pragma solidity ^0.8.0;





contract QuackRunners is ERC721A, Ownable, ReentrancyGuard {
  using Address for address;
  using Strings for uint;


  string  public  baseTokenURI = "https://api.moonquacks.xyz/metadata/";
  uint256 public  maxSupply = 3500;
  uint256 public  MAX_MINTS_PER_TX = 5;
  uint256 public  PUBLIC_SALE_PRICE = 0.003 ether;
  uint256 public  NUM_FREE_MINTS = 1000;
  uint256 public  MAX_FREE_PER_WALLET = 2;
  uint256 public freeAlreadyMinted = 0;
  bool public isPublicSaleActive = true;
  constructor() ERC721A("QuackRunners", "QK") {
  }


  function mint(uint256 numberOfTokens)
      external
      payable
  {
    require(isPublicSaleActive, "Sale is not open");
    require(totalSupply() + numberOfTokens < maxSupply + 1, "No more left");

    if(freeAlreadyMinted + numberOfTokens > NUM_FREE_MINTS){
        require(
            (PUBLIC_SALE_PRICE * numberOfTokens) <= msg.value,
            "Incorrect ETH value sent"
        );
    } else {
        if (balanceOf(msg.sender) + numberOfTokens > MAX_FREE_PER_WALLET) {
        require(
            (PUBLIC_SALE_PRICE * numberOfTokens) <= msg.value,
            "Incorrect ETH value sent"
        );
        require(
            numberOfTokens <= MAX_MINTS_PER_TX,
            "Max mints per transaction exceeded"
        );
        } else {
            require(
                numberOfTokens <= MAX_FREE_PER_WALLET,
                "Max mints per transaction exceeded"
            );
            freeAlreadyMinted += numberOfTokens;
        }
    }
    _safeMint(msg.sender, numberOfTokens);
  }

  function setBaseURI(string memory baseURI)
    public
    onlyOwner
  {
    baseTokenURI = baseURI;
  }

  function treasuryMint(uint quantity)
    public
    onlyOwner
  {
    require(
      quantity > 0,
      "Invalid mint amount"
    );
    require(
      totalSupply() + quantity <= maxSupply,
      "Maximum supply exceeded"
    );
    _safeMint(msg.sender, quantity);
  }

  function withdraw()
    public
    onlyOwner
    nonReentrant
  {
    Address.sendValue(payable(msg.sender), address(this).balance);
  }

  function _baseURI()
    internal
    view
    virtual
    override
    returns (string memory)
  {
    return baseTokenURI;
  }

  function setIsPublicSaleActive(bool _isPublicSaleActive)
      external
      onlyOwner
  {
      isPublicSaleActive = _isPublicSaleActive;
  }

  function setNumFreeMints(uint256 _numfreemints)
      external
      onlyOwner
  {
      NUM_FREE_MINTS = _numfreemints;
  }

  function setSalePrice(uint256 _price)
      external
      onlyOwner
  {
      PUBLIC_SALE_PRICE = _price;
  }

  function setMaxLimitPerTransaction(uint256 _limit)
      external
      onlyOwner
  {
      MAX_MINTS_PER_TX = _limit;
  }

  function setFreeLimitPerWallet(uint256 _limit)
      external
      onlyOwner
  {
      MAX_FREE_PER_WALLET = _limit;
  }
}
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