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#pragma once

#include "openvic-simulation/modifier/Modifier.hpp"
#include "openvic-simulation/types/OrderedContainers.hpp"

namespace OpenVic {
   struct TerrainTypeManager;

   // Using HasColour rather than HasIdentifierAndColour to avoid needing virtual inheritance
   // (extending Modifier is more useful than extending HasIdentifierAndColour).
   struct TerrainType : Modifier, HasColour {
      friend struct TerrainTypeManager;

   private:
      ModifierValue PROPERTY(modifier);
      const bool PROPERTY(is_water);

      TerrainType(std::string_view new_identifier, colour_t new_colour, ModifierValue&& new_modifier, bool new_is_water);

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

   struct TerrainTypeMapping : HasIdentifier {
      friend struct TerrainTypeManager;

      using index_t = uint8_t;

   private:
      TerrainType const& PROPERTY(type);
      std::vector<index_t> PROPERTY(terrain_indices);
      const index_t PROPERTY(priority);
      const bool PROPERTY(has_texture);

      TerrainTypeMapping(
         std::string_view new_identifier, TerrainType const& new_type, std::vector<index_t>&& new_terrain_indicies,
         index_t new_priority, bool new_has_texture
      );

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

   struct TerrainTypeManager {
   private:
      using terrain_type_mappings_map_t = ordered_map<TerrainTypeMapping::index_t, size_t>;

      IdentifierRegistry<TerrainType> IDENTIFIER_REGISTRY(terrain_type);
      IdentifierRegistry<TerrainTypeMapping> IDENTIFIER_REGISTRY(terrain_type_mapping);
      terrain_type_mappings_map_t terrain_type_mappings_map;

      TerrainTypeMapping::index_t terrain_texture_limit = 0, terrain_texture_count = 0;

      NodeTools::node_callback_t _load_terrain_type_categories(ModifierManager const& modifier_manager);
      bool _load_terrain_type_mapping(std::string_view key, ast::NodeCPtr value);

   public:
      bool add_terrain_type(std::string_view identifier, colour_t colour, ModifierValue&& values, bool is_water);

      bool add_terrain_type_mapping(
         std::string_view identifier, TerrainType const* type, std::vector<TerrainTypeMapping::index_t>&& terrain_indicies,
         TerrainTypeMapping::index_t priority, bool has_texture
      );

      TerrainTypeMapping const* get_terrain_type_mapping_for(TerrainTypeMapping::index_t idx) const;

      TerrainTypeMapping::index_t get_terrain_texture_limit() const;

      bool load_terrain_types(ModifierManager const& modifier_manager, ast::NodeCPtr root);
      bool generate_modifiers(ModifierManager& modifier_manager) const;
   };
}