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/**
 *Submitted for verification at Etherscan.io on 2021-05-14
*/

pragma solidity ^0.6.7;

contract Vester {
    address public immutable token;
    address public recipient;

    uint public immutable vestingAmount;
    uint public immutable vestingBegin;
    uint public immutable vestingCliff;
    uint public immutable vestingEnd;

    uint public lastUpdate;

    constructor(
        address token_,
        address recipient_,    
        uint vestingAmount_,
        uint vestingBegin_,
        uint vestingCliff_,
        uint vestingEnd_
    ) public {
        require(vestingBegin_ >= block.timestamp, 'Vester::constructor: vesting begin too early');
        require(vestingCliff_ >= vestingBegin_, 'Vester::constructor: cliff is too early');
        require(vestingEnd_ > vestingCliff_, 'Vester::constructor: end is too early');

        token = token_;
        recipient = recipient_;

        vestingAmount = vestingAmount_;
        vestingBegin = vestingBegin_;
        vestingCliff = vestingCliff_;
        vestingEnd = vestingEnd_;

        lastUpdate = vestingBegin_;
    }

    function setRecipient(address recipient_) public {
        require(msg.sender == recipient, 'Vester::setRecipient: unauthorized');
        recipient = recipient_;
    }

    function claim() public {
        require(block.timestamp >= vestingCliff, 'Vester::claim: not time yet');
        uint amount;
        if (block.timestamp >= vestingEnd) {
            amount = IERC20(token).balanceOf(address(this));
        } else {
            amount = mul(vestingAmount, (block.timestamp - lastUpdate)) / (vestingEnd - vestingBegin);
            lastUpdate = block.timestamp;
        }
        IERC20(token).transfer(recipient, amount);
    }

    function mul(uint a, uint b) internal pure returns (uint c) {
        require(b == 0 || (c = a * b) / b == a, 'Vester::mul: multiplication overflow');
    }    
}

interface IERC20 {
    function balanceOf(address account) external view returns (uint);
    function transfer(address dst, uint rawAmount) external returns (bool);
}

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[{"inputs":[{"internalType":"address","name":"token_","type":"address"},{"internalType":"address","name":"recipient_","type":"address"},{"internalType":"uint256","name":"vestingAmount_","type":"uint256"},{"internalType":"uint256","name":"vestingBegin_","type":"uint256"},{"internalType":"uint256","name":"vestingCliff_","type":"uint256"},{"internalType":"uint256","name":"vestingEnd_","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"claim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"lastUpdate","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"recipient","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient_","type":"address"}],"name":"setRecipient","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"vestingAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"vestingBegin","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"vestingCliff","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"vestingEnd","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]

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000000000000000000000000bebdab6da046bc49ffbb61fbd7b33157eb270d05000000000000000000000000d68f36eda870687bc3e901fda4fd55d803f1502400000000000000000000000000000000000000000024655cc78b38d7ac0000000000000000000000000000000000000000000000000000000000000060b578800000000000000000000000000000000000000000000000000000000060b5788000000000000000000000000000000000000000000000000000000000683b9800

-----Decoded View---------------
Arg [0] : token_ (address): 0xBeBdab6DA046Bc49ffBb61fbD7b33157Eb270D05
Arg [1] : recipient_ (address): 0xD68F36EDA870687BC3E901FDA4FD55d803F15024
Arg [2] : vestingAmount_ (uint256): 44000000000000000000000000
Arg [3] : vestingBegin_ (uint256): 1622505600
Arg [4] : vestingCliff_ (uint256): 1622505600
Arg [5] : vestingEnd_ (uint256): 1748736000

-----Encoded View---------------
6 Constructor Arguments found :
Arg [0] : 000000000000000000000000bebdab6da046bc49ffbb61fbd7b33157eb270d05
Arg [1] : 000000000000000000000000d68f36eda870687bc3e901fda4fd55d803f15024
Arg [2] : 00000000000000000000000000000000000000000024655cc78b38d7ac000000
Arg [3] : 0000000000000000000000000000000000000000000000000000000060b57880
Arg [4] : 0000000000000000000000000000000000000000000000000000000060b57880
Arg [5] : 00000000000000000000000000000000000000000000000000000000683b9800

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ipfs://c68838776eeaa0c45c3c7b656a322de60c111ab1766ce4e4ea5f35210c09f8ca