5 files changed, 33 insertions, 6 deletions
diff --git a/src/utils/is_one_of.hpp b/src/utils/is_one_of.hpp
index c706421..4d6770e 100644
--- a/src/utils/is_one_of.hpp
+++ b/src/utils/is_one_of.hpp
@@ -3,12 +3,15 @@
 #include <type_traits>
 
 template <typename...>
-struct is_one_of {
+struct is_one_of_implem {
     static constexpr bool value = false;
 };
 
 template <typename F, typename S, typename... T>
-struct is_one_of<F, S, T...> {
+struct is_one_of_implem<F, S, T...> {
     static constexpr bool value =
-        std::is_same<F, S>::value || is_one_of<F, T...>::value;
+        std::is_same<F, S>::value || is_one_of_implem<F, T...>::value;
 };
+
+template<typename... T>
+constexpr bool is_one_of = is_one_of_implem<T...>::value;
diff --git a/src/utils/time.cpp b/src/utils/time.cpp
index bc2c18d..71306fd 100644
--- a/src/utils/time.cpp
+++ b/src/utils/time.cpp
@@ -9,9 +9,10 @@
 
 namespace utils
 {
-std::string to_string(const std::time_t& timestamp)
+std::string to_string(const std::chrono::system_clock::time_point::rep& time)
 {
   constexpr std::size_t stamp_size = 21;
+  const std::time_t timestamp = static_cast<std::time_t>(time);
   char date_buf[stamp_size];
   if (std::strftime(date_buf, stamp_size, "%FT%TZ", std::gmtime(&timestamp)) != stamp_size - 1)
     return "";
diff --git a/src/utils/time.hpp b/src/utils/time.hpp
index c71cd9c..4b19634 100644
--- a/src/utils/time.hpp
+++ b/src/utils/time.hpp
@@ -2,9 +2,10 @@
 
 #include <ctime>
 #include <string>
+#include <chrono>
 
 namespace utils
 {
-std::string to_string(const std::time_t& timestamp);
+std::string to_string(const std::chrono::system_clock::time_point::rep& timestamp);
 std::time_t parse_datetime(const std::string& stamp);
-}
-\ No newline at end of file
+}
diff --git a/src/utils/uuid.cpp b/src/utils/uuid.cpp
new file mode 100644
index 0000000..23b71fe
--- /dev/null
+++ b/src/utils/uuid.cpp
@@ -0,0 +1,14 @@
+#include <utils/uuid.hpp>
+#include <uuid/uuid.h>
+
+namespace utils
+{
+std::string gen_uuid()
+{
+  char uuid_str[37];
+  uuid_t uuid;
+  uuid_generate(uuid);
+  uuid_unparse(uuid, uuid_str);
+  return uuid_str;
+}
+}
diff --git a/src/utils/uuid.hpp b/src/utils/uuid.hpp
new file mode 100644
index 0000000..d550475
--- /dev/null
+++ b/src/utils/uuid.hpp
@@ -0,0 +1,8 @@
+#pragma once
+
+#include <string>
+
+namespace utils
+{
+std::string gen_uuid();
+}