Refactor file loading functions: simplify LoadFile, add LoadConfigFile, and adjust platform handling

src/app/core/utils/file_util.cc

@@ -29,8 +29,31 @@ std::string GetFileName(const std::string &filename) {
   return filename.substr(slash + 1);
 }
 
-std::string LoadFile(const std::string &filename, Platform platform) {
+std::string LoadFile(const std::string &filename) {
   std::string contents;
+  std::ifstream file(filename);
+  if (file.is_open()) {
+    std::stringstream buffer;
+    buffer << file.rdbuf();
+    contents = buffer.str();
+    file.close();
+  } else {
+    // Throw an exception
+    throw std::runtime_error("Could not open file: " + filename);
+  }
+  return contents;
+}
+
+std::string LoadConfigFile(const std::string &filename) {
+  std::string contents;
+  Platform platform;
+#if defined(_WIN32)
+  platform = Platform::kWindows;
+#elif defined(__APPLE__)
+  platform = Platform::kMacOS;
+#else
+  platform = Platform::kLinux;
+#endif
   std::string filepath = GetConfigDirectory(platform) + "/" + filename;
   std::ifstream file(filepath);
   if (file.is_open()) {

src/app/core/utils/file_util.h

@@ -10,7 +10,8 @@ enum class Platform { kUnknown, kMacOS, kiOS, kWindows, kLinux };
 
 std::string GetFileExtension(const std::string &filename);
 std::string GetFileName(const std::string &filename);
-std::string LoadFile(const std::string &filename, Platform platform);
+std::string LoadFile(const std::string &filename);
+std::string LoadConfigFile(const std::string &filename);
 std::string GetConfigDirectory(Platform platform);
 
 void SaveFile(const std::string &filename, const std::string &data,