From 70f9e00692589544418b9ce98cd3c926b77d85a5 Mon Sep 17 00:00:00 2001
From: Peter Stibitz <peter.stibitz@kabelmail.de>
Date: Sat, 28 Oct 2023 15:53:37 +0100
Subject: [PATCH 01/14] Assed Views Folder

---
 DB-Manager.csproj | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/DB-Manager.csproj b/DB-Manager.csproj
index 1a8369d..9ecf39f 100644
--- a/DB-Manager.csproj
+++ b/DB-Manager.csproj
@@ -61,4 +61,8 @@
 		</PackageReference>
 	</ItemGroup>
 
+	<ItemGroup>
+	  <Folder Include="Views\" />
+	</ItemGroup>
+
 </Project>

From cb3289a30786e98db8e8b791f737728643ec5bb1 Mon Sep 17 00:00:00 2001
From: Peter Stibitz <peter.stibitz@kabelmail.de>
Date: Sat, 28 Oct 2023 18:35:55 +0100
Subject: [PATCH 02/14] added new ContentPage Request Specialists

---
 AppShell.xaml                    | 15 +++++++++++----
 DB-Manager.csproj                |  5 ++++-
 Views/RequestSpecialists.xaml    | 11 +++++++++++
 Views/RequestSpecialists.xaml.cs |  9 +++++++++
 4 files changed, 35 insertions(+), 5 deletions(-)
 create mode 100644 Views/RequestSpecialists.xaml
 create mode 100644 Views/RequestSpecialists.xaml.cs

diff --git a/AppShell.xaml b/AppShell.xaml
index b1bb675..bb1210e 100644
--- a/AppShell.xaml
+++ b/AppShell.xaml
@@ -4,11 +4,18 @@
     xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
     xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
     xmlns:local="clr-namespace:MauiApp1"
+    xmlns:views="clr-namespace:MauiApp1.Views"
     Shell.FlyoutBehavior="Disabled">
 
-    <ShellContent
-        Title="Home"
-        ContentTemplate="{DataTemplate local:MainPage}"
-        Route="MainPage" />
+    <TabBar>
+        <ShellContent
+            Title="Home"
+            ContentTemplate="{DataTemplate local:MainPage}"
+            Route="MainPage" />
 
+        <ShellContent
+            Title="Request Specialists"
+            ContentTemplate="{DataTemplate views:RequestSpecialists}" />
+    </TabBar>
+    
 </Shell>
diff --git a/DB-Manager.csproj b/DB-Manager.csproj
index 9ecf39f..1821f9a 100644
--- a/DB-Manager.csproj
+++ b/DB-Manager.csproj
@@ -28,6 +28,7 @@
 		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'windows'">10.0.17763.0</SupportedOSPlatformVersion>
 		<TargetPlatformMinVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'windows'">10.0.17763.0</TargetPlatformMinVersion>
 		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'tizen'">6.5</SupportedOSPlatformVersion>
+		<DefaultLanguage>en</DefaultLanguage>
 	</PropertyGroup>
 
 	<PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|net7.0-ios|AnyCPU'">
@@ -62,7 +63,9 @@
 	</ItemGroup>
 
 	<ItemGroup>
-	  <Folder Include="Views\" />
+	  <MauiXaml Update="Views\RequestSpecialists.xaml">
+	    <Generator>MSBuild:Compile</Generator>
+	  </MauiXaml>
 	</ItemGroup>
 
 </Project>
diff --git a/Views/RequestSpecialists.xaml b/Views/RequestSpecialists.xaml
new file mode 100644
index 0000000..f87721a
--- /dev/null
+++ b/Views/RequestSpecialists.xaml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentView xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="MauiApp1.Views.RequestSpecialists">
+    <VerticalStackLayout>
+        <Label 
+            Text="Welcome to .NET MAUI!"
+            VerticalOptions="Center" 
+            HorizontalOptions="Center" />
+    </VerticalStackLayout>
+</ContentView>
diff --git a/Views/RequestSpecialists.xaml.cs b/Views/RequestSpecialists.xaml.cs
new file mode 100644
index 0000000..93faf7d
--- /dev/null
+++ b/Views/RequestSpecialists.xaml.cs
@@ -0,0 +1,9 @@
+namespace MauiApp1.Views;
+
+public partial class RequestSpecialists : ContentView
+{
+	public RequestSpecialists()
+	{
+		InitializeComponent();
+	}
+}
\ No newline at end of file

From 71d1e83f1d717ddbf27b51ef1d3e706cfadca8cc Mon Sep 17 00:00:00 2001
From: Peter Stibitz <peter.stibitz@kabelmail.de>
Date: Sun, 29 Oct 2023 01:27:46 +0100
Subject: [PATCH 03/14] new tables for skills_request

---
 DatabaseInitialiser.cs        | 12 +++++++++---
 Views/RequestSpecialists.xaml | 11 +++++------
 2 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/DatabaseInitialiser.cs b/DatabaseInitialiser.cs
index cceb894..1175228 100644
--- a/DatabaseInitialiser.cs
+++ b/DatabaseInitialiser.cs
@@ -85,7 +85,9 @@ private static List<string> GetTableCreationCommands()
             "CREATE TABLE IF NOT EXISTS rota_type (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
             "CREATE TABLE IF NOT EXISTS equipment_type (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
             "CREATE TABLE IF NOT EXISTS organisation_type (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
-            "CREATE TABLE IF NOT EXISTS order_status (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
+			"CREATE TABLE IF NOT EXISTS organisation (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
+			"CREATE TABLE IF NOT EXISTS person (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL, FieldName TEXT NOT NULL)",
+			"CREATE TABLE IF NOT EXISTS order_status (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
             "CREATE TABLE IF NOT EXISTS resource_types (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
             "CREATE TABLE IF NOT EXISTS room_type (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
             "CREATE TABLE IF NOT EXISTS room_use_type (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
@@ -100,7 +102,11 @@ private static List<string> GetTableCreationCommands()
             "CREATE TABLE IF NOT EXISTS role (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
             "CREATE TABLE IF NOT EXISTS skill (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
             "CREATE TABLE IF NOT EXISTS team_member (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
-            "CREATE TABLE IF NOT EXISTS partner_agencies (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)"
-        };
+            "CREATE TABLE IF NOT EXISTS partner_agencies (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
+			"CREATE TABLE IF NOT EXISTS skills_request (Id INTEGER PRIMARY KEY AUTOINCREMENT, skill_name TEXT NOT NULL, " +
+            "organisation_id INTEGER, request_date DATE, requested_by INTEGER, number_required INTEGER, start_date DATE, end_date DATE, " +
+            "status TEXT, confirmed_date DATE, FOREIGN KEY (skill_name) REFERENCES skill(Name), " +
+            "FOREIGN KEY (organisation_id) REFERENCES organisation(id),FOREIGN KEY (requested_by) REFERENCES person(id));"
+		};
     }
 }
diff --git a/Views/RequestSpecialists.xaml b/Views/RequestSpecialists.xaml
index f87721a..1e100b9 100644
--- a/Views/RequestSpecialists.xaml
+++ b/Views/RequestSpecialists.xaml
@@ -2,10 +2,9 @@
 <ContentView xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              x:Class="MauiApp1.Views.RequestSpecialists">
-    <VerticalStackLayout>
-        <Label 
-            Text="Welcome to .NET MAUI!"
-            VerticalOptions="Center" 
-            HorizontalOptions="Center" />
-    </VerticalStackLayout>
+    <ScrollView>
+        <Frame>
+            
+        </Frame>
+    </ScrollView>
 </ContentView>

From 4af66046aad46965d61de0d93e011fa6c0d595ab Mon Sep 17 00:00:00 2001
From: Peter Stibitz <peter.stibitz@kabelmail.de>
Date: Sun, 29 Oct 2023 01:19:51 +0000
Subject: [PATCH 04/14] fixed RequestSpecialists

---
 AppShell.xaml                     |  2 +-
 DB-Manager.csproj                 |  2 +-
 Views/RequestSpecialists.xaml     | 10 ----------
 Views/RequestSpecialists.xaml.cs  |  9 ---------
 Views/RequestSpecialities.xaml    | 12 ++++++++++++
 Views/RequestSpecialities.xaml.cs |  9 +++++++++
 6 files changed, 23 insertions(+), 21 deletions(-)
 delete mode 100644 Views/RequestSpecialists.xaml
 delete mode 100644 Views/RequestSpecialists.xaml.cs
 create mode 100644 Views/RequestSpecialities.xaml
 create mode 100644 Views/RequestSpecialities.xaml.cs

diff --git a/AppShell.xaml b/AppShell.xaml
index bb1210e..4d09ede 100644
--- a/AppShell.xaml
+++ b/AppShell.xaml
@@ -15,7 +15,7 @@
 
         <ShellContent
             Title="Request Specialists"
-            ContentTemplate="{DataTemplate views:RequestSpecialists}" />
+            ContentTemplate="{DataTemplate views:RequestSpecialities}" />
     </TabBar>
     
 </Shell>
diff --git a/DB-Manager.csproj b/DB-Manager.csproj
index 1821f9a..3cf8a9a 100644
--- a/DB-Manager.csproj
+++ b/DB-Manager.csproj
@@ -63,7 +63,7 @@
 	</ItemGroup>
 
 	<ItemGroup>
-	  <MauiXaml Update="Views\RequestSpecialists.xaml">
+	  <MauiXaml Update="Views\RequestSpecialities.xaml">
 	    <Generator>MSBuild:Compile</Generator>
 	  </MauiXaml>
 	</ItemGroup>
diff --git a/Views/RequestSpecialists.xaml b/Views/RequestSpecialists.xaml
deleted file mode 100644
index 1e100b9..0000000
--- a/Views/RequestSpecialists.xaml
+++ /dev/null
@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<ContentView xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
-             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
-             x:Class="MauiApp1.Views.RequestSpecialists">
-    <ScrollView>
-        <Frame>
-            
-        </Frame>
-    </ScrollView>
-</ContentView>
diff --git a/Views/RequestSpecialists.xaml.cs b/Views/RequestSpecialists.xaml.cs
deleted file mode 100644
index 93faf7d..0000000
--- a/Views/RequestSpecialists.xaml.cs
+++ /dev/null
@@ -1,9 +0,0 @@
-namespace MauiApp1.Views;
-
-public partial class RequestSpecialists : ContentView
-{
-	public RequestSpecialists()
-	{
-		InitializeComponent();
-	}
-}
\ No newline at end of file
diff --git a/Views/RequestSpecialities.xaml b/Views/RequestSpecialities.xaml
new file mode 100644
index 0000000..c265be6
--- /dev/null
+++ b/Views/RequestSpecialities.xaml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="MauiApp1.Views.RequestSpecialities"
+             Title="RequestSpecialities">
+    <VerticalStackLayout>
+        <Label 
+            Text="Welcome to .NET MAUI!"
+            VerticalOptions="Center" 
+            HorizontalOptions="Center" />
+    </VerticalStackLayout>
+</ContentPage>
\ No newline at end of file
diff --git a/Views/RequestSpecialities.xaml.cs b/Views/RequestSpecialities.xaml.cs
new file mode 100644
index 0000000..c451419
--- /dev/null
+++ b/Views/RequestSpecialities.xaml.cs
@@ -0,0 +1,9 @@
+namespace MauiApp1.Views;
+
+public partial class RequestSpecialities : ContentPage
+{
+	public RequestSpecialities()
+	{
+		InitializeComponent();
+	}
+}
\ No newline at end of file

From dd4c8b145af23619f88542646551cf54527ee4b2 Mon Sep 17 00:00:00 2001
From: Peter Stibitz <peter.stibitz@kabelmail.de>
Date: Sun, 29 Oct 2023 02:07:59 +0000
Subject: [PATCH 05/14] Added UI for request SpecialistsService to enter new
 Requests

---
 AppShell.xaml                         |  2 +-
 DB-Manager.csproj                     |  8 ++++++-
 Services/RequestSpecialistsService.cs | 32 +++++++++++++++++++++++++++
 Views/RequestSpecialists.xaml         | 24 ++++++++++++++++++++
 Views/RequestSpecialists.xaml.cs      | 27 ++++++++++++++++++++++
 Views/RequestSpecialities.xaml        | 12 ----------
 Views/RequestSpecialities.xaml.cs     |  9 --------
 7 files changed, 91 insertions(+), 23 deletions(-)
 create mode 100644 Services/RequestSpecialistsService.cs
 create mode 100644 Views/RequestSpecialists.xaml
 create mode 100644 Views/RequestSpecialists.xaml.cs
 delete mode 100644 Views/RequestSpecialities.xaml
 delete mode 100644 Views/RequestSpecialities.xaml.cs

diff --git a/AppShell.xaml b/AppShell.xaml
index 4d09ede..bb1210e 100644
--- a/AppShell.xaml
+++ b/AppShell.xaml
@@ -15,7 +15,7 @@
 
         <ShellContent
             Title="Request Specialists"
-            ContentTemplate="{DataTemplate views:RequestSpecialities}" />
+            ContentTemplate="{DataTemplate views:RequestSpecialists}" />
     </TabBar>
     
 </Shell>
diff --git a/DB-Manager.csproj b/DB-Manager.csproj
index 3cf8a9a..b85e7d5 100644
--- a/DB-Manager.csproj
+++ b/DB-Manager.csproj
@@ -63,7 +63,13 @@
 	</ItemGroup>
 
