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qourier-module-v0-sum-of-numbers

v0.0.2

Published

Sums up all numbers passed as parameters to the function (max 5).

Downloads

1

Readme

Sum Of Numbers

Sums up all numbers passed as parameters to the function (max 5).

Use by Developers

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import "@qourier/contracts/Hub.sol";

contract SumOfNumbers {
    address public hub;
    uint256 public price;

    uint256 private id;
    uint256 private result;

    constructor(address hub_, uint256 price_) {
        hub = hub_;
        price = price_;
    }

    function createTask(string memory one_, string memory two_) public payable {
        Hub(hub).createTask2{ value: price }(
            bytes32("sum-of-numbers"),
            [bytes(one_), bytes(two_)]
        );
    }

    function completeTask(uint256 id_, bytes memory result_) external {
        require(msg.sender == hub, "Only Qourier can change the state.");
        id = id_;
        result = bytesToUint(result_);
    }

    function getTask() public view returns(uint256, uint256) {
        return (id, result);
    }

    function bytesToUint(bytes memory b) public pure returns (uint256) {
        uint256 res = 0;
        for (uint256 i = 0; i < b.length; i++) {
            uint256 c = uint256(uint8(b[i]));
            if (c >= 48 && c <= 57) {
                res = res * 10 + (c - 48);
            }
        }
        return res;
    }
}