Disqus callback

gistfile1.txt

	public function action_disqus() {

		$input = Input::all();
		if ( isset( $input['error'] ) ) {
			die( $input['error'] );
		}
		
		if( isset( $input['verify'] ) ) {

			$code = $input['code']; // A temporary token which you will exchange for a finalized access token.
			$username = $input['username']; // The username of the user who you're requesting authorization of.
			$userid = $input['user_id']; // A unique identifier for this user which is guaranteed not to change.
			$audiencesync_uri = urlencode($input['audiencesync_uri']); // The URL to which you will redirect the user once you've confirmed their authorization.
			$next_url = URL::to( "auth/disqus?user_id=".$userid."&success=1&code=".$code."&audiencesync_uri=".$audiencesync_uri );

			return View::make( 'auth.disqus_verify', array( 'next_url' => $next_url ) );
			
		} else {
			
			// Get the code for request access
			$code = $input['code'];
			$audiencesync_uri = urldecode($input['audiencesync_uri']);

			// Request the access token
			$disqus_key = Config::get('disqus.secret_key');
			$disqus_public = Config::get('disqus.public_key');
		
			$url = 'https://disqus.com/api/oauth/2.0/access_token/';
			$fields = array(
            	'grant_type'	=> urlencode( "audiencesync" ),
            	'code'			=> urlencode( $code ),
				'client_id'		=> urlencode( $disqus_public ),
				'client_secret' => urlencode( $disqus_key ),
				'redirect_uri'	=> URL::to( 'auth/disqus?verify=1' )
			);

			$fields_string = http_build_query($fields, NULL, '&');

			//open connection
		    $ch = curl_init();
		
		    //set the url, number of POST vars, POST data
		    curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
		    curl_setopt( $ch, CURLOPT_URL, $url );
		    curl_setopt( $ch, CURLOPT_POST, count( $fields ) );
		    curl_setopt( $ch, CURLOPT_POSTFIELDS, $fields_string );
		
		    //execute post
		    $result = curl_exec($ch);
		
		    //close connection
		    curl_close($ch);
		    
		    $auth_results = json_decode( $result );	
		    
		    if( isset( $auth_results->error ) ) {	
		    	var_dump( $auth_results );
		    	exit;
		    }

			// Extract access token and render
			$access_token = $auth_results->access_token;
			$user_id = $auth_results->user_id;
			$success = $input['success'];
			
			$completion_url = $audiencesync_uri."?client_id=".$disqus_public."&user_id=".$user_id."&access_token=".$access_token."&success=".$success;

			return View::make( 'auth.disqus_success', array( 'redirect_url' => $redirect_url ) );
		}
	}