Contract 0x9b8f21a50511b6ffb304190072908a3756a9dc87

/**
 *Submitted for verification at Arbiscan on 2022-05-17
*/

// SPDX-License-Identifier: MIT
pragma solidity =0.8.10;

contract Discount {
    address public owner;
    mapping(address => CustomServiceFee) public serviceFees;

    uint256 constant MAX_SERVICE_FEE = 400;

    error OnlyOwner();
    error WrongFeeValue();

    struct CustomServiceFee {
        bool active;
        uint256 amount;
    }

    constructor() {
        owner = 0x322d58b9E75a6918f7e7849AEe0fF09369977e08;
    }

    function isCustomFeeSet(address _user) public view returns (bool) {
        return serviceFees[_user].active;
    }

    function getCustomServiceFee(address _user) public view returns (uint256) {
        return serviceFees[_user].amount;
    }

    function setServiceFee(address _user, uint256 _fee) public {
        if (msg.sender != owner){
            revert OnlyOwner();
        }

        if (!(_fee >= MAX_SERVICE_FEE || _fee == 0)){
            revert WrongFeeValue();
        }

        serviceFees[_user] = CustomServiceFee({active: true, amount: _fee});
    }

    function disableServiceFee(address _user) public {
        if (msg.sender != owner){
            revert OnlyOwner();
        }

        serviceFees[_user] = CustomServiceFee({active: false, amount: 0});
    }
}

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"OnlyOwner","type":"error"},{"inputs":[],"name":"WrongFeeValue","type":"error"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"disableServiceFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"getCustomServiceFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"isCustomFeeSet","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"serviceFees","outputs":[{"internalType":"bool","name":"active","type":"bool"},{"internalType":"uint256","name":"amount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"},{"internalType":"uint256","name":"_fee","type":"uint256"}],"name":"setServiceFee","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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