Synnefo » Pithos MS Client

#region

/* -----------------------------------------------------------------------

 * <copyright file="App.xaml.cs" company="GRNet">

 * 

 * Copyright 2011-2012 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

 * conditions are met:

 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 * </copyright>

 * -----------------------------------------------------------------------

 */

#endregion

using System;

using System.Collections.Generic;

using System.Configuration;

using System.Data;

using System.Diagnostics;

using System.Linq;

using System.Net;

using System.Net.Mail;

using System.Reflection;

using System.Text;

using System.Threading;

using System.Threading.Tasks;

using System.Windows;

using Caliburn.Micro;

using Microsoft.Win32;

using Caliburn.Micro.Logging;

using Pithos.Client.WPF.Properties;

namespace Pithos.Client.WPF

{

    /// <summary>

    /// Interaction logic for App.xaml

    /// </summary>

    public partial class App : Application

    {

        private readonly log4net.ILog _log = log4net.LogManager.GetLogger(typeof (App));

        public App()

        {

            log4net.Config.XmlConfigurator.Configure();            

            this.DispatcherUnhandledException += OnUnhandledException;

            AppDomain.CurrentDomain.UnhandledException += OnUnhandledException;

            TaskScheduler.UnobservedTaskException += OnUnobservedException;

            //Fix incorrect proxy settings by switching to default proxy, if the proxy server settings is empty

            if (Settings.Default.UseManualProxy && String.IsNullOrWhiteSpace(Settings.Default.ProxyServer))

            {

                Settings.Default.UseManualProxy = false;

                Settings.Default.UseDefaultProxy = true;

            }

            InitializeComponent();            

        }

        protected override void OnStartup(StartupEventArgs e)

        {

            if (!Settings.Default.StartOnSystemStartup && e.Args.Contains("startup"))

            {

                this.Shutdown();

                return;

            }

            //TODO: Possibly add a delay here?

            if (e.Args.Contains("startup"))

            {

                if (Settings.Default.StartupDelay>TimeSpan.Zero)

                    Thread.Sleep(Settings.Default.StartupDelay);

            }

            var splashScreen = new SplashScreen("images/logo.png");

            splashScreen.Show(true);

            base.OnStartup(e);

        }

        private void OnUnobservedException(object sender, UnobservedTaskExceptionEventArgs e)

        {            

            var messages=new List<UserMessage>();

            e.Exception.Handle(exc=>{

                messages.Add(new UserMessage

                {

                    Message = "Unexpected Exception",

                    Details = exc.ToString(),

                    Severity = Severity.Error

                });

                return true;

            });

            ShowMessages("Oops!","Where did that come from? \r\nErm, an exception occured.\r\nWe apologize for the inconvenience", messages);

            e.SetObserved();

        }

        private void OnUnhandledException(object sender, UnhandledExceptionEventArgs e)

        {

            var message = e.IsTerminating

                              ? "Unexpected Exception. The application must terminate"

                              : "Unexpected Exception";

            var messages = new[]{

                                   new UserMessage

                                       {

                                           Message = (e.ExceptionObject as Exception).Message,

                                           Details = e.ExceptionObject.ToString(),

                                           Severity = Severity.Error

                                       }

                               };

            ShowMessages("Oops!", message,messages);

        }

        void OnUnhandledException(object sender, System.Windows.Threading.DispatcherUnhandledExceptionEventArgs e)

        {                        

            var messages = new[]{

                                   new UserMessage

                                       {

                                           Message = e.Exception.Message, 

                                           Details = e.Exception.ToString(),

                                           Severity = Severity.Error

                                       }

                               };

            ShowMessages("Oops!", "Unexcpected Exception", messages);

            e.Handled=true;

        }

        void ShowMessages(string title,string message,IEnumerable<UserMessage> messages )

        {

            LogMessages(messages);

            Execute.OnUIThread(()=>{

                var messageView = new MessageView(messages);

                messageView.Title = title;

                messageView.Message = message;

                messageView.ShowDialog();

            });

        }

        private void LogMessages(IEnumerable<UserMessage> messages)

        {

            var logMessage = CreateMessage(messages);

            _log.Error(logMessage);

        }

        private static string CreateMessage(IEnumerable<UserMessage> messages)

        {

            var messageBuilder = messages.Aggregate(new StringBuilder("Unexpected Error\r\n"),

                                                    (builder, message) =>

                                                        {

                                                            builder.AppendFormat("\r\n[{0}] {1}\r\n{2}\r\n", message.Severity,

                                                                                 message.Message, message.Details);

                                                            return builder;

                                                        });

            var logMessage = messageBuilder.ToString();

            return logMessage;

        }

    }

}