Contract

Contract Source Code (Solidity)

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Outline

• interface ICallFacet
•    - function call(
•    - function callNoValue(
•    - function singleCall(
•    - function addCaller(address _caller)
•    - function removeCaller(address _caller ...
•    - function canCall(address _caller)
•    - function getCallers()
• interface IERC20Facet
•    - function name()
•    - function symbol()
•    - function decimals()
•    - function mint(address _receiver, uint ...
•    - function burn(address _from, uint256 ...
•    - function initialize(
•    - function setName(string calldata _nam ...
•    - function setSymbol(string calldata _s ...
•    - function increaseApproval(address _sp ...
•    - function decreaseApproval(address _sp ...
• interface IBasketFacet
•    - function setEntryFee(uint256 _fee)
•    - function getEntryFee()
•    - function setExitFee(uint256 _fee)
•    - function getExitFee()
•    - function setAnnualizedFee(uint256 _fe ...
•    - function getAnnualizedFee()
•    - function setFeeBeneficiary(address _b ...
•    - function getFeeBeneficiary()
•    - function setEntryFeeBeneficiaryShare( ...
•    - function getEntryFeeBeneficiaryShare( ...
•    - function setExitFeeBeneficiaryShare(u ...
•    - function getExitFeeBeneficiaryShare()
•    - function calcOutStandingAnnualizedFee ...
•    - function chargeOutstandingAnnualizedF ...
•    - function joinPool(uint256 _amount)
•    - function exitPool(uint256 _amount)
•    - function getLock()
•    - function getLockBlock()
•    - function setLock(uint256 _lock)
•    - function getCap()
•    - function setCap(uint256 _maxCap)
•    - function balance(address _token)
•    - function getTokens()
•    - function addToken(address _token)
•    - function removeToken(address _token)
•    - function getTokenInPool(address _toke ...
•    - function calcTokensForAmount(uint256 ...
•    - function calcTokensForAmountExit(uint ...
•  contract PProxyStorage *
•    - function readBool(bytes32 _key)
•    - function setBool(bytes32 _key, bool _ ...
•    - function readAddress(bytes32 _key)
•    - function setAddress(bytes32 _key, add ...
•    - function storageRead(bytes32 _key)
•    - function storageSet(bytes32 _key, byt ...
•    - function bytes32ToAddress(bytes32 _va ...
•    - function addressToBytes32(address _va ...
•  contract PProxy is PProxyStorage *
•    - function getProxyOwner()
•    - function setProxyOwner(address _newOw ...
•    - function getImplementation()
•    - function setImplementation(address _n ...
•    - function internalFallback()
• library Address
•    - function isContract(address account)
•    - function sendValue(address payable re ...
•    - function functionCall(address target, ...
•    - function functionCall(address target, ...
•    - function functionCallWithValue(addres ...
•    - function functionCallWithValue(addres ...
•    - function _functionCallWithValue(addre ...
• library SafeMath
•    - function add(uint256 a, uint256 b)
•    - function sub(uint256 a, uint256 b)
•    - function sub(uint256 a, uint256 b, st ...
•    - function mul(uint256 a, uint256 b)
•    - function div(uint256 a, uint256 b)
•    - function div(uint256 a, uint256 b, st ...
•    - function mod(uint256 a, uint256 b)
•    - function mod(uint256 a, uint256 b, st ...
• interface IERC20
•    - function totalSupply()
•    - function balanceOf(address account)
•    - function transfer(address recipient, ...
•    - function allowance(address owner, add ...
•    - function approve(address spender, uin ...
•    - function transferFrom(address sender, ...
• library SafeERC20
•    - function safeTransfer(IERC20 token, a ...
•    - function safeTransferFrom(IERC20 toke ...
•    - function safeApprove(IERC20 token, ad ...
•    - function safeIncreaseAllowance(IERC20 ...
•    - function safeDecreaseAllowance(IERC20 ...
•    - function _callOptionalReturn(IERC20 t ...
•    - function _msgSender()
•    - function _msgData()
•  contract Ownable is Context
•    - function owner()
•    - function renounceOwnership()
•    - function transferOwnership(address ne ...
• interface IERC165
•    - function supportsInterface(bytes4 int ...
• interface IERC173
•    - function owner()
•    - function transferOwnership(address _n ...
• interface IExperiPie is IERC20, IBask ...
• interface IDiamondLoupe
•    - function facets()
•    - function facetFunctionSelectors(addre ...
•    - function facetAddresses()
•    - function facetAddress(bytes4 _functio ...
• interface IDiamondCut
•    - function diamondCut(
• library LibDiamondInitialize
•    - function diamondInitializeStorage()
• library LibDiamond
•    - function diamondStorage()
•    - function setContractOwner(address _ne ...
•    - function contractOwner()
•    - function enforceIsContractOwner()
•    - function diamondCut(
•    - function addReplaceRemoveFacetSelecto ...
•    - function initializeDiamondCut(address ...
•    - function enforceHasContractCode(addre ...
•  contract Diamond
•    - function initialize(IDiamondCut.Facet ...
•  contract BasketFactoryContract is ...
•    - function setDefaultController(address ...
•    - function removeFacet(uint256 _index)
•    - function addFacet(IDiamondCut.FacetCu ...
•    - function setDiamondImplementation(add ...
•    - function bakeBasket(
•    - function getDefaultCut()
•    - function getDefaultCutCount()

