Created
January 21, 2022 14:13
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| // SPDX-License-Identifier: MIT | |
| pragma solidity ^0.8.10; | |
| import 'solmate/tokens/ERC721.sol'; | |
| contract NFTBillboard is ERC721('NFT Billboard', 'BNFT') { | |
| error Unauthorized(); | |
| error TokenNotFound(); | |
| struct NFT { | |
| ERC721 tokenContract; | |
| uint256 tokenId; | |
| } | |
| mapping(uint256 => NFT) getBillboard; | |
| constructor() { | |
| for (uint256 i = 1; i < 10; i++) { | |
| _mint(msg.sender, i); | |
| } | |
| } | |
| function updateBillboard(uint256 id, NFT memory newToken) public payable { | |
| if (ownerOf[id] != msg.sender) revert Unauthorized(); | |
| getBillboard[id] = newToken; | |
| } | |
| function tokenURI(uint256 id) public view override returns (string memory) { | |
| NFT memory nft = getBillboard[id]; | |
| if (address(nft.tokenContract) == address(0)) revert TokenNotFound(); | |
| return nft.tokenContract.tokenURI(nft.tokenId); | |
| } | |
| } |
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