Token

Contract Source Code (Solidity Multiple files format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.0;
import "./ERC20.sol";
import "./Ownable.sol";

contract WOOL is ERC20, Ownable {

  // a mapping from an address to whether or not it can mint / burn
  mapping(address => bool) controllers;
  
  constructor() ERC20("WOOL", "WOOL") { }

  /**
   * mints $WOOL to a recipient
   * @param to the recipient of the $WOOL
   * @param amount the amount of $WOOL to mint
   */
  function mint(address to, uint256 amount) external {
    require(controllers[msg.sender], "Only controllers can mint");
    _mint(to, amount);
  }

  /**
   * burns $WOOL from a holder
   * @param from the holder of the $WOOL
   * @param amount the amount of $WOOL to burn
   */
  function burn(address from, uint256 amount) external {
    require(controllers[msg.sender], "Only controllers can burn");
    _burn(from, amount);
  }

  /**
   * enables an address to mint / burn
   * @param controller the address to enable
   */
  function addController(address controller) external onlyOwner {
    controllers[controller] = true;
  }

  /**
   * disables an address from minting / burning
   * @param controller the address to disbale
   */
  function removeController(address controller) external onlyOwner {
    controllers[controller] = false;
  }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    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");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    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");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    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);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    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);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    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);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.0;

import "./IERC721Receiver.sol";
import "./Pausable.sol";
import "./Woolf.sol";
import "./WOOL.sol";

contract Barn is Ownable, IERC721Receiver, Pausable {
  
  // maximum alpha score for a Wolf
  uint8 public constant MAX_ALPHA = 8;

  // struct to store a stake's token, owner, and earning values
  struct Stake {
    uint16 tokenId;
    uint80 value;
    address owner;
  }

  event TokenStaked(address owner, uint256 tokenId, uint256 value);
  event SheepClaimed(uint256 tokenId, uint256 earned, bool unstaked);
  event WolfClaimed(uint256 tokenId, uint256 earned, bool unstaked);

  // reference to the Woolf NFT contract
  Woolf woolf;
  // reference to the $WOOL contract for minting $WOOL earnings
  WOOL wool;

  // maps tokenId to stake
  mapping(uint256 => Stake) public barn; 
  // maps alpha to all Wolf stakes with that alpha
  mapping(uint256 => Stake[]) public pack; 
  // tracks location of each Wolf in Pack
  mapping(uint256 => uint256) public packIndices; 
  // total alpha scores staked
  uint256 public totalAlphaStaked = 0; 
  // any rewards distributed when no wolves are staked
  uint256 public unaccountedRewards = 0; 
  // amount of $WOOL due for each alpha point staked
  uint256 public woolPerAlpha = 0; 

  // sheep earn 10000 $WOOL per day
  uint256 public constant DAILY_WOOL_RATE = 10000 ether;
  // sheep must have 2 days worth of $WOOL to unstake or else it's too cold
  uint256 public constant MINIMUM_TO_EXIT = 2 days;
  // wolves take a 20% tax on all $WOOL claimed
  uint256 public constant WOOL_CLAIM_TAX_PERCENTAGE = 20;
  // there will only ever be (roughly) 2.4 billion $WOOL earned through staking
  uint256 public constant MAXIMUM_GLOBAL_WOOL = 2400000000 ether;

  // amount of $WOOL earned so far
  uint256 public totalWoolEarned;
  // number of Sheep staked in the Barn
  uint256 public totalSheepStaked;
  // the last time $WOOL was claimed
  uint256 public lastClaimTimestamp;

  // emergency rescue to allow unstaking without any checks but without $WOOL
  bool public rescueEnabled = false;

  /**
   * @param _woolf reference to the Woolf NFT contract
   * @param _wool reference to the $WOOL token
   */
  constructor(address _woolf, address _wool) { 
    woolf = Woolf(_woolf);
    wool = WOOL(_wool);
  }

  /** STAKING */

  /**
   * adds Sheep and Wolves to the Barn and Pack
   * @param account the address of the staker
   * @param tokenIds the IDs of the Sheep and Wolves to stake
   */
  function addManyToBarnAndPack(address account, uint16[] calldata tokenIds) external {
    require(account == _msgSender() || _msgSender() == address(woolf), "DONT GIVE YOUR TOKENS AWAY");
    for (uint i = 0; i < tokenIds.length; i++) {
      if (_msgSender() != address(woolf)) { // dont do this step if its a mint + stake
        require(woolf.ownerOf(tokenIds[i]) == _msgSender(), "AINT YO TOKEN");
        woolf.transferFrom(_msgSender(), address(this), tokenIds[i]);
      } else if (tokenIds[i] == 0) {
        continue; // there may be gaps in the array for stolen tokens
      }

      if (isSheep(tokenIds[i])) 
        _addSheepToBarn(account, tokenIds[i]);
      else 
        _addWolfToPack(account, tokenIds[i]);
    }
  }

  /**
   * adds a single Sheep to the Barn
   * @param account the address of the staker
   * @param tokenId the ID of the Sheep to add to the Barn
   */
  function _addSheepToBarn(address account, uint256 tokenId) internal whenNotPaused _updateEarnings {
    barn[tokenId] = Stake({
      owner: account,
      tokenId: uint16(tokenId),
      value: uint80(block.timestamp)
    });
    totalSheepStaked += 1;
    emit TokenStaked(account, tokenId, block.timestamp);
  }

  /**
   * adds a single Wolf to the Pack
   * @param account the address of the staker
   * @param tokenId the ID of the Wolf to add to the Pack
   */
  function _addWolfToPack(address account, uint256 tokenId) internal {
    uint256 alpha = _alphaForWolf(tokenId);
    totalAlphaStaked += alpha; // Portion of earnings ranges from 8 to 5
    packIndices[tokenId] = pack[alpha].length; // Store the location of the wolf in the Pack
    pack[alpha].push(Stake({
      owner: account,
      tokenId: uint16(tokenId),
      value: uint80(woolPerAlpha)
    })); // Add the wolf to the Pack
    emit TokenStaked(account, tokenId, woolPerAlpha);
  }

  /** CLAIMING / UNSTAKING */

  /**
   * realize $WOOL earnings and optionally unstake tokens from the Barn / Pack
   * to unstake a Sheep it will require it has 2 days worth of $WOOL unclaimed
   * @param tokenIds the IDs of the tokens to claim earnings from
   * @param unstake whether or not to unstake ALL of the tokens listed in tokenIds
   */
  function claimManyFromBarnAndPack(uint16[] calldata tokenIds, bool unstake) external whenNotPaused _updateEarnings {
    uint256 owed = 0;
    for (uint i = 0; i < tokenIds.length; i++) {
      if (isSheep(tokenIds[i]))
        owed += _claimSheepFromBarn(tokenIds[i], unstake);
      else
        owed += _claimWolfFromPack(tokenIds[i], unstake);
    }
    if (owed == 0) return;
    wool.mint(_msgSender(), owed);
  }

