Implement ServerStatus with rapidjson

src/ServerStatus.h

@@ -1,15 +1,18 @@
 #pragma once
 
-#include <string>
-#include <sstream>
+#include "rapidjson/document.h"
+#include "rapidjson/writer.h"
+#include "rapidjson/stringbuffer.h"
 
-using string = std::string;
-using stringstream = std::stringstream;
+#include <string>
 
 namespace Feather
 {
     class ServerStatus
     {
+        using string = std::string;
+        string cachedJSON;
+
     public:
         // Version
         string versionName = "1.16.1";
@@ -22,17 +25,51 @@ namespace Feather
         // Description
         string descriptionText = "";
 
-        string GetServerStatusJSON()
+        const string &GetServerStatusJSON(bool forceUpdate = false)
         {
-            // TODO: PLACEHOLDER for real JSON
-            stringstream j;
-            j << "{";
-            j << "\"version\":{\"name\":\"" << versionName << "\",\"protocol\":" << protocol << "},";
-            j << "\"players\":{\"max\":" << maxPlayers << ",\"online\":" << numPlayers << ",\"sample\":[]},";
-            j << "\"description\": {\"text\":\"" << descriptionText << "\"}";
-            j << "}";
+            using namespace rapidjson;
 
-            return j.str();
+            if (cachedJSON.length() > 0 && !forceUpdate) return cachedJSON;
+
+            Document doc;
+            doc.SetObject();
+
+            auto &alloc = doc.GetAllocator();
+
+            Value version(kObjectType);
+            {
+                Value name;
+                name.SetString(versionName.c_str(), versionName.length());
+                version.AddMember("name", name, alloc);
+                version.AddMember("protocol", protocol, alloc);
+            }
+            doc.AddMember("version", version, alloc);
+
+            Value players(kObjectType);
+            {
+                players.AddMember("max", maxPlayers, alloc);
+                players.AddMember("online", numPlayers, alloc);
+                Value sample(kArrayType);
+                players.AddMember("sample", sample, alloc);
+            }
+            doc.AddMember("players", players, alloc);
+
+            // TODO: use chat object
+            Value description(kObjectType);
+            {
+                Value text;
+                text.SetString(descriptionText.c_str(), descriptionText.length());
+                description.AddMember("text", text, alloc);
+            }
+            doc.AddMember("description", description, alloc);
+
+            StringBuffer buf;
+            Writer<StringBuffer> writer(buf);
+            doc.Accept(writer);
+
+            cachedJSON.assign(buf.GetString(), buf.GetLength());
+
+            return cachedJSON;
         }
     };
 }