// SPDX-License-Identifier: MIT
pragma solidity 0.8.10;
import "./BEBase.sol";

contract BEPresaleBox is BEBase {
  /**
   * type of NFT the box has
   * 0: not specify
   * 1: hero
   * 2: weanpon
   * 3: chip
   * 301: chip lvl1, 302: lvl2
   */
  mapping(uint256 => uint256) public _nftType;
  constructor() ERC721("CRYPTO ELITE'S Presale BOXES", "PBOX") {}
  

  function mintBox(address to, uint256 tokenId, uint256 nftType)
    external
    virtual
    onlyRole(MINTER_ROLE)
  {
    require(!_exists(tokenId), "Must have unique tokenId");
    // We cannot just use balanceOf to create the new tokenId because tokens
    // can be burned (destroyed), so we need a separate counter.
    _nftType[tokenId] = nftType;
    _mint(to, tokenId);
  }

  function burn(address owner, uint256 tokenId)
    external
    virtual
    override
    onlyRole(BURN_ROLE)
  {
    require(_exists(tokenId), "TokenId not exists");
    require(!lockedTokens[tokenId], "Can not burn locked token");
    require(
      ownerOf(tokenId) == owner,
      "current address is not owner of this item now"
    );
    delete _nftType[tokenId];
    _burn(tokenId);
  }

  function getNftType(uint256 tokenId) external view returns (uint256) {
    return _nftType[tokenId];
  }

}