  /**
   * realize $WOOL earnings for a single Sheep and optionally unstake it
   * if not unstaking, pay a 20% tax to the staked Wolves
   * if unstaking, there is a 50% chance all $WOOL is stolen
   * @param tokenId the ID of the Sheep to claim earnings from
   * @param unstake whether or not to unstake the Sheep
   * @return owed - the amount of $WOOL earned
   */
  function _claimSheepFromBarn(uint256 tokenId, bool unstake) internal returns (uint256 owed) {
    Stake memory stake = barn[tokenId];
    require(stake.owner == _msgSender(), "SWIPER, NO SWIPING");
    require(!(unstake && block.timestamp - stake.value < MINIMUM_TO_EXIT), "GONNA BE COLD WITHOUT TWO DAY'S WOOL");
    if (totalWoolEarned < MAXIMUM_GLOBAL_WOOL) {
      owed = (block.timestamp - stake.value) * DAILY_WOOL_RATE / 1 days;
    } else if (stake.value > lastClaimTimestamp) {
      owed = 0; // $WOOL production stopped already
    } else {
      owed = (lastClaimTimestamp - stake.value) * DAILY_WOOL_RATE / 1 days; // stop earning additional $WOOL if it's all been earned
    }
    if (unstake) {
      if (random(tokenId) & 1 == 1) { // 50% chance of all $WOOL stolen
        _payWolfTax(owed);
        owed = 0;
      }
      woolf.safeTransferFrom(address(this), _msgSender(), tokenId, ""); // send back Sheep
      delete barn[tokenId];
      totalSheepStaked -= 1;
    } else {
      _payWolfTax(owed * WOOL_CLAIM_TAX_PERCENTAGE / 100); // percentage tax to staked wolves
      owed = owed * (100 - WOOL_CLAIM_TAX_PERCENTAGE) / 100; // remainder goes to Sheep owner
      barn[tokenId] = Stake({
        owner: _msgSender(),
        tokenId: uint16(tokenId),
        value: uint80(block.timestamp)
      }); // reset stake
    }
    emit SheepClaimed(tokenId, owed, unstake);
  }

  /**
   * realize $WOOL earnings for a single Wolf and optionally unstake it
   * Wolves earn $WOOL proportional to their Alpha rank
   * @param tokenId the ID of the Wolf to claim earnings from
   * @param unstake whether or not to unstake the Wolf
   * @return owed - the amount of $WOOL earned
   */
  function _claimWolfFromPack(uint256 tokenId, bool unstake) internal returns (uint256 owed) {
    require(woolf.ownerOf(tokenId) == address(this), "AINT A PART OF THE PACK");
    uint256 alpha = _alphaForWolf(tokenId);
    Stake memory stake = pack[alpha][packIndices[tokenId]];
    require(stake.owner == _msgSender(), "SWIPER, NO SWIPING");
    owed = (alpha) * (woolPerAlpha - stake.value); // Calculate portion of tokens based on Alpha
    if (unstake) {
      totalAlphaStaked -= alpha; // Remove Alpha from total staked
      woolf.safeTransferFrom(address(this), _msgSender(), tokenId, ""); // Send back Wolf
      Stake memory lastStake = pack[alpha][pack[alpha].length - 1];
      pack[alpha][packIndices[tokenId]] = lastStake; // Shuffle last Wolf to current position
      packIndices[lastStake.tokenId] = packIndices[tokenId];
      pack[alpha].pop(); // Remove duplicate
      delete packIndices[tokenId]; // Delete old mapping
    } else {
      pack[alpha][packIndices[tokenId]] = Stake({
        owner: _msgSender(),
        tokenId: uint16(tokenId),
        value: uint80(woolPerAlpha)
      }); // reset stake
    }
    emit WolfClaimed(tokenId, owed, unstake);
  }

  /**
   * emergency unstake tokens
   * @param tokenIds the IDs of the tokens to claim earnings from
   */
  function rescue(uint256[] calldata tokenIds) external {
    require(rescueEnabled, "RESCUE DISABLED");
    uint256 tokenId;
    Stake memory stake;
    Stake memory lastStake;
    uint256 alpha;
    for (uint i = 0; i < tokenIds.length; i++) {
      tokenId = tokenIds[i];
      if (isSheep(tokenId)) {
        stake = barn[tokenId];
        require(stake.owner == _msgSender(), "SWIPER, NO SWIPING");
        woolf.safeTransferFrom(address(this), _msgSender(), tokenId, ""); // send back Sheep
        delete barn[tokenId];
        totalSheepStaked -= 1;
        emit SheepClaimed(tokenId, 0, true);
      } else {
        alpha = _alphaForWolf(tokenId);
        stake = pack[alpha][packIndices[tokenId]];
        require(stake.owner == _msgSender(), "SWIPER, NO SWIPING");
        totalAlphaStaked -= alpha; // Remove Alpha from total staked
        woolf.safeTransferFrom(address(this), _msgSender(), tokenId, ""); // Send back Wolf
        lastStake = pack[alpha][pack[alpha].length - 1];
        pack[alpha][packIndices[tokenId]] = lastStake; // Shuffle last Wolf to current position
        packIndices[lastStake.tokenId] = packIndices[tokenId];
        pack[alpha].pop(); // Remove duplicate
        delete packIndices[tokenId]; // Delete old mapping
        emit WolfClaimed(tokenId, 0, true);
      }
    }
  }

  /** ACCOUNTING */

  /** 
   * add $WOOL to claimable pot for the Pack
   * @param amount $WOOL to add to the pot
   */
  function _payWolfTax(uint256 amount) internal {
    if (totalAlphaStaked == 0) { // if there's no staked wolves
      unaccountedRewards += amount; // keep track of $WOOL due to wolves
      return;
    }
    // makes sure to include any unaccounted $WOOL 
    woolPerAlpha += (amount + unaccountedRewards) / totalAlphaStaked;
    unaccountedRewards = 0;
  }

  /**
   * tracks $WOOL earnings to ensure it stops once 2.4 billion is eclipsed
   */
  modifier _updateEarnings() {
    if (totalWoolEarned < MAXIMUM_GLOBAL_WOOL) {
      totalWoolEarned += 
        (block.timestamp - lastClaimTimestamp)
        * totalSheepStaked
        * DAILY_WOOL_RATE / 1 days; 
      lastClaimTimestamp = block.timestamp;
    }
    _;
  }

  /** ADMIN */

  /**
   * allows owner to enable "rescue mode"
   * simplifies accounting, prioritizes tokens out in emergency
   */
  function setRescueEnabled(bool _enabled) external onlyOwner {
    rescueEnabled = _enabled;
  }

  /**
   * enables owner to pause / unpause minting
   */
  function setPaused(bool _paused) external onlyOwner {
    if (_paused) _pause();
    else _unpause();
  }

  /** READ ONLY */

  /**
   * checks if a token is a Sheep
   * @param tokenId the ID of the token to check
   * @return sheep - whether or not a token is a Sheep
   */
  function isSheep(uint256 tokenId) public view returns (bool sheep) {
    (sheep, , , , , , , , , ) = woolf.tokenTraits(tokenId);
  }

  /**
   * gets the alpha score for a Wolf
   * @param tokenId the ID of the Wolf to get the alpha score for
   * @return the alpha score of the Wolf (5-8)
   */
  function _alphaForWolf(uint256 tokenId) internal view returns (uint8) {
    ( , , , , , , , , , uint8 alphaIndex) = woolf.tokenTraits(tokenId);
    return MAX_ALPHA - alphaIndex; // alpha index is 0-3
  }

