#include <deque>
#include <iostream>
#include <map>
#include <random>
#include <unordered_map>

#include "glaze/glaze.hpp"
#include "ut/ut.hpp"

static constexpr bool skip = false;

#define SKIP             \
   if constexpr (skip) { \
      return;            \
   }

using namespace ut;

std::mt19937 gen{};

static constexpr std::string_view charset{
   "!#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_`abcdefghijklmnopqrstuvwxyz{|}~\"\\\r\b\f\t\n"};

inline std::string generate_string()
{
   auto length = std::uniform_int_distribution<uint32_t>{0, 512}(gen);
   const auto charsetSize = charset.size();
   std::uniform_int_distribution<uint32_t> distribution(0, charsetSize - 1);
   std::string result{};
   result.reserve(length);
   for (uint32_t x = 0; x < length; ++x) {
      result += charset[distribution(gen)];
   }
   return result;
}

static constexpr std::string_view basic_charset{
   "!#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_`abcdefghijklmnopqrstuvwxyz{|}~"};

inline std::string generate_basic_string()
{
   auto length = std::uniform_int_distribution<uint32_t>{0, 512}(gen);
   const auto charsetSize = basic_charset.size();
   std::uniform_int_distribution<uint32_t> distribution(0, charsetSize - 1);
   std::string result{};
   result.reserve(length);
   for (uint32_t x = 0; x < length; ++x) {
      result += basic_charset[distribution(gen)];
   }
   return result;
}

suite string_performance = [] {
   "string_performance"_test = [] {
      SKIP;

#ifdef NDEBUG
      constexpr size_t n = 10000;
#else
      constexpr size_t n = 100;
#endif

      std::vector<std::string> vec;
      vec.reserve(n);

      for (size_t i = 0; i < n; ++i) {
         vec.emplace_back(generate_string());
      }

      std::string buffer;
      auto t0 = std::chrono::steady_clock::now();
      for (auto i = 0; i < 100; ++i) {
         std::ignore = glz::write_json(vec, buffer);
      }
      auto t1 = std::chrono::steady_clock::now();
      auto duration = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;
      std::cout << "write: " << duration << '\n';

      vec.clear();
      t0 = std::chrono::steady_clock::now();
      glz::error_ctx e;
      for (auto i = 0; i < 100; ++i) {
         vec.clear();
         e = glz::read_json(vec, buffer);
      }
      t1 = std::chrono::steady_clock::now();

      expect(!e) << glz::format_error(e, buffer);

      duration = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;
      std::cout << "read: " << duration << '\n';
      std::cout << '\n';
   };
};

suite basic_string_performance = [] {
   "basic_string_performance"_test = [] {
      SKIP;

#ifdef NDEBUG
      constexpr size_t n = 10000;
#else
      constexpr size_t n = 100;
#endif

      std::vector<std::string> vec;
      vec.reserve(n);

      for (size_t i = 0; i < n; ++i) {
         vec.emplace_back(generate_basic_string());
      }

      std::string buffer;
      auto t0 = std::chrono::steady_clock::now();
      for (auto i = 0; i < 100; ++i) {
         std::ignore = glz::write_json(vec, buffer);
      }
      auto t1 = std::chrono::steady_clock::now();
      auto duration = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;
      std::cout << "write: " << duration << '\n';

      vec.clear();
      t0 = std::chrono::steady_clock::now();
      glz::error_ctx e;
      for (auto i = 0; i < 100; ++i) {
         vec.clear();
         e = glz::read_json(vec, buffer);
      }
      t1 = std::chrono::steady_clock::now();

      expect(!e) << glz::format_error(e, buffer);

      duration = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;
      std::cout << "read: " << duration << '\n';
      std::cout << '\n';
   };
};

struct integers
{
   int32_t a{};
   uint32_t b{};
   int64_t c{};
   uint64_t d{};
};

/*suite default_numerics = [] {
   "default numerics"_test = [] {
#ifdef NDEBUG
      constexpr size_t n = 10000000;
#else
      constexpr size_t n = 100000;
#endif

      integers ints_obj{};

      std::string buffer;
      auto t0 = std::chrono::steady_clock::now();
      for (size_t i = 0; i < n; ++i) {
         std::ignore = glz::write_json(ints_obj, buffer);
      }
      auto t1 = std::chrono::steady_clock::now();
      auto duration = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;
      std::cout << "write integer: " << duration << '\n';

      t0 = std::chrono::steady_clock::now();
      glz::error_ctx e;
      for (size_t i = 0; i < n; ++i) {
         e = glz::read_json(ints_obj, buffer);
      }
      t1 = std::chrono::steady_clock::now();

      expect(!e) << glz::format_error(e, buffer);

      duration = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;
      std::cout << "read integer: " << duration << '\n';
      std::cout << '\n';
   };
};*/

suite integers_test = [] {
   "integers"_test = [] {
      SKIP;

