Address Details
contract

0xAB7064715B7944110EF7138C0c55D3c4132BdFd5

Contract Name
CycleTrader
Creator
0x5ca621–4f95fd at 0x4694da–7c3fb4
Balance
0 CELO ( )
Locked CELO Balance
0.00 CELO
Voting CELO Balance
0.00 CELO
Pending Unlocked Gold
0.00 CELO
Tokens
Fetching tokens...
Transactions
752,080 Transactions
Transfers
811,481 Transfers
Gas Used
391,847,396,768
Last Balance Update
17866020
This contract has been verified via Sourcify. View contract in Sourcify repository
Contract name:
CycleTrader




Optimization enabled
true
Compiler version
v0.6.12+commit.27d51765




Optimization runs
200
EVM Version
istanbul




Verified at
2021-12-18T07:12:12.755635Z

project:/contracts/CycleTrader.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
pragma experimental ABIEncoderV2;

import { ISwappaRouterV1 } from "./ISwappaRouterV1.sol";
import { SafeMath } from "./Libraries.sol";
import { IERC20 } from "./Interfaces.sol";

interface ChiToken {
    function freeFromUpTo(address from, uint256 value) external;
}

contract CycleTrader {
    ISwappaRouterV1 public immutable swappaRouter;
    ChiToken public immutable chiToken;
    using SafeMath for uint256;

    constructor(ISwappaRouterV1 swappa, ChiToken chi) public {
        swappaRouter = swappa;
        chiToken = chi;
    }

    receive() payable external {}

    modifier discountCHI {
        uint256 gasStart = gasleft();

        _;

        uint256 initialGas = 21000 + 16 * msg.data.length;
        uint256 gasSpent = initialGas + gasStart - gasleft();
        uint256 freeUpValue = (gasSpent + 14154) / 41947;

        chiToken.freeFromUpTo(msg.sender, freeUpValue);
    }

    function trade(
            address[] calldata path,
            address[] calldata pairs,
            bytes[] calldata extras,
            uint256 inputAmount,
            uint256 minOutputAmount,
            uint deadline
        ) external payable discountCHI {
        if (deadline < block.timestamp) {
            // past deadline, do nothing
            return;
        }
        if (swappaRouter.getOutputAmount(path, pairs, extras, inputAmount) < minOutputAmount) {
            // money losing trade, do nothing
            return;
        }

        // take the input and approve for swappa router
        IERC20(path[0]).transferFrom(msg.sender, address(this), inputAmount);
        IERC20(path[0]).approve(address(swappaRouter), inputAmount);

        // run the swappa trade
        swappaRouter.swapExactInputForOutput(
            path,
            pairs,
            extras,
            inputAmount,
            minOutputAmount,
            // send the output of the trade to the message sender
            msg.sender,
            deadline
        );
    }
}

Contract ABI

[{"type":"constructor","stateMutability":"nonpayable","inputs":[{"type":"address","name":"swappa","internalType":"contract ISwappaRouterV1"},{"type":"address","name":"chi","internalType":"contract ChiToken"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"contract ChiToken"}],"name":"chiToken","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"contract ISwappaRouterV1"}],"name":"swappaRouter","inputs":[]},{"type":"function","stateMutability":"payable","outputs":[],"name":"trade","inputs":[{"type":"address[]","name":"path","internalType":"address[]"},{"type":"address[]","name":"pairs","internalType":"address[]"},{"type":"bytes[]","name":"extras","internalType":"bytes[]"},{"type":"uint256","name":"inputAmount","internalType":"uint256"},{"type":"uint256","name":"minOutputAmount","internalType":"uint256"},{"type":"uint256","name":"deadline","internalType":"uint256"}]},{"type":"receive","stateMutability":"payable"}]

Contract Creation Code

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Deployed ByteCode

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