Launcher info links. (#12781)

Content.Server/ServerInfo/ServerInfoManager.cs

@@ -0,0 +1,44 @@
+using System.Text.Json.Nodes;
+using Content.Shared.CCVar;
+using Robust.Server.ServerStatus;
+using Robust.Shared.Configuration;
+
+namespace Content.Server.ServerInfo;
+
+/// <summary>
+/// Adds additional data like info links to the server info endpoint
+/// </summary>
+public sealed class ServerInfoManager
+{
+    private static readonly (CVarDef<string> cVar, string icon, string name)[] Vars =
+    {
+        // @formatter:off
+        (CCVars.InfoLinksDiscord, "discord", "info-link-discord"),
+        (CCVars.InfoLinksForum,   "forum",   "info-link-forum"),
+        (CCVars.InfoLinksGithub,  "github",  "info-link-github"),
+        (CCVars.InfoLinksWebsite, "web",     "info-link-website"),
+        (CCVars.InfoLinksWiki,    "wiki",    "info-link-wiki")
+        // @formatter:on
+    };
+
+    [Dependency] private readonly IStatusHost _statusHost = default!;
+    [Dependency] private readonly IConfigurationManager _cfg = default!;
+    [Dependency] private readonly ILocalizationManager _loc = default!;
+
+    public void Initialize()
+    {
+        _statusHost.OnInfoRequest += OnInfoRequest;
+    }
+
+    private void OnInfoRequest(JsonNode json)
+    {
+        foreach (var (cVar, icon, name) in Vars)
+        {
+            var url = _cfg.GetCVar(cVar);
+            if (string.IsNullOrEmpty(url))
+                continue;
+
+            StatusHostHelpers.AddLink(json, _loc.GetString(name), url, icon);
+        }
+    }
+}