//Function - takes an accessToken and gets user info from facebook
public async Task <FacebookUserAuth> GetFBUserInfo(string accessToken)
{
//Creates the correct Url to access the facebook api
string url = "https://graph.facebook.com/me?access_token=" + accessToken + "&fields=email";
var httpClient = new HttpClient();
HttpResponseMessage httpResponseMessage;
FacebookUserAuth content = new FacebookUserAuth();
try
{
//Calls the facebook api to get the user info
httpResponseMessage = await httpClient.GetAsync(url);
httpResponseMessage.EnsureSuccessStatusCode();
//Converts the http response to a JSON string
string strCont = await httpResponseMessage.Content.ReadAsStringAsync();
//Converts the string into a C# object we can use
JavaScriptSerializer js = new JavaScriptSerializer();
content = js.Deserialize <FacebookUserAuth>(strCont);
}
catch (Exception ex)
{
log.Error("Error getting FaceBook user information", ex);
}
return(content);
}
public async Task <HttpResponseMessage> RegisterThirdParty(string provider, ThirdPartyCompleteModel model)
{
string errorMsg = "provider";
try
{
Provider type;
//Checks the provider passed in through the api call and assigns the type and error message if linkedin, google, or facebook
switch (provider)
{
case "linkedin":
type = Provider.LinkedIn;
errorMsg = "LinkedIn";
break;
case "google":
type = Provider.Google;
errorMsg = "Google";
break;
case "facebook":
type = Provider.Facebook;
errorMsg = "Facebook";
break;
default: return(Request.CreateErrorResponse(HttpStatusCode.BadRequest, "No provider exists with this name"));
}
//If Facebook login call the service to get information from facebook
if (type == Provider.Facebook)
{
FacebookUserAuth userInfo = await _service.GetFBUserInfo(model.AccessToken);
model.Email = userInfo.Email;
model.ProviderId = userInfo.Id;
}
//Checks if the email exists in the database
int accountId = _service.CheckEmail(model.Email);
//If the email doesn't exist we need to register a new account
if (accountId == 0)
{
//Pass the information and role into the register function, and get back the new account id
accountId = Register(model, model.Role);
//If something went wrong return an error
if (accountId == -1)
{
return(Request.CreateErrorResponse(HttpStatusCode.BadRequest, "Login Error"));
}
}
SocialProviderUser spu = new SocialProviderUser();
spu.Email = model.Email;
spu.Id = accountId;
spu.ProviderId = model.ProviderId;
//Send the email, account id, and provider id to the login function
if (_service.LogIn(spu, type))
{
//If the login was successful, get the user information and send it back
ItemResponse <PersonViewModel> resp = new ItemResponse <PersonViewModel>();
resp.Item = _service.SelectPerson(spu.Id);
return(Request.CreateResponse(HttpStatusCode.OK, resp));
}
else
{
//If the login was unsuccessful, return an error
return(Request.CreateErrorResponse(HttpStatusCode.BadRequest, "Something went wrong logging in with " + errorMsg));
}
}
catch (Exception ex)
{
//If an exception occurs log it and return an error
log.Error("Error registering " + errorMsg + " account", ex);
return(Request.CreateErrorResponse(HttpStatusCode.BadRequest, "Something went wrong"));
}
}
