/// <summary>
/// Gets an app access token for for the application. The <see cref="ClientId"/> and <see cref="ClientSecret"/>
/// properties must be specified for the OAuth client.
/// </summary>
/// <returns>Returns an instance of <see cref="FacebookTokenResponse"/> representing the response.</returns>
public FacebookTokenResponse GetAppAccessToken()
{
// Some validation
if (String.IsNullOrWhiteSpace(Version))
{
throw new PropertyNotSetException("Version");
}
if (String.IsNullOrWhiteSpace(ClientId))
{
throw new PropertyNotSetException("ClientId");
}
if (String.IsNullOrWhiteSpace(ClientSecret))
{
throw new PropertyNotSetException("ClientSecret");
}
// Initialize the query string
IHttpQueryString query = new SocialHttpQueryString();
query.Add("client_id", ClientId);
query.Add("client_secret", ClientSecret);
query.Add("grant_type", "client_credentials");
// Make the call to the API
SocialHttpResponse response = SocialUtils.Http.DoHttpGetRequest("https://graph.facebook.com/" + Version + "/oauth/access_token", query);
// Parse the response
return(FacebookTokenResponse.ParseResponse(response));
}
/// <summary>
/// Attempts to renew a user access token. The specified <code>currentToken</code> must be valid.
/// </summary>
/// <param name="currentToken">The current access token.</param>
/// <returns>Returns an instance of <see cref="FacebookTokenResponse"/> representing the response.</returns>
public FacebookTokenResponse RenewAccessToken(string currentToken)
{
// Some validation
if (String.IsNullOrWhiteSpace(Version))
{
throw new PropertyNotSetException("Version");
}
if (String.IsNullOrWhiteSpace(ClientId))
{
throw new PropertyNotSetException("ClientId");
}
if (String.IsNullOrWhiteSpace(ClientSecret))
{
throw new PropertyNotSetException("ClientSecret");
}
if (String.IsNullOrWhiteSpace(currentToken))
{
throw new ArgumentNullException("currentToken");
}
// Initialize the query string
NameValueCollection query = new NameValueCollection {
{ "grant_type", "fb_exchange_token" },
{ "client_id", ClientId },
{ "client_secret", ClientSecret },
{ "fb_exchange_token", currentToken }
};
// Make the call to the API
SocialHttpResponse response = SocialUtils.Http.DoHttpGetRequest("https://graph.facebook.com/" + Version + "/oauth/access_token", query);
// Parse the response
return(FacebookTokenResponse.ParseResponse(response));
}
/// <summary>
/// Attempts to renew a user access token. The specified <paramref name="currentToken"/> must be valid.
/// </summary>
/// <param name="currentToken">The current access token.</param>
/// <returns>An instance of <see cref="FacebookTokenResponse"/> representing the response.</returns>
public FacebookTokenResponse RenewAccessToken(string currentToken)
{
// Some validation
if (string.IsNullOrWhiteSpace(Version))
{
throw new PropertyNotSetException(nameof(Version));
}
if (string.IsNullOrWhiteSpace(ClientId))
{
throw new PropertyNotSetException(nameof(ClientId));
}
if (string.IsNullOrWhiteSpace(ClientSecret))
{
throw new PropertyNotSetException(nameof(ClientSecret));
}
if (string.IsNullOrWhiteSpace(currentToken))
{
throw new ArgumentNullException(nameof(currentToken));
}
// Initialize the query string
IHttpQueryString query = new HttpQueryString();
query.Add("grant_type", "fb_exchange_token");
query.Add("client_id", ClientId);
query.Add("client_secret", ClientSecret);
query.Add("fb_exchange_token", currentToken);
// Make the call to the API
IHttpResponse response = HttpUtils.Http.DoHttpGetRequest("https://graph.facebook.com/" + Version + "/oauth/access_token", query);
// Parse the response
return(FacebookTokenResponse.ParseResponse(response));
}
/// <summary>
/// Exchanges the specified authorization code for an access token.
/// </summary>
/// <param name="authCode">The authorization code received from the Facebook OAuth dialog.</param>
/// <returns>Returns an instance of <see cref="FacebookTokenResponse"/> representing the response.</returns>
public FacebookTokenResponse GetAccessTokenFromAuthCode(string authCode)
{
// Some validation
if (String.IsNullOrWhiteSpace(Version))
{
throw new PropertyNotSetException("Version");
}
if (String.IsNullOrWhiteSpace(ClientId))
{
throw new PropertyNotSetException("ClientId");
}
if (String.IsNullOrWhiteSpace(ClientSecret))
{
throw new PropertyNotSetException("ClientSecret");
}
if (String.IsNullOrWhiteSpace(RedirectUri))
{
throw new PropertyNotSetException("RedirectUri");
}
if (String.IsNullOrWhiteSpace(authCode))
{
throw new ArgumentNullException("authCode");
}
// Initialize the query string
IHttpQueryString query = new SocialHttpQueryString();
query.Add("client_id", ClientId);
query.Add("redirect_uri", RedirectUri);
query.Add("client_secret", ClientSecret);
query.Add("code", authCode);
// Make the call to the API
SocialHttpResponse response = SocialUtils.Http.DoHttpGetRequest("https://graph.facebook.com/" + Version + "/oauth/access_token", query);
// Parse the response
return(FacebookTokenResponse.ParseResponse(response));
}
