Implemented Application Initialization Error and Handling.

12 files changed, 208 insertions, 27 deletions

diff --git a/Software/Graphics/Mobile/warning-red.png b/Software/Graphics/Mobile/warning-red.png
new file mode 100644
index 000000000..97e703bb3
--- /dev/null
+++ b/Software/Graphics/Mobile/warning-red.png
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.Common/Application/IPPCApplicationManager.cs b/Software/Visual_Studio/PPC/Tango.PPC.Common/Application/IPPCApplicationManager.cs
index 0feb551b1..003229e65 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.Common/Application/IPPCApplicationManager.cs
+++ b/Software/Visual_Studio/PPC/Tango.PPC.Common/Application/IPPCApplicationManager.cs
@@ -41,6 +41,11 @@ namespace Tango.PPC.Common.Application
         event EventHandler SetupRequired;
 
         /// <summary>
+        /// Occurs when the application has encountered an error when initializing.
+        /// </summary>
+        event EventHandler<Exception> ApplicationInitializationError;
+
+        /// <summary>
         /// Gets a value indicating whether the application is shutting down.
         /// </summary>
         bool IsShuttingDown { get; }
@@ -51,6 +56,11 @@ namespace Tango.PPC.Common.Application
         void ShutDown();
 
         /// <summary>
+        /// Restarts the application.
+        /// </summary>
+        void Restart();
+
+        /// <summary>
         /// Gets the application version.
         /// </summary>
         Version Version { get; }
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.Common/Navigation/NavigationView.cs b/Software/Visual_Studio/PPC/Tango.PPC.Common/Navigation/NavigationView.cs
index c86cf148b..eefb298f7 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.Common/Navigation/NavigationView.cs
+++ b/Software/Visual_Studio/PPC/Tango.PPC.Common/Navigation/NavigationView.cs
@@ -12,6 +12,7 @@ namespace Tango.PPC.Common.Navigation
     public enum NavigationView
     {
         LoadingView,
+        LoadingErrorView,
         LayoutView,
         LoginView,
         MachineSetupView,
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/Images/warning-red.png b/Software/Visual_Studio/PPC/Tango.PPC.UI/Images/warning-red.png
new file mode 100644
index 000000000..97e703bb3
--- /dev/null
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/Images/warning-red.png
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/PPCApplication/DefaultPPCApplicationManager.cs b/Software/Visual_Studio/PPC/Tango.PPC.UI/PPCApplication/DefaultPPCApplicationManager.cs
index 714b83dfa..4021d89ef 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.UI/PPCApplication/DefaultPPCApplicationManager.cs
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/PPCApplication/DefaultPPCApplicationManager.cs
@@ -23,6 +23,7 @@ using Tango.SQLExaminer;
 using System.Data.SqlClient;
 using Tango.BL.Builders;
 using Tango.PPC.Common.Threading;
+using System.Diagnostics;
 
 namespace Tango.PPC.UI.PPCApplication
 {
@@ -64,6 +65,11 @@ namespace Tango.PPC.UI.PPCApplication
         public event EventHandler ContentRendered;
 
         /// <summary>
+        /// Occurs when the application has encountered an error when initializing.
+        /// </summary>
+        public event EventHandler<Exception> ApplicationInitializationError;
+
+        /// <summary>
         /// Gets a value indicating whether the application is shutting down.
         /// </summary>
         public bool IsShuttingDown { get; private set; }
@@ -125,46 +131,72 @@ namespace Tango.PPC.UI.PPCApplication
         {
             PPCSettings settings = null;
 
+            bool initialized = false;
+
             await Task.Factory.StartNew(() =>
             {
-                LogManager.Log("Reading PPC settings...");
-                settings = SettingsManager.Default.GetOrCreate<PPCSettings>();
+                try
+                {
+                    LogManager.Log("Reading PPC settings...");
+                    settings = SettingsManager.Default.GetOrCreate<PPCSettings>();
 
-                LogManager.Log(settings.ToJsonString());
+                    LogManager.Log(settings.ToJsonString());
 
