contract StrongNFTV2 is Context, AccessControl, Ownable, ERC1155Burnable, ERC1155Pausable {
  bytes32 public constant MINTER_ROLE = keccak256('MINTER_ROLE');
  bytes32 public constant PAUSER_ROLE = keccak256('PAUSER_ROLE');

  /**
   * @dev Grants `DEFAULT_ADMIN_ROLE`, `MINTER_ROLE`, and `PAUSER_ROLE` to the account that
   * deploys the contract.
   */
  constructor(string memory uri) public ERC1155(uri) {
    _setupRole(DEFAULT_ADMIN_ROLE, _msgSender());
    _setupRole(MINTER_ROLE, _msgSender());
    _setupRole(PAUSER_ROLE, _msgSender());
  }

  /**
   * @dev Creates `amount` new tokens for `to`, of token type `id`.
   *
   * See {ERC1155-_mint}.
   *
   * Requirements:
   *
   * - the caller must have the `MINTER_ROLE`.
   */
  function mint(
    address to,
    uint256 id,
    uint256 amount,
    bytes memory data
  ) public virtual {
    require(hasRole(MINTER_ROLE, _msgSender()), 'ERC1155: must have minter role to mint');

    _mint(to, id, amount, data);
  }

  /**
   * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] variant of {mint}.
   */
  function mintBatch(
    address to,
    uint256[] memory ids,
    uint256[] memory amounts,
    bytes memory data
  ) public virtual {
    require(hasRole(MINTER_ROLE, _msgSender()), 'ERC1155: must have minter role to mint');

    _mintBatch(to, ids, amounts, data);
  }

  /**
   * @dev Pauses all token transfers.
   *
   * See {ERC1155Pausable} and {Pausable-_pause}.
   *
   * Requirements:
   *
   * - the caller must have the `PAUSER_ROLE`.
   */
  function pause() public virtual {
    require(hasRole(PAUSER_ROLE, _msgSender()), 'ERC1155: must have pauser role to pause');

    _pause();
  }

  /**
   * @dev Unpauses all token transfers.
   *
   * See {ERC1155Pausable} and {Pausable-_unpause}.
   *
   * Requirements:
   *
   * - the caller must have the `PAUSER_ROLE`.
   */
  function unpause() public virtual {
    require(hasRole(PAUSER_ROLE, _msgSender()), 'ERC1155: must have pauser role to unpause');

    _unpause();
  }

  function _beforeTokenTransfer(
    address operator,
    address from,
    address to,
    uint256[] memory ids,
    uint256[] memory amounts,
    bytes memory data
  ) internal virtual override(ERC1155, ERC1155Pausable) {
    super._beforeTokenTransfer(operator, from, to, ids, amounts, data);
  }
}
function mint(
    address to,
    uint256 id,
    uint256 amount,
    bytes memory data
  ) public virtual {
    require(hasRole(MINTER_ROLE, _msgSender()), 'ERC1155: must have minter role to mint');

    _mint(to, id, amount, data);
  }
/**
 * @dev Creates `amount` new tokens for `to`, of token type `id`.
 *
 * See {ERC1155-_mint}.
 *
 * Requirements:
 *
 * - the caller must have the `MINTER_ROLE`.
 */