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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;
import "@openzeppelin/contracts@4.4.2/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts@4.4.2/utils/Counters.sol";
contract dynBloom is ERC721, ERC721URIStorage {
using Counters for Counters.Counter;
Counters.Counter private _tokenIdCounter;
// Metadata information for each stage of the NFT on IPFS.
string[] IpfsUri = [
"https://ipfs.io/ipfs/QmYaTsyxTDnrG4toc8721w62rL4ZBKXQTGj9c9Rpdrntou/seed.json",
"https://ipfs.io/ipfs/QmYaTsyxTDnrG4toc8721w62rL4ZBKXQTGj9c9Rpdrntou/purple-sprout.json",
"https://ipfs.io/ipfs/QmYaTsyxTDnrG4toc8721w62rL4ZBKXQTGj9c9Rpdrntou/purple-blooms.json"
];
constructor() ERC721("dNFTs", "dNFT") {
}
function safeMint(address to) public {
uint256 tokenId = _tokenIdCounter.current();
_tokenIdCounter.increment();
_safeMint(to, tokenId);
_setTokenURI(tokenId, IpfsUri[0]);
}
function growFlower(uint256 _tokenId) public {
if(flowerStage(_tokenId) >= 2){return;}
// Get the current stage of the flower and add 1
uint256 newVal = flowerStage(_tokenId) + 1;
// store the new URI
string memory newUri = IpfsUri[newVal];
// Update the URI
_setTokenURI(_tokenId, newUri);
}
/*
********************
* HELPER FUNCITONS *
********************
*/
// determin the stage of the flower growth
function flowerStage(uint256 _tokenId) public view returns (uint256) {
string memory _uri = tokenURI(_tokenId);
// Seed
if (compareStrings(_uri, IpfsUri[0])) {
return 0;
}
// Sprout
if (
compareStrings(_uri, IpfsUri[1])
) {
return 1;
}
// Must be a Bloom
return 2;
}
// helper function to compare strings
function compareStrings(string memory a, string memory b)
public
pure
returns (bool)
{
return (keccak256(abi.encodePacked((a))) ==
keccak256(abi.encodePacked((b))));
}
// The following functions is an override required by Solidity.
function _burn(uint256 tokenId)
internal
override(ERC721, ERC721URIStorage)
{
super._burn(tokenId);
}
// The following functions is an override required by Solidity.
function tokenURI(uint256 tokenId)
public
view
override(ERC721, ERC721URIStorage)
returns (string memory)
{
return super.tokenURI(tokenId);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;
import "@openzeppelin/contracts@4.4.2/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts@4.4.2/utils/Counters.sol";
contract dynBloom is ERC721, ERC721URIStorage {
using Counters for Counters.Counter;
Counters.Counter private _tokenIdCounter;
// Metadata information for each stage of the NFT on IPFS.
string[] IpfsUri = [
"https://ipfs.io/ipfs/QmYaTsyxTDnrG4toc8721w62rL4ZBKXQTGj9c9Rpdrntou/seed.json",
"https://ipfs.io/ipfs/QmYaTsyxTDnrG4toc8721w62rL4ZBKXQTGj9c9Rpdrntou/purple-sprout.json",
"https://ipfs.io/ipfs/QmYaTsyxTDnrG4toc8721w62rL4ZBKXQTGj9c9Rpdrntou/purple-blooms.json"
];
uint256 lastTimeStamp;
uint256 interval;
constructor(uint _interval) ERC721("dNFTs", "dNFT") {
interval = _interval;
lastTimeStamp = block.timestamp;
}
function checkUpkeep(bytes calldata /* checkData */) external view returns (bool upkeepNeeded, bytes memory /* performData */) {
upkeepNeeded = (block.timestamp - lastTimeStamp) > interval;
// We don't use the checkData in this example. The checkData is defined when the Upkeep was registered.
}
function performUpkeep(bytes calldata /* performData */) external {
//We highly recommend revalidating the upkeep in the performUpkeep function
if ((block.timestamp - lastTimeStamp) > interval ) {
lastTimeStamp = block.timestamp;
growFlower(0);
}
// We don't use the performData in this example. The performData is generated by the Keeper's call to your checkUpkeep function
}
function safeMint(address to) public {
uint256 tokenId = _tokenIdCounter.current();
_tokenIdCounter.increment();
_safeMint(to, tokenId);
_setTokenURI(tokenId, IpfsUri[0]);
}
function growFlower(uint256 _tokenId) public {
if(flowerStage(_tokenId) >= 2){return;}
// Get the current stage of the flower and add 1
uint256 newVal = flowerStage(_tokenId) + 1;
// store the new URI
string memory newUri = IpfsUri[newVal];
// Update the URI
_setTokenURI(_tokenId, newUri);
}
/*
********************
* HELPER FUNCITONS *
********************
*/
// determin the stage of the flower growth
function flowerStage(uint256 _tokenId) public view returns (uint256) {
string memory _uri = tokenURI(_tokenId);
// Seed
if (compareStrings(_uri, IpfsUri[0])) {
return 0;
}
// Sprout
if (
compareStrings(_uri, IpfsUri[1])
) {
return 1;
}
// Must be a Bloom
return 2;
}
// helper function to compare strings
function compareStrings(string memory a, string memory b)
public
pure
returns (bool)
{
return (keccak256(abi.encodePacked((a))) ==
keccak256(abi.encodePacked((b))));
}
// The following functions is an override required by Solidity.
function _burn(uint256 tokenId)
internal
override(ERC721, ERC721URIStorage)
{
super._burn(tokenId);
}
// The following functions is an override required by Solidity.
function tokenURI(uint256 tokenId)
public
view
override(ERC721, ERC721URIStorage)
returns (string memory)
{
return super.tokenURI(tokenId);
}
}
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