 	<ItemGroup>
-	  <MauiXaml Update="Views\RequestSpecialities.xaml">
+	  <Compile Update="Views\RequestSpecialists.xaml.cs">
+	    <DependentUpon>RequestSpecialists.xaml</DependentUpon>
+	  </Compile>
+	</ItemGroup>
+
+	<ItemGroup>
+	  <MauiXaml Update="Views\RequestSpecialists.xaml">
 	    <Generator>MSBuild:Compile</Generator>
 	  </MauiXaml>
 	</ItemGroup>
diff --git a/Services/RequestSpecialistsService.cs b/Services/RequestSpecialistsService.cs
new file mode 100644
index 0000000..bf52e8b
--- /dev/null
+++ b/Services/RequestSpecialistsService.cs
@@ -0,0 +1,32 @@
+using Microsoft.Data.Sqlite;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MauiApp1.Services
+{
+	internal class RequestSpecialistsService
+	{
+		private readonly SqliteConnection _connection;
+
+		/// <summary>
+		/// Creates a new database operation instance, initializing the connection to the SQLite database.
+		/// </summary>
+		/// <param name="connectionString">The SQLite database connection string.</param>
+		public RequestSpecialistsService(string connectionString)
+		{
+			_connection = new SqliteConnection(connectionString);
+
+			try
+			{
+				_connection.Open();
+			}
+			catch (Exception ex)
+			{
+				throw new Exception("Error establishing database connection.", ex);
+			}
+		}
+	}
+}
diff --git a/Views/RequestSpecialists.xaml b/Views/RequestSpecialists.xaml
new file mode 100644
index 0000000..6173458
--- /dev/null
+++ b/Views/RequestSpecialists.xaml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             xmlns:sys="clr-namespace:System;assembly=netstandard"
+             x:Class="MauiApp1.Views.RequestSpecialists"
+             Title="RequestSpecialists">
+
+    <ScrollView>
+        <VerticalStackLayout Spacing="30" Padding="30,20" VerticalOptions="Center">
+
+            <!-- Title -->
+            <Label Text="Request Specialists" FontSize="26" FontAttributes="Bold" HorizontalOptions="CenterAndExpand" TextColor="White" />
+
+            <Entry Placeholder="Skill Name" x:Name="SkillNameEntry" />
+            <Entry Placeholder="Organisation ID" x:Name="OrganisationIdEntry" Keyboard="Numeric" />
+            <Entry Placeholder="Requested By" x:Name="RequestedByEntry" Keyboard="Numeric" />
+            <Entry Placeholder="Number Required" x:Name="NumberRequiredEntry" Keyboard="Numeric" />
+            <DatePicker x:Name="StartDatePicker" MinimumDate="{x:Static sys:DateTime.Today}"/>
+            <DatePicker x:Name="EndDatePicker" MinimumDate="{x:Static sys:DateTime.Today}"/>
+            <Button Text="Add Record" Clicked="OnAddRecordClicked" />
+
+        </VerticalStackLayout>
+    </ScrollView>
+</ContentPage>
\ No newline at end of file
diff --git a/Views/RequestSpecialists.xaml.cs b/Views/RequestSpecialists.xaml.cs
new file mode 100644
index 0000000..a9c8543
--- /dev/null
+++ b/Views/RequestSpecialists.xaml.cs
@@ -0,0 +1,27 @@
+namespace MauiApp1.Views;
+
+public partial class RequestSpecialists : ContentPage
+{
+	public RequestSpecialists()
+	{
+		InitializeComponent();
+	}
+
+	private void OnAddRecordClicked(object sender, EventArgs e)
+	{
+		// Retrieve values from the Entry and DatePicker controls
+		var skillName = SkillNameEntry.Text;
+		var organisationId = Convert.ToInt32(OrganisationIdEntry.Text);
+		var requestDate = DateTime.Today;
+		var requestedBy = Convert.ToInt32(RequestedByEntry.Text);
+		var numberRequired = Convert.ToInt32(NumberRequiredEntry.Text);
+		var startDate = StartDatePicker.Date;
+		var endDate = EndDatePicker.Date;
+
+		try
+		{
+			
+		}
+	}
+
+}
\ No newline at end of file
diff --git a/Views/RequestSpecialities.xaml b/Views/RequestSpecialities.xaml
deleted file mode 100644
index c265be6..0000000
--- a/Views/RequestSpecialities.xaml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
-             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
-             x:Class="MauiApp1.Views.RequestSpecialities"
-             Title="RequestSpecialities">
-    <VerticalStackLayout>
-        <Label 
-            Text="Welcome to .NET MAUI!"
-            VerticalOptions="Center" 
-            HorizontalOptions="Center" />
-    </VerticalStackLayout>
-</ContentPage>
\ No newline at end of file
diff --git a/Views/RequestSpecialities.xaml.cs b/Views/RequestSpecialities.xaml.cs
deleted file mode 100644
index c451419..0000000
--- a/Views/RequestSpecialities.xaml.cs
+++ /dev/null
@@ -1,9 +0,0 @@
-namespace MauiApp1.Views;
-
-public partial class RequestSpecialities : ContentPage
-{
-	public RequestSpecialities()
-	{
-		InitializeComponent();
-	}
-}
\ No newline at end of file

From e220b2f9b8f55743ed7a008452a87cc6165fc153 Mon Sep 17 00:00:00 2001
From: Peter Stibitz <peter.stibitz@kabelmail.de>
Date: Sun, 29 Oct 2023 14:16:44 +0000
Subject: [PATCH 06/14] Added Model SkillRequest, Interfaceand revised the UI a
 bit

---
 Models/SkillRequest.cs                | 22 +++++++++++
 Services/ISpecialistRequestService.cs | 17 ++++++++
 Services/RequestSpecialistsService.cs | 32 ---------------
 Services/SpecialistRequestService.cs  | 57 +++++++++++++++++++++++++++
 Views/RequestSpecialists.xaml         | 46 +++++++++++++++++----
 Views/RequestSpecialists.xaml.cs      | 13 +++---
 6 files changed, 142 insertions(+), 45 deletions(-)
 create mode 100644 Models/SkillRequest.cs
 create mode 100644 Services/ISpecialistRequestService.cs
 delete mode 100644 Services/RequestSpecialistsService.cs
 create mode 100644 Services/SpecialistRequestService.cs

diff --git a/Models/SkillRequest.cs b/Models/SkillRequest.cs
new file mode 100644
index 0000000..31c262f
--- /dev/null
+++ b/Models/SkillRequest.cs
@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MauiApp1.Models
+{
+	public class SkillRequest
+	{
+		public int Id { get; set; }
+		public string SkillName { get; set; }
+		public int OrganisationId { get; set; }
+		public DateTime RequestDate { get; set; }
+		public int RequestedBy { get; set; }
+		public int NumberRequired { get; set; }
+		public DateTime StartDate { get; set; }
+		public DateTime EndDate { get; set; }
+		public string Status { get; set; }
+		public DateTime ConfirmedDate { get; set; }
+	}
+}
diff --git a/Services/ISpecialistRequestService.cs b/Services/ISpecialistRequestService.cs
new file mode 100644
index 0000000..929f7c7
--- /dev/null
+++ b/Services/ISpecialistRequestService.cs
@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MauiApp1.Services
+{
+	internal interface ISpecialistRequestService
+	{
+		void AddSkillsRequest(SkillRequest request);
+		List<SkillRequest> GetAllSkillsRequests();
+		SkillRequest GetSkillsRequestById(int id);
+		void UpdateSkillsRequest(int id, SkillRequest updatedRequest);
+		void DeleteSkillsRequest(int id);
+	}
+}
diff --git a/Services/RequestSpecialistsService.cs b/Services/RequestSpecialistsService.cs
deleted file mode 100644
index bf52e8b..0000000
--- a/Services/RequestSpecialistsService.cs
+++ /dev/null
@@ -1,32 +0,0 @@
-using Microsoft.Data.Sqlite;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace MauiApp1.Services
-{
-	internal class RequestSpecialistsService
-	{
-		private readonly SqliteConnection _connection;
-
-		/// <summary>
-		/// Creates a new database operation instance, initializing the connection to the SQLite database.
-		/// </summary>
-		/// <param name="connectionString">The SQLite database connection string.</param>
-		public RequestSpecialistsService(string connectionString)
-		{
-			_connection = new SqliteConnection(connectionString);
-
-			try
-			{
-				_connection.Open();
-			}
-			catch (Exception ex)
-			{
-				throw new Exception("Error establishing database connection.", ex);
-			}
-		}
-	}
-}
diff --git a/Services/SpecialistRequestService.cs b/Services/SpecialistRequestService.cs
new file mode 100644
index 0000000..1b8895c
--- /dev/null
+++ b/Services/SpecialistRequestService.cs
@@ -0,0 +1,57 @@
+using Microsoft.Data.Sqlite;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MauiApp1.Services
+{
+	internal class SpecialistRequestService : ISpecialistRequestService
+	{
+		private readonly SqliteConnection _connection;
+
+		/// <summary>
+		/// Creates a new database operation instance, initializing the connection to the SQLite database.
+		/// </summary>
+		/// <param name="connectionString">The SQLite database connection string.</param>
+		public SpecialistRequestService(string connectionString)
+		{
+			_connection = new SqliteConnection(connectionString);
+
+			try
+			{
+				_connection.Open();
+			}
+			catch (Exception ex)
+			{
+				throw new Exception("Error establishing database connection.", ex);
+			}
+		}
+
+		void ISpecialistRequestService.AddSkillsRequest(SkillRequest request)
+		{
+			throw new NotImplementedException();
+		}
+
+		void ISpecialistRequestService.DeleteSkillsRequest(int id)
+		{
+			throw new NotImplementedException();
+		}
+
+		List<SkillRequest> ISpecialistRequestService.GetAllSkillsRequests()
+		{
+			throw new NotImplementedException();
+		}
+
+		SkillRequest ISpecialistRequestService.GetSkillsRequestById(int id)
+		{
+			throw new NotImplementedException();
+		}
+
+		void ISpecialistRequestService.UpdateSkillsRequest(int id, SkillRequest updatedRequest)
+		{
+			throw new NotImplementedException();
+		}
+	}
+}
diff --git a/Views/RequestSpecialists.xaml b/Views/RequestSpecialists.xaml
index 6173458..2958956 100644
--- a/Views/RequestSpecialists.xaml
+++ b/Views/RequestSpecialists.xaml
@@ -10,15 +10,47 @@
 
             <!-- Title -->
             <Label Text="Request Specialists" FontSize="26" FontAttributes="Bold" HorizontalOptions="CenterAndExpand" TextColor="White" />
+            <Frame CornerRadius="10" Padding="20" BackgroundColor="#373737">
+                <VerticalStackLayout Spacing="15">
+                    
+                    <Label Text="Select required skill:" FontSize="20" FontAttributes="Bold" TextColor="White" />
+                    <Picker x:Name="SkillNamePicker" TextColor="White" BackgroundColor="#454545" />
 
-            <Entry Placeholder="Skill Name" x:Name="SkillNameEntry" />
-            <Entry Placeholder="Organisation ID" x:Name="OrganisationIdEntry" Keyboard="Numeric" />
-            <Entry Placeholder="Requested By" x:Name="RequestedByEntry" Keyboard="Numeric" />
-            <Entry Placeholder="Number Required" x:Name="NumberRequiredEntry" Keyboard="Numeric" />
-            <DatePicker x:Name="StartDatePicker" MinimumDate="{x:Static sys:DateTime.Today}"/>
-            <DatePicker x:Name="EndDatePicker" MinimumDate="{x:Static sys:DateTime.Today}"/>
-            <Button Text="Add Record" Clicked="OnAddRecordClicked" />
+                    <Entry Placeholder="Organisation ID" x:Name="OrganisationIdEntry" Keyboard="Numeric" 
+                           TextColor="White" 
+                           PlaceholderColor="#aaa" 
+                           BackgroundColor="#454545" />
+                    <Entry Placeholder="Number Required" x:Name="NumberRequiredEntry" Keyboard="Numeric" 
+                           TextColor="White" 
+                           PlaceholderColor="#aaa" 
+                           BackgroundColor="#454545" />
+                    <DatePicker x:Name="StartDatePicker" MinimumDate="{x:Static sys:DateTime.Today}"
+                                TextColor="White" 
+                                BackgroundColor="#454545" />
+                    <DatePicker x:Name="EndDatePicker" MinimumDate="{x:Static sys:DateTime.Today}"
+                                TextColor="White" 
+                                BackgroundColor="#454545" />
+                    
+                    <Button Text="Add Record" Clicked="OnAddRecordClicked" 
+                            BackgroundColor="#4CAF50" 
+                            TextColor="White" 
+                            CornerRadius="8" />
+                </VerticalStackLayout>
+            </Frame>
 