#ifdef NDEBUG
      constexpr size_t n = 10000000;
#else
      constexpr size_t n = 100000;
#endif

      integers v{};

      std::string buffer;
      auto t0 = std::chrono::steady_clock::now();
      glz::error_ctx e;
      for (size_t i = 0; i < n; ++i) {
         v.a = int32_t(i);
         v.b = uint32_t(i);
         v.c = int64_t(i);
         v.d = uint64_t(i);
         std::ignore = glz::write_json(v, buffer);
         e = glz::read_json(v, buffer);
      }
      auto t1 = std::chrono::steady_clock::now();
      auto duration = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;
      std::cout << "integers read/write: " << duration << '\n';
   };
};

suite uint64_t_test = [] {
   "uint64_t"_test = [] {
      SKIP;

#ifdef NDEBUG
      constexpr size_t n = 100000000;
#else
      constexpr size_t n = 100000;
#endif

      std::string buffer;
      auto t0 = std::chrono::steady_clock::now();
      glz::error_ctx e;
      for (size_t i = 0; i < n; ++i) {
         auto v = uint64_t(i);
         std::ignore = glz::write_json(v, buffer);
         e = glz::read_json(v, buffer);
         if (bool(e)) {
            break;
         }
      }
      expect(not e);
      auto t1 = std::chrono::steady_clock::now();
      auto duration = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;
      std::cout << "integers read/write: " << duration << '\n';
   };
};

suite float_tests = [] {
   "float"_test = [] {
      SKIP;

#ifdef NDEBUG
      constexpr size_t n = 10000000;
#else
      constexpr size_t n = 100000;
#endif

      float v{};

      std::string buffer;
      auto t0 = std::chrono::steady_clock::now();
      glz::error_ctx e;
      for (uint32_t i = 0; i < n; ++i) {
         std::ignore = glz::write_json(v, buffer);
         e = glz::read_json(v, buffer);
         std::memcpy(&v, &i, sizeof(float));
      }
      auto t1 = std::chrono::steady_clock::now();
      auto duration = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;
      std::cout << "float read/write: " << duration << '\n';
   };
};

[[maybe_unused]] constexpr std::string_view json_minified =
   R"({"fixed_object":{"int_array":[0,1,2,3,4,5,6],"float_array":[0.1,0.2,0.3,0.4,0.5,0.6],"double_array":[3288398.238,2.33e+24,28.9,0.928759872,0.22222848,0.1,0.2,0.3,0.4]},"fixed_name_object":{"name0":"James","name1":"Abraham","name2":"Susan","name3":"Frank","name4":"Alicia"},"another_object":{"string":"here is some text","another_string":"Hello World","escaped_text":"{\"some key\":\"some string value\"}","boolean":false,"nested_object":{"v3s":[[0.12345,0.23456,0.001345],[0.3894675,97.39827,297.92387],[18.18,87.289,2988.298]],"id":"298728949872"}},"string_array":["Cat","Dog","Elephant","Tiger"],"string":"Hello world","number":3.14,"boolean":true,"another_bool":false})";

// #define USE_PURE_REFLECTION

struct fixed_object_t
{
   std::vector<int> int_array;
   std::vector<float> float_array;
   std::vector<double> double_array;
};

#ifndef USE_PURE_REFLECTION
template <>
struct glz::meta<fixed_object_t>
{
   using T = fixed_object_t;
   static constexpr auto value = object(&T::int_array, &T::float_array, &T::double_array);
};
#endif

struct fixed_name_object_t
{
   std::string name0{};
   std::string name1{};
   std::string name2{};
   std::string name3{};
   std::string name4{};
};

#ifndef USE_PURE_REFLECTION
template <>
struct glz::meta<fixed_name_object_t>
{
   using T = fixed_name_object_t;
   static constexpr auto value = object(&T::name0, &T::name1, &T::name2, &T::name3, &T::name4);
};
#endif

struct nested_object_t
{
   std::vector<std::array<double, 3>> v3s{};
   std::string id{};
};

#ifndef USE_PURE_REFLECTION
template <>
struct glz::meta<nested_object_t>
{
   using T = nested_object_t;
   static constexpr auto value = object(&T::v3s, &T::id);
};
#endif

struct another_object_t
{
   std::string string{};
   std::string another_string{};
   std::string escaped_text{};
   bool boolean{};
   nested_object_t nested_object{};
};

#ifndef USE_PURE_REFLECTION
template <>
struct glz::meta<another_object_t>
{
   using T = another_object_t;
   static constexpr auto value =
      object(&T::string, &T::another_string, &T::escaped_text, &T::boolean, &T::nested_object);
};
#endif

struct obj_t
{
   fixed_object_t fixed_object{};
   fixed_name_object_t fixed_name_object{};
   another_object_t another_object{};
   std::vector<std::string> string_array{};
   std::string string{};
   double number{};
   bool boolean{};
   bool another_bool{};
};

