// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
interface AccountImplementations {
    function getImplementation(bytes4 _sig) external view returns (address);
}
/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`.
 */
contract InstaAccountV2 {
    AccountImplementations public immutable implementations;
    constructor(address _implementations) {
        implementations = AccountImplementations(_implementations);
    }
    /**
     * @dev Delegates the current call to `implementation`.
     * 
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())
            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())
            switch result
            // delegatecall returns 0 on error.
            case 0 { revert(0, returndatasize()) }
            default { return(0, returndatasize()) }
        }
    }
    /**
     * @dev Delegates the current call to the address returned by Implementations registry.
     * 
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _fallback(bytes4 _sig) internal {
        address _implementation = implementations.getImplementation(_sig);
        require(_implementation != address(0), "InstaAccountV2: Not able to find _implementation");
        _delegate(_implementation);
    }
    /**
     * @dev Fallback function that delegates calls to the address returned by Implementations registry.
     */
    fallback () external payable {
        _fallback(msg.sig);
    }
    /**
     * @dev Fallback function that delegates calls to the address returned by Implementations registry.
     */
    receive () external payable {
        if (msg.sig != 0x00000000) {
            _fallback(msg.sig);
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
interface AccountImplementations {
    function getImplementation(bytes4 _sig) external view returns (address);
}
/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`.
 */
contract InstaAccountV2 {
    AccountImplementations public immutable implementations;
    constructor(address _implementations) {
        implementations = AccountImplementations(_implementations);
    }
    /**
     * @dev Delegates the current call to `implementation`.
     * 
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())
            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())
            switch result
            // delegatecall returns 0 on error.
            case 0 { revert(0, returndatasize()) }
            default { return(0, returndatasize()) }
        }
    }
    /**
     * @dev Delegates the current call to the address returned by Implementations registry.
     * 
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _fallback(bytes4 _sig) internal {
        address _implementation = implementations.getImplementation(_sig);
        require(_implementation != address(0), "InstaAccountV2: Not able to find _implementation");
        _delegate(_implementation);
    }
    /**
     * @dev Fallback function that delegates calls to the address returned by Implementations registry.
     */
    fallback () external payable {
        _fallback(msg.sig);
    }
    /**
     * @dev Fallback function that delegates calls to the address returned by Implementations registry.
     */
    receive () external payable {
        if (msg.sig != 0x00000000) {
            _fallback(msg.sig);
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
interface IndexInterface {
    function master() external view returns (address);
}
contract Setup {
    address public defaultImplementation;
    mapping (bytes4 => address) internal sigImplementations;
    mapping (address => bytes4[]) internal implementationSigs;
}
contract Implementations is Setup {
    event LogSetDefaultImplementation(address indexed oldImplementation, address indexed newImplementation);
    event LogAddImplementation(address indexed implementation, bytes4[] sigs);
    event LogRemoveImplementation(address indexed implementation, bytes4[] sigs);
    IndexInterface constant public instaIndex = IndexInterface(0x2971AdFa57b20E5a416aE5a708A8655A9c74f723);
    modifier isMaster() {
        require(msg.sender == instaIndex.master(), "Implementations: not-master");
        _;
    }
    function setDefaultImplementation(address _defaultImplementation) external isMaster {
        require(_defaultImplementation != address(0), "Implementations: _defaultImplementation address not valid");
        require(_defaultImplementation != defaultImplementation, "Implementations: _defaultImplementation cannot be same");
        emit LogSetDefaultImplementation(defaultImplementation, _defaultImplementation);
        defaultImplementation = _defaultImplementation;
    }
    function addImplementation(address _implementation, bytes4[] calldata _sigs) external isMaster {
        require(_implementation != address(0), "Implementations: _implementation not valid.");
        require(implementationSigs[_implementation].length == 0, "Implementations: _implementation already added.");
        for (uint i = 0; i < _sigs.length; i++) {
            bytes4 _sig = _sigs[i];
            require(sigImplementations[_sig] == address(0), "Implementations: _sig already added");
            sigImplementations[_sig] = _implementation;
        }
        implementationSigs[_implementation] = _sigs;
        emit LogAddImplementation(_implementation, _sigs);
    }
    function removeImplementation(address _implementation) external isMaster {
        require(_implementation != address(0), "Implementations: _implementation not valid.");
        require(implementationSigs[_implementation].length != 0, "Implementations: _implementation not found.");
        bytes4[] memory sigs = implementationSigs[_implementation];
        for (uint i = 0; i < sigs.length; i++) {
            bytes4 sig = sigs[i];
            delete sigImplementations[sig];
        }
        delete implementationSigs[_implementation];
        emit LogRemoveImplementation(_implementation, sigs);
    }
}
contract InstaImplementations is Implementations {
    function getImplementation(bytes4 _sig) external view returns (address) {
        address _implementation = sigImplementations[_sig];
        return _implementation == address(0) ? defaultImplementation : _implementation;
    }
    function getImplementationSigs(address _impl) external view returns (bytes4[] memory) {
        return implementationSigs[_impl];
    }
    function getSigImplementation(bytes4 _sig) external view returns (address) {
        return sigImplementations[_sig];
    }
}

pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
import { Variables } from "./variables.sol";
/**
 * @title InstaAccountV2.