+            <ListView x:Name="RequestSpecialistsListView">
+                <ListView.ItemTemplate>
+                    <DataTemplate>
+                        <ViewCell>
+                            <StackLayout Orientation="Horizontal" Padding="10">
+                                <CheckBox IsEnabled="False" IsChecked="{Binding IsApproved}" />
+                                <Label Text="{Binding Name}" VerticalOptions="CenterAndExpand" />
+                            </StackLayout>
+                        </ViewCell>
+                    </DataTemplate>
+                </ListView.ItemTemplate>
+            </ListView>
         </VerticalStackLayout>
+        
     </ScrollView>
 </ContentPage>
\ No newline at end of file
diff --git a/Views/RequestSpecialists.xaml.cs b/Views/RequestSpecialists.xaml.cs
index a9c8543..3c3c39a 100644
--- a/Views/RequestSpecialists.xaml.cs
+++ b/Views/RequestSpecialists.xaml.cs
@@ -10,18 +10,19 @@ public RequestSpecialists()
 	private void OnAddRecordClicked(object sender, EventArgs e)
 	{
 		// Retrieve values from the Entry and DatePicker controls
-		var skillName = SkillNameEntry.Text;
+		var skillName = SkillNamePicker.Title;
 		var organisationId = Convert.ToInt32(OrganisationIdEntry.Text);
 		var requestDate = DateTime.Today;
-		var requestedBy = Convert.ToInt32(RequestedByEntry.Text);
+		var requestedBy = 0;
 		var numberRequired = Convert.ToInt32(NumberRequiredEntry.Text);
 		var startDate = StartDatePicker.Date;
 		var endDate = EndDatePicker.Date;
+	}
 
-		try
-		{
-			
-		}
+	private void OnCheckBoxCheckedChanged()
+	{
+		// Handle checkbox checked changed event here
+		// You can access the checked state using e.Value
 	}
 
 }
\ No newline at end of file

From 5119498637127f97f15d2d711bbde9782f31b4c1 Mon Sep 17 00:00:00 2001
From: Peter Stibitz <peter.stibitz@kabelmail.de>
Date: Sun, 29 Oct 2023 14:22:05 +0000
Subject: [PATCH 07/14] added namespace Models to services

---
 Services/ISpecialistRequestService.cs | 1 +
 Services/SpecialistRequestService.cs  | 1 +
 2 files changed, 2 insertions(+)

diff --git a/Services/ISpecialistRequestService.cs b/Services/ISpecialistRequestService.cs
index 929f7c7..bad9578 100644
--- a/Services/ISpecialistRequestService.cs
+++ b/Services/ISpecialistRequestService.cs
@@ -3,6 +3,7 @@
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using MauiApp1.Models;
 
 namespace MauiApp1.Services
 {
diff --git a/Services/SpecialistRequestService.cs b/Services/SpecialistRequestService.cs
index 1b8895c..abdaf31 100644
--- a/Services/SpecialistRequestService.cs
+++ b/Services/SpecialistRequestService.cs
@@ -4,6 +4,7 @@
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using MauiApp1.Models;
 
 namespace MauiApp1.Services
 {

From ceed2c6c545abafdda002f98d897905ddd801c1a Mon Sep 17 00:00:00 2001
From: Peter Stibitz <peter.stibitz@kabelmail.de>
Date: Sun, 29 Oct 2023 16:34:24 +0000
Subject: [PATCH 08/14] Added AddSkillRequest to SpecialistRequestService

---
 DatabaseInitialiser.cs                |  5 ++--
 Services/ISpecialistRequestService.cs | 11 +++++----
 Services/SpecialistRequestService.cs  | 34 ++++++++++++++++++++++-----
 Views/RequestSpecialists.xaml.cs      | 32 +++++++++++++++++++++++++
 4 files changed, 69 insertions(+), 13 deletions(-)

diff --git a/DatabaseInitialiser.cs b/DatabaseInitialiser.cs
index 1175228..a1c700f 100644
--- a/DatabaseInitialiser.cs
+++ b/DatabaseInitialiser.cs
@@ -104,8 +104,9 @@ private static List<string> GetTableCreationCommands()
             "CREATE TABLE IF NOT EXISTS team_member (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
             "CREATE TABLE IF NOT EXISTS partner_agencies (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
 			"CREATE TABLE IF NOT EXISTS skills_request (Id INTEGER PRIMARY KEY AUTOINCREMENT, skill_name TEXT NOT NULL, " +
-            "organisation_id INTEGER, request_date DATE, requested_by INTEGER, number_required INTEGER, start_date DATE, end_date DATE, " +
-            "status TEXT, confirmed_date DATE, FOREIGN KEY (skill_name) REFERENCES skill(Name), " +
+			"organisation_id INTEGER, request_date DATE NOT NULL, requested_by INTEGER, number_required INTEGER NOT NULL, " +
+			"start_date DATE NOT NULL, end_date DATE NOT NULL, status TEXT CHECK (status IN ('Pending', 'Approved'))," +
+            " confirmed_date DATE, FOREIGN KEY (skill_name) REFERENCES skill(Name), " +
             "FOREIGN KEY (organisation_id) REFERENCES organisation(id),FOREIGN KEY (requested_by) REFERENCES person(id));"
 		};
     }
diff --git a/Services/ISpecialistRequestService.cs b/Services/ISpecialistRequestService.cs
index bad9578..c1c5b82 100644
--- a/Services/ISpecialistRequestService.cs
+++ b/Services/ISpecialistRequestService.cs
@@ -9,10 +9,11 @@ namespace MauiApp1.Services
 {
 	internal interface ISpecialistRequestService
 	{
-		void AddSkillsRequest(SkillRequest request);
-		List<SkillRequest> GetAllSkillsRequests();
-		SkillRequest GetSkillsRequestById(int id);
-		void UpdateSkillsRequest(int id, SkillRequest updatedRequest);
-		void DeleteSkillsRequest(int id);
+		void AddSkillRequest(string skillName, int numberRequired, 
+			DateTime startDate,DateTime endDate, string status);
+		List<SkillRequest> GetAllSkillRequests();
+		SkillRequest GetSkillRequestById(int id);
+		void UpdateSkillRequest(int id, SkillRequest updatedRequest);
+		void DeleteSkillRequest(int id);
 	}
 }
diff --git a/Services/SpecialistRequestService.cs b/Services/SpecialistRequestService.cs
index abdaf31..9c37968 100644
--- a/Services/SpecialistRequestService.cs
+++ b/Services/SpecialistRequestService.cs
@@ -30,29 +30,51 @@ public SpecialistRequestService(string connectionString)
 			}
 		}
 
-		void ISpecialistRequestService.AddSkillsRequest(SkillRequest request)
+		void ISpecialistRequestService.AddSkillRequest(string skillName, int numberRequired,
+			DateTime startDate, DateTime endDate, string status)
 		{
-			throw new NotImplementedException();
+			var commandText = @"INSERT INTO skills_request (skill_name, organisation_id, request_date, requested_by, number_required, start_date, end_date, status, confirmed_date) 
+                               VALUES (@skill_name, @organisation_id, @request_date, @requested_by, @number_required, @start_date, @end_date, @status, @confirmed_date)";
+
+			using (var command = new SqliteCommand(commandText, _connection))
+			{
+				command.Parameters.AddWithValue("@skill_name", skillName);
+				command.Parameters.AddWithValue("@organisation_id", null);
+				command.Parameters.AddWithValue("@request_date", DateTime.Today);
+				command.Parameters.AddWithValue("@requested_by", null); // specific Persons and users not implemented yet 
+				command.Parameters.AddWithValue("@number_required", numberRequired);
+				command.Parameters.AddWithValue("@start_date", startDate);
+				command.Parameters.AddWithValue("@end_date", endDate);
+				command.Parameters.AddWithValue("@status", "Pending");
+				command.Parameters.AddWithValue("@confirmed_date", null);
+
+				command.ExecuteNonQuery();
+			}
 		}
 
-		void ISpecialistRequestService.DeleteSkillsRequest(int id)
+		void ISpecialistRequestService.DeleteSkillRequest(int id)
 		{
 			throw new NotImplementedException();
 		}
 
-		List<SkillRequest> ISpecialistRequestService.GetAllSkillsRequests()
+		List<SkillRequest> ISpecialistRequestService.GetAllSkillRequests()
 		{
 			throw new NotImplementedException();
 		}
 
-		SkillRequest ISpecialistRequestService.GetSkillsRequestById(int id)
+		SkillRequest ISpecialistRequestService.GetSkillRequestById(int id)
 		{
 			throw new NotImplementedException();
 		}
 
-		void ISpecialistRequestService.UpdateSkillsRequest(int id, SkillRequest updatedRequest)
+		void ISpecialistRequestService.UpdateSkillRequest(int id, SkillRequest updatedRequest)
 		{
 			throw new NotImplementedException();
 		}
+
+		void approveSkillRequest(int id, int organisationId) 
+		{ 
+			throw new NotImplementedException();
+		}
 	}
 }
diff --git a/Views/RequestSpecialists.xaml.cs b/Views/RequestSpecialists.xaml.cs
index 3c3c39a..271904b 100644
--- a/Views/RequestSpecialists.xaml.cs
+++ b/Views/RequestSpecialists.xaml.cs
@@ -1,14 +1,26 @@
+using MauiApp1.Models;
+
 namespace MauiApp1.Views;
 
 public partial class RequestSpecialists : ContentPage
 {
+	private readonly DatabaseOperations _dbOps;
+
+
 	public RequestSpecialists()
 	{
 		InitializeComponent();
+
+		// Initialize database operations
+		_dbOps = new DatabaseOperations($"Data Source={Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "reference_values.sqlite")}");
 	}
 
 	private void OnAddRecordClicked(object sender, EventArgs e)
 	{
+		if (_dbOps != null)
+		{
+
+		}
 		// Retrieve values from the Entry and DatePicker controls
 		var skillName = SkillNamePicker.Title;
 		var organisationId = Convert.ToInt32(OrganisationIdEntry.Text);
@@ -25,4 +37,24 @@ private void OnCheckBoxCheckedChanged()
 		// You can access the checked state using e.Value
 	}
 
+	private string GetSelectedSkill() => SkillNamePicker.SelectedItem?.ToString();
+
+
+	private void PopulateSkillPicker()
+	{
+		try
+		{
+			var skills = _dbOps.GetAllRowNames("skill");
+			foreach (var skill in skills)
+			{
+				Console.WriteLine(skill);
+			}
+			SkillNamePicker.ItemsSource = skills;
+		}
+		catch (Exception ex)
+		{
+			Console.WriteLine(ex.Message);
+			DisplayAlert("Error", "Failed to load skills.", "OK");
+		}
+	}
 }
\ No newline at end of file

From 75045993191875876d29912d1d256818b69e2f3c Mon Sep 17 00:00:00 2001
From: Peter Stibitz <peter.stibitz@kabelmail.de>
Date: Sun, 29 Oct 2023 18:18:16 +0000
Subject: [PATCH 09/14] removed status from AddSkillRequest in
 SpecialistRequestService, removed DeleteSkillRequest, added
 AcceptSpecialistRequests, modified PopulateSkillPicker in RequestSpecialists

---
 AppShell.xaml                          |  4 +++
 DB-Manager.csproj                      |  3 ++
 Services/ISpecialistRequestService.cs  |  3 +-
 Services/SpecialistRequestService.cs   |  8 ++----
 Views/AcceptSpecialistRequests.xaml    | 12 ++++++++
 Views/AcceptSpecialistRequests.xaml.cs |  9 ++++++
 Views/RequestSpecialists.xaml          |  8 ++----
 Views/RequestSpecialists.xaml.cs       | 39 ++++++++++++++++++--------
 8 files changed, 61 insertions(+), 25 deletions(-)
 create mode 100644 Views/AcceptSpecialistRequests.xaml
 create mode 100644 Views/AcceptSpecialistRequests.xaml.cs

diff --git a/AppShell.xaml b/AppShell.xaml
index bb1210e..afcc9a8 100644
--- a/AppShell.xaml
+++ b/AppShell.xaml
@@ -16,6 +16,10 @@
         <ShellContent
             Title="Request Specialists"
             ContentTemplate="{DataTemplate views:RequestSpecialists}" />
+
+        <ShellContent
+            Title="Request Specialists"
+            ContentTemplate="{DataTemplate views:AcceptSpecialistRequests}" />
     </TabBar>
     
 </Shell>
diff --git a/DB-Manager.csproj b/DB-Manager.csproj
index b85e7d5..a9d52a9 100644
--- a/DB-Manager.csproj
+++ b/DB-Manager.csproj
@@ -69,6 +69,9 @@
 	</ItemGroup>
 