#ifndef USE_PURE_REFLECTION
template <>
struct glz::meta<obj_t>
{
   using T = obj_t;
   static constexpr auto value = object(&T::fixed_object, &T::fixed_name_object, &T::another_object, &T::string_array,
                                        &T::string, &T::number, &T::boolean, &T::another_bool);
};
#endif

// We scale all speeds by the minified JSON byte length, so that libraries which do not efficiently write JSON do not
// get an unfair advantage We want to know how fast the libraries will serialize/deserialize with repsect to one another
[[maybe_unused]] size_t minified_byte_length{};
#ifdef NDEBUG
[[maybe_unused]] constexpr size_t iterations = 1'000'000;
#else
[[maybe_unused]] constexpr size_t iterations = 100'000;
#endif

struct results
{
   std::string_view name{};
   std::string_view url{};
   size_t iterations{};

   std::optional<size_t> json_byte_length{};
   std::optional<double> json_read{};
   std::optional<double> json_write{};
   std::optional<double> json_roundtrip{};

   std::optional<size_t> binary_byte_length{};
   std::optional<double> beve_write{};
   std::optional<double> beve_read{};
   std::optional<double> beve_roundtrip{};

   void print(bool use_minified = true)
   {
      if (json_roundtrip) {
         std::cout << name << " json roundtrip: " << *json_roundtrip << " s\n";
      }

      if (json_byte_length) {
         std::cout << name << " json byte length: " << *json_byte_length << '\n';
      }

      if (json_write) {
         if (json_byte_length) {
            const auto byte_length = use_minified ? minified_byte_length : *json_byte_length;
            const auto MBs = iterations * byte_length / (*json_write * 1048576);
            std::cout << name << " json write: " << *json_write << " s, " << MBs << " MB/s\n";
         }
         else {
            std::cout << name << " json write: " << *json_write << " s\n";
         }
      }

      if (json_read) {
         if (json_byte_length) {
            const auto byte_length = use_minified ? minified_byte_length : *json_byte_length;
            const auto MBs = iterations * byte_length / (*json_read * 1048576);
            std::cout << name << " json read: " << *json_read << " s, " << MBs << " MB/s\n";
         }
         else {
            std::cout << name << " json read: " << *json_read << " s\n";
         }
      }

      if (beve_roundtrip) {
         std::cout << '\n';
         std::cout << name << " beve roundtrip: " << *beve_roundtrip << " s\n";
      }

      if (binary_byte_length) {
         std::cout << name << " beve byte length: " << *binary_byte_length << '\n';
      }

      if (beve_write) {
         if (binary_byte_length) {
            const auto MBs = iterations * *binary_byte_length / (*beve_write * 1048576);
            std::cout << name << " beve write: " << *beve_write << " s, " << MBs << " MB/s\n";
         }
         else {
            std::cout << name << " beve write: " << *beve_write << " s\n";
         }
      }

      if (beve_read) {
         if (binary_byte_length) {
            const auto MBs = iterations * *binary_byte_length / (*beve_read * 1048576);
            std::cout << name << " beve read: " << *beve_read << " s, " << MBs << " MB/s\n";
         }
         else {
            std::cout << name << " beve read: " << *beve_read << " s\n";
         }
      }

      std::cout << "\n---\n" << std::endl;
   }
};

template <auto Opts>
auto glaze_test()
{
   std::string buffer{json_minified};

   obj_t obj;

   auto t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < iterations; ++i) {
      if (glz::read<Opts>(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
      if (glz::write_json(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   auto t1 = std::chrono::steady_clock::now();

   results r{Opts.minified ? "Glaze (.minified)" : "Glaze", "https://github.com/stephenberry/glaze", iterations};
   r.json_roundtrip = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   // write performance
   t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < iterations; ++i) {
      if (glz::write<Opts>(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   t1 = std::chrono::steady_clock::now();

   r.json_byte_length = buffer.size();
   minified_byte_length = *r.json_byte_length;
   r.json_write = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   // read performance

   t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < iterations; ++i) {
      if (glz::read_json(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   t1 = std::chrono::steady_clock::now();

   r.json_read = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   // beve write performance

   t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < iterations; ++i) {
      if (glz::write_beve(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   t1 = std::chrono::steady_clock::now();

   r.binary_byte_length = buffer.size();
   r.beve_write = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   // beve read performance

   t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < iterations; ++i) {
      if (glz::read_beve(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   t1 = std::chrono::steady_clock::now();

   r.beve_read = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   // beve round trip

