Entregavel ERC721 de thiago victoriano feito

2023.1/ThiagoVictoriano/ERC721Capped/ERC721Capped.sol

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+// SPDX-License-Identifier: MIT
+
+pragma solidity ^0.8.0;
+
+import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC721/ERC721.sol";
+import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/access/Ownable.sol";
+
+contract ERC721Capped is ERC721, Ownable{
+    uint64 capac;
+    uint tokensMade;
+    bool mint;
+    uint price;
+
+    constructor(string memory name, string memory symbol, uint64 cap) ERC721(name, symbol) {
+        capac = cap;
+        tokensMade = 0;
+        mint = false;
+        price = 0;
+    }
+
+    function getTotalSupply() public view returns(uint){
+        return(tokensMade);
+    }
+
+    function getBalance() public view returns(uint){
+        return(address(this).balance);
+    }
+
+    function _createNFT() internal{
+        require (tokensMade < capac);
+        tokensMade++;
+        _safeMint(msg.sender, tokensMade);
+    }
+
+    function ownerMint() external onlyOwner(){
+        _createNFT();
+    }
+
+    function publicMint() external payable{
+        require(msg.value >= price);
+        require (mint == true);
+        _createNFT();
+    }
+
+    function setMintPrice(uint _newPrice) public onlyOwner{
+        price = _newPrice;
+    }
+
+    function openSales(uint _newPrice) external onlyOwner{
+        mint = true;
+        setMintPrice(_newPrice);
+    }
+
+    function closeSales() external onlyOwner{
+        mint = false;
+    }
+
+    function withdraw() external onlyOwner{
+        address payable _owner = payable(address(uint160(owner())));
+        _owner.transfer(address(this).balance);
+    }
+}