 	<ItemGroup>
+	  <MauiXaml Update="Views\AcceptSpecialistRequests.xaml">
+	    <Generator>MSBuild:Compile</Generator>
+	  </MauiXaml>
 	  <MauiXaml Update="Views\RequestSpecialists.xaml">
 	    <Generator>MSBuild:Compile</Generator>
 	  </MauiXaml>
diff --git a/Services/ISpecialistRequestService.cs b/Services/ISpecialistRequestService.cs
index c1c5b82..86bdcbc 100644
--- a/Services/ISpecialistRequestService.cs
+++ b/Services/ISpecialistRequestService.cs
@@ -10,10 +10,9 @@ namespace MauiApp1.Services
 	internal interface ISpecialistRequestService
 	{
 		void AddSkillRequest(string skillName, int numberRequired, 
-			DateTime startDate,DateTime endDate, string status);
+			DateTime startDate,DateTime endDate);
 		List<SkillRequest> GetAllSkillRequests();
 		SkillRequest GetSkillRequestById(int id);
 		void UpdateSkillRequest(int id, SkillRequest updatedRequest);
-		void DeleteSkillRequest(int id);
 	}
 }
diff --git a/Services/SpecialistRequestService.cs b/Services/SpecialistRequestService.cs
index 9c37968..1d7854f 100644
--- a/Services/SpecialistRequestService.cs
+++ b/Services/SpecialistRequestService.cs
@@ -31,7 +31,7 @@ public SpecialistRequestService(string connectionString)
 		}
 
 		void ISpecialistRequestService.AddSkillRequest(string skillName, int numberRequired,
-			DateTime startDate, DateTime endDate, string status)
+			DateTime startDate, DateTime endDate)
 		{
 			var commandText = @"INSERT INTO skills_request (skill_name, organisation_id, request_date, requested_by, number_required, start_date, end_date, status, confirmed_date) 
                                VALUES (@skill_name, @organisation_id, @request_date, @requested_by, @number_required, @start_date, @end_date, @status, @confirmed_date)";
@@ -52,10 +52,6 @@ void ISpecialistRequestService.AddSkillRequest(string skillName, int numberRequi
 			}
 		}
 
-		void ISpecialistRequestService.DeleteSkillRequest(int id)
-		{
-			throw new NotImplementedException();
-		}
 
 		List<SkillRequest> ISpecialistRequestService.GetAllSkillRequests()
 		{
@@ -74,7 +70,7 @@ void ISpecialistRequestService.UpdateSkillRequest(int id, SkillRequest updatedRe
 
 		void approveSkillRequest(int id, int organisationId) 
 		{ 
-			throw new NotImplementedException();
+			
 		}
 	}
 }
diff --git a/Views/AcceptSpecialistRequests.xaml b/Views/AcceptSpecialistRequests.xaml
new file mode 100644
index 0000000..27f486d
--- /dev/null
+++ b/Views/AcceptSpecialistRequests.xaml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="MauiApp1.Views.AcceptSpecialistRequests"
+             Title="AcceptSpecialistRequests">
+    <VerticalStackLayout>
+        <Label 
+            Text="Welcome to .NET MAUI!"
+            VerticalOptions="Center" 
+            HorizontalOptions="Center" />
+    </VerticalStackLayout>
+</ContentPage>
\ No newline at end of file
diff --git a/Views/AcceptSpecialistRequests.xaml.cs b/Views/AcceptSpecialistRequests.xaml.cs
new file mode 100644
index 0000000..122ab9e
--- /dev/null
+++ b/Views/AcceptSpecialistRequests.xaml.cs
@@ -0,0 +1,9 @@
+namespace MauiApp1.Views;
+
+public partial class AcceptSpecialistRequests : ContentPage
+{
+	public AcceptSpecialistRequests()
+	{
+		InitializeComponent();
+	}
+}
\ No newline at end of file
diff --git a/Views/RequestSpecialists.xaml b/Views/RequestSpecialists.xaml
index 2958956..fc21ee3 100644
--- a/Views/RequestSpecialists.xaml
+++ b/Views/RequestSpecialists.xaml
@@ -3,6 +3,7 @@
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              xmlns:sys="clr-namespace:System;assembly=netstandard"
              x:Class="MauiApp1.Views.RequestSpecialists"
+             BackgroundColor="#252525"
              Title="RequestSpecialists">
 
     <ScrollView>
@@ -16,18 +17,15 @@
                     <Label Text="Select required skill:" FontSize="20" FontAttributes="Bold" TextColor="White" />
                     <Picker x:Name="SkillNamePicker" TextColor="White" BackgroundColor="#454545" />
 
-                    <Entry Placeholder="Organisation ID" x:Name="OrganisationIdEntry" Keyboard="Numeric" 
-                           TextColor="White" 
-                           PlaceholderColor="#aaa" 
-                           BackgroundColor="#454545" />
                     <Entry Placeholder="Number Required" x:Name="NumberRequiredEntry" Keyboard="Numeric" 
                            TextColor="White" 
                            PlaceholderColor="#aaa" 
                            BackgroundColor="#454545" />
                     <DatePicker x:Name="StartDatePicker" MinimumDate="{x:Static sys:DateTime.Today}"
+                                DateSelected="StartDatePicker_DateSelected"
                                 TextColor="White" 
                                 BackgroundColor="#454545" />
-                    <DatePicker x:Name="EndDatePicker" MinimumDate="{x:Static sys:DateTime.Today}"
+                    <DatePicker x:Name="EndDatePicker" MinimumDate="{Binding SelectedDate, Source={x:Reference StartDatePicker}}"
                                 TextColor="White" 
                                 BackgroundColor="#454545" />
                     
diff --git a/Views/RequestSpecialists.xaml.cs b/Views/RequestSpecialists.xaml.cs
index 271904b..ef3e118 100644
--- a/Views/RequestSpecialists.xaml.cs
+++ b/Views/RequestSpecialists.xaml.cs
@@ -1,34 +1,44 @@
 using MauiApp1.Models;
+using MauiApp1.Services;
 
 namespace MauiApp1.Views;
 
 public partial class RequestSpecialists : ContentPage
 {
 	private readonly DatabaseOperations _dbOps;
-
+	private ISpecialistRequestService specialistRequestService;
 
 	public RequestSpecialists()
 	{
 		InitializeComponent();
 
-		// Initialize database operations
 		_dbOps = new DatabaseOperations($"Data Source={Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "reference_values.sqlite")}");
+		specialistRequestService = new SpecialistRequestService($"Data Source={Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "reference_values.sqlite")}");
+
+		PopulateSkillPicker();
 	}
 
-	private void OnAddRecordClicked(object sender, EventArgs e)
+	private async void OnAddRecordClicked(object sender, EventArgs e)
 	{
-		if (_dbOps != null)
-		{
-
-		}
-		// Retrieve values from the Entry and DatePicker controls
 		var skillName = SkillNamePicker.Title;
-		var organisationId = Convert.ToInt32(OrganisationIdEntry.Text);
-		var requestDate = DateTime.Today;
-		var requestedBy = 0;
 		var numberRequired = Convert.ToInt32(NumberRequiredEntry.Text);
 		var startDate = StartDatePicker.Date;
 		var endDate = EndDatePicker.Date;
+
+		if (_dbOps != null && skillName != null)
+		{
+			try
+			{
+				specialistRequestService.AddSkillRequest(skillName, numberRequired,
+					startDate, endDate);
+				await DisplayAlert("Success", $"Successfully inserted record into skills.", "OK");
+			}
+			catch (Exception ex)
+			{
+				await DisplayAlert("Error", $"Failed to insert record into skills. Error: {ex.Message}", "OK");
+				return;
+			}
+		}
 	}
 
 	private void OnCheckBoxCheckedChanged()
@@ -44,7 +54,7 @@ private void PopulateSkillPicker()
 	{
 		try
 		{
-			var skills = _dbOps.GetAllRowNames("skill");
+			var skills = _dbOps.GetAllRecords("skill");
 			foreach (var skill in skills)
 			{
 				Console.WriteLine(skill);
@@ -57,4 +67,9 @@ private void PopulateSkillPicker()
 			DisplayAlert("Error", "Failed to load skills.", "OK");
 		}
 	}
+
+	private void StartDatePicker_DateSelected(object sender, DateChangedEventArgs e)
+	{
+		EndDatePicker.MinimumDate = e.NewDate;
+	}
 }
\ No newline at end of file

From b4995762994ebd08522ba0c00c58919bd29984d9 Mon Sep 17 00:00:00 2001
From: Peter Stibitz <peter.stibitz@kabelmail.de>
Date: Sun, 29 Oct 2023 22:53:29 +0000
Subject: [PATCH 10/14] Entered Standardises test values (with Ingnore), Added
 GetAllSkillRequests(), to display a list of the current requests

---
 AppShell.xaml                          |  2 +-
 DatabaseInitialiser.cs                 | 19 +++++---
 Services/SpecialistRequestService.cs   | 63 ++++++++++++++++++++------
 Views/AcceptSpecialistRequests.xaml    | 17 ++++---
 Views/AcceptSpecialistRequests.xaml.cs | 17 +++++++
 Views/RequestSpecialists.xaml          |  8 ++--
 Views/RequestSpecialists.xaml.cs       | 29 ++++++++----
 7 files changed, 117 insertions(+), 38 deletions(-)

diff --git a/AppShell.xaml b/AppShell.xaml
index afcc9a8..90b5da6 100644
--- a/AppShell.xaml
+++ b/AppShell.xaml
@@ -18,7 +18,7 @@
             ContentTemplate="{DataTemplate views:RequestSpecialists}" />
 
         <ShellContent
-            Title="Request Specialists"
+            Title="Accept Specialist Requests"
             ContentTemplate="{DataTemplate views:AcceptSpecialistRequests}" />
     </TabBar>
     
diff --git a/DatabaseInitialiser.cs b/DatabaseInitialiser.cs
index a1c700f..aece430 100644
--- a/DatabaseInitialiser.cs
+++ b/DatabaseInitialiser.cs
@@ -1,6 +1,7 @@
 using Microsoft.Data.Sqlite;
 using System;
 using System.Collections.Generic;
+using System.Xml.Linq;
 
 /// <summary>
 /// Initializes a SQLite database by creating the necessary tables.
@@ -100,14 +101,20 @@ private static List<string> GetTableCreationCommands()
             "CREATE TABLE IF NOT EXISTS assignment_status (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
             "CREATE TABLE IF NOT EXISTS position_status (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
             "CREATE TABLE IF NOT EXISTS role (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
-            "CREATE TABLE IF NOT EXISTS skill (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
+			"CREATE TABLE IF NOT EXISTS skill (Name TEXT NOT NULL PRIMARY KEY)",
             "CREATE TABLE IF NOT EXISTS team_member (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
             "CREATE TABLE IF NOT EXISTS partner_agencies (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL)",
-			"CREATE TABLE IF NOT EXISTS skills_request (Id INTEGER PRIMARY KEY AUTOINCREMENT, skill_name TEXT NOT NULL, " +
-			"organisation_id INTEGER, request_date DATE NOT NULL, requested_by INTEGER, number_required INTEGER NOT NULL, " +
-			"start_date DATE NOT NULL, end_date DATE NOT NULL, status TEXT CHECK (status IN ('Pending', 'Approved'))," +
+			"CREATE TABLE IF NOT EXISTS skills_request (Id INTEGER PRIMARY KEY AUTOINCREMENT, skill_name TEXT, " +
+			"organisation_id INTEGER, request_date DATE, requested_by INTEGER, number_required INTEGER, " +
+			"start_date DATE, end_date DATE, status TEXT CHECK (status IN ('Pending', 'Approved'))," +
             " confirmed_date DATE, FOREIGN KEY (skill_name) REFERENCES skill(Name), " +
-            "FOREIGN KEY (organisation_id) REFERENCES organisation(id),FOREIGN KEY (requested_by) REFERENCES person(id));"
-		};
+            "FOREIGN KEY (organisation_id) REFERENCES organisation(Id),FOREIGN KEY (requested_by) REFERENCES person(Id));"
+
+            //TEST Values
+			,"INSERT OR IGNORE INTO person (Id, Name, FieldName) VALUES (0,'John Doe', 'Healthcare');"
+			,"INSERT OR IGNORE INTO organisation (Id, Name) VALUES (0, 'No Organisation');"
+			,"INSERT OR IGNORE INTO skill (Name) VALUES ('rescue'),('rebuild Infrastructure'),('mental & emotional support'),('first aid');"
+            //,"DROP TABLE IF EXISTS skill;"
+	};
     }
 }
diff --git a/Services/SpecialistRequestService.cs b/Services/SpecialistRequestService.cs
index 1d7854f..71ba7e1 100644
--- a/Services/SpecialistRequestService.cs
+++ b/Services/SpecialistRequestService.cs
@@ -30,34 +30,33 @@ public SpecialistRequestService(string connectionString)
 			}
 		}
 
