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// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;

import '../modules/FoldingAccount/FoldingAccountStorage.sol';
import './interfaces/IFoldingConnectorProvider.sol';

contract FoldingAccount is FoldingAccountStorage {
    constructor(address foldingRegistry, address nft) public {
        AccountStore storage store = aStore();

        store.foldingRegistry = foldingRegistry;
        store.nft = nft;
    }

    /// @notice Find the connector for `msg.sig` and delegate call it with `msg.data`
    function delegate() private {
        bool firstCall = false; // We need to delete the entryCaller on exit

        AccountStore storage accountStorage = aStore();
        if (accountStorage.entryCaller == address(0)) {
            accountStorage.entryCaller = msg.sender;
            firstCall = true;
        }
        // Check if a connector expects a callback or find connector
        address impl = accountStorage.callbackTarget;
        if (impl != address(0)) {
            require(accountStorage.expectedCallbackSig == msg.sig, 'FA1');
        } else {
            impl = IFoldingConnectorProvider(accountStorage.foldingRegistry).getImplementation(msg.sig);
        }

        /// @dev This assembly code returns directly to caller
        assembly {
            calldatacopy(0, 0, calldatasize())
            let result := delegatecall(gas(), impl, 0, calldatasize(), 0, 0)
            let size := returndatasize()
            returndatacopy(0, 0, size)
            switch result
            case 0 {
                revert(0, size)
            }
            default {
                /// @dev if this is the first call, set the entryCaller to 0
                if firstCall {
                    sstore(accountStorage_slot, 0)
                }
                return(0, size)
            }
        }
    }

    fallback() external payable {
        if (msg.sig != bytes4(0)) delegate();
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;

contract FoldingAccountStorage {
    bytes32 constant ACCOUNT_STORAGE_POSITION = keccak256('folding.account.storage');

    /**
     * entryCaller:         address of the caller of the account, during a transaction
     *
     * callbackTarget:      address of logic to be run when expecting a callback
     *
     * expectedCallbackSig: signature of function to be run when expecting a callback
     *
     * foldingRegistry      address of factory creating FoldingAccount
     *
     * nft:                 address of the nft contract.
     *
     * owner:               address of the owner of this FoldingAccount.
     */
    struct AccountStore {
        address entryCaller;
        address callbackTarget;
        bytes4 expectedCallbackSig;
        address foldingRegistry;
        address nft;
        address owner;
    }

    modifier onlyAccountOwner() {
        AccountStore storage s = aStore();
        require(s.entryCaller == s.owner, 'FA2');
        _;
    }

    modifier onlyNFTContract() {
        AccountStore storage s = aStore();
        require(s.entryCaller == s.nft, 'FA3');
        _;
    }

    modifier onlyAccountOwnerOrRegistry() {
        AccountStore storage s = aStore();
        require(s.entryCaller == s.owner || s.entryCaller == s.foldingRegistry, 'FA4');
        _;
    }

    function aStore() internal pure returns (AccountStore storage s) {
        bytes32 position = ACCOUNT_STORAGE_POSITION;
        assembly {
            s_slot := position
        }
    }

    function accountOwner() internal view returns (address) {
        return aStore().owner;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;

interface IFoldingConnectorProvider {
    function getImplementation(bytes4 functionSignature) external view returns (address implementation);
}

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"foldingRegistry","type":"address"},{"internalType":"address","name":"nft","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"stateMutability":"payable","type":"fallback"}]

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

000000000000000000000000ec6b351778aaa2349a8726b4837e05232ef20d03000000000000000000000000b410075e1e13c182475b2d0ece9445f2710ab197

-----Decoded View---------------
Arg [0] : foldingRegistry (address): 0xEc6b351778aAA2349a8726B4837e05232ef20d03
Arg [1] : nft (address): 0xB410075E1E13c182475b2D0Ece9445f2710AB197

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000ec6b351778aaa2349a8726b4837e05232ef20d03
Arg [1] : 000000000000000000000000b410075e1e13c182475b2d0ece9445f2710ab197