Refactor chat system: Introduce ChatRoom and ChatUser classes

- Created ChatRoom class to manage chat room functionalities, including user management, message handling, and game mechanics.
- Developed ChatUser class to represent individual users, handling user-specific actions and interactions within chat rooms.
- Implemented a Config class for loading configuration settings from a JSON file.
- Established a Server class to manage connections, handle requests, and facilitate communication between users and chat rooms.
- Introduced a Database class for database interactions, utilizing PostgreSQL for user and room data management.
- Added utility functions in the Base class for JSON handling and socket communication.
- Created Object classes for Room and User to encapsulate their properties and behaviors.
- Updated main function to initialize server and load chat rooms from configuration.

src/lib/base.cpp

@@ -0,0 +1,53 @@
+#include "base.h"
+
+#include <sstream>
+#include <strings.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <memory>
+#include <iostream>
+
+namespace Yc {
+    namespace Lib {
+
+        std::string Base::getJsonString(Json::Value json) {
+            std::string outString;
+            std::stringstream outStream;
+            outStream << json;
+            return outStream.str();
+        }
+
+        void Base::send(int socket, std::string out) {
+            write(socket, out.c_str(), out.length());
+        }
+
+        void Base::send(int socket, Json::Value out) {
+            std::string outString = getJsonString(out);
+            send(socket, outString);
+        }
+
+        std::string Base::readSocket(int socket)
+        {
+            std::string msg("");
+            char buffer[256];
+            bzero(buffer, 256);
+            while (int received = recv(socket, buffer, 255, 0) > 0) {
+                msg += std::string(buffer);
+                if (received < 255) {
+                    break;
+                }
+            }
+            return msg;
+        }
+
+        Json::Value Base::getJsonTree(std::string msg) {
+            Json::Value inputTree;
+            Json::CharReaderBuilder rbuilder;
+            std::unique_ptr<Json::CharReader> const reader(rbuilder.newCharReader());
+            JSONCPP_STRING inputJsonString(msg);
+            reader->parse(inputJsonString.data(), inputJsonString.data() + inputJsonString.size(), &inputTree, NULL);
+            return inputTree;
+        }
+
+    } // namespace Lib
+} // namespace Yc