Start: Demo application

Author: martinzimmermann

.gitignore

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+MIT License
+
+Copyright (c) 2025 Martin Zimmermann
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

LICENSE

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+# DevOpsDays Graz 2025 Sample Application
+This is the companion repository for the workshop "Modern Delivery for Not-so-modern Software" on the DevOpsDays Graz 2025.
+
+## Repository Structure
+The `main` branch contains the start of the workshop on which the participant should work while following along the workshop.
+
+The `workshop-steps` branch will contain the results of the steps in the workshop as separate git commits and can be used as a reference.
+
+## Sample Application
+The sample application is a simple ToDo List application. However, there are a few things that that make it hard to build: copying files, manually entering version numbers, manual signing, etc.
+
+In the workshop we will take the application and modernize its delivery step by step.
+
+## Folder Structure
+* `data/`: contains the file `default-tasks.xml`, which is a dev fallback for the template engine
+* `scripts/`: contains the signing script (only works on windows)
+* `src/`: source code of the application
+  * `DevOpsDaysTasks.Core/`: models, services and database access of the app
+  * `DevOpsDaysTasks.Core.Tests/`: tests for models and services
+  * `DevOpsDaysTasks.IntegrationTests/`: tests that actually query a database
+  * `DevOpsDaysTasks.UI/`: UI and main application
+* `workshop_material/`: additional material for participants, e.g., the file that should be copied with a release
+  * `release_steps.md`: instruction on how to perform a manual release
+
+## How to Start the Application
+⚠️ This application requires .NET 8 SDK or later
+
+Run `dotnet run --project .\src\DevOpsDaysTasks.UI\`.
+
+### Switching between MSSQL and SQLite
+By default the application uses localDB. For cross-platform compatibility also a SQLite adapter is implemented. Replace `DbKind.SqlServer` with `DbKind.Sqlite` in `MainWindow.axaml.cs` and `MSSQLFixture.cs` to use SQLite.

README.md

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+<Tasks>
+  <Task Title="Prepare Demo Application" Done="false" />
+  <Task Title="Prepare slides" Done="false" />
+</Tasks>

data/templates/default-tasks.xml

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+param(
+    [Parameter(Mandatory)][String]$ExeFile,
+    [Parameter(Mandatory)][String]$PfxFile,
+    [Parameter(Mandatory)][String]$PfxPassword
+)
+$signtool = "C:\Program Files (x86)\Microsoft SDKs\ClickOnce\SignTool\signtool.exe"
+
+# Sign the .exe
+$exe = Get-ChildItem $ExeFile | Select-Object -First 1
+& $signtool sign `
+  /fd SHA256 `
+  /f $PfxFile `
+  /p $PfxPassword `
+  /tr http://timestamp.digicert.com `
+  /td SHA256 `
+  $exe.FullName
+
+# Verify
+Get-AuthenticodeSignature $exe.FullName | Format-List

scripts/sign.ps1

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+
+    <IsPackable>false</IsPackable>
+    <IsTestProject>true</IsTestProject>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="xunit" Version="2.5.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\DevOpsDaysTasks.Core\DevOpsDaysTasks.Core.csproj" />
+  </ItemGroup>
+
+</Project>

src/DevOpsDaysTasks.Core.Tests/DevOpsDaysTasks.Core.Tests.csproj

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+using DevOpsDaysTasks.Core.Services;
+using System.Text;
+
+namespace DevOpsDaysTasks.Core.Tests;
+
+public class TemplateLoaderTests
+{
+    [Fact]
+    public void LoadDefaultTasks_Parses_Title_And_Done()
+    {
+        // Arrange
+        var xml = """
+<Tasks>
+  <Task Title=" Buy groceries " Done="true"/>
+  <Task Title="Prepare slides" Done="0"/>
+</Tasks>
+""";
+        var stream = new MemoryStream(Encoding.UTF8.GetBytes(xml));
+
+        // Act
+        var tasks = TemplateLoader.LoadDefaultTasks(stream);
+
+        // Assert
+        Assert.Equal(2, tasks.Count);
+        Assert.Equal("Buy groceries", tasks[0].Title);   // trimmed
+        Assert.True(tasks[0].IsDone);                    // "true" -> true
+        Assert.False(tasks[1].IsDone);                   // "0" -> false
+    }
+
+    [Fact]
+    public void LoadDefaultTasks_Skips_Empty_Titles()
+    {
+        var xml = """
+<Tasks>
+  <Task Title="  " Done="true"/>
+  <Task Done="true"><Title></Title></Task>
+  <Task Title="Valid" Done="false"/>
+</Tasks>
+""";
+        var stream = new MemoryStream(Encoding.UTF8.GetBytes(xml));
+
+        // Act
+        var tasks = TemplateLoader.LoadDefaultTasks(stream);
+
+        Assert.Single(tasks); // Tasks without Title or an empty Tilte are skipped
+        Assert.Equal("Valid", tasks[0].Title);
+    }
+}

src/DevOpsDaysTasks.Core.Tests/TemplateLoaderTests.cs

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+using System;
+
+namespace DevOpsDaysTasks.Core.Attributes
+{
+    [AttributeUsage(AttributeTargets.Assembly, Inherited = false, AllowMultiple = false)]
+    public sealed class VersionNameAttribute : Attribute
+    {
+        public string VersionName { get; }
+        public VersionNameAttribute(string versionName)
+        {
+            VersionName = versionName;
+        }
+    }
+}

src/DevOpsDaysTasks.Core/Attributes/VersionNameAttribute.cs

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Data.SqlClient" Version="6.1.1" />
+    <PackageReference Include="Microsoft.Data.Sqlite" Version="8.*" />
+  </ItemGroup>
+
+</Project>

src/DevOpsDaysTasks.Core/DevOpsDaysTasks.Core.csproj

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+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+
+namespace DevOpsDaysTasks.Core.Models;
+
+public class TaskItem : INotifyPropertyChanged
+{
+
+    private string _title = string.Empty;
+    private bool _isDone;
+
+    public int Id { get; set; }
+
+    public string Title
+    {
+        get => _title;
+        set { if (_title != value) { _title = value; OnPropertyChanged(); } }
+    }
+
+    public bool IsDone
+    {
+        get => _isDone;
+        set { if (_isDone != value) { _isDone = value; OnPropertyChanged(); } }
+    }
+
+    public event PropertyChangedEventHandler? PropertyChanged;
+    private void OnPropertyChanged([CallerMemberName] string? prop = null)
+        => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(prop));
+}