//   SparkleShare, a collaboration and sharing tool.

//   Copyright (C) 2010  Hylke Bons <hylkebons@gmail.com>

//

//   This program is free software: you can redistribute it and/or modify

//   it under the terms of the GNU General Public License as published by

//   the Free Software Foundation, either version 3 of the License, or

//   (at your option) any later version.

//

//   This program is distributed in the hope that it will be useful,

//   but WITHOUT ANY WARRANTY; without even the implied warranty of

//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

//   GNU General Public License for more details.

//

//   You should have received a copy of the GNU General Public License

//   along with this program. If not, see <http://www.gnu.org/licenses/>.





using System;

using System.Net;

using System.Threading;



namespace SparkleShare {



    public class SparkleAboutController {



        public event Action ShowWindowEvent = delegate { };

        public event Action HideWindowEvent = delegate { };



        public event UpdateLabelEventDelegate UpdateLabelEvent = delegate { };

        public delegate void UpdateLabelEventDelegate (string text);



        public readonly string WebsiteLinkAddress       = "http://www.sparkleshare.org/";

        public readonly string CreditsLinkAddress       = "http://github.com/hbons/SparkleShare/blob/master/legal/Authors.txt";

        public readonly string ReportProblemLinkAddress = "http://www.github.com/hbons/SparkleShare/issues";

        public readonly string DebugLogLinkAddress      = "file://" + Program.Controller.Config.LogFilePath;



        public string RunningVersion;





        public SparkleAboutController ()

        {

            RunningVersion = SparkleLib.SparkleBackend.Version;



            Program.Controller.ShowAboutWindowEvent += delegate {

                ShowWindowEvent ();

                new Thread (() => CheckForNewVersion ()).Start ();

            };

        }





        public void WindowClosed ()

        {

            HideWindowEvent ();

        }





        private void CheckForNewVersion ()

        {

            UpdateLabelEvent ("Checking for updates...");

            Thread.Sleep (500);



            WebClient web_client = new WebClient ();

            Uri uri = new Uri ("http://www.sparkleshare.org/version");



            try {

                string latest_version = web_client.DownloadString (uri).Trim ();

            

                if (new Version (latest_version) > new Version (RunningVersion))

                    UpdateLabelEvent ("A newer version (" + latest_version + ") is available!");

                else

                    UpdateLabelEvent ("You are running the latest version.");



            } catch {

                UpdateLabelEvent ("Version check failed.");

            }

        }

    }

}