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Presale whitelisting using maps #27

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Presale whitelisting using maps #27

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39 changes: 39 additions & 0 deletions contract/SimpleNftLowerGas.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,10 @@ contract SimpleNftLowerGas is ERC721, Ownable {
bool public paused = true;
bool public revealed = false;

bool public presale = true;
mapping(address => bool) public whitelisted;
uint256 public maxPresaleMintAmount = 2;

constructor() ERC721("NAME", "SYMBOL") {
setHiddenMetadataUri("ipfs://__CID__/hidden.json");
}
Expand All @@ -56,6 +60,15 @@ contract SimpleNftLowerGas is ERC721, Ownable {
require(!paused, "The contract is paused!");
require(msg.value >= cost * _mintAmount, "Insufficient funds!");

if (presale) { //Murf dont allow minting if presale is set and buyer is not in whitelisted map
if ( !isInWhiteList(msg.sender)) {
revert("Buyer is not in Whitelist for Pre-Sale");
}
// //BM check if already bought
if ( balanceOf(msg.sender)+_mintAmount > maxPresaleMintAmount)
revert("Buyer has already pre-sale minted max tokens");
}

_mintLoop(msg.sender, _mintAmount);
}

Expand Down Expand Up @@ -164,4 +177,30 @@ contract SimpleNftLowerGas is ERC721, Ownable {
function _baseURI() internal view virtual override returns (string memory) {
return uriPrefix;
}

//Murf Whitelist Functions
function setPresale(bool _state) public onlyOwner {
presale = _state;
}

function setMaxPresaleMintAmount(uint256 _max) public onlyOwner {
maxPresaleMintAmount = _max;
}

function addToWhiteList(address _addr) public onlyOwner {
whitelisted[_addr] = true;
}

function addArrayToWhiteList(address[] memory _addrs) public onlyOwner {
for (uint256 i=0;i< _addrs.length;i++)
whitelisted[_addrs[i]] = true;
}

function removeFromWhiteList(address _addr) public onlyOwner {
whitelisted[_addr] = false;
}

function isInWhiteList(address _addr) private view returns (bool) {
return whitelisted[_addr] || _addr == owner();
}
}