 * @dev DeFi Smart Account Wallet.
 */
interface ConnectorsInterface {
    function isConnectors(string[] calldata connectorNames) external view returns (bool, address[] memory);
}
contract Constants is Variables {
    // InstaIndex Address.
    address internal immutable instaIndex;
    // Connectors Address.
    address public immutable connectorsM1;
    constructor(address _instaIndex, address _connectors) {
        connectorsM1 = _connectors;
        instaIndex = _instaIndex;
    }
}
contract InstaImplementationM1 is Constants {
    constructor(address _instaIndex, address _connectors) Constants(_instaIndex, _connectors) {}
    function decodeEvent(bytes memory response) internal pure returns (string memory _eventCode, bytes memory _eventParams) {
        if (response.length > 0) {
            (_eventCode, _eventParams) = abi.decode(response, (string, bytes));
        }
    }
    event LogCast(
        address indexed origin,
        address indexed sender,
        uint256 value,
        string[] targetsNames,
        address[] targets,
        string[] eventNames,
        bytes[] eventParams
    );
    receive() external payable {}
     /**
     * @dev Delegate the calls to Connector.
     * @param _target Connector address
     * @param _data CallData of function.
    */
    function spell(address _target, bytes memory _data) internal returns (bytes memory response) {
        require(_target != address(0), "target-invalid");
        assembly {
            let succeeded := delegatecall(gas(), _target, add(_data, 0x20), mload(_data), 0, 0)
            let size := returndatasize()
            
            response := mload(0x40)
            mstore(0x40, add(response, and(add(add(size, 0x20), 0x1f), not(0x1f))))
            mstore(response, size)
            returndatacopy(add(response, 0x20), 0, size)
            switch iszero(succeeded)
                case 1 {
                    // throw if delegatecall failed
                    returndatacopy(0x00, 0x00, size)
                    revert(0x00, size)
                }
        }
    }
    /**
     * @dev This is the main function, Where all the different functions are called
     * from Smart Account.
     * @param _targetNames Array of Connector address.
     * @param _datas Array of Calldata.
    */
    function cast(
        string[] calldata _targetNames,
        bytes[] calldata _datas,
        address _origin
    )
    external
    payable 
    returns (bytes32) // Dummy return to fix instaIndex buildWithCast function
    {   
        uint256 _length = _targetNames.length;
        require(_auth[msg.sender] || msg.sender == instaIndex, "1: permission-denied");
        require(_length != 0, "1: length-invalid");
        require(_length == _datas.length , "1: array-length-invalid");
        string[] memory eventNames = new string[](_length);
        bytes[] memory eventParams = new bytes[](_length);
        (bool isOk, address[] memory _targets) = ConnectorsInterface(connectorsM1).isConnectors(_targetNames);
        require(isOk, "1: not-connector");
        for (uint i = 0; i < _length; i++) {
            bytes memory response = spell(_targets[i], _datas[i]);
            (eventNames[i], eventParams[i]) = decodeEvent(response);
        }
        emit LogCast(
            _origin,
            msg.sender,
            msg.value,
            _targetNames,
            _targets,
            eventNames,
            eventParams
        );
    }
}pragma solidity ^0.7.0;
contract Variables {
    // Auth Module(Address of Auth => bool).
    mapping (address => bool) internal _auth;
}

pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
/**
 * @title InstaConnectorsV2
 * @dev Registry for Connectors.
