Contract Source Code (Solidity Standard Json-Input format)

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// SPDX-License-Identifier: MIT

pragma solidity ^0.8.19;

import {IPriceFeed} from "./interfaces/IPriceFeed.sol";

contract PriceFeed is IPriceFeed {
    int256 public answer;
    uint256 public startedAt;
    uint256 public updatedAt;
    uint80 public roundId;
    string public override description = "PriceFeed";
    address public override aggregator;

    uint256 public decimals;
    address public owner;

    mapping(uint80 => int256) public answers;
    mapping(address => bool) public isAdmin;

    modifier onlyOwner() {
        require(msg.sender == owner, "PriceFeed: forbidden");
        _;
    }

    constructor() {
        owner = msg.sender;
        isAdmin[msg.sender] = true;
    }

    function setAdmin(address _account, bool _isAdmin) public onlyOwner {
        isAdmin[_account] = _isAdmin;
    }

    function latestAnswer() public view override returns (int256) {
        return answer;
    }

    function latestRound() public view override returns (uint80) {
        return roundId;
    }

    function setLatestAnswer(int256 _answer) public {
        require(isAdmin[msg.sender], "PriceFeed: forbidden");
        roundId = roundId + 1;
        answer = _answer;
        answers[roundId] = _answer;
        startedAt = block.timestamp;
        updatedAt = block.timestamp;
    }

    // returns roundId, answer, startedAt, updatedAt, answeredInRound
    function getRoundData(uint80 _roundId) public view override returns (uint80, int256, uint256, uint256, uint80) {
        return (_roundId, answers[_roundId], 0, 0, 0);
    }

    // returns roundId, answer, startedAt, updatedAt, answeredInRound
    function latestRoundData() public view override returns (uint80, int256, uint256, uint256, uint80) {
        return (roundId, answers[roundId], startedAt, updatedAt, 0);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.19;

interface IPriceFeed {
    function description() external view returns (string memory);

    function aggregator() external view returns (address);

    function latestAnswer() external view returns (int256);

    function latestRound() external view returns (uint80);

    function getRoundData(uint80 _roundId)
        external
        view
        returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound);

    function latestRoundData()
        external
        view
        returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 10
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"aggregator","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"answer","outputs":[{"internalType":"int256","name":"","type":"int256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint80","name":"","type":"uint80"}],"name":"answers","outputs":[{"internalType":"int256","name":"","type":"int256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"description","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint80","name":"_roundId","type":"uint80"}],"name":"getRoundData","outputs":[{"internalType":"uint80","name":"","type":"uint80"},{"internalType":"int256","name":"","type":"int256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint80","name":"","type":"uint80"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"isAdmin","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestAnswer","outputs":[{"internalType":"int256","name":"","type":"int256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestRound","outputs":[{"internalType":"uint80","name":"","type":"uint80"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestRoundData","outputs":[{"internalType":"uint80","name":"","type":"uint80"},{"internalType":"int256","name":"","type":"int256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint80","name":"","type":"uint80"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"roundId","outputs":[{"internalType":"uint80","name":"","type":"uint80"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"},{"internalType":"bool","name":"_isAdmin","type":"bool"}],"name":"setAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"int256","name":"_answer","type":"int256"}],"name":"setLatestAnswer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startedAt","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"updatedAt","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]

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