path: root/src/openvic-simulation/map/ProvinceInstance.cpp

#include "ProvinceInstance.hpp"

#include "openvic-simulation/country/CountryInstance.hpp"
#include "openvic-simulation/history/ProvinceHistory.hpp"
#include "openvic-simulation/map/Crime.hpp"
#include "openvic-simulation/map/ProvinceDefinition.hpp"
#include "openvic-simulation/map/Region.hpp"
#include "openvic-simulation/map/TerrainType.hpp"
#include "openvic-simulation/military/UnitInstanceGroup.hpp"
#include "openvic-simulation/misc/Define.hpp"
#include "openvic-simulation/modifier/StaticModifierCache.hpp"
#include "openvic-simulation/politics/Ideology.hpp"

using namespace OpenVic;

ProvinceInstance::ProvinceInstance(
   ProvinceDefinition const& new_province_definition, decltype(pop_type_distribution)::keys_t const& pop_type_keys,
   decltype(ideology_distribution)::keys_t const& ideology_keys
) : HasIdentifierAndColour { new_province_definition },
   province_definition { new_province_definition },
   terrain_type { new_province_definition.get_default_terrain_type() },
   life_rating { 0 },
   colony_status { colony_status_t::STATE },
   state { nullptr },
   owner { nullptr },
   controller { nullptr },
   cores {},
   modifier_sum {},
   event_modifiers {},
   slave { false },
   crime { nullptr },
   rgo { nullptr },
   buildings { "buildings", false },
   armies {},
   navies {},
   pops {},
   total_population { 0 },
   pop_type_distribution { &pop_type_keys },
   ideology_distribution { &ideology_keys },
   culture_distribution {},
   religion_distribution {},
   max_supported_regiments { 0 } {}

bool ProvinceInstance::set_owner(CountryInstance* new_owner) {
   bool ret = true;

   if (owner != new_owner) {
      if (owner != nullptr) {
         ret &= owner->remove_owned_province(*this);
      }

      owner = new_owner;

      if (owner != nullptr) {
         ret &= owner->add_owned_province(*this);
      }
   }

   return ret;
}

bool ProvinceInstance::set_controller(CountryInstance* new_controller) {
   bool ret = true;

   if (controller != new_controller) {
      if (controller != nullptr) {
         ret &= controller->remove_controlled_province(*this);
      }

      controller = new_controller;

      if (controller != nullptr) {
         ret &= controller->add_controlled_province(*this);
      }
   }

   return ret;
}

bool ProvinceInstance::add_core(CountryInstance& new_core) {
   if (cores.emplace(&new_core).second) {
      return new_core.add_core_province(*this);
   } else {
      Logger::error(
         "Attempted to add core \"", new_core.get_identifier(), "\" to country ", get_identifier(), ": already exists!"
      );
      return false;
   }
}

bool ProvinceInstance::remove_core(CountryInstance& core_to_remove) {
   if (cores.erase(&core_to_remove) > 0) {
      return core_to_remove.remove_core_province(*this);
   } else {
      Logger::error(
         "Attempted to remove core \"", core_to_remove.get_identifier(), "\" from country ", get_identifier(),
         ": does not exist!"
      );
      return false;
   }
}

bool ProvinceInstance::is_owner_core() const {
   return owner != nullptr && cores.contains(owner);
}

bool ProvinceInstance::expand_building(size_t building_index) {
   BuildingInstance* building = buildings.get_item_by_index(building_index);
   if (building == nullptr) {
      Logger::error("Trying to expand non-existent building index ", building_index, " in province ", get_identifier());
      return false;
   }
   return building->expand();
}

void ProvinceInstance::_add_pop(Pop&& pop) {
   pop.set_location(*this);
   pops.insert(std::move(pop));
}

bool ProvinceInstance::add_pop(Pop&& pop) {
   if (!province_definition.is_water()) {
      _add_pop(std::move(pop));
      return true;
   } else {
      Logger::error("Trying to add pop to water province ", get_identifier());
      return false;
   }
}

bool ProvinceInstance::add_pop_vec(std::vector<PopBase> const& pop_vec) {
   if (!province_definition.is_water()) {
      reserve_more(pops, pop_vec.size());
      for (PopBase const& pop : pop_vec) {
         _add_pop(Pop { pop, *ideology_distribution.get_keys() });
      }
      return true;
   } else {
      Logger::error("Trying to add pop vector to water province ", get_identifier());
      return false;
   }
}

size_t ProvinceInstance::get_pop_count() const {
   return pops.size();
}

/* REQUIREMENTS:
 * MAP-65, MAP-68, MAP-70, MAP-234
 */
void ProvinceInstance::_update_pops(DefineManager const& define_manager) {
   total_population = 0;
   average_literacy = 0;
   average_consciousness = 0;
   average_militancy = 0;

   pop_type_distribution.clear();
   ideology_distribution.clear();
   culture_distribution.clear();
   religion_distribution.clear();

   max_supported_regiments = 0;

   using enum colony_status_t;