  /**
   * chooses a random Wolf thief when a newly minted token is stolen
   * @param seed a random value to choose a Wolf from
   * @return the owner of the randomly selected Wolf thief
   */
  function randomWolfOwner(uint256 seed) external view returns (address) {
    if (totalAlphaStaked == 0) return address(0x0);
    uint256 bucket = (seed & 0xFFFFFFFF) % totalAlphaStaked; // choose a value from 0 to total alpha staked
    uint256 cumulative;
    seed >>= 32;
    // loop through each bucket of Wolves with the same alpha score
    for (uint i = MAX_ALPHA - 3; i <= MAX_ALPHA; i++) {
      cumulative += pack[i].length * i;
      // if the value is not inside of that bucket, keep going
      if (bucket >= cumulative) continue;
      // get the address of a random Wolf with that alpha score
      return pack[i][seed % pack[i].length].owner;
    }
    return address(0x0);
  }

  /**
   * generates a pseudorandom number
   * @param seed a value ensure different outcomes for different sources in the same block
   * @return a pseudorandom value
   */
  function random(uint256 seed) internal view returns (uint256) {
    return uint256(keccak256(abi.encodePacked(
      tx.origin,
      blockhash(block.number - 1),
      block.timestamp,
      seed
    )));
  }

  function onERC721Received(
        address,
        address from,
        uint256,
        bytes calldata
    ) external pure override returns (bytes4) {
      require(from == address(0x0), "Cannot send tokens to Barn directly");
      return IERC721Receiver.onERC721Received.selector;
    }

  
}

// SPDX-License-Identifier: MIT

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

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./IERC20Metadata.sol";
import "./Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }

        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `sender` to `recipient`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);

        _afterTokenTransfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./IERC721Metadata.sol";
import "./Address.sol";
import "./Context.sol";
import "./Strings.sol";
import "./ERC165.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension, but not including the Enumerable extension, which is available separately as
 * {ERC721Enumerable}.
 */
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to owner address
    mapping(uint256 => address) private _owners;

    // Mapping owner address to token count
    mapping(address => uint256) private _balances;

    // Mapping from token ID to approved address
    mapping(uint256 => address) private _tokenApprovals;

    // Mapping from owner to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    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;
    }

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    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())) : "";
    }

    /**
     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
     * by default, can be overriden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

    /**
     * @dev See {IERC721-approve}.
     */
    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);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    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);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");

        _transfer(from, to, tokenId);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    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);
    }

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * `_data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    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");
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _owners[tokenId] != address(0);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    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));
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    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"
        );
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    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);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId);

        _beforeTokenTransfer(owner, address(0), tokenId);

        // Clear approvals
        _approve(address(0), tokenId);

        _balances[owner] -= 1;
        delete _owners[tokenId];

        emit Transfer(owner, address(0), tokenId);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    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);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId);

        _balances[from] -= 1;
        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param _data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    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;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./ERC721.sol";
import "./IERC721Enumerable.sol";

/**
 * @dev This implements an optional extension of {ERC721} defined in the EIP that adds
 * enumerability of all the token ids in the contract as well as all token ids owned by each
 * account.
 */
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
    // Mapping from owner to list of owned token IDs
    mapping(address => mapping(uint256 => uint256)) private _ownedTokens;

    // Mapping from token ID to index of the owner tokens list
    mapping(uint256 => uint256) private _ownedTokensIndex;

    // Array with all token ids, used for enumeration
    uint256[] private _allTokens;

    // Mapping from token id to position in the allTokens array
    mapping(uint256 => uint256) private _allTokensIndex;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
        return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     */
    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];
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _allTokens.length;
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
        return _allTokens[index];
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    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);
        }
    }

    /**
     * @dev Private function to add a token to this extension's ownership-tracking data structures.
     * @param to address representing the new owner of the given token ID
     * @param tokenId uint256 ID of the token to be added to the tokens list of the given address
     */
    function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
        uint256 length = ERC721.balanceOf(to);
        _ownedTokens[to][length] = tokenId;
        _ownedTokensIndex[tokenId] = length;
    }

    /**
     * @dev Private function to add a token to this extension's token tracking data structures.
     * @param tokenId uint256 ID of the token to be added to the tokens list
     */
    function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
        _allTokensIndex[tokenId] = _allTokens.length;
        _allTokens.push(tokenId);
    }

    /**
     * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
     * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
     * gas optimizations e.g. when performing a transfer operation (avoiding double writes).
     * This has O(1) time complexity, but alters the order of the _ownedTokens array.
     * @param from address representing the previous owner of the given token ID
     * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
     */
    function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
        // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
        uint256 tokenIndex = _ownedTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary
        if (tokenIndex != lastTokenIndex) {
            uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];

            _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
            _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
        }

        // This also deletes the contents at the last position of the array
        delete _ownedTokensIndex[tokenId];
        delete _ownedTokens[from][lastTokenIndex];
    }

    /**
     * @dev Private function to remove a token from this extension's token tracking data structures.
     * This has O(1) time complexity, but alters the order of the _allTokens array.
     * @param tokenId uint256 ID of the token to be removed from the tokens list
     */
    function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
        // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = _allTokens.length - 1;
        uint256 tokenIndex = _allTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
        // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
        // an 'if' statement (like in _removeTokenFromOwnerEnumeration)
        uint256 lastTokenId = _allTokens[lastTokenIndex];

        _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
        _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index

        // This also deletes the contents at the last position of the array
        delete _allTokensIndex[tokenId];
        _allTokens.pop();
    }
}

// SPDX-License-Identifier: MIT LICENSE 

pragma solidity ^0.8.0;

interface IBarn {
  function addManyToBarnAndPack(address account, uint16[] calldata tokenIds) external;
  function randomWolfOwner(uint256 seed) external view returns (address);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {
    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// SPDX-License-Identifier: MIT LICENSE 

pragma solidity ^0.8.0;

interface ITraits {
  function tokenURI(uint256 tokenId) external view returns (string memory);
}

// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.0;

interface IWoolf {

  // struct to store each token's traits
  struct SheepWolf {
    bool isSheep;
    uint8 fur;
    uint8 head;
    uint8 ears;
    uint8 eyes;
    uint8 nose;
    uint8 mouth;
    uint8 neck;
    uint8 feet;
    uint8 alphaIndex;
  }


  function getPaidTokens() external view returns (uint256);
  function getTokenTraits(uint256 tokenId) external view returns (SheepWolf memory);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./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() {
        _setOwner(_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 {
        _setOwner(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");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./Context.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        require(!paused(), "Pausable: paused");
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        require(paused(), "Pausable: not paused");
        _;
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        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);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    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);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed 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);
    }
}

// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.0;
import "./Ownable.sol";
import "./Strings.sol";
import "./ITraits.sol";
import "./IWoolf.sol";

contract Traits is Ownable, ITraits {

  using Strings for uint256;

  // struct to store each trait's data for metadata and rendering
  struct Trait {
    string name;
    string png;
  }

  // mapping from trait type (index) to its name
  string[9] _traitTypes = [
    "Fur",
    "Head",
    "Ears",
    "Eyes",
    "Nose",
    "Mouth",
    "Neck",
    "Feet",
    "Alpha"
  ];
  // storage of each traits name and base64 PNG data
  mapping(uint8 => mapping(uint8 => Trait)) public traitData;
  // mapping from alphaIndex to its score
  string[4] _alphas = [
    "8",
    "7",
    "6",
    "5"
  ];

  IWoolf public woolf;

  constructor() {}

  /** ADMIN */

  function setWoolf(address _woolf) external onlyOwner {
    woolf = IWoolf(_woolf);
  }