 */
interface IndexInterface {
    function master() external view returns (address);
}
interface ConnectorInterface {
    function name() external view returns (string memory);
}
contract Controllers {
    event LogController(address indexed addr, bool indexed isChief);
    // InstaIndex Address.
    address public immutable instaIndex;
    constructor(address _instaIndex) {
        instaIndex = _instaIndex;
    }
    // Enabled Chief(Address of Chief => bool).
    mapping(address => bool) public chief;
    // Enabled Connectors(Connector name => address).
    mapping(string => address) public connectors;
    /**
    * @dev Throws if the sender not is Master Address from InstaIndex
    * or Enabled Chief.
    */
    modifier isChief {
        require(chief[msg.sender] || msg.sender == IndexInterface(instaIndex).master(), "not-an-chief");
        _;
    }
    /**
     * @dev Toggle a Chief. Enable if disable & vice versa
     * @param _chiefAddress Chief Address.
    */
    function toggleChief(address _chiefAddress) external {
        require(msg.sender == IndexInterface(instaIndex).master(), "toggleChief: not-master");
        chief[_chiefAddress] = !chief[_chiefAddress];
        emit LogController(_chiefAddress, chief[_chiefAddress]);
    }
}
contract InstaConnectorsV2 is Controllers {
    event LogConnectorAdded(
        bytes32 indexed connectorNameHash,
        string connectorName,
        address indexed connector
    );
    event LogConnectorUpdated(
        bytes32 indexed connectorNameHash,
        string connectorName,
        address indexed oldConnector,
        address indexed newConnector
    );
    event LogConnectorRemoved(
        bytes32 indexed connectorNameHash,
        string connectorName,
        address indexed connector
    );
    constructor(address _instaIndex) public Controllers(_instaIndex) {}
    /**
     * @dev Add Connectors
     * @param _connectorNames Array of Connector Names.
     * @param _connectors Array of Connector Address.
    */
    function addConnectors(string[] calldata _connectorNames, address[] calldata _connectors) external isChief {
        require(_connectors.length == _connectors.length, "addConnectors: not same length");
        for (uint i = 0; i < _connectors.length; i++) {
            require(connectors[_connectorNames[i]] == address(0), "addConnectors: _connectorName added already");
            require(_connectors[i] != address(0), "addConnectors: _connectors address not vaild");
            ConnectorInterface(_connectors[i]).name(); // Checking if connector has function name()
            connectors[_connectorNames[i]] = _connectors[i];
            emit LogConnectorAdded(keccak256(abi.encodePacked(_connectorNames[i])), _connectorNames[i], _connectors[i]);
        }
    }
    /**
     * @dev Update Connectors
     * @param _connectorNames Array of Connector Names.
     * @param _connectors Array of Connector Address.
    */
    function updateConnectors(string[] calldata _connectorNames, address[] calldata _connectors) external isChief {
        require(_connectorNames.length == _connectors.length, "updateConnectors: not same length");
        for (uint i = 0; i < _connectors.length; i++) {
            require(connectors[_connectorNames[i]] != address(0), "updateConnectors: _connectorName not added to update");
            require(_connectors[i] != address(0), "updateConnectors: _connector address is not vaild");
            ConnectorInterface(_connectors[i]).name(); // Checking if connector has function name()
            emit LogConnectorUpdated(keccak256(abi.encodePacked(_connectorNames[i])), _connectorNames[i], connectors[_connectorNames[i]], _connectors[i]);
            connectors[_connectorNames[i]] = _connectors[i];
        }
    }
    /**
     * @dev Remove Connectors
     * @param _connectorNames Array of Connector Names.
    */
    function removeConnectors(string[] calldata _connectorNames) external isChief {
        for (uint i = 0; i < _connectorNames.length; i++) {
            require(connectors[_connectorNames[i]] != address(0), "removeConnectors: _connectorName not added to update");
            emit LogConnectorRemoved(keccak256(abi.encodePacked(_connectorNames[i])), _connectorNames[i], connectors[_connectorNames[i]]);
            delete connectors[_connectorNames[i]];
        }
    }
    /**
     * @dev Check if Connector addresses are enabled.
     * @param _connectors Array of Connector Names.