   const fixed_point_t pop_size_per_regiment_multiplier =
      colony_status == PROTECTORATE ? define_manager.get_pop_size_per_regiment_protectorate_multiplier()
      : colony_status == COLONY ? define_manager.get_pop_size_per_regiment_colony_multiplier()
      : is_owner_core() ? fixed_point_t::_1() : define_manager.get_pop_size_per_regiment_non_core_multiplier();

   for (Pop& pop : pops) {
      pop.update_gamestate(define_manager, owner, pop_size_per_regiment_multiplier);

      total_population += pop.get_size();
      average_literacy += pop.get_literacy();
      average_consciousness += pop.get_consciousness();
      average_militancy += pop.get_militancy();

      pop_type_distribution[pop.get_type()] += pop.get_size();
      ideology_distribution += pop.get_ideologies();
      culture_distribution[&pop.get_culture()] += pop.get_size();
      religion_distribution[&pop.get_religion()] += pop.get_size();

      max_supported_regiments += pop.get_max_supported_regiments();
   }

   if (total_population > 0) {
      average_literacy /= total_population;
      average_consciousness /= total_population;
      average_militancy /= total_population;
   }
}

void ProvinceInstance::update_modifier_sum(Date today, StaticModifierCache const& static_modifier_cache) {
   // Update sum of direct province modifiers
   modifier_sum.clear();

   const ModifierSum::modifier_source_t province_source { this };

   // Erase expired event modifiers and add non-expired ones to the sum
   std::erase_if(event_modifiers, [this, today, &province_source](ModifierInstance const& modifier) -> bool {
      if (today <= modifier.get_expiry_date()) {
         modifier_sum.add_modifier(*modifier.get_modifier(), province_source);
         return false;
      } else {
         return true;
      }
   });

   // Add static modifiers
   if (is_owner_core()) {
      modifier_sum.add_modifier(static_modifier_cache.get_core(), province_source);
   }
   if (province_definition.is_water()) {
      modifier_sum.add_modifier(static_modifier_cache.get_sea_zone(), province_source);
   } else {
      modifier_sum.add_modifier(static_modifier_cache.get_land_province(), province_source);

      if (province_definition.is_coastal()) {
         modifier_sum.add_modifier(static_modifier_cache.get_coastal(), province_source);
      } else {
         modifier_sum.add_modifier(static_modifier_cache.get_non_coastal(), province_source);
      }

      // TODO - overseas, blockaded, no_adjacent_controlled, has_siege, occupied, nationalism, infrastructure
   }

   for (BuildingInstance const& building : buildings.get_items()) {
      modifier_sum.add_modifier(building.get_building_type(), province_source);
   }

   modifier_sum.add_modifier_nullcheck(crime, province_source);

   modifier_sum.add_modifier_nullcheck(province_definition.get_continent(), province_source);

   modifier_sum.add_modifier_nullcheck(province_definition.get_climate(), province_source);

   modifier_sum.add_modifier_nullcheck(terrain_type, province_source);

   if constexpr (!ADD_OWNER_CONTRIBUTION) {
      if (owner != nullptr) {
         owner->contribute_province_modifier_sum(modifier_sum);
      }
   }
}

void ProvinceInstance::contribute_country_modifier_sum(ModifierSum const& owner_modifier_sum) {
   modifier_sum.add_modifier_sum_exclude_source(owner_modifier_sum, this);
}

fixed_point_t ProvinceInstance::get_modifier_effect_value(ModifierEffect const& effect) const {
   if constexpr (ADD_OWNER_CONTRIBUTION) {
      return modifier_sum.get_effect(effect);
   } else {
      using enum ModifierEffect::target_t;

      if (owner != nullptr) {
         if (ModifierEffect::excludes_targets(effect.get_targets(), PROVINCE)) {
            // Non-province targeted effects are already added to the country modifier sum
            return owner->get_modifier_effect_value(effect);
         } else {
            // Province-targeted effects aren't passed to the country modifier sum
            return owner->get_modifier_effect_value(effect) + modifier_sum.get_effect(effect);
         }
      } else {
         return modifier_sum.get_effect(effect);
      }
   }
}

fixed_point_t ProvinceInstance::get_modifier_effect_value_nullcheck(ModifierEffect const* effect) const {
   if (effect != nullptr) {
      return get_modifier_effect_value(*effect);
   } else {
      return fixed_point_t::_0();
   }
}

void ProvinceInstance::push_contributing_modifiers(
   ModifierEffect const& effect, std::vector<ModifierSum::modifier_entry_t>& contributions
) const {
   if constexpr (ADD_OWNER_CONTRIBUTION) {
      modifier_sum.push_contributing_modifiers(effect, contributions);
   } else {
      using enum ModifierEffect::target_t;

      if (owner != nullptr) {
         if (ModifierEffect::excludes_targets(effect.get_targets(), PROVINCE)) {
            // Non-province targeted effects are already added to the country modifier sum
            owner->push_contributing_modifiers(effect, contributions);
         } else {
            // Province-targeted effects aren't passed to the country modifier sum
            modifier_sum.push_contributing_modifiers(effect, contributions);
            owner->push_contributing_modifiers(effect, contributions);
         }
      } else {
         modifier_sum.push_contributing_modifiers(effect, contributions);
      }
   }
}