  /**
   * administrative to upload the names and images associated with each trait
   * @param traitType the trait type to upload the traits for (see traitTypes for a mapping)
   * @param traits the names and base64 encoded PNGs for each trait
   */
  function uploadTraits(uint8 traitType, uint8[] calldata traitIds, Trait[] calldata traits) external onlyOwner {
    require(traitIds.length == traits.length, "Mismatched inputs");
    for (uint i = 0; i < traits.length; i++) {
      traitData[traitType][traitIds[i]] = Trait(
        traits[i].name,
        traits[i].png
      );
    }
  }

  /** RENDER */

  /**
   * generates an <image> element using base64 encoded PNGs
   * @param trait the trait storing the PNG data
   * @return the <image> element
   */
  function drawTrait(Trait memory trait) internal pure returns (string memory) {
    return string(abi.encodePacked(
      '<image x="4" y="4" width="32" height="32" image-rendering="pixelated" preserveAspectRatio="xMidYMid" xlink:href="data:image/png;base64,',
      trait.png,
      '"/>'
    ));
  }

  /**
   * generates an entire SVG by composing multiple <image> elements of PNGs
   * @param tokenId the ID of the token to generate an SVG for
   * @return a valid SVG of the Sheep / Wolf
   */
  function drawSVG(uint256 tokenId) public view returns (string memory) {
    IWoolf.SheepWolf memory s = woolf.getTokenTraits(tokenId);
    uint8 shift = s.isSheep ? 0 : 9;

    string memory svgString = string(abi.encodePacked(
      drawTrait(traitData[0 + shift][s.fur]),
      s.isSheep ? drawTrait(traitData[1 + shift][s.head]) : drawTrait(traitData[1 + shift][s.alphaIndex]),
      s.isSheep ? drawTrait(traitData[2 + shift][s.ears]) : '',
      drawTrait(traitData[3 + shift][s.eyes]),
      s.isSheep ? drawTrait(traitData[4 + shift][s.nose]) : '',
      drawTrait(traitData[5 + shift][s.mouth]),
      s.isSheep ? '' : drawTrait(traitData[6 + shift][s.neck]),
      s.isSheep ? drawTrait(traitData[7 + shift][s.feet]) : ''
    ));

    return string(abi.encodePacked(
      '<svg id="woolf" width="100%" height="100%" version="1.1" viewBox="0 0 40 40" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">',
      svgString,
      "</svg>"
    ));
  }

  /**
   * generates an attribute for the attributes array in the ERC721 metadata standard
   * @param traitType the trait type to reference as the metadata key
   * @param value the token's trait associated with the key
   * @return a JSON dictionary for the single attribute
   */
  function attributeForTypeAndValue(string memory traitType, string memory value) internal pure returns (string memory) {
    return string(abi.encodePacked(
      '{"trait_type":"',
      traitType,
      '","value":"',
      value,
      '"}'
    ));
  }

  /**
   * generates an array composed of all the individual traits and values
   * @param tokenId the ID of the token to compose the metadata for
   * @return a JSON array of all of the attributes for given token ID
   */
  function compileAttributes(uint256 tokenId) public view returns (string memory) {
    IWoolf.SheepWolf memory s = woolf.getTokenTraits(tokenId);
    string memory traits;
    if (s.isSheep) {
      traits = string(abi.encodePacked(
        attributeForTypeAndValue(_traitTypes[0], traitData[0][s.fur].name),',',
        attributeForTypeAndValue(_traitTypes[1], traitData[1][s.head].name),',',
        attributeForTypeAndValue(_traitTypes[2], traitData[2][s.ears].name),',',
        attributeForTypeAndValue(_traitTypes[3], traitData[3][s.eyes].name),',',
        attributeForTypeAndValue(_traitTypes[4], traitData[4][s.nose].name),',',
        attributeForTypeAndValue(_traitTypes[5], traitData[5][s.mouth].name),',',
        attributeForTypeAndValue(_traitTypes[7], traitData[7][s.feet].name),','
      ));
    } else {
      traits = string(abi.encodePacked(
        attributeForTypeAndValue(_traitTypes[0], traitData[9][s.fur].name),',',
        attributeForTypeAndValue(_traitTypes[1], traitData[10][s.alphaIndex].name),',',
        attributeForTypeAndValue(_traitTypes[3], traitData[12][s.eyes].name),',',
        attributeForTypeAndValue(_traitTypes[5], traitData[14][s.mouth].name),',',
        attributeForTypeAndValue(_traitTypes[6], traitData[15][s.neck].name),',',
        attributeForTypeAndValue("Alpha Score", _alphas[s.alphaIndex]),','
      ));
    }
    return string(abi.encodePacked(
      '[',
      traits,
      '{"trait_type":"Generation","value":',
      tokenId <= woolf.getPaidTokens() ? '"Gen 0"' : '"Gen 1"',
      '},{"trait_type":"Type","value":',
      s.isSheep ? '"Sheep"' : '"Wolf"',
      '}]'
    ));
  }

  /**
   * generates a base64 encoded metadata response without referencing off-chain content
   * @param tokenId the ID of the token to generate the metadata for
   * @return a base64 encoded JSON dictionary of the token's metadata and SVG
   */
  function tokenURI(uint256 tokenId) public view override returns (string memory) {
    IWoolf.SheepWolf memory s = woolf.getTokenTraits(tokenId);

    string memory metadata = string(abi.encodePacked(
      '{"name": "',
      s.isSheep ? 'Sheep #' : 'Wolf #',
      tokenId.toString(),
      '", "description": "Thousands of Sheep and Wolves compete on a farm in the metaverse. A tempting prize of $WOOL awaits, with deadly high stakes. All the metadata and images are generated and stored 100% on-chain. No IPFS. NO API. Just the Ethereum blockchain.", "image": "data:image/svg+xml;base64,',
      base64(bytes(drawSVG(tokenId))),
      '", "attributes":',
      compileAttributes(tokenId),
      "}"
    ));

    return string(abi.encodePacked(
      "data:application/json;base64,",
      base64(bytes(metadata))
    ));
  }

  /** BASE 64 - Written by Brech Devos */
  
  string internal constant TABLE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';

  function base64(bytes memory data) internal pure returns (string memory) {
    if (data.length == 0) return '';
    
    // load the table into memory
    string memory table = TABLE;

    // multiply by 4/3 rounded up
    uint256 encodedLen = 4 * ((data.length + 2) / 3);

    // add some extra buffer at the end required for the writing
    string memory result = new string(encodedLen + 32);

    assembly {
      // set the actual output length
      mstore(result, encodedLen)
      
      // prepare the lookup table
      let tablePtr := add(table, 1)
      
      // input ptr
      let dataPtr := data
      let endPtr := add(dataPtr, mload(data))
      
      // result ptr, jump over length
      let resultPtr := add(result, 32)
      
      // run over the input, 3 bytes at a time
      for {} lt(dataPtr, endPtr) {}
      {
          dataPtr := add(dataPtr, 3)
          
          // read 3 bytes
          let input := mload(dataPtr)
          
          // write 4 characters
          mstore(resultPtr, shl(248, mload(add(tablePtr, and(shr(18, input), 0x3F)))))
          resultPtr := add(resultPtr, 1)
          mstore(resultPtr, shl(248, mload(add(tablePtr, and(shr(12, input), 0x3F)))))
          resultPtr := add(resultPtr, 1)
          mstore(resultPtr, shl(248, mload(add(tablePtr, and(shr( 6, input), 0x3F)))))
          resultPtr := add(resultPtr, 1)
          mstore(resultPtr, shl(248, mload(add(tablePtr, and(        input,  0x3F)))))
          resultPtr := add(resultPtr, 1)
      }
      
