From 2b0b0947312f1ed5231bb1413aeec81f8f927014 Mon Sep 17 00:00:00 2001
From: Pilzinsel64 <pascal.schedel@dr-schneider.com>
Date: Thu, 12 Dec 2024 07:25:18 +0100
Subject: [PATCH] basic sub-client implementation

---
 Pilz.Net/Api/ApiClient.cs     | 18 ++++++++++++++++++
 Pilz.Net/Api/IApiSubClient.cs |  6 ++++++
 2 files changed, 24 insertions(+)
 create mode 100644 Pilz.Net/Api/IApiSubClient.cs

diff --git a/Pilz.Net/Api/ApiClient.cs b/Pilz.Net/Api/ApiClient.cs
index 6d88460..d4cce38 100644
--- a/Pilz.Net/Api/ApiClient.cs
+++ b/Pilz.Net/Api/ApiClient.cs
@@ -8,6 +8,7 @@ namespace Pilz.Net.Api;
 public class ApiClient(string apiUrl) : IApiClient
 {
     protected readonly HttpClient httpClient = new();
+    protected readonly List<object> clients = [];
 
     public virtual string ApiUrl { get; } = apiUrl;
 
@@ -17,6 +18,23 @@ public class ApiClient(string apiUrl) : IApiClient
 
     public ILogger Log { get; set; } = NullLogger.Instance;
 
+    public T GetClient<T>() where T : IApiSubClient
+    {
+        foreach (var c in clients)
+        {
+            if (c is T t)
+                return t;
+        }
+
+        if (T.CreateClient<T>(this) is T client)
+        {
+            clients.Add(client);
+            return client;
+        }
+
+        throw new ApiException("Could not create an instance of this client.");
+    }
+
     public virtual async Task<ApiResponse> SendRequest(string route, HttpMethod method, ApiMessage? message, ApiParameterCollection? @params, IApiMessageSerializer? serializer)
     {
         serializer ??= Serializer;
diff --git a/Pilz.Net/Api/IApiSubClient.cs b/Pilz.Net/Api/IApiSubClient.cs
new file mode 100644
index 0000000..3e9f2a7
--- /dev/null
+++ b/Pilz.Net/Api/IApiSubClient.cs
@@ -0,0 +1,6 @@
+namespace Pilz.Net.Api;
+
+public interface IApiSubClient
+{
+    internal protected static abstract T? CreateClient<T>(IApiClient client) where T : IApiSubClient;
+}