/// <summary>
/// This function extracts access_token from the response returned from web authentication broker
/// and uses that token to get user information using facebook graph api.
/// </summary>
/// <param name="responseData">responseData returned from AuthenticateAsync result.</param>
private async Task GetFacebookUserNameAsync(string responseData)
{
var decoder = new WwwFormUrlDecoder(responseData);
var error = decoder.TryGetValue("error");
if (error != null)
{
FacebookUserName.Text = $"Error: {error}";
return;
}
// You can store access token locally for further use.
string access_token = decoder.GetFirstValueByName("access_token");
string expires_in = decoder.TryGetValue("expires_in"); // expires_in is optional
HttpClient httpClient = new HttpClient();
Uri uri = new Uri($"https://graph.facebook.com/me?access_token={Uri.EscapeDataString(access_token)}");
HttpGetStringResult result = await httpClient.TryGetStringAsync(uri);
if (result.Succeeded)
{
JsonObject userInfo = JsonObject.Parse(result.Value).GetObject();
FacebookUserName.Text = userInfo.GetNamedString("name");
}
else
{
FacebookUserName.Text = "Error contacting Facebook";
}
}
private async Task <String> SendDataAsync(String Url)
{
HttpClient httpClient = new HttpClient();
HttpGetStringResult result = await httpClient.TryGetStringAsync(new Uri(Url));
if (result.Succeeded)
{
return(result.Value);
}
else
{
rootPage.NotifyUser("Error getting data from server." + result.ExtendedError.Message, NotifyType.StatusMessage);
return(null);
}
}
private async Task <string> GetTwitterRequestTokenAsync(string twitterCallbackUrl, string consumerKey)
{
// Acquiring a request token
string TwitterUrl = "https://api.twitter.com/oauth/request_token";
string nonce = GetNonce();
string timeStamp = GetTimeStamp();
string SigBaseStringParams = "oauth_callback=" + Uri.EscapeDataString(twitterCallbackUrl);
SigBaseStringParams += "&" + "oauth_consumer_key=" + consumerKey;
SigBaseStringParams += "&" + "oauth_nonce=" + nonce;
SigBaseStringParams += "&" + "oauth_signature_method=HMAC-SHA1";
SigBaseStringParams += "&" + "oauth_timestamp=" + timeStamp;
SigBaseStringParams += "&" + "oauth_version=1.0";
string SigBaseString = "GET&";
SigBaseString += Uri.EscapeDataString(TwitterUrl) + "&" + Uri.EscapeDataString(SigBaseStringParams);
string Signature = GetSignature(SigBaseString, TwitterClientSecret.Text);
TwitterUrl += "?" + SigBaseStringParams + "&oauth_signature=" + Uri.EscapeDataString(Signature);
HttpClient httpClient = new HttpClient();
string request_token = null;
HttpGetStringResult result = await httpClient.TryGetStringAsync(new Uri(TwitterUrl));
if (result.Succeeded)
{
string oauth_token_secret = null;
string[] keyValPairs = result.Value.Split('&');
for (int i = 0; i < keyValPairs.Length; i++)
{
string[] splits = keyValPairs[i].Split('=');
switch (splits[0])
{
case "oauth_token":
request_token = splits[1];
break;
case "oauth_token_secret":
oauth_token_secret = splits[1];
break;
}
}
}
return(request_token);
}
/// <summary>
/// This function extracts access_token from the response returned from web authentication broker
/// and uses that token to get user information using facebook graph api.
/// </summary>
/// <param name="responseData">responseData returned from AuthenticateAsync result.</param>
private async Task GetFacebookUserNameAsync(string responseData)
{
var decoder = new WwwFormUrlDecoder(responseData);
var error = decoder.TryGetValue("error");
if (error != null)
{
FacebookUserName.Text = $"Error: {error}";
return;
}
// You can store access token locally for further use.
string access_token = decoder[0].Value;
this.fb_token = decoder[0].Value;
string expires_in = decoder.TryGetValue("expires_in"); // expires_in is optional
Windows.Web.Http.HttpClient httpClient = new Windows.Web.Http.HttpClient();
Uri uri = new Uri($"https://graph.facebook.com/me?fields=id,name,picture,birthday&access_token={Uri.EscapeDataString(access_token)}");
HttpGetStringResult result = await httpClient.TryGetStringAsync(uri);
if (result.Succeeded)
{
Windows.Data.Json.JsonObject userInfo = Windows.Data.Json.JsonObject.Parse(result.Value).GetObject();
FacebookUserName.Text = userInfo.GetNamedString("name");
this.userID = userInfo.GetNamedString("id");
}
else
{
FacebookUserName.Text = "Error contacting Facebook";
}
Windows.Web.Http.HttpClient httpClient2 = new Windows.Web.Http.HttpClient();
Uri uri2 = new Uri($"https://graph.facebook.com/{this.userID}/accounts?fields=name,access_token&access_token={this.fb_token}");
HttpGetStringResult myresult = await httpClient.TryGetStringAsync(uri2);
if (myresult.Succeeded)
{
Windows.Data.Json.JsonObject userInfo2 = Windows.Data.Json.JsonObject.Parse(myresult.Value).GetObject();
this.Page_token = userInfo2["data"].GetArray()[0].GetObject().GetNamedString("access_token");
}
else
{
Debug.Write("man ta osso!");
}
Windows.Web.Http.HttpClient httpClient3 = new Windows.Web.Http.HttpClient();
Uri uri3 = new Uri($"https://graph.facebook.com/{this.userID}/accounts?access_token={this.fb_token}");
HttpGetStringResult result3 = await httpClient.TryGetStringAsync(uri3);
if (result3.Succeeded)
{
Windows.Data.Json.JsonObject userInfo = Windows.Data.Json.JsonObject.Parse(result3.Value).GetObject();
this.PageId = userInfo["data"].GetArray()[0].GetObject().GetNamedString("id");
}
else
{
FacebookUserName.Text = "Error contacting Facebook";
}
}