   t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < iterations; ++i) {
      if (glz::read_beve(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
      if (glz::write_beve(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   t1 = std::chrono::steady_clock::now();

   r.beve_roundtrip = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   r.print();

   return r;
}

suite object_performance = [] {
   "object_performance"_test = [] {
      // SKIP;
      glaze_test<glz::opts{}>();
   };
};

inline std::string emoji_unicode(auto& generator)
{
   // Define Unicode ranges for emojis
   static const std::vector<std::pair<char32_t, char32_t>> emoji_ranges = {
      {0x1F600, 0x1F64F}, // Emoticons
      {0x1F300, 0x1F5FF}, // Misc Symbols and Pictographs
      {0x1F680, 0x1F6FF}, // Transport and Map Symbols
      {0x2600, 0x26FF}, // Misc symbols
      {0x2700, 0x27BF}, // Dingbats
      {0x1F900, 0x1F9FF}, // Supplemental Symbols and Pictographs
      {0x1FA70, 0x1FAFF} // Symbols and Pictographs Extended-A
   };

   // Calculate total number of emojis
   size_t total_emojis = 0;
   for (const auto& range : emoji_ranges) {
      total_emojis += range.second - range.first + 1;
   }

   // Generate a random emoji code point
   std::uniform_int_distribution<size_t> dis(0, total_emojis - 1);
   size_t random_index = dis(generator);

   char32_t cpoint = 0;
   for (const auto& range : emoji_ranges) {
      size_t range_size = range.second - range.first + 1;
      if (random_index < range_size) {
         cpoint = char32_t(range.first + random_index);
         break;
      }
      random_index -= range_size;
   }

   // Convert the code point to UTF-8
   std::string result;
   if (cpoint <= 0x7F) {
      result.push_back(static_cast<char>(cpoint));
   }
   else if (cpoint <= 0x7FF) {
      result.push_back(static_cast<char>(0xC0 | ((cpoint >> 6) & 0x1F)));
      result.push_back(static_cast<char>(0x80 | (cpoint & 0x3F)));
   }
   else if (cpoint <= 0xFFFF) {
      result.push_back(static_cast<char>(0xE0 | ((cpoint >> 12) & 0x0F)));
      result.push_back(static_cast<char>(0x80 | ((cpoint >> 6) & 0x3F)));
      result.push_back(static_cast<char>(0x80 | (cpoint & 0x3F)));
   }
   else {
      result.push_back(static_cast<char>(0xF0 | ((cpoint >> 18) & 0x07)));
      result.push_back(static_cast<char>(0x80 | ((cpoint >> 12) & 0x3F)));
      result.push_back(static_cast<char>(0x80 | ((cpoint >> 6) & 0x3F)));
      result.push_back(static_cast<char>(0x80 | (cpoint & 0x3F)));
   }

   return result;
}

template <class T>
struct test_generator
{
   std::vector<T> a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z;

   std::mt19937_64 gen{1};

   static constexpr std::string_view charset{
      "!#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_`abcdefghijklmnopqrstuvwxyz{|}~\"\\\r\b\f\t\n"};

   template <typename value_type_new>
   value_type_new randomizeNumberNormal(value_type_new mean, value_type_new stdDeviation)
   {
      std::normal_distribution<> normalDistributionTwo{static_cast<double>(mean), static_cast<double>(stdDeviation)};
      auto theResult = normalDistributionTwo(gen);
      if (theResult < 0) {
         theResult = -theResult;
      }
      return static_cast<value_type_new>(theResult);
   }

   template <class V>
   V randomizeNumberUniform(V range)
   {
      std::uniform_int_distribution<uint64_t> dis(0, uint64_t(range));
      return static_cast<V>(dis(gen));
   }

   void insertUnicodeInJSON(std::string& jsonString) { jsonString += emoji_unicode(gen); }

   std::string generateString()
   {
      auto length{randomizeNumberNormal(64.0f, 16.0f)};
      static constexpr auto charsetSize = charset.size();
      auto unicodeCount = randomizeNumberUniform(length / 8);
      std::string result{};
      for (int32_t ix = 0; ix < length; ++ix) {
         if (ix == static_cast<int32_t>(length / unicodeCount)) {
            insertUnicodeInJSON(result);
         }
         result += charset[randomizeNumberUniform(charsetSize - 1)];
      }
      return result;
   }

   double generateDouble()
   {
      auto newValue = randomizeNumberNormal(double{}, (std::numeric_limits<double>::max)() / 50000000);
      return generateBool() ? newValue : -newValue;
   };

   bool generateBool() { return static_cast<bool>(randomizeNumberNormal(50.0f, 50.0f) >= 50.0f); };

   uint64_t generateUint()
   {
      return randomizeNumberNormal((std::numeric_limits<uint64_t>::max)() / 2,
                                   (std::numeric_limits<uint64_t>::max)() / 2);
   };