std::vector<ModifierSum::modifier_entry_t> ProvinceInstance::get_contributing_modifiers(ModifierEffect const& effect) const {
   if constexpr (ADD_OWNER_CONTRIBUTION) {
      return modifier_sum.get_contributing_modifiers(effect);
   } else {
      std::vector<ModifierSum::modifier_entry_t> contributions;

      push_contributing_modifiers(effect, contributions);

      return contributions;
   }
}

void ProvinceInstance::update_gamestate(Date today, DefineManager const& define_manager) {
   for (BuildingInstance& building : buildings.get_items()) {
      building.update_gamestate(today);
   }
   _update_pops(define_manager);
}

void ProvinceInstance::tick(Date today) {
   for (BuildingInstance& building : buildings.get_items()) {
      building.tick(today);
   }
}

template<UnitType::branch_t Branch>
bool ProvinceInstance::add_unit_instance_group(UnitInstanceGroup<Branch>& group) {
   if (get_unit_instance_groups<Branch>().emplace(static_cast<UnitInstanceGroupBranched<Branch>*>(&group)).second) {
      return true;
   } else {
      Logger::error(
         "Trying to add already-existing ", Branch == UnitType::branch_t::LAND ? "army" : "navy", " ",
         group.get_name(), " to province ", get_identifier()
      );
      return false;
   }
}

template<UnitType::branch_t Branch>
bool ProvinceInstance::remove_unit_instance_group(UnitInstanceGroup<Branch>& group) {
   if (get_unit_instance_groups<Branch>().erase(static_cast<UnitInstanceGroupBranched<Branch>*>(&group)) > 0) {
      return true;
   } else {
      Logger::error(
         "Trying to remove non-existent ", Branch == UnitType::branch_t::LAND ? "army" : "navy", " ",
         group.get_name(), " from province ", get_identifier()
      );
      return false;
   }
}

template bool ProvinceInstance::add_unit_instance_group(UnitInstanceGroup<UnitType::branch_t::LAND>&);
template bool ProvinceInstance::add_unit_instance_group(UnitInstanceGroup<UnitType::branch_t::NAVAL>&);
template bool ProvinceInstance::remove_unit_instance_group(UnitInstanceGroup<UnitType::branch_t::LAND>&);
template bool ProvinceInstance::remove_unit_instance_group(UnitInstanceGroup<UnitType::branch_t::NAVAL>&);

bool ProvinceInstance::setup(BuildingTypeManager const& building_type_manager) {
   if (buildings_are_locked()) {
      Logger::error("Cannot setup province ", get_identifier(), " - buildings already locked!");
      return false;
   }

   bool ret = true;

   if (!province_definition.is_water()) {
      if (building_type_manager.building_types_are_locked()) {
         buildings.reserve(building_type_manager.get_province_building_types().size());

         for (BuildingType const* building_type : building_type_manager.get_province_building_types()) {
            ret &= buildings.add_item({ *building_type });
         }
      } else {
         Logger::error("Cannot generate buildings until building types are locked!");
         ret = false;
      }
   }

   lock_buildings();

   return ret;
}

bool ProvinceInstance::apply_history_to_province(ProvinceHistoryEntry const& entry, CountryInstanceManager& country_manager) {
   bool ret = true;

   constexpr auto set_optional = []<typename T>(T& target, std::optional<T> const& source) {
      if (source) {
         target = *source;
      }
   };

   if (entry.get_owner()) {
      ret &= set_owner(&country_manager.get_country_instance_from_definition(**entry.get_owner()));
   }
   if (entry.get_controller()) {
      ret &= set_controller(&country_manager.get_country_instance_from_definition(**entry.get_controller()));
   }
   set_optional(colony_status, entry.get_colonial());
   set_optional(slave, entry.get_slave());
   for (auto const& [country, add] : entry.get_cores()) {
      if (add) {
         ret &= add_core(country_manager.get_country_instance_from_definition(*country));
      } else {
         ret &= remove_core(country_manager.get_country_instance_from_definition(*country));
      }
   }
   set_optional(rgo, entry.get_rgo());
   set_optional(life_rating, entry.get_life_rating());
   set_optional(terrain_type, entry.get_terrain_type());
   for (auto const& [building, level] : entry.get_province_buildings()) {
      BuildingInstance* existing_entry = buildings.get_item_by_identifier(building->get_identifier());
      if (existing_entry != nullptr) {
         existing_entry->set_level(level);
      } else {
         Logger::error(
            "Trying to set level of non-existent province building ", building->get_identifier(), " to ", level,
            " in province ", get_identifier()
         );
         ret = false;
      }
   }
   // TODO: load state buildings - entry.get_state_buildings()
   // TODO: party loyalties for each POP when implemented on POP side - entry.get_party_loyalties()
   return ret;
}

void ProvinceInstance::setup_pop_test_values(IssueManager const& issue_manager) {
   for (Pop& pop : pops) {
      pop.setup_pop_test_values(issue_manager);
   }
}