// SPDX-License-Identifier: MIT

pragma solidity >=0.7.6 <0.8.0;

/**
 * @title ERC721 Non-Fungible Token Standard, optional extension: Mintable.
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Mintable {
    /**
     * Unsafely mints a token.
     * @dev Reverts if `to` is the zero address.
     * @dev Reverts if `tokenId` has already been minted.
     * @dev Emits an {IERC721-Transfer} event from the zero address.
     * @param to Address of the new token owner.
     * @param tokenId Identifier of the token to mint.
     */
    function mint(address to, uint256 tokenId) external;

    /**
     * Unsafely mints a batch of tokens.
     * @dev Reverts if `to` is the zero address.
     * @dev Reverts if one of `tokenIds` has already been minted.
     * @dev Emits an {IERC721-Transfer} event from the zero address for each of `tokenIds`.
     * @param to Address of the new tokens owner.
     * @param tokenIds Identifiers of the tokens to mint.
     */
    function batchMint(address to, uint256[] calldata tokenIds) external;

    /**
     * Safely mints a token.
     * @dev Reverts if `to` is the zero address.
     * @dev Reverts if `tokenId` has already ben minted.
     * @dev Reverts if `to` is a contract and the call to {IERC721Receiver-onERC721Received} fails or is refused.
     * @dev Emits an {IERC721-Transfer} event from the zero address.
     * @param to Address of the new token owner.
     * @param tokenId Identifier of the token to mint.
     * @param data Optional data to pass along to the receiver call.
     */
    function safeMint(
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;
}