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// Sources flattened with hardhat v2.14.0 https://hardhat.org

// File contracts/interfaces/IVS.sol

pragma solidity 0.8.13;

interface IVS {
    function totalSupply() external view returns (uint);
    function balanceOf(address) external view returns (uint);
    function approve(address spender, uint value) external returns (bool);
    function transfer(address, uint) external returns (bool);
    function transferFrom(address,address,uint) external returns (bool);
    function mint(address, uint) external returns (bool);
    function minter() external returns (address);
}


// File contracts/VS.sol

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.8.13;

contract VS is IVS {

    string public constant name = "veSync";
    string public constant symbol = "VS";
    uint8 public constant decimals = 18;
    uint public totalSupply = 0;

    mapping(address => uint) public balanceOf;
    mapping(address => mapping(address => uint)) public allowance;

    address public minter;

    event Transfer(address indexed from, address indexed to, uint value);
    event Approval(address indexed owner, address indexed spender, uint value);

    constructor() {
        minter = msg.sender;
        _mint(msg.sender, 0);
    }

    // It's meant to be once off to set minting rights to Minter
    function setMinter(address _minter) external {
        require(msg.sender == minter);
        minter = _minter;
    }

    function approve(address _spender, uint _value) external returns (bool) {
        allowance[msg.sender][_spender] = _value;
        emit Approval(msg.sender, _spender, _value);
        return true;
    }

    function _mint(address _to, uint _amount) internal returns (bool) {
        totalSupply += _amount;
        unchecked {
            balanceOf[_to] += _amount;
        }
        emit Transfer(address(0x0), _to, _amount);
        return true;
    }

    function _transfer(address _from, address _to, uint _value) internal returns (bool) {
        balanceOf[_from] -= _value;
        unchecked {
            balanceOf[_to] += _value;
        }
        emit Transfer(_from, _to, _value);
        return true;
    }

    function transfer(address _to, uint _value) external returns (bool) {
        return _transfer(msg.sender, _to, _value);
    }

    function transferFrom(address _from, address _to, uint _value) external returns (bool) {
        uint allowed_from = allowance[_from][msg.sender];
        if (allowed_from != type(uint).max) {
            allowance[_from][msg.sender] -= _value;
        }
        return _transfer(_from, _to, _value);
    }

    function mint(address account, uint amount) external returns (bool) {
        require(msg.sender == minter);
        _mint(account, amount);
        return true;
    }
}

{
  "compilerPath": "",
  "experimental": {},
  "optimizer": {
    "enabled": true,
    "mode": "3"
  }
}

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[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_spender","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"minter","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_minter","type":"address"}],"name":"setMinter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

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