[MTGOSDK/API] Add ServerStatus class

Create a helper class for querying MTGO server status.

MTGOSDK/MTGOSDK.csproj

@@ -29,6 +29,8 @@
   <ItemGroup>
     <PackageReference Include="ImpromptuInterface"
                       Version="8.0.4" />
+    <PackageReference Include="Newtonsoft.Json"
+                      Version="13.0.3" />
     <ProjectReference Include="..\MTGOSDK.Win32\MTGOSDK.Win32.csproj" />
     <ProjectReference Include="..\third_party\RemoteNET\src\RemoteNET\RemoteNET.csproj" />
     <ProjectReference Include="..\third_party\RemoteNET\src\ScubaDiver.API\ScubaDiver.API.csproj" />

MTGOSDK/src/API/ServerStatus.cs

@@ -0,0 +1,47 @@
+/** @file
+  Copyright (c) 2023, Cory Bennett. All rights reserved.
+  SPDX-License-Identifier: Apache-2.0
+**/
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Http;
+using System.Threading.Tasks;
+
+using Newtonsoft.Json.Linq;
+
+
+namespace MTGOSDK.API;
+
+/// <summary>
+/// Check the status of the MTGO servers.
+/// </summary>
+public static class ServerStatus
+{
+  /// <summary>
+  /// Check if the MTGO servers are online.
+  /// </summary>
+  public static async Task<bool> IsOnline()
+  {
+    using (HttpClient client = new HttpClient())
+    {
+      string url = "https://census.daybreakgames.com/s:dgc/get/global/game_server_status?game_code=mtgo&c:limit=1000";
+      using var response = await client.GetAsync(url);
+
+      if (!response.IsSuccessStatusCode)
+        throw new Exception("Failed to fetch server status");
+
+      using var content = response.Content;
+      var json = JObject.Parse(await content.ReadAsStringAsync());
+
+      if (json["returned"].ToObject<int>() == 0)
+        throw new Exception("No servers found");
+
+      // Check if any servers are online.
+      IList<string> statuses = [ "high", "medium", "low" ];
+      return json["game_server_status_list"].Any(s =>
+          statuses.Contains(s["last_reported_state"].ToObject<string>()));
+    }
+  }
+}