forked from DECA/DECANFT-SC
Adding NFTs Base Template
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// SPDX-License-Identifier: GPL-3.0
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pragma solidity ^0.8.20;
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import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
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import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
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import "@openzeppelin/contracts/access/AccessControl.sol";
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/// @custom:security-contact david@neetsec.com
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contract DCO2s is ERC721, ERC721Enumerable, AccessControl {
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bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");
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uint256 private _nextTokenId;
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constructor(address defaultAdmin, address minter) ERC721("DCO2s", "DCO2") {
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_grantRole(DEFAULT_ADMIN_ROLE, defaultAdmin);
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_grantRole(MINTER_ROLE, minter);
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}
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function _baseURI() internal pure override returns (string memory) {
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return "https://gateway.decentralizedscience.org/ipfs/";
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}
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function safeMint(address to) public onlyRole(MINTER_ROLE) {
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uint256 tokenId = _nextTokenId++;
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_safeMint(to, tokenId);
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}
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// The following functions are overrides required by Solidity.
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function _update(address to, uint256 tokenId, address auth)
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internal
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override(ERC721, ERC721Enumerable)
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returns (address)
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{
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return super._update(to, tokenId, auth);
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}
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function _increaseBalance(address account, uint128 value)
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internal
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override(ERC721, ERC721Enumerable)
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{
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super._increaseBalance(account, value);
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}
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function supportsInterface(bytes4 interfaceId)
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public
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view
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override(ERC721, ERC721Enumerable, AccessControl)
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returns (bool)
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{
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return super.supportsInterface(interfaceId);
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}
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}
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