public async Task<IdentityUser> RegisterUserIfNotFound(User userModel)
{
if (await _userManager.FindByNameAsync(userModel.UserName) == null)
{
await RegisterUserAsync(userModel);
}
return await FindUserAsync(userModel);
}
private async Task<IdentityResult> RegisterUserAsync(User userModel)
{
var user = new IdentityUser
{
UserName = userModel.UserName
};
var result = await _userManager.CreateAsync(user, userModel.Password);
return result;
}
public override async Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context)
{
context.OwinContext.Response.Headers.Add("Access-Control-Allow-Origin", new[] { "*" });
var userModel = new User
{
UserName = context.UserName,
Password = context.Password
};
var user = await _authRepository.RegisterUserIfNotFound(userModel);
if (user == null)
{
context.SetError("invalid_grant", "The user name or password is incorrect.");
context.Rejected();
return;
}
var identity = new ClaimsIdentity(context.Options.AuthenticationType);
identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, user.Id));
context.Validated(identity);
}
public async Task<IdentityUser> FindUserAsync(User userModel)
{
var user = await _userManager.FindAsync(userModel.UserName, userModel.Password);
return user;
}