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/**
 *Submitted for verification at Etherscan.io on 2023-03-07
*/

/**
 *Submitted for verification at Etherscan.io on 2022-03-13
*/

// File: Interfaces/ICallFacet.sol


pragma solidity ^0.7.1;

interface ICallFacet {

    event CallerAdded(address indexed caller);
    event CallerRemoved(address indexed caller);
    event Call(address indexed caller, address indexed target, bytes data, uint256 value);

    /**
        @notice Lets whitelisted callers execute a batch of arbitrary calls from the pool. Reverts if one of the calls fails
        @param _targets Array of addresses of targets to call
        @param _calldata Array of calldata for each call
        @param _values Array of amounts of ETH to send with the call
    */
    function call(
        address[] memory _targets,
        bytes[] memory _calldata,
        uint256[] memory _values
    ) external;

    /**
        @notice Lets whitelisted callers execute a batch of arbitrary calls from the pool without sending any Ether. Reverts if one of the calls fail
        @param _targets Array of addresses of targets to call
        @param _calldata Array of calldata for each call
    */
    function callNoValue(
        address[] memory _targets,
        bytes[] memory _calldata
    ) external;

    /**
        @notice Lets whitelisted callers execute a single arbitrary call from the pool. Reverts if the call fails
        @param _target Address of the target to call
        @param _calldata Calldata of the call
        @param _value Amount of ETH to send with the call
    */
    function singleCall(
        address _target,
        bytes calldata _calldata,
        uint256 _value
    ) external;

    /**
        @notice Add a whitelisted caller. Can only be called by the contract owner
        @param _caller Caller to add
    */
    function addCaller(address _caller) external;

    /**
        @notice Remove a whitelisted caller. Can only be called by the contract owner
    */
    function removeCaller(address _caller) external;

    /**
        @notice Checks if an address is a whitelisted caller
        @param _caller Address to check
        @return If the address is whitelisted
    */
    function canCall(address _caller) external view returns (bool);

    /**
        @notice Get all whitelisted callers
        @return Array of whitelisted callers
    */
    function getCallers() external view returns (address[] memory);
}
// File: Interfaces/IERC20Facet.sol


pragma solidity ^0.7.1;

interface IERC20Facet {
    
    /**
        @notice Get the token name
        @return The token name
    */
    function name() external view returns (string memory);

    /**
        @notice Get the token symbol
        @return The token symbol 
    */
    function symbol() external view returns (string memory);

    /**
        @notice Get the amount of decimals
        @return Amount of decimals
    */
    function decimals() external view returns (uint8);

    /**
        @notice Mints tokens. Can only be called by the contract owner or the contract itself
        @param _receiver Address receiving the tokens
        @param _amount Amount to mint
    */
    function mint(address _receiver, uint256 _amount) external;

    /**
        @notice Burns tokens. Can only be called by the contract owner or the contract itself
        @param _from Address to burn from
        @param _amount Amount to burn
    */
    function burn(address _from, uint256 _amount) external;

    /**
        @notice Sets up the metadata and initial supply. Can be called by the contract owner
        @param _initialSupply Initial supply of the token
        @param _name Name of the token
        @param _symbol Symbol of the token
    */
    function initialize(
        uint256 _initialSupply,
        string memory _name,
        string memory _symbol
    ) external;

    /**
        @notice Set the token name of the contract. Can only be called by the contract owner or the contract itself
        @param _name New token name
    */
    function setName(string calldata _name) external;

    /**
        @notice Set the token symbol of the contract. Can only be called by the contract owner or the contract itself
        @param _symbol New token symbol
    */
    function setSymbol(string calldata _symbol) external;
    
    /**
        @notice Increase the amount of tokens another address can spend
        @param _spender Spender
        @param _amount Amount to increase by
    */
    function increaseApproval(address _spender, uint256 _amount) external returns (bool);

    /**
        @notice Decrease the amount of tokens another address can spend
        @param _spender Spender
        @param _amount Amount to decrease by
    */
    function decreaseApproval(address _spender, uint256 _amount) external returns (bool);