      // padding with '='
      switch mod(mload(data), 3)
      case 1 { mstore(sub(resultPtr, 2), shl(240, 0x3d3d)) }
      case 2 { mstore(sub(resultPtr, 1), shl(248, 0x3d)) }
    }
    
    return result;
  }
}

// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.0;
import "./Ownable.sol";
import "./Pausable.sol";
import "./ERC721Enumerable.sol";
import "./IWoolf.sol";
import "./IBarn.sol";
import "./ITraits.sol";
import "./WOOL.sol";


contract Woolf is IWoolf, ERC721Enumerable, Ownable, Pausable {

  // mint price
  uint256 public constant MINT_PRICE = .069420 ether;
  // max number of tokens that can be minted - 50000 in production
  uint256 public immutable MAX_TOKENS;
  // number of tokens that can be claimed for free - 20% of MAX_TOKENS
  uint256 public PAID_TOKENS;
  // number of tokens have been minted so far
  uint16 public minted;

  // mapping from tokenId to a struct containing the token's traits
  mapping(uint256 => SheepWolf) public tokenTraits;
  // mapping from hashed(tokenTrait) to the tokenId it's associated with
  // used to ensure there are no duplicates
  mapping(uint256 => uint256) public existingCombinations;

  // list of probabilities for each trait type
  // 0 - 9 are associated with Sheep, 10 - 18 are associated with Wolves
  uint8[][18] public rarities;
  // list of aliases for Walker's Alias algorithm
  // 0 - 9 are associated with Sheep, 10 - 18 are associated with Wolves
  uint8[][18] public aliases;

  // reference to the Barn for choosing random Wolf thieves
  IBarn public barn;
  // reference to $WOOL for burning on mint
  WOOL public wool;
  // reference to Traits
  ITraits public traits;

  /** 
   * instantiates contract and rarity tables
   */
  constructor(address _wool, address _traits, uint256 _maxTokens) ERC721("Wolf Game", 'WGAME') { 
    wool = WOOL(_wool);
    traits = ITraits(_traits);
    MAX_TOKENS = _maxTokens;
    PAID_TOKENS = _maxTokens / 5;

    // I know this looks weird but it saves users gas by making lookup O(1)
    // A.J. Walker's Alias Algorithm
    // sheep
    // fur
    rarities[0] = [15, 50, 200, 250, 255];
    aliases[0] = [4, 4, 4, 4, 4];
    // head
    rarities[1] = [190, 215, 240, 100, 110, 135, 160, 185, 80, 210, 235, 240, 80, 80, 100, 100, 100, 245, 250, 255];
    aliases[1] = [1, 2, 4, 0, 5, 6, 7, 9, 0, 10, 11, 17, 0, 0, 0, 0, 4, 18, 19, 19];
    // ears
    rarities[2] =  [255, 30, 60, 60, 150, 156];
    aliases[2] = [0, 0, 0, 0, 0, 0];
    // eyes
    rarities[3] = [221, 100, 181, 140, 224, 147, 84, 228, 140, 224, 250, 160, 241, 207, 173, 84, 254, 220, 196, 140, 168, 252, 140, 183, 236, 252, 224, 255];
    aliases[3] = [1, 2, 5, 0, 1, 7, 1, 10, 5, 10, 11, 12, 13, 14, 16, 11, 17, 23, 13, 14, 17, 23, 23, 24, 27, 27, 27, 27];
    // nose
    rarities[4] = [175, 100, 40, 250, 115, 100, 185, 175, 180, 255];
    aliases[4] = [3, 0, 4, 6, 6, 7, 8, 8, 9, 9];
    // mouth
    rarities[5] = [80, 225, 227, 228, 112, 240, 64, 160, 167, 217, 171, 64, 240, 126, 80, 255];
    aliases[5] = [1, 2, 3, 8, 2, 8, 8, 9, 9, 10, 13, 10, 13, 15, 13, 15];
    // neck
    rarities[6] = [255];
    aliases[6] = [0];
    // feet
    rarities[7] = [243, 189, 133, 133, 57, 95, 152, 135, 133, 57, 222, 168, 57, 57, 38, 114, 114, 114, 255];
    aliases[7] = [1, 7, 0, 0, 0, 0, 0, 10, 0, 0, 11, 18, 0, 0, 0, 1, 7, 11, 18];
    // alphaIndex
    rarities[8] = [255];
    aliases[8] = [0];

    // wolves
    // fur
    rarities[9] = [210, 90, 9, 9, 9, 150, 9, 255, 9];
    aliases[9] = [5, 0, 0, 5, 5, 7, 5, 7, 5];
    // head
    rarities[10] = [255];
    aliases[10] = [0];
    // ears
    rarities[11] = [255];
    aliases[11] = [0];
    // eyes
    rarities[12] = [135, 177, 219, 141, 183, 225, 147, 189, 231, 135, 135, 135, 135, 246, 150, 150, 156, 165, 171, 180, 186, 195, 201, 210, 243, 252, 255];
    aliases[12] = [1, 2, 3, 4, 5, 6, 7, 8, 13, 3, 6, 14, 15, 16, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 26, 26];
    // nose
    rarities[13] = [255];
    aliases[13] = [0];
    // mouth
    rarities[14] = [239, 244, 249, 234, 234, 234, 234, 234, 234, 234, 130, 255, 247];
    aliases[14] = [1, 2, 11, 0, 11, 11, 11, 11, 11, 11, 11, 11, 11];
    // neck
    rarities[15] = [75, 180, 165, 120, 60, 150, 105, 195, 45, 225, 75, 45, 195, 120, 255];
    aliases[15] = [1, 9, 0, 0, 0, 0, 0, 0, 0, 12, 0, 0, 14, 12, 14];
    // feet 
    rarities[16] = [255];
    aliases[16] = [0];
    // alphaIndex
    rarities[17] = [8, 160, 73, 255]; 
    aliases[17] = [2, 3, 3, 3];
  }

  /** EXTERNAL */

  /** 
   * mint a token - 90% Sheep, 10% Wolves
   * The first 20% are free to claim, the remaining cost $WOOL
   */
  function mint(uint256 amount, bool stake) external payable whenNotPaused {
    require(tx.origin == _msgSender(), "Only EOA");
    require(minted + amount <= MAX_TOKENS, "All tokens minted");
    require(amount > 0 && amount <= 10, "Invalid mint amount");
    if (minted < PAID_TOKENS) {
      require(minted + amount <= PAID_TOKENS, "All tokens on-sale already sold");
      require(amount * MINT_PRICE == msg.value, "Invalid payment amount");
    } else {
      require(msg.value == 0);
    }

    uint256 totalWoolCost = 0;
    uint16[] memory tokenIds = stake ? new uint16[](amount) : new uint16[](0);
    uint256 seed;
    for (uint i = 0; i < amount; i++) {
      minted++;
      seed = random(minted);
      generate(minted, seed);
      address recipient = selectRecipient(seed);
      if (!stake || recipient != _msgSender()) {
        _safeMint(recipient, minted);
      } else {
        _safeMint(address(barn), minted);
        tokenIds[i] = minted;
      }
      totalWoolCost += mintCost(minted);
    }
    
    if (totalWoolCost > 0) wool.burn(_msgSender(), totalWoolCost);
    if (stake) barn.addManyToBarnAndPack(_msgSender(), tokenIds);
  }

