Add mapping logic and serialization for writing

app/src/Serializer.cxx

@@ -0,0 +1,38 @@
+#include <filesystem>
+#include <fstream>
+#include <iostream>
+
+#include <Serializer.h>
+
+namespace fs = std::filesystem;
+
+#define SERIALIZATION_DIR "/etc/fantasize"
+#define FANS_JSON_FILENAME "fans.json"
+
+Serializer::Serializer() {
+  if (!fs::exists(SERIALIZATION_DIR)) {
+    fs::create_directory(SERIALIZATION_DIR);
+  }
+}
+
+void Serializer::Serialize(std::vector<std::shared_ptr<Fan>> fans) {
+  json fansArr;
+
+  for (auto f : fans) {
+    fansArr.push_back(f->toJson());
+  }
+
+  json obj;
+
+  obj["fans"] = fansArr;
+
+  std::cout << "Json obj: " << obj.dump(2) << std::endl;
+
+  WriteJson(obj);
+}
+
+void Serializer::WriteJson(json o) {
+  std::ofstream ostrm(fs::path(SERIALIZATION_DIR) / FANS_JSON_FILENAME,
+                      std::ios::trunc);
+  ostrm << o.dump(2) << "\n";
+}