Add example project using library with dependency injection.

Author: CodingFlow

Examples/Examples.DependencyInjection/AnimalProcessorInput.cs

@@ -0,0 +1,8 @@
+namespace Examples.DependencyInjection;
+
+public class AnimalProcessorInput
+{
+    public required string Animal { get; set; }
+    public required string Color { get; set; }
+    public required int Height { get; set; }
+}

Examples/Examples.DependencyInjection/CatsOnlyProcessor.cs

@@ -0,0 +1,10 @@
+namespace Examples.DependencyInjection;
+
+public class CatsOnlyProcessor : IAnimalProcessor
+{
+    public bool Condition(AnimalProcessorInput input) => input.Animal == "cat";
+
+    public string Process(AnimalProcessorInput input) {
+        return "animal is a cat!";
+    }
+}

Examples/Examples.DependencyInjection/DefaultProcessor.cs

@@ -0,0 +1,10 @@
+namespace Examples.DependencyInjection;
+
+public class DefaultProcessor : IAnimalProcessor
+{
+    public bool Condition(AnimalProcessorInput input) => true;
+
+    public string Process(AnimalProcessorInput input) {
+        return "it is an animal";
+    }
+}

Examples/Examples.DependencyInjection/Examples.DependencyInjection.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <PublishAot>True</PublishAot>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\LightChain\LightChain.csproj" />
+  </ItemGroup>
+
+</Project>

Examples/Examples.DependencyInjection/IAnimalProcessor.cs

@@ -0,0 +1,7 @@
+using LightChain;
+
+namespace Examples.DependencyInjection;
+
+public interface IAnimalProcessor : IProcessor<AnimalProcessorInput, string>
+{
+}

Examples/Examples.DependencyInjection/Main.cs

@@ -0,0 +1,25 @@
+using LightChain;
+
+namespace Examples.DependencyInjection;
+
+public class Main
+{
+    private readonly IChain<AnimalProcessorInput, string> animalProcessor;
+
+    public Main(IChain<AnimalProcessorInput, string> animalProcessor) {
+        this.animalProcessor = animalProcessor;
+    }
+
+    public string Run() {
+        var input = new AnimalProcessorInput
+        {
+            Animal = "dog",
+            Color = "red",
+            Height = 100,
+        };
+
+        var result = animalProcessor.Run(input);
+
+        return result;
+    }
+}

Examples/Examples.DependencyInjection/Program.cs

@@ -0,0 +1,8 @@
+// See https://aka.ms/new-console-template for more information
+using Examples.DependencyInjection;
+
+Console.WriteLine("Starting App...");
+
+var result = new Startup().Run();
+
+Console.WriteLine($"Result is: {result}");

Examples/Examples.DependencyInjection/RedOnlyProcessor .cs

@@ -0,0 +1,10 @@
+namespace Examples.DependencyInjection;
+
+public class RedOnlyProcessor : IAnimalProcessor
+{
+    public bool Condition(AnimalProcessorInput input) => input.Color == "red";
+
+    public string Process(AnimalProcessorInput input) {
+        return "animal is red!";
+    }
+}

Examples/Examples.DependencyInjection/ServiceRegistrations.cs

@@ -0,0 +1,18 @@
+using LightChain;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Examples.DependencyInjection;
+
+internal static class ServiceRegistrations
+{
+    public static void AddServices(this IServiceCollection services) {
+        services.AddTransient<IAnimalProcessor, CatsOnlyProcessor>();
+        services.AddTransient<IAnimalProcessor, RedOnlyProcessor>();
+        services.AddTransient<IAnimalProcessor, DefaultProcessor>();
+
+        services.AddTransient<IChain<AnimalProcessorInput, string>, Chain<IAnimalProcessor, AnimalProcessorInput, string>>();
+
+        services.AddTransient<Main>();
+    }
+}
+

Examples/Examples.DependencyInjection/StartUp.cs

@@ -0,0 +1,31 @@
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+
+namespace Examples.DependencyInjection;
+
+public class Startup
+{
+    public string Run() {
+        Main main;
+
+        using (
+            var host = CreateHostBuilder().Build()
+        ) {
+            using var scope = host.Services.CreateScope();
+            var services = scope.ServiceProvider;
+
+            main = services.GetRequiredService<Main>();
+        }
+
+        var result = main.Run();
+
+        return result;
+    }
+
+    private static IHostBuilder CreateHostBuilder() {
+        return Host.CreateDefaultBuilder()
+            .ConfigureServices((_, services) => {
+                services.AddServices();
+            });
+    }
+}