Implemented "roundtrip" status checking. Added node ssl field.

MoonlightServers.ApiServer/Services/NodeService.cs

@@ -0,0 +1,52 @@
+using MoonCore.Attributes;
+using MoonCore.Helpers;
+using MoonlightServers.ApiServer.Database.Entities;
+using MoonlightServers.DaemonShared.Http.Responses.Sys;
+
+namespace MoonlightServers.ApiServer.Services;
+
+[Singleton]
+public class NodeService
+{
+    public async Task<HttpApiClient> CreateApiClient(Node node)
+    {
+        string url = "";
+
+        if (node.UseSsl)
+            url += "https://";
+        else
+            url += "http://";
+
+        url += $"{node.Fqdn}:{node.HttpPort}/";
+        
+        var httpClient = new HttpClient()
+        {
+            BaseAddress = new Uri(url)
+        };
+        
+        httpClient.DefaultRequestHeaders.Add("Authorization", $"Bearer {node.Token}");
+
+        return new HttpApiClient(httpClient);
+    }
+
+    public async Task<SystemInfoResponse> GetSystemInfo(Node node)
+    {
+        using var apiClient = await CreateApiClient(node);
+
+        return await apiClient.GetJson<SystemInfoResponse>("api/system/info");
+    }
+    
+    public async Task<SystemStatusResponse> GetSystemStatus(Node node)
+    {
+        using var apiClient = await CreateApiClient(node);
+
+        return await apiClient.GetJson<SystemStatusResponse>("api/system/status");
+    }
+
+    public async Task<SystemDataUsageResponse> GetSystemDataUsage(Node node)
+    {
+        using var apiClient = await CreateApiClient(node);
+
+        return await apiClient.GetJson<SystemDataUsageResponse>("api/system/dataUsage");
+    }
+}