  /** 
   * the first 20% are paid in ETH
   * the next 20% are 20000 $WOOL
   * the next 40% are 40000 $WOOL
   * the final 20% are 80000 $WOOL
   * @param tokenId the ID to check the cost of to mint
   * @return the cost of the given token ID
   */
  function mintCost(uint256 tokenId) public view returns (uint256) {
    if (tokenId <= PAID_TOKENS) return 0;
    if (tokenId <= MAX_TOKENS * 2 / 5) return 20000 ether;
    if (tokenId <= MAX_TOKENS * 4 / 5) return 40000 ether;
    return 80000 ether;
  }

  function transferFrom(
    address from,
    address to,
    uint256 tokenId
  ) public virtual override {
    // Hardcode the Barn's approval so that users don't have to waste gas approving
    if (_msgSender() != address(barn))
      require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
    _transfer(from, to, tokenId);
  }

  /** INTERNAL */

  /**
   * generates traits for a specific token, checking to make sure it's unique
   * @param tokenId the id of the token to generate traits for
   * @param seed a pseudorandom 256 bit number to derive traits from
   * @return t - a struct of traits for the given token ID
   */
  function generate(uint256 tokenId, uint256 seed) internal returns (SheepWolf memory t) {
    t = selectTraits(seed);
    if (existingCombinations[structToHash(t)] == 0) {
      tokenTraits[tokenId] = t;
      existingCombinations[structToHash(t)] = tokenId;
      return t;
    }
    return generate(tokenId, random(seed));
  }

  /**
   * uses A.J. Walker's Alias algorithm for O(1) rarity table lookup
   * ensuring O(1) instead of O(n) reduces mint cost by more than 50%
   * probability & alias tables are generated off-chain beforehand
   * @param seed portion of the 256 bit seed to remove trait correlation
   * @param traitType the trait type to select a trait for 
   * @return the ID of the randomly selected trait
   */
  function selectTrait(uint16 seed, uint8 traitType) internal view returns (uint8) {
    uint8 trait = uint8(seed) % uint8(rarities[traitType].length);
    if (seed >> 8 < rarities[traitType][trait]) return trait;
    return aliases[traitType][trait];
  }

  /**
   * the first 20% (ETH purchases) go to the minter
   * the remaining 80% have a 10% chance to be given to a random staked wolf
   * @param seed a random value to select a recipient from
   * @return the address of the recipient (either the minter or the Wolf thief's owner)
   */
  function selectRecipient(uint256 seed) internal view returns (address) {
    if (minted <= PAID_TOKENS || ((seed >> 245) % 10) != 0) return _msgSender(); // top 10 bits haven't been used
    address thief = barn.randomWolfOwner(seed >> 144); // 144 bits reserved for trait selection
    if (thief == address(0x0)) return _msgSender();
    return thief;
  }

  /**
   * selects the species and all of its traits based on the seed value
   * @param seed a pseudorandom 256 bit number to derive traits from
   * @return t -  a struct of randomly selected traits
   */
  function selectTraits(uint256 seed) internal view returns (SheepWolf memory t) {    
    t.isSheep = (seed & 0xFFFF) % 10 != 0;
    uint8 shift = t.isSheep ? 0 : 9;
    seed >>= 16;
    t.fur = selectTrait(uint16(seed & 0xFFFF), 0 + shift);
    seed >>= 16;
    t.head = selectTrait(uint16(seed & 0xFFFF), 1 + shift);
    seed >>= 16;
    t.ears = selectTrait(uint16(seed & 0xFFFF), 2 + shift);
    seed >>= 16;
    t.eyes = selectTrait(uint16(seed & 0xFFFF), 3 + shift);
    seed >>= 16;
    t.nose = selectTrait(uint16(seed & 0xFFFF), 4 + shift);
    seed >>= 16;
    t.mouth = selectTrait(uint16(seed & 0xFFFF), 5 + shift);
    seed >>= 16;
    t.neck = selectTrait(uint16(seed & 0xFFFF), 6 + shift);
    seed >>= 16;
    t.feet = selectTrait(uint16(seed & 0xFFFF), 7 + shift);
    seed >>= 16;
    t.alphaIndex = selectTrait(uint16(seed & 0xFFFF), 8 + shift);
  }

  /**
   * converts a struct to a 256 bit hash to check for uniqueness
   * @param s the struct to pack into a hash
   * @return the 256 bit hash of the struct
   */
  function structToHash(SheepWolf memory s) internal pure returns (uint256) {
    return uint256(bytes32(
      abi.encodePacked(
        s.isSheep,
        s.fur,
        s.head,
        s.eyes,
        s.mouth,
        s.neck,
        s.ears,
        s.feet,
        s.alphaIndex
      )
    ));
  }

  /**
   * generates a pseudorandom number
   * @param seed a value ensure different outcomes for different sources in the same block
   * @return a pseudorandom value
   */
  function random(uint256 seed) internal view returns (uint256) {
    return uint256(keccak256(abi.encodePacked(
      tx.origin,
      blockhash(block.number - 1),
      block.timestamp,
      seed
    )));
  }

  /** READ */

  function getTokenTraits(uint256 tokenId) external view override returns (SheepWolf memory) {
    return tokenTraits[tokenId];
  }

  function getPaidTokens() external view override returns (uint256) {
    return PAID_TOKENS;
  }

  /** ADMIN */

  /**
   * called after deployment so that the contract can get random wolf thieves
   * @param _barn the address of the Barn
   */
  function setBarn(address _barn) external onlyOwner {
    barn = IBarn(_barn);
  }

  /**
   * allows owner to withdraw funds from minting
   */
  function withdraw() external onlyOwner {
    payable(owner()).transfer(address(this).balance);
  }

  /**
   * updates the number of tokens for sale
   */
  function setPaidTokens(uint256 _paidTokens) external onlyOwner {
    PAID_TOKENS = _paidTokens;
  }

  /**
   * enables owner to pause / unpause minting
   */
  function setPaused(bool _paused) external onlyOwner {
    if (_paused) _pause();
    else _unpause();
  }

  /** RENDER */

  function tokenURI(uint256 tokenId) public view override returns (string memory) {
    require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
    return traits.tokenURI(tokenId);
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"controller","type":"address"}],"name":"addController","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"controller","type":"address"}],"name":"removeController","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

