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#pragma once

#include "openvic-simulation/misc/Modifier.hpp"
#include "openvic-simulation/types/Date.hpp"
#include "openvic-simulation/military/Unit.hpp"
#include "openvic-simulation/economy/BuildingType.hpp"
#include <cstdint>

namespace OpenVic {
   struct TechnologyFolder : HasIdentifier {
      friend struct TechnologyManager;

   private:
      TechnologyFolder(std::string_view new_identifier);

   public:
      TechnologyFolder(TechnologyFolder&&) = default;
   };

   struct TechnologyArea : HasIdentifier {
      friend struct TechnologyManager;

   private:
      TechnologyFolder const& PROPERTY(folder);

      TechnologyArea(std::string_view new_identifier, TechnologyFolder const& new_folder);

   public:
      TechnologyArea(TechnologyArea&&) = default;
   };

   struct Technology : Modifier {
      friend struct TechnologyManager;

      using unit_set_t = std::unordered_set<Unit const*>;
      using building_set_t = std::unordered_set<BuildingType const*>;

   private:
      TechnologyArea const& PROPERTY(area);
      const Date::year_t PROPERTY(year);
      const fixed_point_t PROPERTY(cost);
      const bool PROPERTY(unciv_military);
      const uint8_t PROPERTY(unit);
      const unit_set_t PROPERTY(activated_buildings);
      const building_set_t PROPERTY(activated_units);

      //TODO: implement rules/modifiers and ai_chance

      Technology(
         std::string_view new_identifier, TechnologyArea const& new_area, Date::year_t new_year, fixed_point_t new_cost,
         bool new_unciv_military, uint8_t new_unit, unit_set_t&& new_activated_units,
         building_set_t&& new_activated_buildings, ModifierValue&& new_values
      );

   public:
      Technology(Technology&&) = default;
   };

   struct TechnologySchool : Modifier {
      friend struct TechnologyManager;

   private:
      TechnologySchool(std::string_view new_identifier, ModifierValue&& new_values);
   };

   struct TechnologyManager {
      IdentifierRegistry<TechnologyFolder> technology_folders;
      IdentifierRegistry<TechnologyArea> technology_areas;
      IdentifierRegistry<Technology> technologies;
      IdentifierRegistry<TechnologySchool> technology_schools;

   public:
      TechnologyManager();

      bool add_technology_folder(std::string_view identifier);
      IDENTIFIER_REGISTRY_ACCESSORS(technology_folder)

      bool add_technology_area(std::string_view identifier, TechnologyFolder const* folder);
      IDENTIFIER_REGISTRY_ACCESSORS(technology_area)

      bool add_technology(
         std::string_view identifier, TechnologyArea const* area, Date::year_t year, fixed_point_t cost,
         bool unciv_military, uint8_t unit, Technology::unit_set_t&& activated_units,
         Technology::building_set_t&& activated_buildings, ModifierValue&& values);
      IDENTIFIER_REGISTRY_ACCESSORS_CUSTOM_PLURAL(technology, technologies)

      bool add_technology_school(std::string_view identifier, ModifierValue&& values);
      IDENTIFIER_REGISTRY_ACCESSORS(technology_school)

      bool load_technology_file_areas(ast::NodeCPtr root); // common/technology.txt
      bool load_technology_file_schools(ModifierManager const& modifier_manager, ast::NodeCPtr root); // also common/technology.txt
      bool load_technologies_file(
         ModifierManager const& modifier_manager, UnitManager const& unit_manager,
         BuildingTypeManager const& building_type_manager, ast::NodeCPtr root
      ); // technologies/*.txt
      bool generate_modifiers(ModifierManager& modifier_manager);
   };
}