}
// File: Interfaces/IBasketFacet.sol


pragma solidity ^0.7.1;

interface IBasketFacet {

    event TokenAdded(address indexed _token);
    event TokenRemoved(address indexed _token);
    event EntryFeeSet(uint256 fee);
    event ExitFeeSet(uint256 fee);
    event AnnualizedFeeSet(uint256 fee);
    event FeeBeneficiarySet(address indexed beneficiary);
    event EntryFeeBeneficiaryShareSet(uint256 share);
    event ExitFeeBeneficiaryShareSet(uint256 share);

    event PoolJoined(address indexed who, uint256 amount);
    event PoolExited(address indexed who, uint256 amount);
    event FeeCharged(uint256 amount);
    event LockSet(uint256 lockBlock);
    event CapSet(uint256 cap);

    /** 
        @notice Sets entry fee paid when minting
        @param _fee Amount of fee. 1e18 == 100%, capped at 10%
    */
    function setEntryFee(uint256 _fee) external;

    /**
        @notice Get the entry fee
        @return Current entry fee
    */
    function getEntryFee() external view returns(uint256);

    /**
        @notice Set the exit fee paid when exiting
        @param _fee Amount of fee. 1e18 == 100%, capped at 10%
    */
    function setExitFee(uint256 _fee) external;

    /**
        @notice Get the exit fee
        @return Current exit fee
    */
    function getExitFee() external view returns(uint256);

    /**
        @notice Set the annualized fee. Often referred to as streaming fee
        @param _fee Amount of fee. 1e18 == 100%, capped at 10%
    */
    function setAnnualizedFee(uint256 _fee) external;

    /**
        @notice Get the annualized fee.
        @return Current annualized fee.
    */
    function getAnnualizedFee() external view returns(uint256);

    /**
        @notice Set the address receiving the fees.
    */
    function setFeeBeneficiary(address _beneficiary) external;

    /**
        @notice Get the fee benificiary
        @return The current fee beneficiary
    */
    function getFeeBeneficiary() external view returns(address);

    /**
        @notice Set the fee beneficiaries share of the entry fee
        @notice _share Share of the fee. 1e18 == 100%. Capped at 100% 
    */
    function setEntryFeeBeneficiaryShare(uint256 _share) external;

    /**
        @notice Get the entry fee beneficiary share
        @return Feeshare amount
    */
    function getEntryFeeBeneficiaryShare() external view returns(uint256);

    /**
        @notice Set the fee beneficiaries share of the exit fee
        @notice _share Share of the fee. 1e18 == 100%. Capped at 100% 
    */
    function setExitFeeBeneficiaryShare(uint256 _share) external;

    /**
        @notice Get the exit fee beneficiary share
        @return Feeshare amount
    */
    function getExitFeeBeneficiaryShare() external view returns(uint256);

    /**
        @notice Calculate the oustanding annualized fee
        @return Amount of pool tokens to be minted to charge the annualized fee
    */
    function calcOutStandingAnnualizedFee() external view returns(uint256);

    /**
        @notice Charges the annualized fee
    */
    function chargeOutstandingAnnualizedFee() external;

    /**
        @notice Pulls underlying from caller and mints the pool token
        @param _amount Amount of pool tokens to mint
    */
    function joinPool(uint256 _amount) external;

    /**
        @notice Burns pool tokens from the caller and returns underlying assets
    */
    function exitPool(uint256 _amount) external;

    /**
        @notice Get if the pool is locked or not. (not accepting exit and entry)
        @return Boolean indicating if the pool is locked
    */
    function getLock() external view returns (bool);

    /**
        @notice Get the block until which the pool is locked
        @return The lock block
    */
    function getLockBlock() external view returns (uint256);

    /**
        @notice Set the lock block
        @param _lock Block height of the lock
    */
    function setLock(uint256 _lock) external;

    /**
        @notice Get the maximum of pool tokens that can be minted
        @return Cap
    */
    function getCap() external view returns (uint256);

    /**
        @notice Set the maximum of pool tokens that can be minted
        @param _maxCap Max cap 
    */
    function setCap(uint256 _maxCap) external;

    /**
        @notice Get the amount of tokens owned by the pool
        @param _token Addres of the token
        @return Amount owned by the contract
    */
    function balance(address _token) external view returns (uint256);

    /**
        @notice Get the tokens in the pool
        @return Array of tokens in the pool
    */
    function getTokens() external view returns (address[] memory);

    /**
        @notice Add a token to the pool. Should have at least a balance of 10**6
        @param _token Address of the token to add
    */
    function addToken(address _token) external;

    /**
        @notice Removes a token from the pool
        @param _token Address of the token to remove
    */
    function removeToken(address _token) external;

    /**
        @notice Checks if a token was added to the pool
        @param _token address of the token
        @return If token is in the pool or not
    */
    function getTokenInPool(address _token) external view returns (bool);

    /**
        @notice Calculate the amounts of underlying needed to mint that pool amount.
        @param _amount Amount of pool tokens to mint
        @return tokens Tokens needed
        @return amounts Amounts of underlying needed
    */
    function calcTokensForAmount(uint256 _amount)
        external
        view
        returns (address[] memory tokens, uint256[] memory amounts);

