentityUser externalUser, ExternalLoginInfo externalInfo)
{
var roles = await _userManager.GetRolesAsync(externalUser);
if (roles.Count > 1)
{
throw new InvalidOperationException("Application support only single role assigned per user.");
}
var currentRole = roles.SingleOrDefault();
var externalRole = externalInfo.GetUserRole();
var isRoleChanged = currentRole != externalRole;
if (isRoleChanged && currentRole != null)
{
await _userManager.RemoveFromRoleAsync(externalUser, currentRole);
}
if (isRoleChanged && externalRole != null)
{
await _userManager.AddToRoleAsync(externalUser, externalRole);
}
}