   int64_t generateInt()
   {
      auto newValue = randomizeNumberNormal(int64_t{}, (std::numeric_limits<int64_t>::max)());
      return generateBool() ? newValue : -newValue;
   };

   test_generator()
   {
      auto fill = [&](auto& v) {
         auto arraySize01 = randomizeNumberNormal(35ull, 10ull);
         auto arraySize02 = randomizeNumberNormal(15ull, 10ull);
         auto arraySize03 = randomizeNumberNormal(5ull, 1ull);
         v.resize(arraySize01);
         for (uint64_t x = 0; x < arraySize01; ++x) {
            auto arr = randomizeNumberNormal(arraySize02, arraySize03);
            for (uint64_t y = 0; y < arr; ++y) {
               auto newString = generateString();
               v[x].testStrings.emplace_back(newString);
            }
            arr = randomizeNumberNormal(arraySize02, arraySize03);
            for (uint64_t y = 0; y < arr; ++y) {
               v[x].testUints.emplace_back(generateUint());
            }
            arr = randomizeNumberNormal(arraySize02, arraySize03);
            for (uint64_t y = 0; y < arr; ++y) {
               v[x].testInts.emplace_back(generateInt());
            }
            arr = randomizeNumberNormal(arraySize02, arraySize03);
            for (uint64_t y = 0; y < arr; ++y) {
               auto newBool = generateBool();
               v[x].testBools.emplace_back(newBool);
            }
            arr = randomizeNumberNormal(arraySize02, arraySize03);
            for (uint64_t y = 0; y < arr; ++y) {
               v[x].testDoubles.emplace_back(generateDouble());
            }
         }
      };

      fill(a);
      fill(b);
      fill(c);
      fill(d);
      fill(e);
      fill(f);
      fill(g);
      fill(h);
      fill(i);
      fill(j);
      fill(k);
      fill(l);
      fill(m);
      fill(n);
      fill(o);
      fill(p);
      fill(q);
      fill(r);
      fill(s);
      fill(t);
      fill(u);
      fill(v);
      fill(w);
      fill(x);
      fill(y);
      fill(z);
   }
};

struct test_struct
{
   std::vector<std::string> testStrings{};
   std::vector<uint64_t> testUints{};
   std::vector<double> testDoubles{};
   std::vector<int64_t> testInts{};
   std::vector<bool> testBools{};
};

template <>
struct glz::meta<test_generator<test_struct>>
{
   using T = test_generator<test_struct>;
   static constexpr auto value =
      object("a", &T::a, "b", &T::b, "c", &T::c, "d", &T::d, "e", &T::e, "f", &T::f, "g", &T::g, "h", &T::h, "i", &T::i,
             "j", &T::j, "k", &T::k, "l", &T::l, "m", &T::m, "n", &T::n, "o", &T::o, "p", &T::p, "q", &T::q, "r", &T::r,
             "s", &T::s, "t", &T::t, "u", &T::u, "v", &T::v, "w", &T::w, "x", &T::x, "y", &T::y, "z", &T::z);
};

template <>
struct glz::meta<test_struct>
{
   using T = test_struct;
   static constexpr auto parseValue =
      object(&T::testStrings, &T::testUints, &T::testDoubles, &T::testInts, &T::testBools);
};

template <class value_type>
struct abc_test
{
   std::vector<value_type> a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z;
};

template <>
struct glz::meta<abc_test<test_struct>>
{
   using T = abc_test<test_struct>;
   static constexpr auto value =
      glz::object(&T::a, &T::b, &T::c, &T::d, &T::e, &T::f, &T::g, &T::h, &T::i, &T::j, &T::k, &T::l, &T::m, &T::n,
                  &T::o, &T::p, &T::q, &T::r, &T::s, &T::t, &T::u, &T::v, &T::w, &T::x, &T::y, &T::z);
};

template <auto Opts>
auto benchmark_tester()
{
   std::string buffer{};
   test_generator<test_struct> obj{};
#ifdef NDEBUG
   constexpr size_t N = 300;
#else
   constexpr size_t N = 30;
#endif

   expect(!glz::write_file_json(obj, "benchmark_minified.json", std::string{}));

   if (glz::write_json(obj, buffer)) {
      throw std::runtime_error("error");
   }

   auto t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < N; ++i) {
      if (glz::read<Opts>(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
      if (glz::write_json(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   auto t1 = std::chrono::steady_clock::now();

   results r{Opts.minified ? "Glaze (.minified)" : "Glaze", "https://github.com/stephenberry/glaze", N};
   r.json_roundtrip = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   // write performance
   t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < N; ++i) {
      if (glz::write<Opts>(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   t1 = std::chrono::steady_clock::now();

   r.json_byte_length = buffer.size();
   minified_byte_length = *r.json_byte_length;
   r.json_write = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   // read performance

