#include "../search.h"
#include <stdlib.h>

moves_t init_moves() {
  return init_moves_wcapacity(16);
}

moves_t init_moves_wcapacity(u32 capacity) {
  move_t* moves = malloc(capacity * sizeof(*moves));
  return (moves_t) {
    .moves = moves,
    .capacity = capacity,
    .length = 0,
  };
}

moves_t empty_moves() {
  return (moves_t) {
    .moves = 0,
    .capacity = 0,
    .length = 0,
  };
}

int min(int a, int b) {
  if (a > b) return b;
  return a;
}

void add_move(moves_t* moves, square_t from, square_t to) {
  if (moves->moves == 0) return;
  if (moves->length + 1 >= moves->capacity) {
    moves->capacity += min(32, moves->capacity);
    moves->moves = realloc(
      moves->moves,
      moves->capacity * sizeof(*moves->moves)
    );
  }
  moves->moves[moves->length] = (move_t){
    .from = from,
    .to = to
  };
  moves->length++;
}