// ----------------------------------------------------------------------------
// --- Name        : Bloodpack - ["Bloodpack"]
// --- Type        : NFT ERC721 
// --- Symbol      : Format - {"BPKS"}
// --- Total supply: 666
// --- @dev pragma solidity version:0.8.9+commit.e5eed63a
// --- SPDX-License-Identifier: MIT
// --- blockhaus.company --- EJS32
// ----------------------------------------------------------------------------

pragma solidity ^0.8.9;

// ----------------------------------------------------------------------------
// --- Interface IERC165
// ----------------------------------------------------------------------------

interface IERC165 {
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// ----------------------------------------------------------------------------
// --- Interface IERC721
// ----------------------------------------------------------------------------

interface IERC721 is IERC165 {
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    function balanceOf(address owner) external view returns (uint256 balance);

    function ownerOf(uint256 tokenId) external view returns (address owner);

    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    function approve(address to, uint256 tokenId) external;
    
    function getApproved(uint256 tokenId) external view returns (address operator);
    
    function setApprovalForAll(address operator, bool _approved) external;
    
    function isApprovedForAll(address owner, address operator) external view returns (bool);
    
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;
}

// ----------------------------------------------------------------------------
// --- Interface IERC721Enumerable
// ----------------------------------------------------------------------------

interface IERC721Enumerable is IERC721 {
    function totalSupply() external view returns (uint256);
    
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
    
    function tokenByIndex(uint256 index) external view returns (uint256);
}

// ----------------------------------------------------------------------------
// --- Interface IERC721Metadata
// ----------------------------------------------------------------------------

interface IERC721Metadata is IERC721 {
    function name() external view returns (string memory);
    
    function symbol() external view returns (string memory);
    
    function tokenURI(uint256 tokenId) external view returns (string memory);
}

// ----------------------------------------------------------------------------
// --- Interface IERC721Receiver
// ----------------------------------------------------------------------------

interface IERC721Receiver {
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// ----------------------------------------------------------------------------
// --- Libarary Address
// ----------------------------------------------------------------------------

library Address {

    function isContract(address account) internal view returns (bool) {
        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {

            if (returndata.length > 0) {
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// ----------------------------------------------------------------------------
// --- Libarary Strings
// ----------------------------------------------------------------------------

library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    function toString(uint256 value) internal pure returns (string memory) {

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

// ----------------------------------------------------------------------------
// --- Contract ERC165 
// ----------------------------------------------------------------------------

abstract contract ERC165 is IERC165 {

    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// ----------------------------------------------------------------------------
// --- Contract Context 
// ----------------------------------------------------------------------------

abstract contract Context {

    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// ----------------------------------------------------------------------------
// --- Contract ERC721 
// ----------------------------------------------------------------------------

contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;
    string private _name;
    string private _symbol;
    mapping(uint256 => address) private _owners;
    mapping(address => uint256) private _balances;
    mapping(uint256 => address) private _tokenApprovals;
    mapping(address => mapping(address => bool)) private _operatorApprovals;
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");
        return _balances[owner];
    }

    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _owners[tokenId];
        require(owner != address(0), "ERC721: owner query for nonexistent token");
        return owner;
    }

    function name() public view virtual override returns (string memory) {
        return _name;
    }

    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

        string memory baseURI = _baseURI();
        return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
    }

    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ERC721.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not owner nor approved for all"
        );

        _approve(to, tokenId);
    }

    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        return _tokenApprovals[tokenId];
    }

    function setApprovalForAll(address operator, bool approved) public virtual override {
        require(operator != _msgSender(), "ERC721: approve to caller");

        _operatorApprovals[_msgSender()][operator] = approved;
        emit ApprovalForAll(_msgSender(), operator, approved);
    }

    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
        _transfer(from, to, tokenId);
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public virtual override {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
        _safeTransfer(from, to, tokenId, _data);
    }

    function _safeTransfer(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _owners[tokenId] != address(0);
    }

    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
    }

    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    function _safeMint(
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _mint(to, tokenId);
        require(
            _checkOnERC721Received(address(0), to, tokenId, _data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }

    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");
        _beforeTokenTransfer(address(0), to, tokenId);
        _balances[to] += 1;
        _owners[tokenId] = to;
        emit Transfer(address(0), to, tokenId);
    }