    /**
        @notice Calculate the amounts of underlying to receive when burning that pool amount
        @param _amount Amount of pool tokens to burn
        @return tokens Tokens returned
        @return amounts Amounts of underlying returned
    */
    function calcTokensForAmountExit(uint256 _amount)
        external
        view
        returns (address[] memory tokens, uint256[] memory amounts);
}
// File: Diamond/PProxyStorage.sol

pragma solidity ^0.7.1;

contract PProxyStorage {

    function readBool(bytes32 _key) public view returns(bool) {
        return storageRead(_key) == bytes32(uint256(1));
    }

    function setBool(bytes32 _key, bool _value) internal {
        if(_value) {
            storageSet(_key, bytes32(uint256(1)));
        } else {
            storageSet(_key, bytes32(uint256(0)));
        }
    }

    function readAddress(bytes32 _key) public view returns(address) {
        return bytes32ToAddress(storageRead(_key));
    }

    function setAddress(bytes32 _key, address _value) internal {
        storageSet(_key, addressToBytes32(_value));
    }

    function storageRead(bytes32 _key) public view returns(bytes32) {
        bytes32 value;
        //solium-disable-next-line security/no-inline-assembly
        assembly {
            value := sload(_key)
        }
        return value;
    }

    function storageSet(bytes32 _key, bytes32 _value) internal {
        // targetAddress = _address;  // No!
        bytes32 implAddressStorageKey = _key;
        //solium-disable-next-line security/no-inline-assembly
        assembly {
            sstore(implAddressStorageKey, _value)
        }
    }

    function bytes32ToAddress(bytes32 _value) public pure returns(address) {
        return address(uint160(uint256(_value)));
    }

    function addressToBytes32(address _value) public pure returns(bytes32) {
        return bytes32(uint256(_value));
    }

}
// File: Diamond/PProxy.sol

pragma solidity ^0.7.1;


contract PProxy is PProxyStorage {

    bytes32 constant IMPLEMENTATION_SLOT = keccak256(abi.encodePacked("IMPLEMENTATION_SLOT"));
    bytes32 constant OWNER_SLOT = keccak256(abi.encodePacked("OWNER_SLOT"));

    modifier onlyProxyOwner() {
        require(msg.sender == readAddress(OWNER_SLOT), "PProxy.onlyProxyOwner: msg sender not owner");
        _;
    }

    constructor () public {
        setAddress(OWNER_SLOT, msg.sender);
    }

    function getProxyOwner() public view returns (address) {
       return readAddress(OWNER_SLOT);
    }

    function setProxyOwner(address _newOwner) onlyProxyOwner public {
        setAddress(OWNER_SLOT, _newOwner);
    }

    function getImplementation() public view returns (address) {
        return readAddress(IMPLEMENTATION_SLOT);
    }

    function setImplementation(address _newImplementation) onlyProxyOwner public {
        setAddress(IMPLEMENTATION_SLOT, _newImplementation);
    }


    fallback () external payable {
       return internalFallback();
    }

    function internalFallback() internal virtual {
        address contractAddr = readAddress(IMPLEMENTATION_SLOT);
        assembly {
            let ptr := mload(0x40)
            calldatacopy(ptr, 0, calldatasize())
            let result := delegatecall(gas(), contractAddr, ptr, calldatasize(), 0, 0)
            let size := returndatasize()
            returndatacopy(ptr, 0, size)

            switch result
            case 0 { revert(ptr, size) }
            default { return(ptr, size) }
        }
    }

}
// File: OpenZeppelin/Address.sol



pragma solidity ^0.7.0;

/**
 * @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) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly { codehash := extcodehash(account) }
        return (codehash != accountHash && codehash != 0x0);
    }

    /**
     * @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");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (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");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
        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

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}
// File: OpenZeppelin/SafeMath.sol



pragma solidity ^0.7.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}
// File: Interfaces/IERC20.sol



pragma solidity ^0.7.0;

/**
 * @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);
}
// File: OpenZeppelin/SafeERC20.sol



pragma solidity ^0.7.0;




/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        require((value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}
// File: OpenZeppelin/Context.sol



pragma solidity ^0.7.0;

/*
 * @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 GSN 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 payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}
// File: OpenZeppelin/Ownable.sol



pragma solidity ^0.7.0;

/**
 * @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.
 */
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 () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view 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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}
// File: Interfaces/IERC165.sol


pragma solidity ^0.7.1;

interface IERC165 {
    /// @notice Query if a contract implements an interface
    /// @param interfaceId The interface identifier, as specified in ERC-165
    /// @dev Interface identification is specified in ERC-165. This function
    ///  uses less than 30,000 gas.
    /// @return `true` if the contract implements `interfaceID` and
    ///  `interfaceID` is not 0xffffffff, `false` otherwise
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// File: Interfaces/IERC173.sol


pragma solidity ^0.7.1;