   t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < N; ++i) {
      if (glz::read_json(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   t1 = std::chrono::steady_clock::now();

   r.json_read = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   // beve write performance

   t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < N; ++i) {
      if (glz::write_beve(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   t1 = std::chrono::steady_clock::now();

   r.binary_byte_length = buffer.size();
   r.beve_write = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   // beve read performance

   t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < N; ++i) {
      if (glz::read_beve(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   t1 = std::chrono::steady_clock::now();

   r.beve_read = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   // beve round trip

   t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < N; ++i) {
      if (glz::read_beve(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
      if (glz::write_beve(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   t1 = std::chrono::steady_clock::now();

   r.beve_roundtrip = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   r.print();

   return r;
}

suite benchmark_test = [] {
   "benchmark"_test = [] {
      SKIP;
      benchmark_tester<glz::opts{}>();
   };
};

struct icon_emoji_data
{
   std::optional<std::string> name{};
   std::nullptr_t id{nullptr};
};

struct permission_overwrite
{
   std::string allow{};
   std::string deny{};
   std::string id{};
   int64_t type{};
};

struct channel_data
{
   std::vector<permission_overwrite> permission_overwrites{};
   std::optional<std::string> last_message_id{};
   int64_t default_thread_rate_limit_per_user{};
   std::vector<std::nullptr_t> applied_tags{};
   std::vector<std::nullptr_t> recipients{};
   int64_t default_auto_archive_duration{};
   std::nullptr_t status{nullptr};
   std::string last_pin_timestamp{};
   std::nullptr_t topic{nullptr};
   int64_t rate_limit_per_user{};
   icon_emoji_data icon_emoji{};
   int64_t total_message_sent{};
   int64_t video_quality_mode{};
   std::string application_id{};
   std::string permissions{};
   int64_t message_count{};
   std::string parent_id{};
   int64_t member_count{};
   std::string owner_id{};
   std::string guild_id{};
   int64_t user_limit{};
   int64_t position{};
   std::string name{};
   std::string icon{};
   int64_t version{};
   int64_t bitrate{};
   std::string id{};
   int64_t flags{};
   int64_t type{};
   bool managed{};
   bool nsfw{};
};

struct user_data
{
   std::nullptr_t avatar_decoration_data{nullptr};
   std::optional<std::string> display_name{};
   std::optional<std::string> global_name{};
   std::optional<std::string> avatar{};
   std::nullptr_t banner{nullptr};
   std::nullptr_t locale{nullptr};
   std::string discriminator{};
   std::string user_name{};
   int64_t accent_color{};
   int64_t premium_type{};
   int64_t public_flags{};
   std::string email{};
   bool mfa_enabled{};
   std::string id{};
   int64_t flags{};
   bool verified{};
   bool system{};
   bool bot{};
};

struct member_data
{
   std::nullptr_t communication_disabled_until{nullptr};
   std::nullptr_t premium_since{nullptr};
   std::optional<std::string> nick{};
   std::nullptr_t avatar{nullptr};
   std::vector<std::string> roles{};
   std::string permissions{};
   std::string joined_at{};
   std::string guild_id{};
   user_data user{};
   int64_t flags{};
   bool pending{};
   bool deaf{};
   bool mute{};
};

struct tags_data
{
   std::nullptr_t premium_subscriber{nullptr};
   std::optional<std::string> bot_id{};
};

struct role_data
{
   std::nullptr_t unicode_emoji{nullptr};
   std::nullptr_t icon{nullptr};
   std::string permissions{};
   int64_t position{};
   std::string name{};
   bool mentionable{};
   int64_t version{};
   std::string id{};
   tags_data tags{};
   int64_t color{};
   int64_t flags{};
   bool managed{};
   bool hoist{};
};