112:1177:21:-:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;2063:98:4;;;:::i;:::-;;;;;;;:::i;:::-;;;;;;;;4160:166;;;;;;:::i;:::-;;:::i;:::-;;;1613:14:23;;1606:22;1588:41;;1576:2;1561:18;4160:166:4;1448:187:23;3151:106:4;3238:12;;3151:106;;;7869:25:23;;;7857:2;7842:18;3151:106:4;7723:177:23;4793:478:4;;;;;;:::i;:::-;;:::i;3000:91::-;;;3082:2;8047:36:23;;8035:2;8020:18;3000:91:4;7905:184:23;5666:212:4;;;;;;:::i;:::-;;:::i;436:146:21:-;;;;;;:::i;:::-;;:::i;:::-;;3315:125:4;;;;;;:::i;:::-;-1:-1:-1;;;;;3415:18:4;3389:7;3415:18;;;;;;;;;;;;3315:125;1598:92:17;;;:::i;966:85::-;1038:6;;966:85;;-1:-1:-1;;;;;1038:6:17;;;1386:51:23;;1374:2;1359:18;966:85:17;1240:203:23;2274:102:4;;;:::i;717:150:21:-;;;;;;:::i;:::-;;:::i;6365:405:4:-;;;;;;:::i;:::-;;:::i;967:103:21:-;;;;;;:::i;:::-;;:::i;3643:172:4:-;;;;;;:::i;:::-;;:::i;3873:149::-;;;;;;:::i;:::-;-1:-1:-1;;;;;3988:18:4;;;3962:7;3988:18;;;:11;:18;;;;;;;;:27;;;;;;;;;;;;;3873:149;1839:189:17;;;;;;:::i;:::-;;:::i;1180:107:21:-;;;;;;:::i;:::-;;:::i;2063:98:4:-;2117:13;2149:5;2142:12;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;2063:98;:::o;4160:166::-;4243:4;4259:39;666:10:2;4282:7:4;4291:6;4259:8;:39::i;:::-;-1:-1:-1;4315:4:4;4160:166;;;;:::o;4793:478::-;4929:4;4945:36;4955:6;4963:9;4974:6;4945:9;:36::i;:::-;-1:-1:-1;;;;;5019:19:4;;4992:24;5019:19;;;:11;:19;;;;;;;;666:10:2;5019:33:4;;;;;;;;5070:26;;;;5062:79;;;;-1:-1:-1;;;5062:79:4;;5176:2:23;5062:79:4;;;5158:21:23;5215:2;5195:18;;;5188:30;5254:34;5234:18;;;5227:62;-1:-1:-1;;;5305:18:23;;;5298:38;5353:19;;5062:79:4;;;;;;;;;5175:57;5184:6;666:10:2;5225:6:4;5206:16;:25;5175:8;:57::i;:::-;-1:-1:-1;5260:4:4;;4793:478;-1:-1:-1;;;;4793:478:4:o;5666:212::-;666:10:2;5754:4:4;5802:25;;;:11;:25;;;;;;;;-1:-1:-1;;;;;5802:34:4;;;;;;;;;;5754:4;;5770:80;;5793:7;;5802:47;;5839:10;;5802:47;:::i;:::-;5770:8;:80::i;436:146:21:-;513:10;501:23;;;;:11;:23;;;;;;;;493:61;;;;-1:-1:-1;;;493:61:21;;4468:2:23;493:61:21;;;4450:21:23;4507:2;4487:18;;;4480:30;4546:27;4526:18;;;4519:55;4591:18;;493:61:21;4266:349:23;493:61:21;560:17;566:2;570:6;560:5;:17::i;:::-;436:146;;:::o;1598:92:17:-;1038:6;;-1:-1:-1;;;;;1038:6:17;666:10:2;1178:23:17;1170:68;;;;-1:-1:-1;;;1170:68:17;;;;;;;:::i;:::-;1662:21:::1;1680:1;1662:9;:21::i;:::-;1598:92::o:0;2274:102:4:-;2330:13;2362:7;2355:14;;;;;:::i;717:150:21:-;796:10;784:23;;;;:11;:23;;;;;;;;776:61;;;;-1:-1:-1;;;776:61:21;;4822:2:23;776:61:21;;;4804:21:23;4861:2;4841:18;;;4834:30;4900:27;4880:18;;;4873:55;4945:18;;776:61:21;4620:349:23;776:61:21;843:19;849:4;855:6;843:5;:19::i;6365:405:4:-;666:10:2;6458:4:4;6501:25;;;:11;:25;;;;;;;;-1:-1:-1;;;;;6501:34:4;;;;;;;;;;6553:35;;;;6545:85;;;;-1:-1:-1;;;6545:85:4;;7159:2:23;6545:85:4;;;7141:21:23;7198:2;7178:18;;;7171:30;7237:34;7217:18;;;7210:62;-1:-1:-1;;;7288:18:23;;;7281:35;7333:19;;6545:85:4;6957:401:23;6545:85:4;6664:67;666:10:2;6687:7:4;6715:15;6696:16;:34;6664:8;:67::i;:::-;-1:-1:-1;6759:4:4;;6365:405;-1:-1:-1;;;6365:405:4:o;967:103:21:-;1038:6:17;;-1:-1:-1;;;;;1038:6:17;666:10:2;1178:23:17;1170:68;;;;-1:-1:-1;;;1170:68:17;;;;;;;:::i;:::-;-1:-1:-1;;;;;1035:23:21::1;;::::0;;;:11:::1;:23;::::0;;;;:30;;-1:-1:-1;;1035:30:21::1;1061:4;1035:30;::::0;;967:103::o;3643:172:4:-;3729:4;3745:42;666:10:2;3769:9:4;3780:6;3745:9;:42::i;1839:189:17:-;1038:6;;-1:-1:-1;;;;;1038:6:17;666:10:2;1178:23:17;1170:68;;;;-1:-1:-1;;;1170:68:17;;;;;;;:::i;:::-;-1:-1:-1;;;;;1927:22:17;::::1;1919:73;;;::::0;-1:-1:-1;;;1919:73:17;;3251:2:23;1919:73:17::1;::::0;::::1;3233:21:23::0;3290:2;3270:18;;;3263:30;3329:34;3309:18;;;3302:62;-1:-1:-1;;;3380:18:23;;;3373:36;3426:19;;1919:73:17::1;3049:402:23::0;1919:73:17::1;2002:19;2012:8;2002:9;:19::i;:::-;1839:189:::0;:::o;1180:107:21:-;1038:6:17;;-1:-1:-1;;;;;1038:6:17;666:10:2;1178:23:17;1170:68;;;;-1:-1:-1;;;1170:68:17;;;;;;;:::i;:::-;-1:-1:-1;;;;;1251:23:21::1;1277:5;1251:23:::0;;;:11:::1;:23;::::0;;;;:31;;-1:-1:-1;;1251:31:21::1;::::0;;1180:107::o;9941:370:4:-;-1:-1:-1;;;;;10072:19:4;;10064:68;;;;-1:-1:-1;;;10064:68:4;;6754:2:23;10064:68:4;;;6736:21:23;6793:2;6773:18;;;6766:30;6832:34;6812:18;;;6805:62;-1:-1:-1;;;6883:18:23;;;6876:34;6927:19;;10064:68:4;6552:400:23;10064:68:4;-1:-1:-1;;;;;10150:21:4;;10142:68;;;;-1:-1:-1;;;10142:68:4;;3658:2:23;10142:68:4;;;3640:21:23;3697:2;3677:18;;;3670:30;3736:34;3716:18;;;3709:62;-1:-1:-1;;;3787:18:23;;;3780:32;3829:19;;10142:68:4;3456:398:23;10142:68:4;-1:-1:-1;;;;;10221:18:4;;;;;;;:11;:18;;;;;;;;:27;;;;;;;;;;;;;:36;;