+
 		void ISpecialistRequestService.AddSkillRequest(string skillName, int numberRequired,
 			DateTime startDate, DateTime endDate)
 		{
-			var commandText = @"INSERT INTO skills_request (skill_name, organisation_id, request_date, requested_by, number_required, start_date, end_date, status, confirmed_date) 
-                               VALUES (@skill_name, @organisation_id, @request_date, @requested_by, @number_required, @start_date, @end_date, @status, @confirmed_date)";
+			var commandText = "INSERT INTO skills_request " +
+									  "(skill_name, organisation_id, request_date, requested_by, number_required, " +
+									  "start_date, end_date, status, confirmed_date) " +
+									  "VALUES " +
+									  "(@skill_name, @organisation_id, @request_date, @requested_by, @number_required, " +
+									  "@start_date, @end_date, @status, @confirmed_date)";
 
 			using (var command = new SqliteCommand(commandText, _connection))
 			{
 				command.Parameters.AddWithValue("@skill_name", skillName);
-				command.Parameters.AddWithValue("@organisation_id", null);
+				command.Parameters.AddWithValue("@organisation_id", 0); 
 				command.Parameters.AddWithValue("@request_date", DateTime.Today);
-				command.Parameters.AddWithValue("@requested_by", null); // specific Persons and users not implemented yet 
+				command.Parameters.AddWithValue("@requested_by", 0); // specific Persons and users not implemented yet 
 				command.Parameters.AddWithValue("@number_required", numberRequired);
 				command.Parameters.AddWithValue("@start_date", startDate);
 				command.Parameters.AddWithValue("@end_date", endDate);
 				command.Parameters.AddWithValue("@status", "Pending");
-				command.Parameters.AddWithValue("@confirmed_date", null);
+				command.Parameters.AddWithValue("@confirmed_date", DateTime.MinValue);
 
 				command.ExecuteNonQuery();
 			}
 		}
 
-
-		List<SkillRequest> ISpecialistRequestService.GetAllSkillRequests()
-		{
-			throw new NotImplementedException();
-		}
-
 		SkillRequest ISpecialistRequestService.GetSkillRequestById(int id)
 		{
 			throw new NotImplementedException();
@@ -69,8 +68,46 @@ void ISpecialistRequestService.UpdateSkillRequest(int id, SkillRequest updatedRe
 		}
 
 		void approveSkillRequest(int id, int organisationId) 
-		{ 
-			
+		{
+			var commandText = $"UPDATE skills_request SET confirmedDate = {DateTime.Today}," +
+				$" organisation_id = {organisationId}, status = 'Approved' WHERE Id = {id};";
+			using (var command = new SqliteCommand(commandText, _connection))
+			{
+				command.ExecuteNonQuery();
+			}
+
+		}
+
+		List<SkillRequest> ISpecialistRequestService.GetAllSkillRequests()
+		{
+			var skillRequests = new List<SkillRequest>();
+			var commandText = "SELECT * FROM skills_request";
+
+			using var command = _connection.CreateCommand();
+			command.CommandText = commandText;
+
+			using (var reader = command.ExecuteReader())
+			{
+				while (reader.Read())
+				{
+					SkillRequest skillRequest = new SkillRequest
+					{
+						Id = reader.GetInt32(0),
+						SkillName = reader.GetString(1),
+						OrganisationId = reader.GetInt32(2),
+						RequestDate = reader.GetDateTime(3),
+						RequestedBy = reader.GetInt32(4),
+						NumberRequired = reader.GetInt32(5),
+						StartDate = reader.GetDateTime(6),
+						EndDate = reader.GetDateTime(7),
+						Status = reader.GetString(8),
+						ConfirmedDate = reader.GetDateTime(9)
+					};
+
+					skillRequests.Add(skillRequest);
+				}
+			}
+			return skillRequests;
 		}
 	}
 }
diff --git a/Views/AcceptSpecialistRequests.xaml b/Views/AcceptSpecialistRequests.xaml
index 27f486d..d93e507 100644
--- a/Views/AcceptSpecialistRequests.xaml
+++ b/Views/AcceptSpecialistRequests.xaml
@@ -3,10 +3,15 @@
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              x:Class="MauiApp1.Views.AcceptSpecialistRequests"
              Title="AcceptSpecialistRequests">
-    <VerticalStackLayout>
-        <Label 
-            Text="Welcome to .NET MAUI!"
-            VerticalOptions="Center" 
-            HorizontalOptions="Center" />
-    </VerticalStackLayout>
+    <ListView x:Name="SkillsRequestsListView">
+        <ListView.ItemTemplate>
+            <DataTemplate>
+                <ViewCell>
+                    <StackLayout Orientation="Horizontal" Padding="10">
+                        <Label Text="{Binding SkillName}" FontSize="14" TextColor="White"/>
+                    </StackLayout>
+                </ViewCell>
+            </DataTemplate>
+        </ListView.ItemTemplate>
+    </ListView>
 </ContentPage>
\ No newline at end of file
diff --git a/Views/AcceptSpecialistRequests.xaml.cs b/Views/AcceptSpecialistRequests.xaml.cs
index 122ab9e..5d56f31 100644
--- a/Views/AcceptSpecialistRequests.xaml.cs
+++ b/Views/AcceptSpecialistRequests.xaml.cs
@@ -1,9 +1,26 @@
+using MauiApp1.Models;
+using MauiApp1.Services;
+
 namespace MauiApp1.Views;
 
 public partial class AcceptSpecialistRequests : ContentPage
 {
+	private readonly DatabaseOperations _dbOps;
+	private ISpecialistRequestService specialistRequestService;
+	private List<SkillRequest> _currentRecords;
+
 	public AcceptSpecialistRequests()
 	{
 		InitializeComponent();
+
+		_dbOps = new DatabaseOperations($"Data Source={Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "reference_values.sqlite")}");
+		specialistRequestService = new SpecialistRequestService($"Data Source={Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "reference_values.sqlite")}");
+		populateRequestList();
+	}
+
+	private void populateRequestList()
+	{
+		_currentRecords = specialistRequestService.GetAllSkillRequests();
+		SkillsRequestsListView.ItemsSource = _currentRecords;
 	}
 }
\ No newline at end of file
diff --git a/Views/RequestSpecialists.xaml b/Views/RequestSpecialists.xaml
index fc21ee3..08d47d1 100644
--- a/Views/RequestSpecialists.xaml
+++ b/Views/RequestSpecialists.xaml
@@ -15,9 +15,10 @@
                 <VerticalStackLayout Spacing="15">
                     
                     <Label Text="Select required skill:" FontSize="20" FontAttributes="Bold" TextColor="White" />
-                    <Picker x:Name="SkillNamePicker" TextColor="White" BackgroundColor="#454545" />
+                    <Picker x:Name="SkillNamePicker" TextColor="White" BackgroundColor="#454545" 
+                            />
 
-                    <Entry Placeholder="Number Required" x:Name="NumberRequiredEntry" Keyboard="Numeric" 
+                    <Entry Placeholder="Number Required" x:Name="NumberRequiredEntry" Keyboard="Numeric"
                            TextColor="White" 
                            PlaceholderColor="#aaa" 
                            BackgroundColor="#454545" />
@@ -25,7 +26,7 @@
                                 DateSelected="StartDatePicker_DateSelected"
                                 TextColor="White" 
                                 BackgroundColor="#454545" />
-                    <DatePicker x:Name="EndDatePicker" MinimumDate="{Binding SelectedDate, Source={x:Reference StartDatePicker}}"
+                    <DatePicker x:Name="EndDatePicker" MinimumDate="{Binding Source={x:Reference StartDatePicker}}"
                                 TextColor="White" 
                                 BackgroundColor="#454545" />
                     
@@ -41,7 +42,6 @@
                     <DataTemplate>
                         <ViewCell>
                             <StackLayout Orientation="Horizontal" Padding="10">
-                                <CheckBox IsEnabled="False" IsChecked="{Binding IsApproved}" />
                                 <Label Text="{Binding Name}" VerticalOptions="CenterAndExpand" />
                             </StackLayout>
                         </ViewCell>
diff --git a/Views/RequestSpecialists.xaml.cs b/Views/RequestSpecialists.xaml.cs
index ef3e118..9677332 100644
--- a/Views/RequestSpecialists.xaml.cs
+++ b/Views/RequestSpecialists.xaml.cs
@@ -7,6 +7,7 @@ public partial class RequestSpecialists : ContentPage
 {
 	private readonly DatabaseOperations _dbOps;
 	private ISpecialistRequestService specialistRequestService;
+	private DateTime selectedDate;
 
 	public RequestSpecialists()
 	{
@@ -20,12 +21,11 @@ public RequestSpecialists()
 
 	private async void OnAddRecordClicked(object sender, EventArgs e)
 	{
-		var skillName = SkillNamePicker.Title;
+		var skillName = (string)SkillNamePicker.SelectedItem;
 		var numberRequired = Convert.ToInt32(NumberRequiredEntry.Text);
 		var startDate = StartDatePicker.Date;
 		var endDate = EndDatePicker.Date;
-
-		if (_dbOps != null && skillName != null)
+		if (CheckAddable(skillName, numberRequired))
 		{
 			try
 			{
@@ -41,14 +41,26 @@ private async void OnAddRecordClicked(object sender, EventArgs e)
 		}
 	}
 
-	private void OnCheckBoxCheckedChanged()
+	private  bool CheckAddable(string skillName, int numberRequired)
 	{
-		// Handle checkbox checked changed event here
-		// You can access the checked state using e.Value
+		if (_dbOps == null)
+		{
+			DisplayAlert("Error", $"No Database-Connection", "OK");
+			return false;
+		}
+		if (skillName == null || skillName == "")
+		{
+			DisplayAlert("Error", $"No Skill entered", "OK");
+			return false;
+		}
+		if (numberRequired <= 0)
+		{
+			DisplayAlert("Error", $"Number of requested Helpers requires to be bigger than Zero", "OK");
+			return false;
+		}
+		return true;
 	}
 
-	private string GetSelectedSkill() => SkillNamePicker.SelectedItem?.ToString();
-
 
 	private void PopulateSkillPicker()
 	{
@@ -72,4 +84,5 @@ private void StartDatePicker_DateSelected(object sender, DateChangedEventArgs e)
 	{
 		EndDatePicker.MinimumDate = e.NewDate;
 	}
+
 }
\ No newline at end of file

From 44e220b2460da3009494687749c8e443adf0d77b Mon Sep 17 00:00:00 2001
From: Peter Stibitz <peter.stibitz@kabelmail.de>
Date: Mon, 30 Oct 2023 03:55:07 +0000
Subject: [PATCH 11/14] Finished SpecialistRequestService by fixing SQL query
 for Approval

---
 DatabaseInitialiser.cs                 |   6 +-
 DatabaseOperations.cs                  |  44 ++++++++---
 Services/ISpecialistRequestService.cs  |  27 ++++++-
 Services/SpecialistRequestService.cs   |  88 +++++++++++++--------
 Views/AcceptSpecialistRequests.xaml    | 102 ++++++++++++++++++++++---
 Views/AcceptSpecialistRequests.xaml.cs |  78 ++++++++++++++++++-
 Views/RequestSpecialists.xaml.cs       |  14 +++-
 7 files changed, 297 insertions(+), 62 deletions(-)

diff --git a/DatabaseInitialiser.cs b/DatabaseInitialiser.cs
index aece430..4a21a6c 100644
--- a/DatabaseInitialiser.cs
+++ b/DatabaseInitialiser.cs
@@ -110,11 +110,11 @@ private static List<string> GetTableCreationCommands()
             " confirmed_date DATE, FOREIGN KEY (skill_name) REFERENCES skill(Name), " +
             "FOREIGN KEY (organisation_id) REFERENCES organisation(Id),FOREIGN KEY (requested_by) REFERENCES person(Id));"
 
-            //TEST Values
+            //TEST Values for Specialist Requests
 			,"INSERT OR IGNORE INTO person (Id, Name, FieldName) VALUES (0,'John Doe', 'Healthcare');"
-			,"INSERT OR IGNORE INTO organisation (Id, Name) VALUES (0, 'No Organisation');"
+			,"INSERT OR IGNORE INTO organisation (Id, Name) VALUES (0, 'No Organisation'),(2, 'Doctors Without Borders'),(2, 'Care'),(3, 'International Medical Corps');"
 			,"INSERT OR IGNORE INTO skill (Name) VALUES ('rescue'),('rebuild Infrastructure'),('mental & emotional support'),('first aid');"
-            //,"DROP TABLE IF EXISTS skill;"
+            //,"DROP TABLE IF EXISTS skills_request;"
 	};
     }
 }
diff --git a/DatabaseOperations.cs b/DatabaseOperations.cs
index 52382a4..8a9ea8b 100644
--- a/DatabaseOperations.cs
+++ b/DatabaseOperations.cs
@@ -74,24 +74,48 @@ public int GetRecordIdByName(string tableName, string name)
         command.CommandText = commandText;
         command.Parameters.AddWithValue("@name", name);
 
-        var result = command.ExecuteScalar();
+        var result = Convert.ToInt32(command.ExecuteScalar());
 
-        if (result != null && result is int id)
+		if (result is int id)
         {
             return id;
         }
 
-        throw new Exception($"No record with the name '{name}' found in table '{tableName}'.");
+        throw new Exception($"No record with the name '{name}' found in table '{tableName}'." );
     }
 
