83 lines
2.8 KiB
Solidity
83 lines
2.8 KiB
Solidity
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pragma solidity 0.6.12;
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// This is adapted from https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.0.0/contracts/presets/ERC721PresetMinterPauserAutoId.sol
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import "./utils/AccessControl.sol";
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import "@openzeppelin/contracts/GSN/Context.sol";
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import "@openzeppelin/contracts/utils/Counters.sol";
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import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
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import "@openzeppelin/contracts/token/ERC721/ERC721Burnable.sol";
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import "@openzeppelin/contracts/token/ERC721/ERC721Pausable.sol";
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contract ERC721MinterBurnerPauser is Context, AccessControl, ERC721Burnable, ERC721Pausable {
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bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");
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bytes32 public constant PAUSER_ROLE = keccak256("PAUSER_ROLE");
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/**
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* @dev Grants `DEFAULT_ADMIN_ROLE` and `MINTER_ROLE`to the account that
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* deploys the contract.
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*
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* Token URIs will be autogenerated based on `baseURI` and their token IDs.
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* See {ERC721-tokenURI}.
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*/
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constructor(string memory name, string memory symbol, string memory baseURI) public ERC721(name, symbol) {
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_setupRole(DEFAULT_ADMIN_ROLE, _msgSender());
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_setupRole(MINTER_ROLE, _msgSender());
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_setupRole(PAUSER_ROLE, _msgSender());
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_setBaseURI(baseURI);
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}
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/**
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* @dev Creates a new token for `to`. Its token ID will be automatically
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* assigned (and available on the emitted {Transfer} event), and the token
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* URI autogenerated based on the base URI passed at construction.
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*
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* See {ERC721-_mint}.
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*
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* Requirements:
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*
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* - the caller must have the `MINTER_ROLE`.
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*/
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function mint(address to, uint256 tokenId, string memory _data) public {
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require(hasRole(MINTER_ROLE, _msgSender()), "ERC721MinterBurnerPauser: must have minter role to mint");
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_mint(to, tokenId);
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_setTokenURI(tokenId, _data);
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}
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/**
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* @dev Pauses all token transfers.
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*
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* See {ERC721Pausable} and {Pausable-_pause}.
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*
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* Requirements:
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*
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* - the caller must have the `PAUSER_ROLE`.
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*/
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function pause() public {
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require(hasRole(PAUSER_ROLE, _msgSender()), "ERC721MinterBurnerPauser: must have pauser role to pause");
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_pause();
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}
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/**
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* @dev Unpauses all token transfers.
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*
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* See {ERC721Pausable} and {Pausable-_unpause}.
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*
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* Requirements:
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*
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* - the caller must have the `PAUSER_ROLE`.
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*/
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function unpause() public {
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require(hasRole(PAUSER_ROLE, _msgSender()), "ERC721MinterBurnerPauser: must have pauser role to unpause");
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_unpause();
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}
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function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal override(ERC721, ERC721Pausable) {
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super._beforeTokenTransfer(from, to, tokenId);
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}
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}
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