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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "./libraries/DiamondCloneMinimalLib.sol";

// Contract Author: https://juicelabs.io

error FunctionDoesNotExist();

contract DiamondClone {
    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    constructor(address sawAddress, address[] memory facetAddresses) {
        // set the owner
        DiamondCloneMinimalLib.accessControlStorage()._owner = msg.sender;
        emit OwnershipTransferred(address(0), msg.sender);

        // First facet should be the diamondFacet
        (, bytes memory err) = facetAddresses[0].delegatecall(
            abi.encodeWithSelector(
                0xf44a9d52, // initializeDiamondClone Selector
                sawAddress,
                facetAddresses
            )
        );
        if (err.length > 0) {
            revert(string(err));
        }
    }

    // Find facet for function that is called and execute the
    // function if a facet is found and return any value.
    fallback() external payable {
        // retrieve the facet address
        address facet = DiamondCloneMinimalLib._getFacetAddressForCall();

        // check if the facet address exists on the saw AND is included in our local cut
        if (facet == address(0)) revert FunctionDoesNotExist();

        // Execute external function from facet using delegatecall and return any value.
        assembly {
            // copy function selector and any arguments
            calldatacopy(0, 0, calldatasize())
            // execute function call using the facet
            let result := delegatecall(gas(), facet, 0, calldatasize(), 0, 0)
            // get any return value
            returndatacopy(0, 0, returndatasize())
            // return any return value or error back to the caller
            switch result
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }

    receive() external payable {}
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

error FailedToFetchFacet();

// minimal inline subset of the full DiamondCloneLib to reduce deployment gas costs
library DiamondCloneMinimalLib {
    bytes32 constant DIAMOND_CLONE_STORAGE_POSITION =
        keccak256("diamond.standard.diamond.clone.storage");
    bytes32 constant ACCESS_CONTROL_STORAGE_POSITION =
        keccak256("Access.Control.library.storage");

    struct DiamondCloneStorage {
        // address of the diamond saw contract
        address diamondSawAddress;
        // mapping to all the facets this diamond implements.
        mapping(address => bool) facetAddresses;
        // gas cache
        mapping(bytes4 => address) selectorGasCache;
    }

    struct AccessControlStorage {
        address _owner;
    }

    function diamondCloneStorage()
        internal
        pure
        returns (DiamondCloneStorage storage s)
    {
        bytes32 position = DIAMOND_CLONE_STORAGE_POSITION;
        assembly {
            s.slot := position
        }
    }

    // calls externally to the saw to find the appropriate facet to delegate to
    function _getFacetAddressForCall() internal view returns (address addr) {
        DiamondCloneStorage storage s = diamondCloneStorage();

        addr = s.selectorGasCache[msg.sig];
        if (addr != address(0)) {
            return addr;
        }

        (bool success, bytes memory res) = s.diamondSawAddress.staticcall(
            abi.encodeWithSelector(0x14bc7560, msg.sig) // facetAddressForSelector
        );

        if (!success) revert FailedToFetchFacet();

        assembly {
            addr := mload(add(res, 32))
        }

        return s.facetAddresses[addr] ? addr : address(0);
    }

    function accessControlStorage()
        internal
        pure
        returns (AccessControlStorage storage s)
    {
        bytes32 position = ACCESS_CONTROL_STORAGE_POSITION;
        assembly {
            s.slot := position
        }
    }
}

{
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

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[{"inputs":[{"internalType":"address","name":"sawAddress","type":"address"},{"internalType":"address[]","name":"facetAddresses","type":"address[]"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"FailedToFetchFacet","type":"error"},{"inputs":[],"name":"FunctionDoesNotExist","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"stateMutability":"payable","type":"fallback"},{"stateMutability":"payable","type":"receive"}]

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

000000000000000000000000b8ece8aa502937c978b499065f01f2d5dd1fd2e200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000002000000000000000000000000d20ca343fe49dab5c69dce859dfe1a694def645500000000000000000000000083c8e59dad2905e53203f8448f84bd525d82b56b

-----Decoded View---------------
Arg [0] : sawAddress (address): 0xB8Ece8Aa502937c978B499065F01f2D5dd1FD2e2
Arg [1] : facetAddresses (address[]): 0xd20ca343fe49Dab5C69dCE859dFE1a694DeF6455,0x83c8e59daD2905E53203F8448f84bD525D82b56B

-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 000000000000000000000000b8ece8aa502937c978b499065f01f2d5dd1fd2e2
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000040
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [3] : 000000000000000000000000d20ca343fe49dab5c69dce859dfe1a694def6455
Arg [4] : 00000000000000000000000083c8e59dad2905e53203f8448f84bd525d82b56b