struct guild_data
{
   std::nullptr_t latest_on_boarding_question_id{nullptr};
   std::vector<std::nullptr_t> guild_scheduled_events{};
   std::nullptr_t safety_alerts_channel_id{nullptr};
   std::nullptr_t inventory_settings{nullptr};
   std::vector<std::nullptr_t> voice_states{};
   std::nullptr_t discovery_splash{nullptr};
   std::nullptr_t vanity_url_code{nullptr};
   std::nullptr_t application_id{nullptr};
   std::nullptr_t afk_channel_id{nullptr};
   int64_t default_message_notifications{};
   int64_t max_stage_video_channel_users{};
   std::string public_updates_channel_id{};
   std::nullptr_t description{nullptr};
   std::vector<std::nullptr_t> threads{};
   std::vector<channel_data> channels{};
   int64_t premium_subscription_count{};
   int64_t approximate_presence_count{};
   std::vector<std::string> features{};
   std::vector<std::string> stickers{};
   bool premium_progress_bar_enabled{};
   std::vector<member_data> members{};
   std::nullptr_t hub_type{nullptr};
   int64_t approximate_member_count{};
   int64_t explicit_content_filter{};
   int64_t max_video_channel_users{};
   std::nullptr_t splash{nullptr};
   std::nullptr_t banner{nullptr};
   std::string system_channel_id{};
   std::string widget_channel_id{};
   std::string preferred_locale{};
   int64_t system_channel_flags{};
   std::string rules_channel_id{};
   std::vector<role_data> roles{};
   int64_t verification_level{};
   std::string permissions{};
   int64_t max_presences{};
   std::string discovery{};
   std::string joined_at{};
   int64_t member_count{};
   int64_t premium_tier{};
   std::string owner_id{};
   int64_t max_members{};
   int64_t afk_timeout{};
   bool widget_enabled{};
   std::string region{};
   int64_t nsfw_level{};
   int64_t mfa_level{};
   std::string name{};
   std::string icon{};
   bool unavailable{};
   std::string id{};
   int64_t flags{};
   bool large{};
   bool owner{};
   bool nsfw{};
   bool lazy{};
};

struct discord_message
{
   std::string t{};
   guild_data d{};
   int64_t op{};
   int64_t s{};
};

template <>
struct glz::meta<icon_emoji_data>
{
   using T = icon_emoji_data;
   static constexpr auto value = object("name", &T::name, "id", &T::id);
};

template <>
struct glz::meta<permission_overwrite>
{
   using T = permission_overwrite;
   static constexpr auto value = object("allow", &T::allow, "deny", &T::deny, "id", &T::id, "type", &T::type);
};

template <>
struct glz::meta<channel_data>
{
   using T = channel_data;
   static constexpr auto value = object(
      "permission_overwrites", &T::permission_overwrites, "last_message_id", &T::last_message_id,
      "default_thread_rate_limit_per_user", &T::default_thread_rate_limit_per_user, "applied_tags", &T::applied_tags,
      "recipients", &T::recipients, "default_auto_archive_duration", &T::default_auto_archive_duration, "status",
      &T::status, "last_pin_timestamp", &T::last_pin_timestamp, "topic", &T::topic, "rate_limit_per_user",
      &T::rate_limit_per_user, "icon_emoji", &T::icon_emoji, "total_message_sent", &T::total_message_sent,
      "video_quality_mode", &T::video_quality_mode, "application_id", &T::application_id, "permissions",
      &T::permissions, "message_count", &T::message_count, "parent_id", &T::parent_id, "member_count", &T::member_count,
      "owner_id", &T::owner_id, "guild_id", &T::guild_id, "user_limit", &T::user_limit, "position", &T::position,
      "name", &T::name, "icon", &T::icon, "version", &T::version, "bitrate", &T::bitrate, "id", &T::id, "flags",
      &T::flags, "type", &T::type, "managed", &T::managed, "nsfw", &T::nsfw);
};

template <>
struct glz::meta<user_data>
{
   using T = user_data;
   static constexpr auto value =
      object("avatar_decoration_data", &T::avatar_decoration_data, "display_name", &T::display_name, "global_name",
             &T::global_name, "avatar", &T::avatar, "banner", &T::banner, "locale", &T::locale, "discriminator",
             &T::discriminator, "user_name", &T::user_name, "accent_color", &T::accent_color, "premium_type",
             &T::premium_type, "public_flags", &T::public_flags, "email", &T::email, "mfa_enabled", &T::mfa_enabled,
             "id", &T::id, "flags", &T::flags, "verified", &T::verified, "system", &T::system, "bot", &T::bot);
};

template <>
struct glz::meta<member_data>
{
   using T = member_data;
   static constexpr auto value =
      object("communication_disabled_until", &T::communication_disabled_until, "premium_since", &T::premium_since,
             "nick", &T::nick, "avatar", &T::avatar, "roles", &T::roles, "permissions", &T::permissions, "joined_at",
             &T::joined_at, "guild_id", &T::guild_id, "user", &T::user, "flags", &T::flags, "pending", &T::pending,
             "deaf", &T::deaf, "mute", &T::mute);
};

template <>
struct glz::meta<tags_data>
{
   using T = tags_data;
   static constexpr auto value = object("premium_subscriber", &T::premium_subscriber, "bot_id", &T::bot_id);
};

template <>
struct glz::meta<role_data>
{
   using T = role_data;
   static constexpr auto value =
      object("unicode_emoji", &T::unicode_emoji, "icon", &T::icon, "permissions", &T::permissions, "position",
             &T::position, "name", &T::name, "mentionable", &T::mentionable, "version", &T::version, "id", &T::id,
             "tags", &T::tags, "color", &T::color, "flags", &T::flags, "managed", &T::managed, "hoist", &T::hoist);
};