    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId);
        _beforeTokenTransfer(owner, address(0), tokenId);
        _approve(address(0), tokenId);
        _balances[owner] -= 1;
        delete _owners[tokenId];
        emit Transfer(owner, address(0), tokenId);
    }

    function _transfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
        require(to != address(0), "ERC721: transfer to the zero address");
        _beforeTokenTransfer(from, to, tokenId);
        _approve(address(0), tokenId);
        _balances[from] -= 1;
        _balances[to] += 1;
        _owners[tokenId] = to;
        emit Transfer(from, to, tokenId);
    }

    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
    }

    function _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        if (to.isContract()) {
            try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
                return retval == IERC721Receiver.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}
}

// ----------------------------------------------------------------------------
// --- Contract ERC721Enumerable 
// ----------------------------------------------------------------------------

abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {

    mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
    
    mapping(uint256 => uint256) private _ownedTokensIndex;
    
    uint256[] private _allTokens;
    
    mapping(uint256 => uint256) private _allTokensIndex;

    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
        return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
        return _ownedTokens[owner][index];
    }

    function totalSupply() public view virtual override returns (uint256) {
        return _allTokens.length;
    }

    function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
        return _allTokens[index];
    }

    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual override {
        super._beforeTokenTransfer(from, to, tokenId);
        if (from == address(0)) {
            _addTokenToAllTokensEnumeration(tokenId);
        } else if (from != to) {
            _removeTokenFromOwnerEnumeration(from, tokenId);
        }
        if (to == address(0)) {
            _removeTokenFromAllTokensEnumeration(tokenId);
        } else if (to != from) {
            _addTokenToOwnerEnumeration(to, tokenId);
        }
    }

    function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
        uint256 length = ERC721.balanceOf(to);
        _ownedTokens[to][length] = tokenId;
        _ownedTokensIndex[tokenId] = length;
    }

    function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
        _allTokensIndex[tokenId] = _allTokens.length;
        _allTokens.push(tokenId);
    }

    function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
        uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
        uint256 tokenIndex = _ownedTokensIndex[tokenId];

        if (tokenIndex != lastTokenIndex) {
            uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
            _ownedTokens[from][tokenIndex] = lastTokenId;
            _ownedTokensIndex[lastTokenId] = tokenIndex;
        }

        delete _ownedTokensIndex[tokenId];
        delete _ownedTokens[from][lastTokenIndex];
    }

    function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
        uint256 lastTokenIndex = _allTokens.length - 1;
        uint256 tokenIndex = _allTokensIndex[tokenId];
        uint256 lastTokenId = _allTokens[lastTokenIndex];
        _allTokens[tokenIndex] = lastTokenId;
        _allTokensIndex[lastTokenId] = tokenIndex; 
        delete _allTokensIndex[tokenId];
        _allTokens.pop();
    }
}

// ----------------------------------------------------------------------------
// --- Contract Ownable 
// ----------------------------------------------------------------------------

abstract contract Ownable is Context {

    address private _owner;
    
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    
    constructor() {
        _transferOwnership(_msgSender());
    }

    function owner() public view virtual returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// ----------------------------------------------------------------------------
// --- Contract Bloodpack
// ----------------------------------------------------------------------------

contract Bloodpack is ERC721Enumerable, Ownable {
    uint256 private basePrice = 666000000000;
    uint256 private reserveAtATime = 666;
    uint256 private reservedCount = 0;
    uint256 private maxReserveCount = 666;

    string _baseTokenURI;

    bool public isActive = false;
    bool public isAllowListActive = false;

    uint256 public constant MAX_MINTSUPPLY = 666;
    uint256 public maximumAllowedTokensPerPurchase = 666;
    uint256 public allowListMaxMint = 666;

    mapping(address => bool) private _allowList;
    mapping(address => uint256) private _allowListClaimed;

    event AssetMinted(uint256 tokenId, address sender);
    event SaleActivation(bool isActive);

    constructor(string memory baseURI) ERC721("Bloodpack", "BPKS") {
        setBaseURI(baseURI);
    }

    modifier saleIsOpen {
        require(totalSupply() <= MAX_MINTSUPPLY, "Sale has ended.");
        _;
    }

    modifier onlyAuthorized() {
        require(owner() == msg.sender);
        _;
    }

    function setMaximumAllowedTokens(uint256 _count) public onlyAuthorized {
        maximumAllowedTokensPerPurchase = _count;
    }

    function setActive(bool val) public onlyAuthorized {
        isActive = val;
        emit SaleActivation(val);
    }

    function setIsAllowListActive(bool _isAllowListActive) external onlyAuthorized {
        isAllowListActive = _isAllowListActive;
    }

    function setAllowListMaxMint(uint256 maxMint) external  onlyAuthorized {
        allowListMaxMint = maxMint;
    }

    function addToAllowList(address[] calldata addresses) external onlyAuthorized {
      for (uint256 i = 0; i < addresses.length; i++) {
        require(addresses[i] != address(0), "Can't add a null address");

