// Source - https://mariusbancila.ro/blog/2023/08/17/how-to-convert-an-enum-to-string-in-cpp/

#pragma once

#undef DECL_ENUM_ELEMENT
#undef BEGIN_ENUM
#undef END_ENUM

#ifndef GENERATE_ENUM_STRINGS

   #define DECLARE_ENUM_ELEMENT(element)  element,
   #define BEGIN_ENUM(ENUM_NAME, TYPE)    typedef enum class tag##ENUM_NAME : TYPE {
   #define BEGIN_ENUM_INT(ENUM_NAME)      BEGIN_ENUM(ENUM_NAME, int)
   #define END_ENUM(ENUM_NAME)            } ENUM_NAME; const char* ENUM_NAME##_as_string(enum tag##ENUM_NAME index);

   #define DECLARE_ENUM_ELEMENT_WITH_VALUE(element, value)  element = value,
   #define BEGIN_ENUM_WITH_VALUES(ENUM_NAME, TYPE)          BEGIN_ENUM(ENUM_NAME, TYPE)
   #define BEGIN_ENUM_WITH_VALUES_INT(ENUM_NAME)            BEGIN_ENUM(ENUM_NAME, int)
   #define END_ENUM_WITH_VALUES(ENUM_NAME, TYPE)                  END_ENUM(ENUM_NAME)

#else
   #define NO_VALUE                       "<none>"

   #define DECLARE_ENUM_ELEMENT(element)     #element,

   #define BEGIN_ENUM(ENUM_NAME, TYPE)       enum class tag##ENUM_NAME : TYPE;\
const char* ENUM_NAME##_as_string(enum tag##ENUM_NAME value) {\
   std::size_t index = static_cast<std::size_t>(value);\
   static const char* s_##ENUM_NAME[] = {

   #define BEGIN_ENUM_INT(ENUM_NAME)         BEGIN_ENUM(ENUM_NAME, int)

   #define END_ENUM(ENUM_NAME)               };\
   static const std::size_t s_##ENUM_NAME_len = sizeof(s_##ENUM_NAME)/sizeof(const char*);\
   if(index >=0 && index < s_##ENUM_NAME_len)\
      return s_##ENUM_NAME[index]; \
   return NO_VALUE;\
}

   #define DECLARE_ENUM_ELEMENT_WITH_VALUE(element, value) {value, #element},

   #define BEGIN_ENUM_WITH_VALUES(ENUM_NAME, TYPE)          enum class tag##ENUM_NAME : TYPE;\
const char* ENUM_NAME##_as_string(enum tag##ENUM_NAME value) {\
   std::map<TYPE, const char*> sv = {

   #define BEGIN_ENUM_WITH_VALUES_INT(ENUM_NAME)            BEGIN_ENUM_WITH_VALUES(ENUM_NAME, int)

   #define END_ENUM_WITH_VALUES(ENUM_NAME, TYPE)                  };\
   auto it = sv.find(static_cast<TYPE>(value));\
   if (it != sv.end())\
      return it->second;\
   return NO_VALUE;\
}

#endif