    */
    function isConnectors(string[] calldata _connectorNames) external view returns (bool isOk, address[] memory _connectors) {
        isOk = true;
        uint len = _connectorNames.length;
        _connectors = new address[](len);
        for (uint i = 0; i < _connectors.length; i++) {
            _connectors[i] = connectors[_connectorNames[i]];
            if (_connectors[i] == address(0)) {
                isOk = false;
                break;
            }
        }
    }
}

pragma solidity ^0.7.0;
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { DSMath } from "../../common/math.sol";
import { Basic } from "../../common/basic.sol";
import { Events } from "./events.sol";
abstract contract BasicResolver is Events, DSMath, Basic {
    using SafeERC20 for IERC20;
    /**
     * @dev Deposit Assets To Smart Account.
     * @param token Token Address.
     * @param amt Token Amount.
     * @param getId Get Storage ID.
     * @param setId Set Storage ID.
     */
    function deposit(
        address token,
        uint256 amt,
        uint256 getId,
        uint256 setId
    ) public payable returns (string memory _eventName, bytes memory _eventParam) {
        uint _amt = getUint(getId, amt);
        if (token != ethAddr) {
            IERC20 tokenContract = IERC20(token);
            _amt = _amt == uint(-1) ? tokenContract.balanceOf(msg.sender) : _amt;
            tokenContract.safeTransferFrom(msg.sender, address(this), _amt);
        } else {
            require(msg.value == _amt || _amt == uint(-1), "invalid-ether-amount");
            _amt = msg.value;
        }
        setUint(setId, _amt);
        _eventName = "LogDeposit(address,uint256,uint256,uint256)";
        _eventParam = abi.encode(token, _amt, getId, setId);
    }
    /**
     * @dev Withdraw Assets To Smart Account.
     * @param token Token Address.
     * @param amt Token Amount.
     * @param to Withdraw token address.
     * @param getId Get Storage ID.
     * @param setId Set Storage ID.
     */
    function withdraw(
        address token,
        uint amt,
        address payable to,
        uint getId,
        uint setId
    ) public payable returns (string memory _eventName, bytes memory _eventParam) {
        uint _amt = getUint(getId, amt);
        if (token == ethAddr) {
            _amt = _amt == uint(-1) ? address(this).balance : _amt;
            to.call{value: _amt}("");
        } else {
            IERC20 tokenContract = IERC20(token);
            _amt = _amt == uint(-1) ? tokenContract.balanceOf(address(this)) : _amt;
            tokenContract.safeTransfer(to, _amt);
        }
        setUint(setId, _amt);
        _eventName = "LogWithdraw(address,uint256,address,uint256,uint256)";
        _eventParam = abi.encode(token, _amt, to, getId, setId);
    }
}
contract ConnectV2Basic is BasicResolver {
    string constant public name = "Basic-v1";
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "./IERC20.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";
/**
 * @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");
        }
    }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <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);
}
pragma solidity ^0.7.0;
import { SafeMath } from "@openzeppelin/contracts/math/SafeMath.sol";
contract DSMath {
  uint constant WAD = 10 ** 18;
  uint constant RAY = 10 ** 27;
  function add(uint x, uint y) internal pure returns (uint z) {
    z = SafeMath.add(x, y);
  }
  function sub(uint x, uint y) internal virtual pure returns (uint z) {
    z = SafeMath.sub(x, y);
  }
  function mul(uint x, uint y) internal pure returns (uint z) {
    z = SafeMath.mul(x, y);
  }
  function div(uint x, uint y) internal pure returns (uint z) {
    z = SafeMath.div(x, y);
  }
  function wmul(uint x, uint y) internal pure returns (uint z) {
    z = SafeMath.add(SafeMath.mul(x, y), WAD / 2) / WAD;
  }
  function wdiv(uint x, uint y) internal pure returns (uint z) {
    z = SafeMath.add(SafeMath.mul(x, WAD), y / 2) / y;
  }
  function rdiv(uint x, uint y) internal pure returns (uint z) {
    z = SafeMath.add(SafeMath.mul(x, RAY), y / 2) / y;
  }
  function rmul(uint x, uint y) internal pure returns (uint z) {
    z = SafeMath.add(SafeMath.mul(x, y), RAY / 2) / RAY;
  }
  function toInt(uint x) internal pure returns (int y) {
    y = int(x);
    require(y >= 0, "int-overflow");
  }
  function toRad(uint wad) internal pure returns (uint rad) {
    rad = mul(wad, 10 ** 27);
  }
}
pragma solidity ^0.7.0;
import { TokenInterface } from "./interfaces.sol";
import { Stores } from "./stores.sol";
import { DSMath } from "./math.sol";
abstract contract Basic is DSMath, Stores {
    function convert18ToDec(uint _dec, uint256 _amt) internal pure returns (uint256 amt) {
        amt = (_amt / 10 ** (18 - _dec));
    }
    function convertTo18(uint _dec, uint256 _amt) internal pure returns (uint256 amt) {
        amt = mul(_amt, 10 ** (18 - _dec));
    }
    function getTokenBal(TokenInterface token) internal view returns(uint _amt) {
        _amt = address(token) == ethAddr ? address(this).balance : token.balanceOf(address(this));
    }
    function getTokensDec(TokenInterface buyAddr, TokenInterface sellAddr) internal view returns(uint buyDec, uint sellDec) {
        buyDec = address(buyAddr) == ethAddr ?  18 : buyAddr.decimals();