/// @title ERC-173 Contract Ownership Standard
///  Note: the ERC-165 identifier for this interface is 0x7f5828d0
/* is ERC165 */
interface IERC173 {
    /// @dev This emits when ownership of a contract changes.
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /// @notice Get the address of the owner
    /// @return owner_ The address of the owner.
    function owner() external view returns (address owner_);

    /// @notice Set the address of the new owner of the contract
    /// @dev Set _newOwner to address(0) to renounce any ownership.
    /// @param _newOwner The address of the new owner of the contract
    function transferOwnership(address _newOwner) external;
}
// File: Interfaces/IExperiPie.sol


pragma solidity ^0.7.1;


/**
    @title ExperiPie Interface
    @dev Combines all ExperiPie facet interfaces into one
*/
interface IExperiPie is IERC20, IBasketFacet, IERC20Facet, IERC173, ICallFacet {
}
// File: Interfaces/IDiamondLoupe.sol


pragma solidity ^0.7.1;

// A loupe is a small magnifying glass used to look at diamonds.
// These functions look at diamonds
interface IDiamondLoupe {
    /// These functions are expected to be called frequently
    /// by tools.

    struct Facet {
        address facetAddress;
        bytes4[] functionSelectors;
    }

    /// @notice Gets all facet addresses and their four byte function selectors.
    /// @return facets_ Facet
    function facets() external view returns (Facet[] memory facets_);

    /// @notice Gets all the function selectors supported by a specific facet.
    /// @param _facet The facet address.
    /// @return facetFunctionSelectors_
    function facetFunctionSelectors(address _facet) external view returns (bytes4[] memory facetFunctionSelectors_);

    /// @notice Get all the facet addresses used by a diamond.
    /// @return facetAddresses_
    function facetAddresses() external view returns (address[] memory facetAddresses_);

    /// @notice Gets the facet that supports the given selector.
    /// @dev If facet is not found return address(0).
    /// @param _functionSelector The function selector.
    /// @return facetAddress_ The facet address.
    function facetAddress(bytes4 _functionSelector) external view returns (address facetAddress_);
}
// File: Interfaces/IDiamondCut.sol


pragma solidity ^0.7.1;

/******************************************************************************\
* Author: Nick Mudge <[email protected]> (https://twitter.com/mudgen)
/******************************************************************************/

interface IDiamondCut {
    enum FacetCutAction {Add, Replace, Remove}

    struct FacetCut {
        address facetAddress;
        FacetCutAction action;
        bytes4[] functionSelectors;
    }

    /// @notice Add/replace/remove any number of functions and optionally execute
    ///         a function with delegatecall
    /// @param _diamondCut Contains the facet addresses and function selectors
    /// @param _init The address of the contract or facet to execute _calldata
    /// @param _calldata A function call, including function selector and arguments
    ///                  _calldata is executed with delegatecall on _init
    function diamondCut(
        FacetCut[] calldata _diamondCut,
        address _init,
        bytes calldata _calldata
    ) external;

    event DiamondCut(FacetCut[] _diamondCut, address _init, bytes _calldata);
}
// File: Diamond/LibDiamondInitialize.sol


pragma solidity ^0.7.1;

/******************************************************************************\
* Author: Mick de Graaf
*
* Tracks if the contract is already intialized or not
/******************************************************************************/


library LibDiamondInitialize {
    bytes32 constant DIAMOND_INITIALIZE_STORAGE_POSITION = keccak256("diamond.standard.initialize.diamond.storage");

    struct InitializedStorage {
        bool initialized;
    }

    function diamondInitializeStorage() internal pure returns (InitializedStorage storage ids) {
        bytes32 position = DIAMOND_INITIALIZE_STORAGE_POSITION;
        assembly {
            ids.slot := position
        }
    }

}
// File: Diamond/LibDiamond.sol


pragma solidity ^0.7.1;

/******************************************************************************\
* Author: Nick Mudge
*
* Implementation of Diamond facet.
* This is gas optimized by reducing storage reads and storage writes.
* This code is as complex as it is to reduce gas costs.
/******************************************************************************/


library LibDiamond {
        bytes32 constant DIAMOND_STORAGE_POSITION = keccak256("diamond.standard.diamond.storage");

    struct DiamondStorage {
        // maps function selectors to the facets that execute the functions.
        // and maps the selectors to their position in the selectorSlots array.        
        // func selector => address facet, selector position
        mapping(bytes4 => bytes32) facets;
        // array of slots of function selectors.
        // each slot holds 8 function selectors.
        mapping(uint256 => bytes32) selectorSlots;
        // The number of function selectors in selectorSlots
        uint16 selectorCount;
        // owner of the contract
        // Used to query if a contract implements an interface.
        // Used to implement ERC-165.
        mapping(bytes4 => bool) supportedInterfaces;
        // owner of the contract
        address contractOwner;
    }

    function diamondStorage() internal pure returns (DiamondStorage storage ds) {
        bytes32 position = DIAMOND_STORAGE_POSITION;
        assembly {
            ds.slot := position
        }
    }
   
