public static IServiceCollection AddFacebookLogin(this IServiceCollection services, Action <FacebookLoginOptions> optionsAction = null)
{
var fbOptions = new FacebookLoginOptions();
optionsAction?.Invoke(fbOptions);
return(services
.AddSingleton(fbOptions)
.AddScoped <FacebookLoginService>());
}
public AccountService(
IOptions <JwtOptions> jwtOptions,
IOptions <FacebookLoginOptions> fbLoginOptions,
IOptions <EmailOptions> emailOptions,
SignInManager <ApplicationUser> signInManager,
UserManager <ApplicationUser> userManager,
IUserRepository userRepository,
IHttpClientFactory clientFactory,
IMapper mapper,
IEmailService emailService,
INotificationRepository notificationRepository
)
{
_jwtOptions = jwtOptions.Value;
_fbLoginOptions = fbLoginOptions.Value;
_emailOptions = emailOptions.Value;
_signInManager = signInManager;
_userManager = userManager;
_userRepository = userRepository;
_clientFactory = clientFactory;
_mapper = mapper;
_emailService = emailService;
_notificationRepository = notificationRepository;
}
public async Task InvokeAsync(HttpContext context, FacebookLoginService fbService, FacebookLoginOptions fbOptions)
{
try
{
var code = context.Request.Query["code"].ToString();
if (string.IsNullOrEmpty(code))
{
throw new ArgumentException("Query parameter 'code' does not exist");
}
var accessTokenRequest = new HttpRequestMessage(HttpMethod.Get,
string.Format("https://graph.facebook.com/v6.0/oauth/access_token?client_id={0}&client_secret={1}&redirect_uri={2}&code={3}",
configuration[fbOptions.ConfigurationKeys.AppId],
configuration[fbOptions.ConfigurationKeys.AppSecret],
UrlEncode(configuration[fbOptions.ConfigurationKeys.RedirectUri]),
code
));
var httpClient = clientFactory.CreateClient();
var accessTokenResponse = await httpClient.SendAsyncEx <AccessTokenDto>(accessTokenRequest);
var fields = string.Join(",", fbOptions.Fields);
var userDataRequest = new HttpRequestMessage(HttpMethod.Get,
$"https://graph.facebook.com/me?fields={fields}&access_token={accessTokenResponse.AccessToken}");
fbService.UserData = await httpClient.SendAsyncEx <UserDataDto>(userDataRequest);
}
catch (Exception e)
{
fbService.ErrorMessage = e.Message;
}
await next(context);
}