        sellDec = address(sellAddr) == ethAddr ?  18 : sellAddr.decimals();
    }
    function encodeEvent(string memory eventName, bytes memory eventParam) internal pure returns (bytes memory) {
        return abi.encode(eventName, eventParam);
    }
    function changeEthAddress(address buy, address sell) internal pure returns(TokenInterface _buy, TokenInterface _sell){
        _buy = buy == ethAddr ? TokenInterface(wethAddr) : TokenInterface(buy);
        _sell = sell == ethAddr ? TokenInterface(wethAddr) : TokenInterface(sell);
    }
    function convertEthToWeth(bool isEth, TokenInterface token, uint amount) internal {
        if(isEth) token.deposit{value: amount}();
    }
    function convertWethToEth(bool isEth, TokenInterface token, uint amount) internal {
       if(isEth) {
            token.approve(address(token), amount);
            token.withdraw(amount);
        }
    }
}
pragma solidity ^0.7.0;
contract Events {
    event LogDeposit(address indexed erc20, uint256 tokenAmt, uint256 getId, uint256 setId);
    event LogWithdraw(address indexed erc20, uint256 tokenAmt, address indexed to, uint256 getId, uint256 setId);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
 * @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, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }
    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }
    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, 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 (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }
    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }
    /**
     * @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) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }
    /**
     * @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) {
        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, reverting 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) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting 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) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * 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);
        return a - b;
    }
    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * 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);
        return a / b;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * 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;
    }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <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;
        // solhint-disable-next-line no-inline-assembly
        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");
        // 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");
        require(isContract(target), "Address: call to non-contract");
        // solhint-disable-next-line avoid-low-level-calls
        (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");
        // solhint-disable-next-line avoid-low-level-calls
        (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");
        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }
    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private 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
                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}
pragma solidity ^0.7.0;
interface TokenInterface {
    function approve(address, uint256) external;
    function transfer(address, uint) external;
    function transferFrom(address, address, uint) external;
    function deposit() external payable;
    function withdraw(uint) external;
    function balanceOf(address) external view returns (uint);
    function decimals() external view returns (uint);
}
interface MemoryInterface {
    function getUint(uint id) external returns (uint num);
    function setUint(uint id, uint val) external;
}
interface InstaMapping {
    function cTokenMapping(address) external view returns (address);
    function gemJoinMapping(bytes32) external view returns (address);
}
interface AccountInterface {
    function enable(address) external;
    function disable(address) external;
    function isAuth(address) external view returns (bool);
}
pragma solidity ^0.7.0;
import { MemoryInterface, InstaMapping } from "./interfaces.sol";
abstract contract Stores {
  /**
   * @dev Return ethereum address
   */
  address constant internal ethAddr = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
  /**
   * @dev Return Wrapped ETH address
   */
  address constant internal wethAddr = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
  /**
   * @dev Return memory variable address
   */
  MemoryInterface constant internal instaMemory = MemoryInterface(0x8a5419CfC711B2343c17a6ABf4B2bAFaBb06957F);
  /**
   * @dev Return InstaDApp Mapping Addresses
   */
  InstaMapping constant internal instaMapping = InstaMapping(0xe81F70Cc7C0D46e12d70efc60607F16bbD617E88);
  /**
   * @dev Get Uint value from InstaMemory Contract.
   */
  function getUint(uint getId, uint val) internal returns (uint returnVal) {
    returnVal = getId == 0 ? val : instaMemory.getUint(getId);
  }
  /**
  * @dev Set Uint value in InstaMemory Contract.
  */
  function setUint(uint setId, uint val) virtual internal {
    if (setId != 0) instaMemory.setUint(setId, val);
  }
}