path: root/src/openvic-simulation/misc/Define.cpp

#include "Define.hpp"

#include <openvic-dataloader/v2script/AbstractSyntaxTree.hpp>

#include "openvic-simulation/dataloader/NodeTools.hpp"
#include "openvic-simulation/types/Date.hpp"
#include "openvic-simulation/types/IdentifierRegistry.hpp"
#include "openvic-simulation/types/fixed_point/FixedPoint.hpp"
#include "openvic-simulation/utility/StringUtils.hpp"

using namespace OpenVic;
using namespace OpenVic::NodeTools;

std::string_view Define::type_to_string(Type type) {
   using enum Type;

   switch (type) {
   case Date: return "date";
   case Country: return "country";
   case Economy: return "economy";
   case Military: return "military";
   case Diplomacy: return "diplomacy";
   case Pops: return "pops";
   case Ai: return "ai";
   case Graphics: return "graphics";
   default: return "unknown";
   }
}

Define::Type Define::string_to_type(std::string_view str) {
   using enum Type;

   static const string_map_t<Define::Type> type_map {
      { "country",   Country },
      { "economy",   Economy },
      { "military",  Military },
      { "diplomacy", Diplomacy },
      { "pops",      Pops },
      { "ai",        Ai },
      { "graphics",  Graphics },
   };

   const string_map_t<Define::Type>::const_iterator type_it = type_map.find(str);

   if (type_it != type_map.end()) {
      return type_it->second;
   } else {
      return Unknown;
   }
}

Define::Define(std::string_view new_identifier, std::string_view new_value, Type new_type)
   : HasIdentifier { new_identifier }, value { new_value }, type { new_type } {}

Date Define::get_value_as_date(bool* successful) const {
   return Date::from_string(value, successful);
}

fixed_point_t Define::get_value_as_fp(bool* successful) const {
   return fixed_point_t::parse(value, successful);
}

int64_t Define::get_value_as_int(bool* successful) const {
   return StringUtils::string_to_int64(value, successful);
}

uint64_t Define::get_value_as_uint(bool* successful) const {
   return StringUtils::string_to_uint64(value, successful);
}

std::ostream& OpenVic::operator<<(std::ostream& os, Define::Type type) {
   return os << Define::type_to_string(type);
}

template<typename T>
bool DefineManager::load_define(T& value, Define::Type type, std::string_view name) const {
   static_assert(
      std::same_as<T, OpenVic::Date> || std::same_as<T, fixed_point_t> || std::integral<T>
   );

   Define const* define = defines.get_item_by_identifier(name);

   if (define != nullptr) {
      if (define->type != type) {
         Logger::warning("Mismatched define type for \"", name, "\" - expected ", type, ", got ", define->type);
      }

      const auto parse =
         [define, &value, &name]<typename U, U (Define::*Func)(bool*) const>(std::string_view type_name) -> bool {
            bool success = false;
            const U result = (define->*Func)(&success);
            if (success) {
               value = static_cast<T>(result);
               return true;
            } else {
               Logger::error("Failed to parse ", type_name, " \"", define->get_value(), "\" for define \"", name, "\"");
               return false;
            }
         };

      if constexpr (std::same_as<T, OpenVic::Date>) {
         return parse.template operator()<Date, &Define::get_value_as_date>("date");
      } else if constexpr (std::same_as<T, fixed_point_t>) {
         return parse.template operator()<fixed_point_t, &Define::get_value_as_fp>("fixed point");
      } else if constexpr (std::signed_integral<T>) {
         return parse.template operator()<int64_t, &Define::get_value_as_int>("signed int");
      } else if constexpr (std::unsigned_integral<T>) {
         return parse.template operator()<uint64_t, &Define::get_value_as_uint>("unsigned int");
      }
   } else {
      Logger::error("Missing define \"", name, "\"");
      return false;
   }
}

template<Timespan (*Func)(Timespan::day_t)>
bool DefineManager::_load_define_timespan(Timespan& value, Define::Type type, std::string_view name) const {
   Define const* define = defines.get_item_by_identifier(name);
   if (define != nullptr) {
      if (define->type != type) {
         Logger::warning("Mismatched define type for \"", name, "\" - expected ", type, ", got ", define->type);
      }
      bool success = false;
      const int64_t result = define->get_value_as_int(&success);
      if (success) {
         value = Func(result);
         return true;
      } else {
         Logger::error("Failed to parse days \"", define->get_value(), "\" for define \"", name, "\"");
         return false;
      }
   } else {
      Logger::error("Missing define \"", name, "\"");
      return false;
   }
}

bool DefineManager::load_define_days(Timespan& value, Define::Type type, std::string_view name) const {
   return _load_define_timespan<Timespan::from_days>(value, type, name);
}

bool DefineManager::load_define_months(Timespan& value, Define::Type type, std::string_view name) const {
   return _load_define_timespan<Timespan::from_months>(value, type, name);
}

bool DefineManager::load_define_years(Timespan& value, Define::Type type, std::string_view name) const {
   return _load_define_timespan<Timespan::from_years>(value, type, name);
}

DefineManager::DefineManager()
  : // Date
   start_date { 1836, 1, 1 },
   end_date { 1936, 1, 1 },

   // Country
   great_power_rank { 8 },
   lose_great_power_grace_days { Timespan::from_years(1) },
   secondary_power_rank { 16 },
   country_investment_industrial_score_factor { 1 }

   // Economy

   // Military

   // Diplomacy

   // Pops

   // Ai

   // Graphics

   {}

bool DefineManager::add_define(std::string_view name, std::string_view value, Define::Type type) {
   if (name.empty()) {
      Logger::error("Invalid define identifier - empty!");
      return false;
   }

   if (value.empty()) {
      Logger::error("Invalid define value for \"", name, "\" - empty!");
      return false;
   }

   return defines.add_item({ name, value, type }, duplicate_warning_callback);
}

bool DefineManager::in_game_period(Date date) const {
   return date.in_range(start_date, end_date);
}

bool DefineManager::load_defines_file(ast::NodeCPtr root) {
   using enum Define::Type;

   bool ret = expect_dictionary_keys(
      "defines", ONE_EXACTLY, expect_dictionary([this](std::string_view key, ast::NodeCPtr value) -> bool {

         const Define::Type type = Define::string_to_type(key);

         if (type != Unknown) {

            return expect_dictionary_reserve_length(
               defines,
               [this, type](std::string_view inner_key, ast::NodeCPtr value) -> bool {
                  return expect_identifier_or_string(
                     [this, &inner_key, type](std::string_view value) -> bool {
                        return add_define(inner_key, value, type);
                     }
                  )(value);
               }
            )(value);

         } else if (key == "start_date" || key == "end_date") {

            return expect_identifier_or_string(
               [this, &key](std::string_view value) -> bool {
                  return add_define(key, value, Date);
               }
            )(value);

         } else {

            Logger::error("Invalid define type - \"", key, "\"");
            return false;

         }
      })
   )(root);

   lock_defines();

   // Date
   ret &= load_define(start_date, Date, "start_date");
   ret &= load_define(end_date, Date, "end_date");

   // Country
   ret &= load_define(great_power_rank, Country, "GREAT_NATIONS_COUNT");
   ret &= load_define_days(lose_great_power_grace_days, Country, "GREATNESS_DAYS");
   ret &= load_define(secondary_power_rank, Country, "COLONIAL_RANK");
   ret &= load_define(country_investment_industrial_score_factor, Country, "INVESTMENT_SCORE_FACTOR");

   // Economy

   // Military

   // Diplomacy

   // Pops

   // Ai

   // Graphics

   return ret;
}