   event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

   function setContractOwner(address _newOwner) internal {
        DiamondStorage storage ds = diamondStorage();
        address previousOwner = ds.contractOwner;
        ds.contractOwner = _newOwner;
        emit OwnershipTransferred(previousOwner, _newOwner);
    }

    function contractOwner() internal view returns (address contractOwner_) {
        contractOwner_ = diamondStorage().contractOwner;
    }

    function enforceIsContractOwner() view internal {
        require(msg.sender == diamondStorage().contractOwner, "LibDiamond: Must be contract owner");
    }

    modifier onlyOwner {
        require(msg.sender == diamondStorage().contractOwner, "LibDiamond: Must be contract owner");
        _;
    }

    event DiamondCut(IDiamondCut.FacetCut[] _diamondCut, address _init, bytes _calldata);

    bytes32 constant CLEAR_ADDRESS_MASK = bytes32(uint256(0xffffffffffffffffffffffff));
    bytes32 constant CLEAR_SELECTOR_MASK = bytes32(uint256(0xffffffff << 224));

    // Internal function version of diamondCut
    // This code is almost the same as the external diamondCut,
    // except it is using 'Facet[] memory _diamondCut' instead of
    // 'Facet[] calldata _diamondCut'.
    // The code is duplicated to prevent copying calldata to memory which
    // causes an error for a two dimensional array.
    function diamondCut(
        IDiamondCut.FacetCut[] memory _diamondCut,
        address _init,
        bytes memory _calldata
    ) internal {
        DiamondStorage storage ds = diamondStorage();
        uint256 originalSelectorCount = ds.selectorCount;
        uint256 selectorCount = originalSelectorCount;
        bytes32 selectorSlot;
        // Check if last selector slot is not full
        if (selectorCount % 8 > 0) {
            // get last selectorSlot
            selectorSlot = ds.selectorSlots[selectorCount / 8];
        }
        // loop through diamond cut
        for (uint256 facetIndex; facetIndex < _diamondCut.length; facetIndex++) {
            (selectorCount, selectorSlot) = addReplaceRemoveFacetSelectors(
                selectorCount,
                selectorSlot,
                _diamondCut[facetIndex].facetAddress,
                _diamondCut[facetIndex].action,
                _diamondCut[facetIndex].functionSelectors
            );
        }
        if (selectorCount != originalSelectorCount) {
            ds.selectorCount = uint16(selectorCount);
        }
        // If last selector slot is not full
        if (selectorCount % 8 > 0) {
            ds.selectorSlots[selectorCount / 8] = selectorSlot;
        }
        emit DiamondCut(_diamondCut, _init, _calldata);
        initializeDiamondCut(_init, _calldata);
    }