-                LogManager.Log("Reading Core settings...");
-                var coreSettings = SettingsManager.Default.GetOrCreate<CoreSettings>();
+                    LogManager.Log("Reading Core settings...");
+                    var coreSettings = SettingsManager.Default.GetOrCreate<CoreSettings>();
 
-                if (!SettingsManager.Default.IsFileExists())
-                {
-                    LogManager.Log("Settings file does not exists. creating...");
-                    settings.Save();
-                }
+                    if (!SettingsManager.Default.IsFileExists())
+                    {
+                        LogManager.Log("Settings file does not exists. creating...");
+                        settings.Save();
+                    }
 
-                if (App.StartupArgs.Contains("-update_ok"))
-                {
-                    LogManager.Log("Application started with '-update_ok' startup arguments. The application has been successfully updated.");
-                    settings.ApplicationState = ApplicationStates.Ready;
-                    settings.Save();
-                }
+                    if (App.StartupArgs.Contains("-update_ok"))
+                    {
+                        LogManager.Log("Application started with '-update_ok' startup arguments. The application has been successfully updated.");
+                        settings.ApplicationState = ApplicationStates.Ready;
+                        settings.Save();
+                    }
 
-                if (settings.ApplicationState == ApplicationStates.Ready)
+                    if (settings.ApplicationState == ApplicationStates.Ready)
+                    {
+                        LogManager.Log("Initializing ObservablesStaticCollections...");
+                        ObservablesStaticCollections.Instance.Initialize();
+                        LogManager.Log("Loading machine from database...");
+                        _machine = new MachineBuilder(ObservablesContext.CreateDefault()).SetFirst().WithOrganization().WithConfiguration().Build();
+                    }
+
+                    initialized = true;
+                }
+                catch (Exception ex)
                 {
-                    LogManager.Log("Loading machine from database...");
-                    ObservablesStaticCollections.Instance.Initialize();
-                    _machine = new MachineBuilder(ObservablesContext.CreateDefault()).SetFirst().WithOrganization().WithConfiguration().Build();
+                    LogManager.Log(ex, "Application Initialization Error!");
+                    ApplicationInitializationError?.Invoke(this, ex);
+                    return;
                 }
             });
 
 
-            if (settings.ApplicationState == ApplicationStates.PreSetup || settings.ApplicationState == ApplicationStates.SemiSetup)
+            if (initialized)
             {
-                LogManager.Log($"The application is in {settings.ApplicationState} state. database initialization skipped. Invoking setup required event!");
-                SetupRequired?.Invoke(this, new EventArgs());
-            }
-            else
-            {
-                PostDbInitialize();
+                try
+                {
+                    if (settings.ApplicationState == ApplicationStates.PreSetup || settings.ApplicationState == ApplicationStates.SemiSetup)
+                    {
+                        LogManager.Log($"The application is in {settings.ApplicationState} state. database initialization skipped. Invoking setup required event!");
+                        SetupRequired?.Invoke(this, new EventArgs());
+                    }
+                    else
+                    {
+                        PostDbInitialize();
+                    }
+                }
+                catch (Exception ex)
+                {
+                    LogManager.Log(ex, "Application Post Initialization Error!");
+                    ApplicationInitializationError?.Invoke(this, ex);
+                    return;
+                }
             }
         }
 
