public async Task <IActionResult> Facebook([FromBody] FacebookVM model)
{
// 1.generate an app access token
var appId = _configuration.GetSection("FacebookAuthSettings").GetSection("AppId");
var appSecret = _configuration.GetSection("FacebookAuthSettings").GetSection("AppSecret");
try
{
var appAccessTokenResponse = await Client.GetStringAsync($"https://graph.facebook.com/oauth/access_token?client_id={appId.Value}&client_secret={appSecret.Value}&grant_type=client_credentials");
//var appAccessTokenResponse = await Client.GetStringAsync("https://www.google.com/");
var appAccessToken = JsonConvert.DeserializeObject <FacebookAppAccessToken>(appAccessTokenResponse);
// 2. validate the user access token
var userAccessTokenValidationResponse = await Client.GetStringAsync($"https://graph.facebook.com/debug_token?input_token={model.AccessToken}&access_token={appAccessToken.AccessToken}");
var userAccessTokenValidation = JsonConvert.DeserializeObject <FacebookUserAccessTokenValidation>(userAccessTokenValidationResponse);
}
catch (Exception ex)
{
}
// 3. we've got a valid token so we can request user data from fb
var userInfoResponse = await Client.GetStringAsync($"https://graph.facebook.com/v2.8/me?fields=id,email,first_name,last_name,name,gender,birthday,picture&access_token={model.AccessToken}");
var userInfo = JsonConvert.DeserializeObject <FacebookUserData>(userInfoResponse);
var user = await _userManager.FindByEmailAsync(userInfo.Email);
if (user == null)
{
var User = new User
{
FirstName = userInfo.FirstName,
LastName = userInfo.LastName,
IdentityProvider = "Facebook - " + userInfo.Id,
Email = userInfo.Email,
UserName = userInfo.Email,
};
var result = await _userManager.CreateAsync(User, Convert.ToBase64String(Guid.NewGuid().ToByteArray()).Substring(0, 8));
if (!result.Succeeded)
{
return(new OkObjectResult("User Creation Failed"));
}
await _appDbContext.BookSeekers.AddAsync(new BookSeeker { IdentityId = User.Id, Location = "", Gender = userInfo.Gender });
await _appDbContext.SaveChangesAsync();
}
// generate the jwt for the local user...
var localUser = await _userManager.FindByNameAsync(userInfo.Email);
if (localUser == null)
{
return(new OkObjectResult("login_failure , Failed to create local user account."));
}
var identity = _jwtTokenGenerator.GenerateClaimsIdentity(localUser.UserName, localUser.Id);
var response = new
{
id = identity.Claims.Single(c => c.Type == "id").Value,
auth_token = await _jwtTokenGenerator.GenerateJwtTokenAsync(localUser.UserName, identity),
expires_in = (int)_jwtOptions.ValidFor.TotalSeconds
};
var jwt = JsonConvert.SerializeObject(response, new JsonSerializerSettings {
Formatting = Formatting.Indented
});
return(new OkObjectResult(jwt));
}
public FacebookLoginPage()
{
InitializeComponent();
vm = new GoogleVM();
vm2 = new FacebookVM();
}