 
-    /// <summary>
-    /// Updates a record's name in the specified table based on the provided ID.
-    /// </summary>
-    /// <param name="tableName">Target table name.</param>
-    /// <param name="id">ID of the record to update.</param>
-    /// <param name="newName">New name to set for the record.</param>
-    public void UpdateRecord(string tableName, int id, string newName)
+	/// <summary>
+	/// Retrieves the name of a record from a specified table based on its ID.
+	/// </summary>
+	/// <param name="tableName">The table to search in.</param>
+	/// <param name="id">The id of the record to search for.</param>
+	/// <returns>The ID of the record if found; otherwise, throws an exception.</returns>
+	public string GetRecordNameById(string tableName, int id)
+	{
+		var commandText = $"SELECT Id FROM {tableName} WHERE Id = @Id LIMIT 1";
+
+		using var command = _connection.CreateCommand();
+		command.CommandText = commandText;
+		command.Parameters.AddWithValue("@Id", id);
+
+		var result = command.ExecuteScalar();
+
+		if (result != null && result is string name)
+		{
+			return name;
+		}
+
+		throw new Exception($"No record with the name '{id}' found in table '{tableName}'.");
+	}
+
+	/// <summary>
+	/// Updates a record's name in the specified table based on the provided ID.
+	/// </summary>
+	/// <param name="tableName">Target table name.</param>
+	/// <param name="id">ID of the record to update.</param>
+	/// <param name="newName">New name to set for the record.</param>
+	public void UpdateRecord(string tableName, int id, string newName)
     {
         var commandText = $"UPDATE {tableName} SET Name = @name WHERE Id = @id";
         ExecuteNonQuery(commandText, ("@name", newName), ("@id", id));
diff --git a/Services/ISpecialistRequestService.cs b/Services/ISpecialistRequestService.cs
index 86bdcbc..9f2548f 100644
--- a/Services/ISpecialistRequestService.cs
+++ b/Services/ISpecialistRequestService.cs
@@ -9,10 +9,31 @@ namespace MauiApp1.Services
 {
 	internal interface ISpecialistRequestService
 	{
-		void AddSkillRequest(string skillName, int numberRequired, 
+		/// <summary>
+		/// Inserts a new unapporved Specialist Request in the skills_request table
+		/// (confirmed_date can not be null so it is set to MinValue aswell as organisation.
+		/// requested_by is a dummy Value)
+		/// </summary>
+		/// <param name="skillName">Required Skill</param>
+		/// <param name="numberRequired">Number of Persons Required</param>
+		/// <param name="startDate">Start Date</param>
+		/// <param name="endDate">End Date</param>
+		void AddUnapprovedSkillRequest(string skillName, int numberRequired, 
 			DateTime startDate,DateTime endDate);
+
+		/// <summary>
+		/// Approve Request by assingning the date of approval,
+		/// changing the Status to Approved, and Assignig the Corresponding Organisation
+		/// </summary>
+		/// <param name="id"></param>
+		/// <param name="organisationId"></param>
 		List<SkillRequest> GetAllSkillRequests();
-		SkillRequest GetSkillRequestById(int id);
-		void UpdateSkillRequest(int id, SkillRequest updatedRequest);
+
+		/// <summary>
+		/// Returns a list of SkillRequest objects by Calling a 
+		/// SELECT statement for skills_request
+		/// </summary>
+		/// <returns>A list of SkillRequest objects, created from the database</returns>
+		void approveSkillRequest(int id, int organisationId);
 	}
 }
diff --git a/Services/SpecialistRequestService.cs b/Services/SpecialistRequestService.cs
index 71ba7e1..b74f262 100644
--- a/Services/SpecialistRequestService.cs
+++ b/Services/SpecialistRequestService.cs
@@ -8,6 +8,9 @@
 
 namespace MauiApp1.Services
 {
+	/// <summary>
+	/// Service to Apply the required SQL Statements to Add new 
+	/// </summary>
 	internal class SpecialistRequestService : ISpecialistRequestService
 	{
 		private readonly SqliteConnection _connection;
@@ -30,8 +33,16 @@ public SpecialistRequestService(string connectionString)
 			}
 		}
 
-
-		void ISpecialistRequestService.AddSkillRequest(string skillName, int numberRequired,
+		/// <summary>
+		/// Inserts a new unapporved Specialist Request in the skills_request table
+		/// (confirmed_date can not be null so it is set to MinValue aswell as organisation.
+		/// requested_by is a dummy Value)
+		/// </summary>
+		/// <param name="skillName">Required Skill</param>
+		/// <param name="numberRequired">Number of Persons Required</param>
+		/// <param name="startDate">Start Date</param>
+		/// <param name="endDate">End Date</param>
+		void ISpecialistRequestService.AddUnapprovedSkillRequest(string skillName, int numberRequired,
 			DateTime startDate, DateTime endDate)
 		{
 			var commandText = "INSERT INTO skills_request " +
@@ -46,7 +57,7 @@ void ISpecialistRequestService.AddSkillRequest(string skillName, int numberRequi
 				command.Parameters.AddWithValue("@skill_name", skillName);
 				command.Parameters.AddWithValue("@organisation_id", 0); 
 				command.Parameters.AddWithValue("@request_date", DateTime.Today);
-				command.Parameters.AddWithValue("@requested_by", 0); // specific Persons and users not implemented yet 
+				command.Parameters.AddWithValue("@requested_by", 0); // dummy value 
 				command.Parameters.AddWithValue("@number_required", numberRequired);
 				command.Parameters.AddWithValue("@start_date", startDate);
 				command.Parameters.AddWithValue("@end_date", endDate);
@@ -57,27 +68,33 @@ void ISpecialistRequestService.AddSkillRequest(string skillName, int numberRequi
 			}
 		}
 
-		SkillRequest ISpecialistRequestService.GetSkillRequestById(int id)
-		{
-			throw new NotImplementedException();
-		}
-
-		void ISpecialistRequestService.UpdateSkillRequest(int id, SkillRequest updatedRequest)
+		/// <summary>
+		/// Approve Request by assingning the date of approval,
+		/// changing the Status to Approved, and Assignig the Corresponding Organisation
+		/// </summary>
+		/// <param name="id"></param>
+		/// <param name="organisationId"></param>
+		void ISpecialistRequestService.approveSkillRequest(int id, int organisationId)
 		{
-			throw new NotImplementedException();
-		}
+			var currentDate = DateTime.Today;
+			var commandText = "UPDATE skills_request SET confirmed_date = @currentDate," +
+				" organisation_id = @organisationId, status = 'Approved' WHERE Id = @id";
 
-		void approveSkillRequest(int id, int organisationId) 
-		{
-			var commandText = $"UPDATE skills_request SET confirmedDate = {DateTime.Today}," +
-				$" organisation_id = {organisationId}, status = 'Approved' WHERE Id = {id};";
 			using (var command = new SqliteCommand(commandText, _connection))
 			{
+				command.Parameters.AddWithValue("@currentDate", currentDate);
+				command.Parameters.AddWithValue("@organisationId", organisationId);
+				command.Parameters.AddWithValue("@id", id);
+
 				command.ExecuteNonQuery();
 			}
-
 		}
 
+		/// <summary>
+		/// Returns a list of SkillRequest objects by Calling a 
+		/// SELECT statement for skills_request
+		/// </summary>
+		/// <returns>A list of SkillRequest objects, created from the database</returns>
 		List<SkillRequest> ISpecialistRequestService.GetAllSkillRequests()
 		{
 			var skillRequests = new List<SkillRequest>();
@@ -90,24 +107,35 @@ List<SkillRequest> ISpecialistRequestService.GetAllSkillRequests()
 			{
 				while (reader.Read())
 				{
-					SkillRequest skillRequest = new SkillRequest
-					{
-						Id = reader.GetInt32(0),
-						SkillName = reader.GetString(1),
-						OrganisationId = reader.GetInt32(2),
-						RequestDate = reader.GetDateTime(3),
-						RequestedBy = reader.GetInt32(4),
-						NumberRequired = reader.GetInt32(5),
-						StartDate = reader.GetDateTime(6),
-						EndDate = reader.GetDateTime(7),
-						Status = reader.GetString(8),
-						ConfirmedDate = reader.GetDateTime(9)
-					};
-
+					SkillRequest skillRequest = CreateSkillRequestFromReader(reader);
 					skillRequests.Add(skillRequest);
 				}
 			}
+
 			return skillRequests;
 		}
+
+		/// <summary>
+		/// Creates one SkillRequest object by transfering 
+		/// data from the reader.
+		/// </summary>
+		/// <param name="reader">Reading Database respose</param>
+		/// <returns></returns>
+		private SkillRequest CreateSkillRequestFromReader(SqliteDataReader reader)
+		{
+			return new SkillRequest
+			{
+				Id = reader.GetInt32(0),
+				SkillName = reader.GetString(1),
+				OrganisationId = reader.GetInt32(2),
+				RequestDate = reader.GetDateTime(3),
+				RequestedBy = reader.GetInt32(4),
+				NumberRequired = reader.GetInt32(5),
+				StartDate = reader.GetDateTime(6),
+				EndDate = reader.GetDateTime(7),
+				Status = reader.GetString(8),
+				ConfirmedDate = reader.GetDateTime(9)
+			};
+		}
 	}
 }
diff --git a/Views/AcceptSpecialistRequests.xaml b/Views/AcceptSpecialistRequests.xaml
index d93e507..c7ba9a8 100644
--- a/Views/AcceptSpecialistRequests.xaml
+++ b/Views/AcceptSpecialistRequests.xaml
@@ -1,17 +1,97 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             xmlns:views="clr-namespace:MauiApp1.Views"
              x:Class="MauiApp1.Views.AcceptSpecialistRequests"
+             BackgroundColor="#252525"
              Title="AcceptSpecialistRequests">
-    <ListView x:Name="SkillsRequestsListView">
-        <ListView.ItemTemplate>
-            <DataTemplate>
-                <ViewCell>
-                    <StackLayout Orientation="Horizontal" Padding="10">
-                        <Label Text="{Binding SkillName}" FontSize="14" TextColor="White"/>
-                    </StackLayout>
-                </ViewCell>
-            </DataTemplate>
-        </ListView.ItemTemplate>
-    </ListView>
+    <ScrollView>
+        <VerticalStackLayout Spacing="30" Padding="30,20" VerticalOptions="Center">
+            <Frame CornerRadius="10" Padding="20" BackgroundColor="#373737">
+                <VerticalStackLayout Spacing="15">
+                    <Label Text="Select your Organisation:" FontSize="20" FontAttributes="Bold" TextColor="White" />
+                    <Picker x:Name="OrganisationPicker" TextColor="White" BackgroundColor="#454545" />
+                </VerticalStackLayout>
+            </Frame>
+            <ListView x:Name="SkillsRequestsListView" BackgroundColor="#373737" SeparatorColor="Gray">
+                <ListView.ItemTemplate>
+                    <DataTemplate>
+                        <ViewCell>
+                            <StackLayout Orientation="Vertical" Padding="20" BackgroundColor="#373737">
+                                <Label Text="{Binding Id, StringFormat='Request: {0:F0}'}" FontSize="20" FontAttributes="Bold" TextColor="White"/>
+                                <Label Text="" />
+                                <Label FontSize="16" TextColor="White">
+                                    <Label.FormattedText>
+                                        <FormattedString>
+                                            <Span Text="Skill required: " FontAttributes="Bold"/>
+                                            <Span Text="{Binding SkillName}" />
+                                        </FormattedString>
+                                    </Label.FormattedText>
+                                </Label>
+                                <Label FontSize="16" TextColor="White">
+                                    <Label.FormattedText>
+                                        <FormattedString>
+                                            <Span Text="Requested on the: " FontAttributes="Bold"/>
+                                            <Span Text="{Binding RequestDate, StringFormat='{0:d/M/yyyy}'}"/>
+                                        </FormattedString>
+                                    </Label.FormattedText>
+                                </Label>
+                                <Label FontSize="16" TextColor="White">
+                                    <Label.FormattedText>
+                                        <FormattedString>
+                                            <Span Text="By: " FontAttributes="Bold"/>
+                                            <Span Text="{Binding RequestedBy}"/>
+                                        </FormattedString>
+                                    </Label.FormattedText>
+                                </Label>
+                                <Label FontSize="16" TextColor="White">
+                                    <Label.FormattedText>
+                                        <FormattedString>
+                                            <Span Text="Requires that many Helpers: " FontAttributes="Bold"/>
+                                            <Span Text="{Binding NumberRequired}" />
+                                        </FormattedString>
+                                    </Label.FormattedText>
+                                </Label>
+                                <Label FontSize="16" TextColor="White">
+                                    <Label.FormattedText>
+                                        <FormattedString>
+                                            <Span Text="Start Date: " FontAttributes="Bold"/>
+                                            <Span Text="{Binding StartDate, StringFormat='{0:d/M/yyyy}'}" />
+                                        </FormattedString>
+                                    </Label.FormattedText>
+                                </Label>
+                                <Label FontSize="16" TextColor="White">
+                                    <Label.FormattedText>
+                                        <FormattedString>
+                                            <Span Text="End Date: " FontAttributes="Bold" />
+                                            <Span Text="{Binding EndDate, StringFormat='{0:d/M/yyyy}'}" />
+                                        </FormattedString>
+                                    </Label.FormattedText>
+                                </Label>
+                                <Label FontSize="16" TextColor="White">
+                                    <Label.FormattedText>
+                                        <FormattedString>
+                                            <Span Text="Current Status: " FontAttributes="Bold" />
+                                            <Span Text="{Binding Status}" />
+                                        </FormattedString>
+                                    </Label.FormattedText>
+                                </Label>
+                                <Label FontSize="9" TextColor="White">
+                                    <Label.FormattedText>
+                                        <FormattedString>
+                                            <Span Text="Confirmed: " FontAttributes="Bold"/>
+                                            <Span Text="{Binding ConfirmedDate, StringFormat='{0:d/M/yyyy}'}" />
+                                        </FormattedString>
+                                    </Label.FormattedText>
+                                </Label>
+
+                                <Button Text="Approve with my company" Clicked="OnButtonClick" BackgroundColor="#4CAF50" TextColor="White" CornerRadius="8"  />
+                                
+                            </StackLayout>
+                        </ViewCell>
+                    </DataTemplate>
+                </ListView.ItemTemplate>
+            </ListView>
+        </VerticalStackLayout>
+    </ScrollView>
 </ContentPage>
\ No newline at end of file
diff --git a/Views/AcceptSpecialistRequests.xaml.cs b/Views/AcceptSpecialistRequests.xaml.cs
index 5d56f31..8fd155e 100644
--- a/Views/AcceptSpecialistRequests.xaml.cs
+++ b/Views/AcceptSpecialistRequests.xaml.cs
@@ -16,11 +16,83 @@ public AcceptSpecialistRequests()
 		_dbOps = new DatabaseOperations($"Data Source={Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "reference_values.sqlite")}");
 		specialistRequestService = new SpecialistRequestService($"Data Source={Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "reference_values.sqlite")}");
 		populateRequestList();
+		PopulateOrganisationPicker();
 	}
 