@@ -273,5 +305,14 @@ namespace Tango.PPC.UI.PPCApplication
                 vm.OnApplicationShuttingDown();
             }
         }
+
+        /// <summary>
+        /// Restarts the application.
+        /// </summary>
+        public void Restart()
+        {
+            Process.Start(Application.ResourceAssembly.Location);
+            Environment.Exit(0);
+        }
     }
 }
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/Tango.PPC.UI.csproj b/Software/Visual_Studio/PPC/Tango.PPC.UI/Tango.PPC.UI.csproj
index 2ff219906..e552d096b 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.UI/Tango.PPC.UI.csproj
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/Tango.PPC.UI.csproj
@@ -134,6 +134,7 @@
     <Compile Include="ViewModelLocator.cs" />
     <Compile Include="ViewModels\ExternalBridgeViewVM.cs" />
     <Compile Include="ViewModels\LayoutViewVM.cs" />
+    <Compile Include="ViewModels\LoadingErrorViewVM.cs" />
     <Compile Include="ViewModels\LoadingViewVM.cs" />
     <Compile Include="ViewModels\LoginViewVM.cs" />
     <Compile Include="ViewModels\MachineSetupViewVM.cs" />
@@ -148,6 +149,9 @@
     <Compile Include="Views\LayoutView.xaml.cs">
       <DependentUpon>LayoutView.xaml</DependentUpon>
     </Compile>
+    <Compile Include="Views\LoadingErrorView.xaml.cs">
+      <DependentUpon>LoadingErrorView.xaml</DependentUpon>
+    </Compile>
     <Compile Include="Views\LoadingView.xaml.cs">
       <DependentUpon>LoadingView.xaml</DependentUpon>
     </Compile>
@@ -203,6 +207,10 @@
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
     </Page>
+    <Page Include="Views\LoadingErrorView.xaml">
+      <SubType>Designer</SubType>
+      <Generator>MSBuild:Compile</Generator>
+    </Page>
     <Page Include="Views\LoadingView.xaml">
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
@@ -381,6 +389,7 @@
       <Link>Tango.ColorLib.dll</Link>
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Content>
+    <Resource Include="Images\warning-red.png" />
     <Resource Include="Images\update.png" />
     <Resource Include="Images\flash-drive.png" />
     <Resource Include="Images\right-arrow-64.png" />
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModelLocator.cs b/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModelLocator.cs
index 703a2f6ae..4bf83242f 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModelLocator.cs
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModelLocator.cs
@@ -88,6 +88,7 @@ namespace Tango.PPC.UI
             TangoIOC.Default.Register<ExternalBridgeViewVM>();
             TangoIOC.Default.Register<MachineSetupViewVM>();
             TangoIOC.Default.Register<MachineUpdateViewVM>();
+            TangoIOC.Default.Register<LoadingErrorViewVM>();
 
 
             TangoIOC.Default.GetInstance<IPPCApplicationManager>().ContentRendered += (_, __) =>
@@ -161,5 +162,13 @@ namespace Tango.PPC.UI
                 return TangoIOC.Default.GetInstance<MachineUpdateViewVM>();
             }
         }
+
+        public static LoadingErrorViewVM LoadingErrorViewVM
+        {
+            get
+            {
+                return TangoIOC.Default.GetInstance<LoadingErrorViewVM>();
+            }
+        }
     }
 }
\ No newline at end of file
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModels/LoadingErrorViewVM.cs b/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModels/LoadingErrorViewVM.cs
new file mode 100644
index 000000000..3c05e3690
--- /dev/null
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModels/LoadingErrorViewVM.cs
@@ -0,0 +1,43 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Tango.Core.Commands;
+using Tango.PPC.Common;
+using Tango.PPC.Common.Navigation;
+
+namespace Tango.PPC.UI.ViewModels
+{
+    public class LoadingErrorViewVM : PPCViewModel, INavigationObjectReceiver<Exception>
+    {
+        private String _error;
+        public String Error
+        {
+            get { return _error; }
+            set { _error = value; RaisePropertyChangedAuto(); }
+        }
+
+        public RelayCommand RestartCommand { get; set; }
+
+        public LoadingErrorViewVM()
+        {
+            RestartCommand = new RelayCommand(Restart);
+        }
+
+        public override void OnApplicationStarted()
+        {
+
+        }
+
+        public void OnNavigatedToWithObject(Exception ex)
+        {
+            Error = ex.Message;
+        }
+
+        private void Restart()
+        {
+            ApplicationManager.Restart();
+        }
+    }
+}
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModels/LoadingViewVM.cs b/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModels/LoadingViewVM.cs
index 486829103..5598362be 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModels/LoadingViewVM.cs
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModels/LoadingViewVM.cs
@@ -54,6 +54,17 @@ namespace Tango.PPC.UI.ViewModels
             {
                 Task.Delay(1000).ContinueWith((x) => { IsLoading = true; });
             }
+
+            applicationManager.ApplicationInitializationError += ApplicationManager_ApplicationInitializationError;
+        }
+
+        private void ApplicationManager_ApplicationInitializationError(object sender, Exception ex)
+        {
+            InvokeUI(() =>
+            {
+                NavigationManager.NavigateWithObject<Exception>(NavigationView.LoadingErrorView, ex);
+                IsLoading = false;
+            });
         }
 