    function addReplaceRemoveFacetSelectors(
        uint256 _selectorCount,
        bytes32 _selectorSlot,
        address _newFacetAddress,
        IDiamondCut.FacetCutAction _action,
        bytes4[] memory _selectors
    ) internal returns (uint256, bytes32) {
        DiamondStorage storage ds = diamondStorage();
        require(_selectors.length > 0, "LibDiamondCut: No selectors in facet to cut");        
        if (_action == IDiamondCut.FacetCutAction.Add) {
            require(_newFacetAddress != address(0), "LibDiamondCut: Add facet can't be address(0)");
            enforceHasContractCode(_newFacetAddress, "LibDiamondCut: Add facet has no code");
            for (uint256 selectorIndex; selectorIndex < _selectors.length; selectorIndex++) {
                bytes4 selector = _selectors[selectorIndex];
                bytes32 oldFacet = ds.facets[selector];                
                require(address(bytes20(oldFacet)) == address(0), "LibDiamondCut: Can't add function that already exists");
                // add facet for selector                                
                ds.facets[selector] = bytes20(_newFacetAddress) | bytes32(_selectorCount);                
                uint256 selectorInSlotPosition = (_selectorCount % 8) * 32;
                // clear selector position in slot and add selector
                _selectorSlot =
                    (_selectorSlot & ~(CLEAR_SELECTOR_MASK >> selectorInSlotPosition)) |
                    (bytes32(selector) >> selectorInSlotPosition);
                // if slot is full then write it to storage
                if (selectorInSlotPosition == 224) {
                    ds.selectorSlots[_selectorCount / 8] = _selectorSlot;
                    _selectorSlot = 0;
                }
                _selectorCount++;
            }
        } else if(_action == IDiamondCut.FacetCutAction.Replace) {
            require(_newFacetAddress != address(0), "LibDiamondCut: Replace facet can't be address(0)");
            enforceHasContractCode(_newFacetAddress, "LibDiamondCut: Replace facet has no code");
            for (uint256 selectorIndex; selectorIndex < _selectors.length; selectorIndex++) {
                bytes4 selector = _selectors[selectorIndex];
                bytes32 oldFacet = ds.facets[selector];  
                address oldFacetAddress = address(bytes20(oldFacet));
                // only useful if immutable functions exist
                require(oldFacetAddress != address(this), "LibDiamondCut: Can't replace immutable function");
                require(oldFacetAddress != _newFacetAddress, "LibDiamondCut: Can't replace function with same function");
                require(oldFacetAddress != address(0), "LibDiamondCut: Can't replace function that doesn't exist");
                // replace old facet address
                ds.facets[selector] = (oldFacet & CLEAR_ADDRESS_MASK) | bytes20(_newFacetAddress);
            }
        } else if(_action == IDiamondCut.FacetCutAction.Remove) {
            require(_newFacetAddress == address(0), "LibDiamondCut: Remove facet address must be address(0)");
            uint256 selectorSlotCount = _selectorCount / 8;
            uint256 selectorInSlotIndex = (_selectorCount % 8) - 1;
            for (uint256 selectorIndex; selectorIndex < _selectors.length; selectorIndex++) {
                if (_selectorSlot == 0) {
                    // get last selectorSlot
                    selectorSlotCount--;
                    _selectorSlot = ds.selectorSlots[selectorSlotCount];
                    selectorInSlotIndex = 7;
                }
                bytes4 lastSelector;
                uint256 oldSelectorsSlotCount;
                uint256 oldSelectorInSlotPosition;
                // adding a block here prevents stack too deep error
                {
                    bytes4 selector = _selectors[selectorIndex];
                    bytes32 oldFacet = ds.facets[selector];
                    require(address(bytes20(oldFacet)) != address(0), "LibDiamondCut: Can't remove function that doesn't exist");
                    // only useful if immutable functions exist
                    require(address(bytes20(oldFacet)) != address(this), "LibDiamondCut: Can't remove immutable function");
                    // replace selector with last selector in ds.facets
                    // gets the last selector
                    lastSelector = bytes4(_selectorSlot << (selectorInSlotIndex * 32));
                    if (lastSelector != selector) {
                        // update last selector slot position info
                        ds.facets[lastSelector] = (oldFacet & CLEAR_ADDRESS_MASK) | bytes20(ds.facets[lastSelector]);
                    }
                    delete ds.facets[selector];
                    uint256 oldSelectorCount = uint16(uint256(oldFacet));
                    oldSelectorsSlotCount = oldSelectorCount / 8;
                    oldSelectorInSlotPosition = (oldSelectorCount % 8) * 32;
                }
                if (oldSelectorsSlotCount != selectorSlotCount) {
                    bytes32 oldSelectorSlot = ds.selectorSlots[oldSelectorsSlotCount];
                    // clears the selector we are deleting and puts the last selector in its place.
                    oldSelectorSlot =
                        (oldSelectorSlot & ~(CLEAR_SELECTOR_MASK >> oldSelectorInSlotPosition)) |
                        (bytes32(lastSelector) >> oldSelectorInSlotPosition);
                    // update storage with the modified slot
                    ds.selectorSlots[oldSelectorsSlotCount] = oldSelectorSlot;
                } else {
                    // clears the selector we are deleting and puts the last selector in its place.
                    _selectorSlot =
                        (_selectorSlot & ~(CLEAR_SELECTOR_MASK >> oldSelectorInSlotPosition)) |
                        (bytes32(lastSelector) >> oldSelectorInSlotPosition);
                }
                if (selectorInSlotIndex == 0) {
                    delete ds.selectorSlots[selectorSlotCount];
                    _selectorSlot = 0;
                }
                selectorInSlotIndex--;
            }
            _selectorCount = selectorSlotCount * 8 + selectorInSlotIndex + 1;
        } else {
            revert("LibDiamondCut: Incorrect FacetCutAction");
        }       
        return (_selectorCount, _selectorSlot);
    }

    function initializeDiamondCut(address _init, bytes memory _calldata) internal {
        if (_init == address(0)) {
            require(_calldata.length == 0, "LibDiamondCut: _init is address(0) but_calldata is not empty");
        } else {
            require(_calldata.length > 0, "LibDiamondCut: _calldata is empty but _init is not address(0)");
            if (_init != address(this)) {
                enforceHasContractCode(_init, "LibDiamondCut: _init address has no code");
            }
            (bool success, bytes memory error) = _init.delegatecall(_calldata);
            if (!success) {
                if (error.length > 0) {
                    // bubble up the error
                    revert(string(error));
                } else {
                    revert("LibDiamondCut: _init function reverted");
                }
            }
        }
    }

    function enforceHasContractCode(address _contract, string memory _errorMessage) internal view {
        uint256 contractSize;
        assembly {
            contractSize := extcodesize(_contract)
        }
        require(contractSize > 0, _errorMessage);
    }
}
// File: Diamond/Diamond.sol


pragma solidity ^0.7.1;

