#include <cstdint>

#include "sqrt.hpp"

#include "gen/pokemon/moves.hpp"
#include "pokemon.hpp"

struct determinant_values_t {
  uint16_t dvs;

  inline constexpr uint8_t attack()
  {
    return (dvs >> 12) & 0b1111;
  }

  inline constexpr uint8_t defense()
  {
    return (dvs >> 8) & 0b1111;
  }

  inline constexpr uint8_t speed()
  {
    return (dvs >> 4) & 0b1111;
  }

  inline constexpr uint8_t special()
  {
    return (dvs >> 0) & 0b1111;
  }

  inline constexpr uint8_t hit_points()
  {
    return ((attack()  & 1) << 3)
         | ((defense() & 1) << 2)
         | ((speed()   & 1) << 1)
         | ((special() & 1) << 0);
  }
};

struct stat_experience_t {
  uint16_t hit_points;
  uint16_t attack;
  uint16_t defense;
  uint16_t speed;
  uint16_t special;
};

// unlike base_stat_values, stat_values is uint16_t
struct stat_values_t {
  union {
    struct {
      uint16_t hit_points;
      uint16_t attack;
      uint16_t defense;
      uint16_t speed;
      uint16_t special;
    };
    uint16_t value[5];
  };
};

static_assert((sizeof (stat_values_t)) == 10);

struct pokemon_instance_t {
  enum pokemon_t::pokemon species;
  uint8_t * nickname[12];
  uint8_t level;
  uint32_t experience; // total experience
  determinant_values_t determinant_values;
  stat_values_t stat_values;
  stat_experience_t stat_experience;
  enum move_t::move moves[4];
  uint16_t current_hit_points;
  // missing attributes:
  // - status modifiers (burn, poison, etc...)
  // "fluff" attributes:
  // - id number
  // - original trainer

  constexpr inline uint16_t determine_stat(enum stat_t stat);

  constexpr inline void learn_move(enum move_t::move move, uint32_t index);
};