#include "inventory.hpp"
#include <fmt/core.h>


namespace components {
  void Inventory::add(InventoryItem new_item) {
    for(auto &slot : items) {
      if(new_item.data["id"] == slot.data["id"]) {
        slot.count += new_item.count;
        return;
      }
    }

    items.push_back(new_item);
  }

  InventoryItem& Inventory::get(size_t at) {
    dbc::check(at < items.size(), fmt::format("inventory index {} too big", at));
    return items[at];
  }

  bool Inventory::decrease(size_t at, int count) {
    dbc::check(at < items.size(), fmt::format("inventory index {} too big", at));
    auto &slot = items[at];
    slot.count -= count;
    return slot.count > 0;
  }

  void Inventory::erase_item(size_t at) {
    dbc::check(at < items.size(), fmt::format("inventory index {} too big", at));
    items.erase(items.begin() + at);
  }

  int Inventory::item_index(std::string id) {
    for(size_t i = 0; i < items.size(); i++) {
      if(items[i].data["id"] == id) {
        return i;
      }
    }

    return -1;
  }
}