/******************************************************************************\
* Author: Nick Mudge <[email protected]> (https://twitter.com/mudgen)
*
* Implementation of a diamond.
/******************************************************************************/







contract Diamond {
    function initialize(IDiamondCut.FacetCut[] memory _diamondCut, address _owner) external payable {
        require(LibDiamondInitialize.diamondInitializeStorage().initialized == false, "ALREADY_INITIALIZED");
        LibDiamondInitialize.diamondInitializeStorage().initialized = true;
        LibDiamond.diamondCut(_diamondCut, address(0), new bytes(0));
        LibDiamond.setContractOwner(_owner);

        LibDiamond.DiamondStorage storage ds = LibDiamond.diamondStorage();

        // adding ERC165 data
        ds.supportedInterfaces[type(IERC165).interfaceId] = true;
        ds.supportedInterfaces[type(IDiamondCut).interfaceId] = true;
        ds.supportedInterfaces[type(IDiamondLoupe).interfaceId] = true;
        ds.supportedInterfaces[type(IERC173).interfaceId] = true;
    }

    // Find facet for function that is called and execute the
    // function if a facet is found and return any value.
    fallback() external payable {
        LibDiamond.DiamondStorage storage ds;
        bytes32 position = LibDiamond.DIAMOND_STORAGE_POSITION;
        assembly {
            ds.slot := position
        }
        address facet = address(bytes20(ds.facets[msg.sig]));
        require(facet != address(0), "Diamond: Function does not exist");
        assembly {
            calldatacopy(0, 0, calldatasize())
            let result := delegatecall(gas(), facet, 0, calldatasize(), 0, 0)
            returndatacopy(0, 0, returndatasize())
            switch result
                case 0 {
                    revert(0, returndatasize())
                }
                default {
                    return(0, returndatasize())
                }
        }
    }

    receive() external payable {}
}
// File: PieFactoryContract.sol


pragma solidity ^0.7.1;
pragma experimental ABIEncoderV2;






contract BasketFactoryContract is Ownable {
    using SafeERC20 for IERC20;

    address[] public baskets;
    mapping(address => bool) public isBasket;
    address public defaultController;
    address public diamondImplementation;

    IDiamondCut.FacetCut[] public defaultCut;

    event BasketCreated(
        address indexed basketAddress,
        address indexed deployer,
        uint256 indexed index
    );

    event DefaultControllerSet(address indexed controller);
    event FacetAdded(IDiamondCut.FacetCut);
    event FacetRemoved(IDiamondCut.FacetCut);

    constructor() {
        defaultController = msg.sender;
    }

    function setDefaultController(address _controller) external onlyOwner {
        defaultController = _controller;
        emit DefaultControllerSet(_controller);
    }

    function removeFacet(uint256 _index) external onlyOwner {
        require(_index < defaultCut.length, "INVALID_INDEX");
        emit FacetRemoved(defaultCut[_index]);
        defaultCut[_index] = defaultCut[defaultCut.length - 1];
        defaultCut.pop();
    }

    function addFacet(IDiamondCut.FacetCut memory _facet) external onlyOwner {
        defaultCut.push(_facet);
        emit FacetAdded(_facet);
    }

    // Diamond should be Initialized to prevent it from being selfdestructed
    function setDiamondImplementation(address _diamondImplementation) external onlyOwner {
        diamondImplementation = _diamondImplementation;
    }

    function bakeBasket(
        address[] memory _tokens,
        uint256[] memory _amounts,
        uint256 _initialSupply,
        string memory _symbol,
        string memory _name
    ) external {
        PProxy proxy = new PProxy();
        Diamond d = Diamond(address(proxy));

        proxy.setImplementation(diamondImplementation);

        d.initialize(defaultCut, address(this));

        baskets.push(address(d));
        isBasket[address(d)] = true;

        // emit DiamondCreated(address(d));
        require(_tokens.length != 0, "CANNOT_CREATE_ZERO_TOKEN_LENGTH_BASKET");
        require(_tokens.length == _amounts.length, "ARRAY_LENGTH_MISMATCH");

        IExperiPie basket = IExperiPie(address(d));

        // Init erc20 facet
        basket.initialize(_initialSupply, _name, _symbol);

        // Transfer and add tokens
        for (uint256 i = 0; i < _tokens.length; i++) {
            IERC20 token = IERC20(_tokens[i]);
            token.safeTransferFrom(msg.sender, address(basket), _amounts[i]);
            basket.addToken(_tokens[i]);
        }

        // Unlock pool
        basket.setLock(1);

        // Uncap pool
        basket.setCap(uint256(-1));

        // Send minted basket to msg.sender
        basket.transfer(msg.sender, _initialSupply);
        basket.transferOwnership(defaultController);
        proxy.setProxyOwner(defaultController);

        emit BasketCreated(address(d), msg.sender, baskets.length - 1);
    }

    function getDefaultCut()
        external
        view
        returns (IDiamondCut.FacetCut[] memory)
    {
        return defaultCut;
    }

    function getDefaultCutCount() external view returns (uint256) {
        return defaultCut.length;
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

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