template <>
struct glz::meta<guild_data>
{
   using T = guild_data;
   static constexpr auto value = object(
      "latest_on_boarding_question_id", &T::latest_on_boarding_question_id, "guild_scheduled_events",
      &T::guild_scheduled_events, "safety_alerts_channel_id", &T::safety_alerts_channel_id, "inventory_settings",
      &T::inventory_settings, "voice_states", &T::voice_states, "discovery_splash", &T::discovery_splash,
      "vanity_url_code", &T::vanity_url_code, "application_id", &T::application_id, "afk_channel_id",
      &T::afk_channel_id, "default_message_notifications", &T::default_message_notifications,
      "max_stage_video_channel_users", &T::max_stage_video_channel_users, "public_updates_channel_id",
      &T::public_updates_channel_id, "description", &T::description, "threads", &T::threads, "channels", &T::channels,
      "premium_subscription_count", &T::premium_subscription_count, "approximate_presence_count",
      &T::approximate_presence_count, "features", &T::features, "stickers", &T::stickers,
      "premium_progress_bar_enabled", &T::premium_progress_bar_enabled, "members", &T::members, "hub_type",
      &T::hub_type, "approximate_member_count", &T::approximate_member_count, "explicit_content_filter",
      &T::explicit_content_filter, "max_video_channel_users", &T::max_video_channel_users, "splash", &T::splash,
      "banner", &T::banner, "system_channel_id", &T::system_channel_id, "widget_channel_id", &T::widget_channel_id,
      "preferred_locale", &T::preferred_locale, "system_channel_flags", &T::system_channel_flags, "rules_channel_id",
      &T::rules_channel_id, "roles", &T::roles, "verification_level", &T::verification_level, "permissions",
      &T::permissions, "max_presences", &T::max_presences, "discovery", &T::discovery, "joined_at", &T::joined_at,
      "member_count", &T::member_count, "premium_tier", &T::premium_tier, "owner_id", &T::owner_id, "max_members",
      &T::max_members, "afk_timeout", &T::afk_timeout, "widget_enabled", &T::widget_enabled, "region", &T::region,
      "nsfw_level", &T::nsfw_level, "mfa_level", &T::mfa_level, "name", &T::name, "icon", &T::icon, "unavailable",
      &T::unavailable, "id", &T::id, "flags", &T::flags, "large", &T::large, "owner", &T::owner, "nsfw", &T::nsfw,
      "lazy", &T::lazy);
};

template <>
struct glz::meta<discord_message>
{
   using value_type = discord_message;
   static constexpr auto value =
      object("t", &value_type::t, "d", &value_type::d, "op", &value_type::op, "s", &value_type::s);
};

template <class T, auto Opts>
auto generic_tester()
{
   T obj{};

   std::string buffer{};
   expect(not glz::write_json(obj, buffer));

   auto t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < iterations; ++i) {
      if (glz::read<Opts>(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
      if (glz::write_json(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   auto t1 = std::chrono::steady_clock::now();

   results r{Opts.minified ? "Glaze (.minified)" : "Glaze", "https://github.com/stephenberry/glaze", iterations};
   r.json_roundtrip = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   // write performance
   t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < iterations; ++i) {
      if (glz::write<Opts>(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   t1 = std::chrono::steady_clock::now();

   r.json_byte_length = buffer.size();
   minified_byte_length = *r.json_byte_length;
   r.json_write = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   // read performance

   t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < iterations; ++i) {
      if (glz::read_json(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   t1 = std::chrono::steady_clock::now();

   r.json_read = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   // validate performance

   t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < iterations; ++i) {
      if (glz::validate_json(buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   t1 = std::chrono::steady_clock::now();

   std::cout << "validation time: " << std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6
             << '\n';

   // beve write performance

   t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < iterations; ++i) {
      if (glz::write_beve(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   t1 = std::chrono::steady_clock::now();

   r.binary_byte_length = buffer.size();
   r.beve_write = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   // beve read performance

   t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < iterations; ++i) {
      if (glz::read_beve(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   t1 = std::chrono::steady_clock::now();

   r.beve_read = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   // beve round trip

   t0 = std::chrono::steady_clock::now();

   for (size_t i = 0; i < iterations; ++i) {
      if (glz::read_beve(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
      if (glz::write_beve(obj, buffer)) {
         std::cout << "glaze error!\n";
         break;
      }
   }

   t1 = std::chrono::steady_clock::now();

   r.beve_roundtrip = std::chrono::duration_cast<std::chrono::microseconds>(t1 - t0).count() * 1e-6;

   r.print();

   return r;
}

suite discord_test = [] {
   "discord"_test = [] {
      SKIP;
      generic_tester<discord_message, glz::opts{}>();
   };
};

int main() { return 0; }