Bossy Baddies

// SPDX-License-Identifier: MIT
pragma solidity 0.8.12;

import "https://github.com/chiru-labs/ERC721A/blob/main/contracts/ERC721A.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol";

contract BossyBaddies is ERC721A, Ownable
{
    // using Strings for string;

    uint16 public constant MAX_TOKENS = 2222;
    uint16 public PRESALE_LIMIT = 2222;
    uint16 public presaleTokensSold = 0;
    uint16 public constant NUMBER_RESERVED_TOKENS = 50;
    uint256 public PRICE = 100000000000000000; //0.1 eth
    uint16 public perAddressLimit = 2;
    
    bool public saleIsActive = false;
    bool public preSaleIsActive = false;
    bool public whitelist = true;
    bool public revealed = false;

    uint16 public reservedTokensMinted = 0;
    string private _baseTokenURI;
    string public notRevealedUri;
    bytes32 root;
    mapping(address => uint16) public addressMintedBalance;

    constructor() ERC721A("Bossy Baddies", "BBS") {}

    function mintToken(uint16 amount, bytes32[] memory proof) external payable
    {
        require(preSaleIsActive || saleIsActive, "Sale must be active to mint");

        require(!preSaleIsActive || presaleTokensSold + amount <= PRESALE_LIMIT, "Purchase would exceed max supply");
        require(!preSaleIsActive || addressMintedBalance[msg.sender] + amount <= perAddressLimit, "Max NFT per address exceeded");
        require(!whitelist || verify(proof), "Address not whitelisted");
        
        require(amount > 0 && amount <= 5, "Max 5 NFTs per transaction");
        require(totalSupply() + amount <= MAX_TOKENS - (NUMBER_RESERVED_TOKENS - reservedTokensMinted), "Purchase would exceed max supply");
        require(msg.value >= PRICE * amount, "Not enough ETH for transaction");
        require(msg.sender == tx.origin, "No transaction from smart contracts!");
        
        if (preSaleIsActive) {
            presaleTokensSold += amount;
            addressMintedBalance[msg.sender] += amount;
        }

        _safeMint(msg.sender, amount);
    }

    //case ethereum does something crazy
    function setPrice(uint256 newPrice) external onlyOwner 
    {
        PRICE = newPrice;
    }

    function setPresaleLimit(uint16 newLimit) external onlyOwner 
    {
        PRESALE_LIMIT = newLimit;
    }

    function setPerAddressLimit(uint16 newLimit) external onlyOwner 
    {
        perAddressLimit = newLimit;
    }

    function setNotRevealedURI(string memory _notRevealedURI) public onlyOwner {
        notRevealedUri = _notRevealedURI;
    }

    function reveal() public onlyOwner {
        revealed = true;
    }

    function flipSaleState() external onlyOwner 
    {
        saleIsActive = !saleIsActive;
    }

    function flipPreSaleState() external onlyOwner 
    {
        preSaleIsActive = !preSaleIsActive;
    }

    function flipWhitelistingState() external onlyOwner 
    {
        whitelist = !whitelist;
    }

    function mintReservedTokens(address to, uint16 amount) external onlyOwner 
    {
        require(reservedTokensMinted + amount <= NUMBER_RESERVED_TOKENS, "This amount is more than max allowed");

        reservedTokensMinted += amount;
        _safeMint(to, amount); 
    }
    
    function withdraw() external onlyOwner
    {
        (bool success, ) = owner().call{value: address(this).balance}("");
        require(success, "Transfer failed");
    }

    function setRoot(bytes32 _root) external onlyOwner
    {
        root = _root;
    }

    function verify(bytes32[] memory proof) internal view returns (bool) 
    {
        bytes32 leaf = keccak256(abi.encodePacked(msg.sender));
        return MerkleProof.verify(proof, root, leaf);
    }
    
    ////
    //URI management part
    ////
    function _baseURI() internal view virtual override returns (string memory) {
        return _baseTokenURI;
    }

    function setBaseURI(string calldata baseURI) external onlyOwner {
        _baseTokenURI = baseURI;
    }
  
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory)
    {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

        if(revealed == false) 
        {
            return notRevealedUri;
        }

        string memory _tokenURI = super.tokenURI(tokenId);
        return bytes(_tokenURI).length > 0 ? string(abi.encodePacked(_tokenURI, ".json")) : "";
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (utils/cryptography/MerkleProof.sol)

pragma solidity ^0.8.0;

/**
 * @dev These functions deal with verification of Merkle Trees proofs.
 *
 * The proofs can be generated using the JavaScript library
 * https://github.com/miguelmota/merkletreejs[merkletreejs].
 * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled.
 *
 * See `test/utils/cryptography/MerkleProof.test.js` for some examples.
 *
 * WARNING: You should avoid using leaf values that are 64 bytes long prior to
 * hashing, or use a hash function other than keccak256 for hashing leaves.
 * This is because the concatenation of a sorted pair of internal nodes in
 * the merkle tree could be reinterpreted as a leaf value.
 */
library MerkleProof {
    /**
     * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
     * defined by `root`. For this, a `proof` must be provided, containing
     * sibling hashes on the branch from the leaf to the root of the tree. Each
     * pair of leaves and each pair of pre-images are assumed to be sorted.
     */
    function verify(
        bytes32[] memory proof,
        bytes32 root,
        bytes32 leaf
    ) internal pure returns (bool) {
        return processProof(proof, leaf) == root;
    }

    /**
     * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up
     * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt
     * hash matches the root of the tree. When processing the proof, the pairs
     * of leafs & pre-images are assumed to be sorted.
     *
     * _Available since v4.4._
     */
    function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            bytes32 proofElement = proof[i];
            if (computedHash <= proofElement) {
                // Hash(current computed hash + current element of the proof)
                computedHash = _efficientHash(computedHash, proofElement);
            } else {
                // Hash(current element of the proof + current computed hash)
                computedHash = _efficientHash(proofElement, computedHash);
            }
        }
        return computedHash;
    }

    function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
        assembly {
            mstore(0x00, a)
            mstore(0x20, b)
            value := keccak256(0x00, 0x40)
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

{
  "compilationTarget": {
    "BossyBaddies.sol": "BossyBaddies"
  },
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}