         /// <summary>
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/LoadingErrorView.xaml b/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/LoadingErrorView.xaml
new file mode 100644
index 000000000..7682ba4ce
--- /dev/null
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/LoadingErrorView.xaml
@@ -0,0 +1,28 @@
+<UserControl x:Class="Tango.PPC.UI.Views.LoadingErrorView"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
+             xmlns:touch="clr-namespace:Tango.Touch.Controls;assembly=Tango.Touch"
+             xmlns:vm="clr-namespace:Tango.PPC.UI.ViewModels"
+             xmlns:global="clr-namespace:Tango.PPC.UI"
+             xmlns:local="clr-namespace:Tango.PPC.UI.Views"
+             mc:Ignorable="d" 
+             d:DesignHeight="1280" d:DesignWidth="800" d:DataContext="{d:DesignInstance Type=vm:LoadingErrorViewVM, IsDesignTimeCreatable=False}" DataContext="{x:Static global:ViewModelLocator.LoadingErrorViewVM}">
+    <Grid>
+        <DockPanel Margin="20 60 20 20">
+            <StackPanel DockPanel.Dock="Top">
+                <Image Source="../Images/warning-red.png" Width="300" Stretch="Uniform" HorizontalAlignment="Center"></Image>
+                <TextBlock HorizontalAlignment="Center" Margin="0 40 0 0" FontSize="{StaticResource TangoHeaderFontSize}">Application Loading Error</TextBlock>
+                <TextBlock HorizontalAlignment="Center" Margin="0 20 0 0" FontSize="{StaticResource TangoTitleFontSize}">The application has failed to load properly due to the following reason.</TextBlock>
+                <TextBlock HorizontalAlignment="Center" Foreground="{StaticResource TangoGrayTextBrush}" TextAlignment="Center" Margin="100 20 100 0" TextWrapping="Wrap" Text="{Binding Error}"></TextBlock>
+            </StackPanel>
+            
+            <Grid>
+                <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center" Width="320">
+                    <touch:TouchButton Command="{Binding RestartCommand}" Padding="0 30" CornerRadius="40">RESTART</touch:TouchButton>
+                </StackPanel>
+            </Grid>
+        </DockPanel>
+    </Grid>
+</UserControl>
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/LoadingErrorView.xaml.cs b/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/LoadingErrorView.xaml.cs
new file mode 100644
index 000000000..0713cc320
--- /dev/null
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/LoadingErrorView.xaml.cs
@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace Tango.PPC.UI.Views
+{
+    /// <summary>
+    /// Interaction logic for LoadingErrorView.xaml
+    /// </summary>
+    public partial class LoadingErrorView : UserControl
+    {
+        public LoadingErrorView()
+        {
+            InitializeComponent();
+        }
+    }
+}
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/MainView.xaml b/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/MainView.xaml
index 7eca6dba6..4ca7e39ec 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/MainView.xaml
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/MainView.xaml
@@ -77,6 +77,7 @@
 
             <controls:NavigationControl TransitionAlwaysFades="True" KeepElementsAttached="True" TransitionType="Zoom" x:Name="NavigationControl" x:FieldModifier="public">
                 <local:LoadingView></local:LoadingView>
+                <local:LoadingErrorView></local:LoadingErrorView>
                 <local:LoginView></local:LoginView>
                 <local:LayoutView></local:LayoutView>
                 <local:ExternalBridgeView></local:ExternalBridgeView>