-	private void populateRequestList()
+	private async void populateRequestList()
 	{
-		_currentRecords = specialistRequestService.GetAllSkillRequests();
-		SkillsRequestsListView.ItemsSource = _currentRecords;
+		try
+		{
+			_currentRecords = specialistRequestService.GetAllSkillRequests();
+			SkillsRequestsListView.ItemsSource = _currentRecords;
+		}
+		catch (Exception ex) 
+		{
+			await DisplayAlert("Error", $"Failed to load Requests. Error: {ex.Message}", "OK");
+			return;
+		}
 	}
+
+
+	private async void OnButtonClick(object sender, EventArgs e)
+	{
+		if (sender is Button button && button.BindingContext is SkillRequest item)
+		{
+			try
+			{
+				var OrganisationName = (string)OrganisationPicker.SelectedItem;
+				specialistRequestService.approveSkillRequest(item.Id, GetOrganisationId(OrganisationName));
+				await DisplayAlert("Success", $"Successfully inserted record into skills.", "OK");
+			}
+			catch (Exception ex)
+			{
+				await DisplayAlert("Error", $"Failed to approve Request. Error: {ex.Message}", "OK");
+				return;
+			}
+		}
+		RefreshRecordsList();
+	}
+
+
+	private int GetOrganisationId(string name)
+	{
+		var result = _dbOps.GetRecordIdByName("organisation", name);
+		return result;
+	}
+
+	private void PopulateOrganisationPicker()
+	{
+		try
+		{
+			var organisations = _dbOps.GetAllRecords("organisation");
+			foreach (var organisation in organisations)
+			{
+				Console.WriteLine(organisation);
+			}
+			OrganisationPicker.ItemsSource = organisations;
+		}
+		catch (Exception ex)
+		{
+			Console.WriteLine(ex.Message);
+			DisplayAlert("Error", "Failed to load Organisations.", "OK");
+		}
+	}
+
+
+
+	private void OnRequestSelected(object sender, EventArgs e)
+	{
+		try
+		{
+			_currentRecords = specialistRequestService.GetAllSkillRequests();
+			SkillsRequestsListView.ItemsSource = _currentRecords;
+			populateRequestList();
+		}
+		catch (Exception ex)
+		{
+
+			DisplayAlert("Error", $"Failed to load records for Requests.", "OK");
+		}
+	}
+	private void RefreshRecordsList() => OnRequestSelected(null, EventArgs.Empty);
 }
\ No newline at end of file
diff --git a/Views/RequestSpecialists.xaml.cs b/Views/RequestSpecialists.xaml.cs
index 9677332..717995c 100644
--- a/Views/RequestSpecialists.xaml.cs
+++ b/Views/RequestSpecialists.xaml.cs
@@ -22,14 +22,24 @@ public RequestSpecialists()
 	private async void OnAddRecordClicked(object sender, EventArgs e)
 	{
 		var skillName = (string)SkillNamePicker.SelectedItem;
-		var numberRequired = Convert.ToInt32(NumberRequiredEntry.Text);
+		var numberRequired = 0;
+		try
+		{
+			numberRequired = Convert.ToInt32(NumberRequiredEntry.Text);
+		}
+		catch 
+		{
+			await DisplayAlert("Error", $"Failed to insert record into skills. Error: NumberRequired not a number", "OK");
+			NumberRequiredEntry.Text = "";
+			return;
+		}
 		var startDate = StartDatePicker.Date;
 		var endDate = EndDatePicker.Date;
 		if (CheckAddable(skillName, numberRequired))
 		{
 			try
 			{
-				specialistRequestService.AddSkillRequest(skillName, numberRequired,
+				specialistRequestService.AddUnapprovedSkillRequest(skillName, numberRequired,
 					startDate, endDate);
 				await DisplayAlert("Success", $"Successfully inserted record into skills.", "OK");
 			}

From 2a3f5df097bb717b7afa7d1718b685463f4f7389 Mon Sep 17 00:00:00 2001
From: Peter Stibitz <peter.stibitz@kabelmail.de>
Date: Mon, 30 Oct 2023 04:37:12 +0000
Subject: [PATCH 12/14] Documentation Comments

---
 Services/ISpecialistRequestService.cs  | 14 ++---
 Services/SpecialistRequestService.cs   |  4 +-
 Views/AcceptSpecialistRequests.xaml    |  2 +-
 Views/AcceptSpecialistRequests.xaml.cs | 77 ++++++++++++++++++++++----
 Views/RequestSpecialists.xaml          | 17 +-----
 Views/RequestSpecialists.xaml.cs       | 35 +++++++++++-
 6 files changed, 112 insertions(+), 37 deletions(-)

diff --git a/Services/ISpecialistRequestService.cs b/Services/ISpecialistRequestService.cs
index 9f2548f..ac96844 100644
--- a/Services/ISpecialistRequestService.cs
+++ b/Services/ISpecialistRequestService.cs
@@ -22,18 +22,18 @@ void AddUnapprovedSkillRequest(string skillName, int numberRequired,
 			DateTime startDate,DateTime endDate);
 
 		/// <summary>
-		/// Approve Request by assingning the date of approval,
-		/// changing the Status to Approved, and Assignig the Corresponding Organisation
+		/// Returns a list of SkillRequest objects by Calling a 
+		/// SELECT statement for skills_request
 		/// </summary>
-		/// <param name="id"></param>
-		/// <param name="organisationId"></param>
+		/// <returns>A list of SkillRequest objects, created from the database</returns>
 		List<SkillRequest> GetAllSkillRequests();
 
 		/// <summary>
-		/// Returns a list of SkillRequest objects by Calling a 
-		/// SELECT statement for skills_request
+		/// Approve Request by assingning the date of approval,
+		/// changing the Status to Approved, and Assignig the Corresponding Organisation
 		/// </summary>
-		/// <returns>A list of SkillRequest objects, created from the database</returns>
+		/// <param name="id">Id of Request</param>
+		/// <param name="organisationId">Id of Organisation</param>
 		void approveSkillRequest(int id, int organisationId);
 	}
 }
diff --git a/Services/SpecialistRequestService.cs b/Services/SpecialistRequestService.cs
index b74f262..659681a 100644
--- a/Services/SpecialistRequestService.cs
+++ b/Services/SpecialistRequestService.cs
@@ -72,8 +72,8 @@ void ISpecialistRequestService.AddUnapprovedSkillRequest(string skillName, int n
 		/// Approve Request by assingning the date of approval,
 		/// changing the Status to Approved, and Assignig the Corresponding Organisation
 		/// </summary>
-		/// <param name="id"></param>
-		/// <param name="organisationId"></param>
+		/// <param name="id">Id of Request</param>
+		/// <param name="organisationId">Id of Organisation</param>
 		void ISpecialistRequestService.approveSkillRequest(int id, int organisationId)
 		{
 			var currentDate = DateTime.Today;
diff --git a/Views/AcceptSpecialistRequests.xaml b/Views/AcceptSpecialistRequests.xaml
index c7ba9a8..88ba579 100644
--- a/Views/AcceptSpecialistRequests.xaml
+++ b/Views/AcceptSpecialistRequests.xaml
@@ -85,7 +85,7 @@
                                     </Label.FormattedText>
                                 </Label>
 
-                                <Button Text="Approve with my company" Clicked="OnButtonClick" BackgroundColor="#4CAF50" TextColor="White" CornerRadius="8"  />
+                                <Button Text="Approve with my company" Clicked="OnButtonClickApprove" BackgroundColor="#4CAF50" TextColor="White" CornerRadius="8"  />
                                 
                             </StackLayout>
                         </ViewCell>
diff --git a/Views/AcceptSpecialistRequests.xaml.cs b/Views/AcceptSpecialistRequests.xaml.cs
index 8fd155e..07724ef 100644
--- a/Views/AcceptSpecialistRequests.xaml.cs
+++ b/Views/AcceptSpecialistRequests.xaml.cs
@@ -3,12 +3,28 @@
 
 namespace MauiApp1.Views;
 
+/// <summary>
+/// Logic to Approving Specialist Requests.
+/// </summary>
 public partial class AcceptSpecialistRequests : ContentPage
 {
+	/// <summary>
+	/// database OperationService
+	/// </summary>
 	private readonly DatabaseOperations _dbOps;
+
+	/// <summary>
+	/// database Service for Specialist Requests 
+	/// </summary>
 	private ISpecialistRequestService specialistRequestService;
-	private List<SkillRequest> _currentRecords;
 
+	/// <summary>
+	/// List of SkillRequests
+	/// </summary>
+	private List<SkillRequest> _currentRecords;
+	/// <summary>
+	/// Constructor initialising Database Services and filling UI with values.
+	/// </summary>
 	public AcceptSpecialistRequests()
 	{
 		InitializeComponent();
@@ -19,6 +35,9 @@ public AcceptSpecialistRequests()
 		PopulateOrganisationPicker();
 	}
 
+	/// <summary>
+	/// Adds All Requests to list and to ListView.
+	/// </summary>
 	private async void populateRequestList()
 	{
 		try
@@ -33,16 +52,24 @@ private async void populateRequestList()
 		}
 	}
 
-
-	private async void OnButtonClick(object sender, EventArgs e)
+	/// <summary>
+	/// Approves Request when button is pushed.
+	/// </summary>
+	/// <param name="sender">Sender</param>
+	/// <param name="e">Event</param>
+	private async void OnButtonClickApprove(object sender, EventArgs e)
 	{
 		if (sender is Button button && button.BindingContext is SkillRequest item)
 		{
 			try
 			{
-				var OrganisationName = (string)OrganisationPicker.SelectedItem;
-				specialistRequestService.approveSkillRequest(item.Id, GetOrganisationId(OrganisationName));
-				await DisplayAlert("Success", $"Successfully inserted record into skills.", "OK");
+				var organisationName = (string)OrganisationPicker.SelectedItem;
+				var organisationId = GetOrganisationId(organisationName);
+				if (CheckUpdateable(item.Status, item.OrganisationId, organisationId))
+				{
+					specialistRequestService.approveSkillRequest(item.Id, organisationId);
+					await DisplayAlert("Success", $"Successfully inserted record into skills.", "OK");
+				}
 			}
 			catch (Exception ex)
 			{
@@ -50,16 +77,45 @@ private async void OnButtonClick(object sender, EventArgs e)
 				return;
 			}
 		}
-		RefreshRecordsList();
+		RefreshRequests();
 	}
 
+	/// <summary>
+	/// Checks whether it is possible to update value.
+	/// </summary>
+	/// <param name="status">Current Status</param>
+	/// <param name="currentOrganisationId">Current OrganisationID</param>
+	/// <param name="newOrganisationId">OrganisationID that should be entered</param>
+	/// <returns>bool whether Updateable</returns>
+	private bool CheckUpdateable(string status, int currentOrganisationId, int newOrganisationId)
+	{
+		if (status == "Approved")
+		{
+			DisplayAlert("Not Possible", "The Request already has been approved.", "OK");
+			return false;
+		}
+		if (newOrganisationId == currentOrganisationId)
+		{
+			DisplayAlert("Not Possible", "The Request already was approved by this Organisation.", "OK");
+			return false;
+		}
+		return true;
+	}
 
+	/// <summary>
+	/// Gets (first) Organisation ID by its name.
+	/// </summary>
+	/// <param name="name">Organisation Name</param>
+	/// <returns></returns>
 	private int GetOrganisationId(string name)
 	{
 		var result = _dbOps.GetRecordIdByName("organisation", name);
 		return result;
 	}
 
+	/// <summary>
+	/// Adds Values to OrganisationPicker.
+	/// </summary>
 	private void PopulateOrganisationPicker()
 	{
 		try
@@ -79,8 +135,10 @@ private void PopulateOrganisationPicker()
 	}
 