;10272:32;;7869:25:23;;;10272:32:4;;7842:18:23;10272:32:4;;;;;;;;9941:370;;;:::o;7244:713::-;-1:-1:-1;;;;;7379:20:4;;7371:70;;;;-1:-1:-1;;;7371:70:4;;6348:2:23;7371:70:4;;;6330:21:23;6387:2;6367:18;;;6360:30;6426:34;6406:18;;;6399:62;-1:-1:-1;;;6477:18:23;;;6470:35;6522:19;;7371:70:4;6146:401:23;7371:70:4;-1:-1:-1;;;;;7459:23:4;;7451:71;;;;-1:-1:-1;;;7451:71:4;;2444:2:23;7451:71:4;;;2426:21:23;2483:2;2463:18;;;2456:30;2522:34;2502:18;;;2495:62;-1:-1:-1;;;2573:18:23;;;2566:33;2616:19;;7451:71:4;2242:399:23;7451:71:4;-1:-1:-1;;;;;7615:17:4;;7591:21;7615:17;;;;;;;;;;;7650:23;;;;7642:74;;;;-1:-1:-1;;;7642:74:4;;4061:2:23;7642:74:4;;;4043:21:23;4100:2;4080:18;;;4073:30;4139:34;4119:18;;;4112:62;-1:-1:-1;;;4190:18:23;;;4183:36;4236:19;;7642:74:4;3859:402:23;7642:74:4;-1:-1:-1;;;;;7750:17:4;;;:9;:17;;;;;;;;;;;7770:22;;;7750:42;;7812:20;;;;;;;;:30;;7786:6;;7750:9;7812:30;;7786:6;;7812:30;:::i;:::-;;;;;;;;7875:9;-1:-1:-1;;;;;7858:35:4;7867:6;-1:-1:-1;;;;;7858:35:4;;7886:6;7858:35;;;;7869:25:23;;7857:2;7842:18;;7723:177;7858:35:4;;;;;;;;7361:596;7244:713;;;:::o;8233:389::-;-1:-1:-1;;;;;8316:21:4;;8308:65;;;;-1:-1:-1;;;8308:65:4;;7565:2:23;8308:65:4;;;7547:21:23;7604:2;7584:18;;;7577:30;7643:33;7623:18;;;7616:61;7694:18;;8308:65:4;7363:355:23;8308:65:4;8460:6;8444:12;;:22;;;;;;;:::i;:::-;;;;-1:-1:-1;;;;;;;8476:18:4;;:9;:18;;;;;;;;;;:28;;8498:6;;8476:9;:28;;8498:6;;8476:28;:::i;:::-;;;;-1:-1:-1;;8519:37:4;;7869:25:23;;;-1:-1:-1;;;;;8519:37:4;;;8536:1;;8519:37;;7857:2:23;7842:18;8519:37:4;;;;;;;436:146:21;;:::o;2034:169:17:-;2108:6;;;-1:-1:-1;;;;;2124:17:17;;;-1:-1:-1;;;;;;2124:17:17;;;;;;;2156:40;;2108:6;;;2124:17;2108:6;;2156:40;;2089:16;;2156:40;2079:124;2034:169;:::o;8942:576:4:-;-1:-1:-1;;;;;9025:21:4;;9017:67;;;;-1:-1:-1;;;9017:67:4;;5946:2:23;9017:67:4;;;5928:21:23;5985:2;5965:18;;;5958:30;6024:34;6004:18;;;5997:62;-1:-1:-1;;;6075:18:23;;;6068:31;6116:19;;9017:67:4;5744:397:23;9017:67:4;-1:-1:-1;;;;;9180:18:4;;9155:22;9180:18;;;;;;;;;;;9216:24;;;;9208:71;;;;-1:-1:-1;;;9208:71:4;;2848:2:23;9208:71:4;;;2830:21:23;2887:2;2867:18;;;2860:30;2926:34;2906:18;;;2899:62;-1:-1:-1;;;2977:18:23;;;2970:32;3019:19;;9208:71:4;2646:398:23;9208:71:4;-1:-1:-1;;;;;9313:18:4;;:9;:18;;;;;;;;;;9334:23;;;9313:44;;9377:12;:22;;9351:6;;9313:9;9377:22;;9351:6;;9377:22;:::i;:::-;;;;-1:-1:-1;;9415:37:4;;7869:25:23;;;9441:1:4;;-1:-1:-1;;;;;9415:37:4;;;;;7857:2:23;7842:18;9415:37:4;7723:177:23;14:173;82:20;;-1:-1:-1;;;;;131:31:23;;121:42;;111:70;;177:1;174;167:12;111:70;14:173;;;:::o;192:186::-;251:6;304:2;292:9;283:7;279:23;275:32;272:52;;;320:1;317;310:12;272:52;343:29;362:9;343:29;:::i;:::-;333:39;192:186;-1:-1:-1;;;192:186:23:o;383:260::-;451:6;459;512:2;500:9;491:7;487:23;483:32;480:52;;;528:1;525;518:12;480:52;551:29;570:9;551:29;:::i;:::-;541:39;;599:38;633:2;622:9;618:18;599:38;:::i;:::-;589:48;;383:260;;;;;:::o;648:328::-;725:6;733;741;794:2;782:9;773:7;769:23;765:32;762:52;;;810:1;807;800:12;762:52;833:29;852:9;833:29;:::i;:::-;823:39;;881:38;915:2;904:9;900:18;881:38;:::i;:::-;871:48;;966:2;955:9;951:18;938:32;928:42;;648:328;;;;;:::o;981:254::-;1049:6;1057;1110:2;1098:9;1089:7;1085:23;1081:32;1078:52;;;1126:1;1123;1116:12;1078:52;1149:29;1168:9;1149:29;:::i;:::-;1139:39;1225:2;1210:18;;;;1197:32;;-1:-1:-1;;;981:254:23:o;1640:597::-;1752:4;1781:2;1810;1799:9;1792:21;1842:6;1836:13;1885:6;1880:2;1869:9;1865:18;1858:34;1910:1;1920:140;1934:6;1931:1;1928:13;1920:140;;;2029:14;;;2025:23;;2019:30;1995:17;;;2014:2;1991:26;1984:66;1949:10;;1920:140;;;2078:6;2075:1;2072:13;2069:91;;;2148:1;2143:2;2134:6;2123:9;2119:22;2115:31;2108:42;2069:91;-1:-1:-1;2221:2:23;2200:15;-1:-1:-1;;2196:29:23;2181:45;;;;2228:2;2177:54;;1640:597;-1:-1:-1;;;1640:597:23:o;5383:356::-;5585:2;5567:21;;;5604:18;;;5597:30;5663:34;5658:2;5643:18;;5636:62;5730:2;5715:18;;5383:356::o;8094:128::-;8134:3;8165:1;8161:6;8158:1;8155:13;8152:39;;;8171:18;;:::i;:::-;-1:-1:-1;8207:9:23;;8094:128::o;8227:125::-;8267:4;8295:1;8292;8289:8;8286:34;;;8300:18;;:::i;:::-;-1:-1:-1;8337:9:23;;8227:125::o;8357:380::-;8436:1;8432:12;;;;8479;;;8500:61;;8554:4;8546:6;8542:17;8532:27;;8500:61;8607:2;8599:6;8596:14;8576:18;8573:38;8570:161;;;8653:10;8648:3;8644:20;8641:1;8634:31;8688:4;8685:1;8678:15;8716:4;8713:1;8706:15;8570:161;;8357:380;;;:::o;8742:127::-;8803:10;8798:3;8794:20;8791:1;8784:31;8834:4;8831:1;8824:15;8858:4;8855:1;8848:15

ipfs://10e740239ccd08bc9391399fdcda3262148860fd9e4f003e38f4318f7cb1028b