        _allowList[addresses[i]] = true;
        _allowListClaimed[addresses[i]] > 0 ? _allowListClaimed[addresses[i]] : 0;
      }
    }

    function checkIfOnAllowList(address addr) external view returns (bool) {
      return _allowList[addr];
    }

    function removeFromAllowList(address[] calldata addresses) external onlyAuthorized {
      for (uint256 i = 0; i < addresses.length; i++) {
        require(addresses[i] != address(0), "Can't add a null address");

        _allowList[addresses[i]] = false;
      }
    }

    function allowListClaimedBy(address owner) external view returns (uint256){
      require(owner != address(0), 'Zero address not on Allow List');

      return _allowListClaimed[owner];
    }

    function setReserveAtATime(uint256 val) public onlyAuthorized {
        reserveAtATime = val;
    }

    function setMaxReserve(uint256 val) public onlyAuthorized {
        maxReserveCount = val;
    }

    function setPrice(uint256 _price) public onlyAuthorized {
        basePrice = _price;
    }

    function setBaseURI(string memory baseURI) public onlyAuthorized {
        _baseTokenURI = baseURI;
    }

    function getMaximumAllowedTokens() public view onlyAuthorized returns (uint256) {
        return maximumAllowedTokensPerPurchase;
    }

    function getPrice() external view returns (uint256) {
        return basePrice;
    }

    function getReserveAtATime() external view returns (uint256) {
        return reserveAtATime;
    }

    function getTotalSupply() external view returns (uint256) {
        return totalSupply();
    }

    function getContractOwner() public view returns (address) {
        return owner();
    }

    function _baseURI() internal view virtual override returns (string memory) {
        return _baseTokenURI;
    }

    function reserveNft() public onlyAuthorized {
        require(reservedCount <= maxReserveCount, "Max Reserves taken already!");
        uint256 supply = totalSupply();
        uint256 i;
        for (i = 0; i < reserveAtATime; i++) {
            emit AssetMinted(supply + i, msg.sender);
            _safeMint(msg.sender, supply + i);
            reservedCount++;
        }
    }

    function mint(address _to, uint256 _count) public payable saleIsOpen {
        if (msg.sender != owner()) {
            require(isActive, "Sale is not active currently.");
        }

        require(totalSupply() + _count <= MAX_MINTSUPPLY, "Total supply exceeded.");
        require(totalSupply() <= MAX_MINTSUPPLY, "Total supply spent.");
        require(
            _count <= maximumAllowedTokensPerPurchase,
            "Exceeds maximum allowed tokens"
        );
        require(msg.value >= basePrice * _count, "Insuffient ETH amount sent.");

        for (uint256 i = 0; i < _count; i++) {
            emit AssetMinted(totalSupply(), _to);
            _safeMint(_to, totalSupply());
        }
    }

  function preSaleMint(uint256 _count) public payable saleIsOpen {
    require(isAllowListActive, 'Allow List is not active');
    require(_allowList[msg.sender], 'You are not on the Allow List');
    require(totalSupply() < MAX_MINTSUPPLY, 'All tokens have been minted');
    require(_count <= allowListMaxMint, 'Cannot purchase this many tokens');
    require(_allowListClaimed[msg.sender] + _count <= allowListMaxMint, 'Purchase exceeds max allowed');
    require(msg.value >= basePrice * _count, 'Insuffient ETH amount sent.');

    for (uint256 i = 0; i < _count; i++) {
      _allowListClaimed[msg.sender] += 1;
      emit AssetMinted(totalSupply(), msg.sender);
      _safeMint(msg.sender, totalSupply());
    }
  }

  function walletOfOwner(address _owner) external view returns(uint256[] memory) {
    uint tokenCount = balanceOf(_owner);
    uint256[] memory tokensId = new uint256[](tokenCount);
    for(uint i = 0; i < tokenCount; i++){
        tokensId[i] = tokenOfOwnerByIndex(_owner, i);
    }
    return tokensId;
  }

  function withdraw() external onlyAuthorized {
    payable(owner()).transfer(address(this).balance);
  }
}