Initial API setup and basic program functioning

Emergence.services/Emergence.services.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="10.0.5" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Emergence.models\Emergence.models.csproj" />
+  </ItemGroup>
+
+</Project>

Emergence.services/Extensions/ServiceBuilderExtension.cs

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+using Emergence.services.Interface;
+using Emergence.services.Services;
+using Microsoft.Extensions.DependencyInjection;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Emergence.services.Extensions
+{
+    public static class ServiceBuilderExtension
+    {
+        public static IServiceCollection AddServices(this IServiceCollection services)
+        {
+            services = services.AddTransient<IUserService, UserService>();
+
+            return services;
+        }
+    }
+}

Emergence.services/Interface/IService.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Emergence.services.Interface
+{
+    public interface IService<T> where T : class
+    {
+        public Task<IList<T>> GetAllAsync();
+        public Task<T> GetByIdAsync(int id);
+    }
+}

Emergence.services/Interface/IUserService.cs

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+using Emergence.models;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Emergence.services.Interface
+{
+    public interface IUserService : IService<UserModel>
+    {
+    }
+}

Emergence.services/Services/UserService.cs

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+using Emergence.models;
+using Emergence.services.Interface;
+
+namespace Emergence.services.Services;
+
+public class UserService : IUserService
+{
+    private List<UserModel> testList = [
+            new UserModel {Id = 1, Username = "chris", Email ="chris@fjp.com.au" },
+            new UserModel {Id = 2, Username = "kim", Email ="kim@fjp.com.au" },
+            new UserModel {Id = 3, Username = "amanda", Email ="amanda@fjp.com.au" },
+            new UserModel {Id = 4, Username = "reception", Email ="reception@fjp.com.au" },
+            ];
+
+    public async Task<IList<UserModel>> GetAllAsync()
+    {
+        return testList;
+    }
+
+    public async Task<UserModel> GetByIdAsync(int id)
+    {
+#pragma warning disable CS8603 // Possible null reference return.
+        return testList.FirstOrDefault(f => f.Id == id);
+#pragma warning restore CS8603 // Possible null reference return.
+    }
+}