Betterman.sol

pragma solidity 0.4.24;

import "https://github.com/smartcontractkit/chainlink/evm/contracts/ChainlinkClient.sol";

contract Betterman is ChainlinkClient {
    
    uint256 private ORACLE_PAYMENT = 1 * LINK;
    uint256 public currentTemp;
    
    constructor() public {
        setPublicChainlinkToken();
    }

    function requestTemperature(address _oracle, string memory _jobId, string memory _appId) public {
        Chainlink.Request memory req = buildChainlinkRequest(stringToBytes32(_jobId), address(this), this.fulfillTemperature.selector);
        req.add("get", concat2("https://openweathermap.org/data/2.5/weather?id=2177091&appid=", _appId));
        req.add("path", "main.temp");
        req.addInt("times", 100);
        sendChainlinkRequestTo(_oracle, req, ORACLE_PAYMENT);
    }

    function fulfillTemperature(bytes32 _requestId, uint256 _temp) public recordChainlinkFulfillment(_requestId) {
        currentTemp = _temp;
    }
    
    function concat2(string memory _s1, string memory _s2) private pure returns (string) {
        return string(abi.encodePacked(_s1, _s2));
    }
    
    function stringToBytes32(string memory source) private pure returns (bytes32 result) {
        bytes memory tempEmptyStringTest = bytes(source);
        if (tempEmptyStringTest.length == 0) {
            return 0x0;
        }
    
        assembly {
            result := mload(add(source, 32))
        }
    }
}