private static JSONObject GetUserDetails(string UserID, string oAuthToken)
{
JSONObject obj = null;
string url;
HttpWebRequest request;
try
{
url = string.Format("https://graph.facebook.com/{0}?access_token={1}", UserID, oAuthToken);
//now send the request to facebook
request = WebRequest.Create(url) as HttpWebRequest;
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
StreamReader reader = new StreamReader(response.GetResponseStream());
string retVal = reader.ReadToEnd();
obj = JSONObject.CreateFromString(retVal);
if (obj.IsDictionary && obj.Dictionary.ContainsKey("error"))
{
throw new Exception(obj.Dictionary["error"].Dictionary["type"].String, new Exception(obj.Dictionary["error"].Dictionary["message"].String));
}
}
}
catch (Exception Ex)
{
throw Ex;
//LblMessage = new Label();
//LblMessage.Text = Ex.Message;
//this.Controls.Add(LblMessage);
}
return(obj);
}
private JSONObject GetUserGroups(string oAuthToken)
{
JSONObject obj = null;
string url;
HttpWebRequest request;
try
{
url = string.Format("https://graph.facebook.com/me/groups?access_token={1}", this.OAuthPageID.Trim().ToString(), oAuthToken);
request = WebRequest.Create(url) as HttpWebRequest;
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
StreamReader reader = new StreamReader(response.GetResponseStream());
string retVal = reader.ReadToEnd();
obj = JSONObject.CreateFromString(retVal);
if (obj.IsDictionary && obj.Dictionary.ContainsKey("error"))
{
throw new Exception(obj.Dictionary["error"].Dictionary["type"].String, new Exception(obj.Dictionary["error"].Dictionary["message"].String));
}
}
}
catch (Exception Ex)
{
LblMessage = new Label();
LblMessage.Text = Ex.Message;
this.Controls.Add(LblMessage);
}
return(obj);
}
private JSONObject GetFeeds(string FeedURL)
{
JSONObject obj = null;
string url;
HttpWebRequest request;
try
{
if (string.IsNullOrEmpty(FeedURL))
{
if (!String.IsNullOrEmpty(oAuthToken))
{
if (IsPosts)
{
//if we need to show the user feeds only then call posts rest api
url = string.Format("https://graph.facebook.com/{0}/posts?access_token={1}&limit={2}", this.UserID, oAuthToken, WallCount);
}
else
{
//else we need to call the feed rest api
url = string.Format("https://graph.facebook.com/{0}/feed?access_token={1}&limit={2}", this.UserID, oAuthToken, WallCount);
}
}
else
{
throw (new Exception("The access token returned was not valid."));
}
}
else
{
//this is the url that we got for next feed url...no need to generate the url from scratch
url = FeedURL;
}
//now send the request to facebook
request = WebRequest.Create(url) as HttpWebRequest;
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
StreamReader reader = new StreamReader(response.GetResponseStream());
string retVal = reader.ReadToEnd();
obj = JSONObject.CreateFromString(retVal);
if (obj.IsDictionary && obj.Dictionary.ContainsKey("error"))
{
throw new Exception(obj.Dictionary["error"].Dictionary["type"].String, new Exception(obj.Dictionary["error"].Dictionary["message"].String));
}
}
}
catch (Exception Ex)
{
LblMessage = new Label();
LblMessage.Text = Ex.Message;
this.Controls.Add(LblMessage);
}
return(obj);
}
/// <summary>
/// Get feeds from Facebook
/// </summary>
/// <param name="FeedURL"></param>
/// <returns></returns>
private JSONObject GetFeeds(string FeedURL)
{
JSONObject obj = null;
//Check for the JSON object in the cache and check for the feedurl to identify if the request is for the Older posts
if (HttpContext.Current.Cache.Get(CacheJSONKey) != null && string.IsNullOrEmpty(FeedURL))
{
//If the WebPart is edited then clear the cache
if (this.WebPartManager.DisplayMode == WebPartManager.EditDisplayMode)
{
HttpContext.Current.Cache.Remove(CacheJSONKey);
}
else
{
obj = HttpContext.Current.Cache.Get(CacheJSONKey) as JSONObject;
}
}
if (obj == null)
{
//Call for the OAuth method to get the feeds only if the request is for the first time ( not for the "Older Post")
if (string.IsNullOrEmpty(FeedURL))
{
if (string.IsNullOrEmpty(this.AuthToken))
{
oAuthToken = CommonHelper.GetOAuthToken("read_stream", OAuthClientID, OAuthRedirectUrl, OAuthClientSecret, OAuthCode);
this.AuthToken = oAuthToken;
this.SetPersonalizationDirty();
}
else
{
oAuthToken = this.AuthToken;
}
}
string url;
HttpWebRequest request;
try
{
if (string.IsNullOrEmpty(FeedURL))
{
if (!String.IsNullOrEmpty(oAuthToken))
{
if (IsPosts)
{
//if we need to show the user feeds only then call posts rest api
url = string.Format("https://graph.facebook.com/{0}/posts?access_token={1}&limit={2}", this.UserID, oAuthToken, WallCount);
}
else
{
//else we need to call the feed rest api
url = string.Format("https://graph.facebook.com/{0}/feed?access_token={1}&limit={2}", this.UserID, oAuthToken, WallCount);
}
}
else
{
throw (new Exception("The access token returned was not valid."));
}
}
else
{
//this is the url that we got for next feed url...no need to generate the url from scratch
url = FeedURL;
}
//now send the request to facebook
request = WebRequest.Create(url) as HttpWebRequest;
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
StreamReader reader = new StreamReader(response.GetResponseStream());
string retVal = reader.ReadToEnd();
obj = JSONObject.CreateFromString(retVal);
//Cache only first page posts (No older posts)
if (string.IsNullOrEmpty(FeedURL))
{
HttpContext.Current.Cache.Add(CacheJSONKey, obj, null, DateTime.Now.AddHours(1), TimeSpan.Zero, System.Web.Caching.CacheItemPriority.Normal, null);
}
if (obj.IsDictionary && obj.Dictionary.ContainsKey("error"))
{
throw new Exception(obj.Dictionary["error"].Dictionary["type"].String, new Exception(obj.Dictionary["error"].Dictionary["message"].String));
}
}
}
catch (Exception Ex)
{
LblMessage = new Label();
LblMessage.Text = Ex.Message;
this.Controls.Add(LblMessage);
}
}
return(obj);
}