 
-
-	private void OnRequestSelected(object sender, EventArgs e)
+	/// <summary>
+	/// Refreshes the ListView of all Requests.
+	/// </summary>
+	private void RefreshRequests()
 	{
 		try
 		{
@@ -94,5 +152,4 @@ private void OnRequestSelected(object sender, EventArgs e)
 			DisplayAlert("Error", $"Failed to load records for Requests.", "OK");
 		}
 	}
-	private void RefreshRecordsList() => OnRequestSelected(null, EventArgs.Empty);
 }
\ No newline at end of file
diff --git a/Views/RequestSpecialists.xaml b/Views/RequestSpecialists.xaml
index 08d47d1..1224582 100644
--- a/Views/RequestSpecialists.xaml
+++ b/Views/RequestSpecialists.xaml
@@ -13,7 +13,7 @@
             <Label Text="Request Specialists" FontSize="26" FontAttributes="Bold" HorizontalOptions="CenterAndExpand" TextColor="White" />
             <Frame CornerRadius="10" Padding="20" BackgroundColor="#373737">
                 <VerticalStackLayout Spacing="15">
-                    
+
                     <Label Text="Select required skill:" FontSize="20" FontAttributes="Bold" TextColor="White" />
                     <Picker x:Name="SkillNamePicker" TextColor="White" BackgroundColor="#454545" 
                             />
@@ -29,26 +29,13 @@
                     <DatePicker x:Name="EndDatePicker" MinimumDate="{Binding Source={x:Reference StartDatePicker}}"
                                 TextColor="White" 
                                 BackgroundColor="#454545" />
-                    
+
                     <Button Text="Add Record" Clicked="OnAddRecordClicked" 
                             BackgroundColor="#4CAF50" 
                             TextColor="White" 
                             CornerRadius="8" />
                 </VerticalStackLayout>
             </Frame>
-
-            <ListView x:Name="RequestSpecialistsListView">
-                <ListView.ItemTemplate>
-                    <DataTemplate>
-                        <ViewCell>
-                            <StackLayout Orientation="Horizontal" Padding="10">
-                                <Label Text="{Binding Name}" VerticalOptions="CenterAndExpand" />
-                            </StackLayout>
-                        </ViewCell>
-                    </DataTemplate>
-                </ListView.ItemTemplate>
-            </ListView>
         </VerticalStackLayout>
-        
     </ScrollView>
 </ContentPage>
\ No newline at end of file
diff --git a/Views/RequestSpecialists.xaml.cs b/Views/RequestSpecialists.xaml.cs
index 717995c..c562d66 100644
--- a/Views/RequestSpecialists.xaml.cs
+++ b/Views/RequestSpecialists.xaml.cs
@@ -3,12 +3,24 @@
 
 namespace MauiApp1.Views;
 
+/// <summary>
+/// Logic to creating new Specialist Requests.
+/// </summary>
 public partial class RequestSpecialists : ContentPage
 {
+	/// <summary>
+	/// database OperationService.
+	/// </summary>
 	private readonly DatabaseOperations _dbOps;
+
+	/// <summary>
+	/// database Service for Specialist Requests .
+	/// </summary>
 	private ISpecialistRequestService specialistRequestService;
-	private DateTime selectedDate;
 
+	/// <summary>
+	/// Constructor initialising Database Services and filling UI with values.
+	/// </summary>
 	public RequestSpecialists()
 	{
 		InitializeComponent();
@@ -19,6 +31,12 @@ public RequestSpecialists()
 		PopulateSkillPicker();
 	}
 
+
+	/// <summary>
+	/// Creates new Request when button is pushed.
+	/// </summary>
+	/// <param name="sender">Button</param>
+	/// <param name="e">Event</param>
 	private async void OnAddRecordClicked(object sender, EventArgs e)
 	{
 		var skillName = (string)SkillNamePicker.SelectedItem;
@@ -51,6 +69,12 @@ private async void OnAddRecordClicked(object sender, EventArgs e)
 		}
 	}
 
+	/// <summary>
+	/// Checks whether something can be added or if there are missing vaues.
+	/// </summary>
+	/// <param name="skillName">SkillName</param>
+	/// <param name="numberRequired">Number of requird Persons</param>
+	/// <returns></returns>
 	private  bool CheckAddable(string skillName, int numberRequired)
 	{
 		if (_dbOps == null)
@@ -71,7 +95,9 @@ private  bool CheckAddable(string skillName, int numberRequired)
 		return true;
 	}
 
-
+	/// <summary>
+	/// Adds the skills to chose from to SkillPicker.
+	/// </summary>
 	private void PopulateSkillPicker()
 	{
 		try
@@ -90,6 +116,11 @@ private void PopulateSkillPicker()
 		}
 	}
 
+	/// <summary>
+	/// Always sets the Minimum of endDate to the current startDate.
+	/// </summary>
+	/// <param name="sender">Datepicker</param>
+	/// <param name="e">Event</param>
 	private void StartDatePicker_DateSelected(object sender, DateChangedEventArgs e)
 	{
 		EndDatePicker.MinimumDate = e.NewDate;

From 1ce9940ab4fe7ad9c495ce15a7f3f2f98bb87bf2 Mon Sep 17 00:00:00 2001
From: Peter Stibitz <peter.stibitz@kabelmail.de>
Date: Mon, 30 Oct 2023 04:44:32 +0000
Subject: [PATCH 13/14] Edited XAML

---
 Views/RequestSpecialists.xaml | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/Views/RequestSpecialists.xaml b/Views/RequestSpecialists.xaml
index 1224582..3e18222 100644
--- a/Views/RequestSpecialists.xaml
+++ b/Views/RequestSpecialists.xaml
@@ -15,17 +15,21 @@
                 <VerticalStackLayout Spacing="15">
 
                     <Label Text="Select required skill:" FontSize="20" FontAttributes="Bold" TextColor="White" />
-                    <Picker x:Name="SkillNamePicker" TextColor="White" BackgroundColor="#454545" 
-                            />
+                    <Picker x:Name="SkillNamePicker" TextColor="White" BackgroundColor="#454545" />
 
-                    <Entry Placeholder="Number Required" x:Name="NumberRequiredEntry" Keyboard="Numeric"
+                    <Label Text="Number of Personell Required:" FontSize="20" FontAttributes="Bold" TextColor="White" />
+                    <Entry Placeholder="Number of Personell Required" x:Name="NumberRequiredEntry" Keyboard="Numeric"
                            TextColor="White" 
                            PlaceholderColor="#aaa" 
                            BackgroundColor="#454545" />
+
+                    <Label Text="Start Date:" FontSize="20" FontAttributes="Bold" TextColor="White" />
                     <DatePicker x:Name="StartDatePicker" MinimumDate="{x:Static sys:DateTime.Today}"
                                 DateSelected="StartDatePicker_DateSelected"
                                 TextColor="White" 
                                 BackgroundColor="#454545" />
+
+                    <Label Text="End Date:" FontSize="20" FontAttributes="Bold" TextColor="White" />
                     <DatePicker x:Name="EndDatePicker" MinimumDate="{Binding Source={x:Reference StartDatePicker}}"
                                 TextColor="White" 
                                 BackgroundColor="#454545" />

From b694e8da602e877ef6537ad410ad998326ac845d Mon Sep 17 00:00:00 2001
From: Peter Stibitz <peter.stibitz@kabelmail.de>
Date: Tue, 31 Oct 2023 10:31:41 +0000
Subject: [PATCH 14/14] added delete Button

---
 Services/ISpecialistRequestService.cs  |  2 ++
 Services/SpecialistRequestService.cs   | 11 ++++++++-
 Views/AcceptSpecialistRequests.xaml    |  5 +++--
 Views/AcceptSpecialistRequests.xaml.cs | 31 +++++++++++++++++++++++++-
 Views/RequestSpecialists.xaml          |  8 ++++---
 5 files changed, 50 insertions(+), 7 deletions(-)

diff --git a/Services/ISpecialistRequestService.cs b/Services/ISpecialistRequestService.cs
index ac96844..7b8ec66 100644
--- a/Services/ISpecialistRequestService.cs
+++ b/Services/ISpecialistRequestService.cs
@@ -35,5 +35,7 @@ void AddUnapprovedSkillRequest(string skillName, int numberRequired,
 		/// <param name="id">Id of Request</param>
 		/// <param name="organisationId">Id of Organisation</param>
 		void approveSkillRequest(int id, int organisationId);
+
+		void deleteSkillRequestById(int id);
 	}
 }
diff --git a/Services/SpecialistRequestService.cs b/Services/SpecialistRequestService.cs
index 659681a..2a124db 100644
--- a/Services/SpecialistRequestService.cs
+++ b/Services/SpecialistRequestService.cs
@@ -111,10 +111,19 @@ List<SkillRequest> ISpecialistRequestService.GetAllSkillRequests()
 					skillRequests.Add(skillRequest);
 				}
 			}
-
 			return skillRequests;
 		}
 
+		void ISpecialistRequestService.deleteSkillRequestById(int id)
+		{
+			var commandText = $"DELETE FROM skills_request WHERE Id = @id";
+			using (var command = new SqliteCommand(commandText, _connection))
+			{
+				command.Parameters.AddWithValue("@id", id);
+
+				command.ExecuteNonQuery();
+			}
+		}
 		/// <summary>
 		/// Creates one SkillRequest object by transfering 
 		/// data from the reader.
diff --git a/Views/AcceptSpecialistRequests.xaml b/Views/AcceptSpecialistRequests.xaml
index 88ba579..0f734c8 100644
--- a/Views/AcceptSpecialistRequests.xaml
+++ b/Views/AcceptSpecialistRequests.xaml
@@ -11,6 +11,7 @@
                 <VerticalStackLayout Spacing="15">
                     <Label Text="Select your Organisation:" FontSize="20" FontAttributes="Bold" TextColor="White" />
                     <Picker x:Name="OrganisationPicker" TextColor="White" BackgroundColor="#454545" />
+                    <Button Text="Reload" Clicked="UpdatePage" BackgroundColor="#454545" TextColor="White" CornerRadius="8"  />
                 </VerticalStackLayout>
             </Frame>
             <ListView x:Name="SkillsRequestsListView" BackgroundColor="#373737" SeparatorColor="Gray">
@@ -85,8 +86,8 @@
                                     </Label.FormattedText>
                                 </Label>
 
-                                <Button Text="Approve with my company" Clicked="OnButtonClickApprove" BackgroundColor="#4CAF50" TextColor="White" CornerRadius="8"  />
-                                
+                                <Button Text="Approve with my company" Clicked="OnButtonClickedApprove" BackgroundColor="#4CAF50" TextColor="White" CornerRadius="8"  />
+                                <Button Text="Remove Request" Clicked="OnButtonClickedDelete" BackgroundColor="#F44336" TextColor="White" CornerRadius="8" />
                             </StackLayout>
                         </ViewCell>
                     </DataTemplate>
diff --git a/Views/AcceptSpecialistRequests.xaml.cs b/Views/AcceptSpecialistRequests.xaml.cs
index 07724ef..1aee3a8 100644
--- a/Views/AcceptSpecialistRequests.xaml.cs
+++ b/Views/AcceptSpecialistRequests.xaml.cs
@@ -33,6 +33,7 @@ public AcceptSpecialistRequests()
 		specialistRequestService = new SpecialistRequestService($"Data Source={Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "reference_values.sqlite")}");
 		populateRequestList();
 		PopulateOrganisationPicker();
+		RefreshRequests();
 	}
 
 	/// <summary>
@@ -57,7 +58,7 @@ private async void populateRequestList()
 	/// </summary>
 	/// <param name="sender">Sender</param>
 	/// <param name="e">Event</param>
-	private async void OnButtonClickApprove(object sender, EventArgs e)
+	private async void OnButtonClickedApprove(object sender, EventArgs e)
 	{
 		if (sender is Button button && button.BindingContext is SkillRequest item)
 		{
@@ -80,6 +81,29 @@ private async void OnButtonClickApprove(object sender, EventArgs e)
 		RefreshRequests();
 	}
 
+
+	/// <summary>
+	/// Removes Request when button is pushed.
+	/// </summary>
+	/// <param name="sender">Sender</param>
+	/// <param name="e">Event</param>
+	private async void OnButtonClickedDelete(object sender, EventArgs e)
+	{
+		if (sender is Button button && button.BindingContext is SkillRequest item)
+		{
+			try
+			{
+				specialistRequestService.deleteSkillRequestById(item.Id);
+			}
+			catch (Exception ex)
+			{
+				await DisplayAlert("Error", $"Failed to remove Request. Error: {ex.Message}", "OK");
+				return;
+			}
+		}
+		RefreshRequests();
+	}
+
 	/// <summary>
 	/// Checks whether it is possible to update value.
 	/// </summary>
@@ -135,6 +159,11 @@ private void PopulateOrganisationPicker()
 	}
 
 
+	private async void UpdatePage(object sender, EventArgs e)
+	{
+		RefreshRequests();
+	}
+
 	/// <summary>
 	/// Refreshes the ListView of all Requests.
 	/// </summary>
diff --git a/Views/RequestSpecialists.xaml b/Views/RequestSpecialists.xaml
index 3e18222..6a3ba59 100644
--- a/Views/RequestSpecialists.xaml
+++ b/Views/RequestSpecialists.xaml
@@ -30,9 +30,11 @@
                                 BackgroundColor="#454545" />
 
                     <Label Text="End Date:" FontSize="20" FontAttributes="Bold" TextColor="White" />
-                    <DatePicker x:Name="EndDatePicker" MinimumDate="{Binding Source={x:Reference StartDatePicker}}"
-                                TextColor="White" 
-                                BackgroundColor="#454545" />
+					<DatePicker x:Name="EndDatePicker"
+								MinimumDate="{Binding Source={x:Reference StartDatePicker}, 
+                                Converter={StaticResource DateTimeConverter}}"
+								TextColor="White"
+								BackgroundColor="#454545" />
 
                     <Button Text="Add Record" Clicked="OnAddRecordClicked" 
                             BackgroundColor="#4CAF50"