feat(lmxproxy): phase 6 — client extras (builder, factory, DI, streaming extensions)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lmxproxy/src/ZB.MOM.WW.LmxProxy.Client/ServiceCollectionExtensions.cs

@@ -0,0 +1,71 @@
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace ZB.MOM.WW.LmxProxy.Client;
+
+/// <summary>
+/// Extension methods for registering LmxProxy client services in the DI container.
+/// </summary>
+public static class ServiceCollectionExtensions
+{
+    /// <summary>Registers a singleton ILmxProxyClient from the "LmxProxy" config section.</summary>
+    public static IServiceCollection AddLmxProxyClient(
+        this IServiceCollection services, IConfiguration configuration)
+    {
+        return services.AddLmxProxyClient(configuration, "LmxProxy");
+    }
+
+    /// <summary>Registers a singleton ILmxProxyClient from a named config section.</summary>
+    public static IServiceCollection AddLmxProxyClient(
+        this IServiceCollection services, IConfiguration configuration, string sectionName)
+    {
+        services.AddSingleton<ILmxProxyClientFactory>(
+            sp => new LmxProxyClientFactory(configuration));
+        services.AddSingleton<ILmxProxyClient>(sp =>
+        {
+            var factory = sp.GetRequiredService<ILmxProxyClientFactory>();
+            return factory.CreateClient(sectionName);
+        });
+        return services;
+    }
+
+    /// <summary>Registers a singleton ILmxProxyClient via builder action.</summary>
+    public static IServiceCollection AddLmxProxyClient(
+        this IServiceCollection services, Action<LmxProxyClientBuilder> configure)
+    {
+        services.AddSingleton<ILmxProxyClient>(sp =>
+        {
+            var builder = new LmxProxyClientBuilder();
+            configure(builder);
+            return builder.Build();
+        });
+        return services;
+    }
+
+    /// <summary>Registers a scoped ILmxProxyClient from the "LmxProxy" config section.</summary>
+    public static IServiceCollection AddScopedLmxProxyClient(
+        this IServiceCollection services, IConfiguration configuration)
+    {
+        services.AddSingleton<ILmxProxyClientFactory>(
+            sp => new LmxProxyClientFactory(configuration));
+        services.AddScoped<ILmxProxyClient>(sp =>
+        {
+            var factory = sp.GetRequiredService<ILmxProxyClientFactory>();
+            return factory.CreateClient();
+        });
+        return services;
+    }
+
+    /// <summary>Registers a keyed singleton ILmxProxyClient.</summary>
+    public static IServiceCollection AddNamedLmxProxyClient(
+        this IServiceCollection services, string name, Action<LmxProxyClientBuilder> configure)
+    {
+        services.AddKeyedSingleton<ILmxProxyClient>(name, (sp, key) =>
+        {
+            var builder = new LmxProxyClientBuilder();
+            configure(builder);
+            return builder.Build();
+        });
+        return services;
+    }
+}