Fetcher.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;

import "@chainlink/contracts/src/v0.8/ChainlinkClient.sol";
import "@chainlink/contracts/src/v0.8/shared/access/ConfirmedOwner.sol";

/**
 * Request testnet LINK and ETH here: https://faucets.chain.link/
 * Find information on LINK Token Contracts and get the latest ETH and LINK faucets here: https://docs.chain.link/docs/link-token-contracts/
 */

/**
 * THIS IS AN EXAMPLE CONTRACT THAT USES HARDCODED VALUES FOR CLARITY.
 * THIS IS AN EXAMPLE CONTRACT THAT USES UN-AUDITED CODE.
 * DO NOT USE THIS CODE IN PRODUCTION.
 */

contract FetchFromArray is ChainlinkClient, ConfirmedOwner {
    using Chainlink for Chainlink.Request;

    string public id;

    bytes32 private jobId;
    uint256 private fee;

    event RequestFirstId(bytes32 indexed requestId, string id);

    /**
     * @notice Initialize the link token and target oracle
     *
     * Sepolia Testnet details:
     * Link Token: 0x779877A7B0D9E8603169DdbD7836e478b4624789
     * Oracle: 0x6090149792dAAeE9D1D568c9f9a6F6B46AA29eFD (Chainlink DevRel)
     * jobId: 7d80a6386ef543a3abb52817f6707e3b
     *
     */
    constructor() ConfirmedOwner(msg.sender) {
        setChainlinkToken(0x779877A7B0D9E8603169DdbD7836e478b4624789);
        setChainlinkOracle(0x6090149792dAAeE9D1D568c9f9a6F6B46AA29eFD);
        jobId = "7d80a6386ef543a3abb52817f6707e3b";
        fee = (1 * LINK_DIVISIBILITY) / 10; // 0,1 * 10**18 (Varies by network and job)
    }

    /**
     * Create a Chainlink request to retrieve API response, find the target
     * data which is located in a list
     */
    function requestFirstId() public returns (bytes32 requestId) {
        Chainlink.Request memory req = buildChainlinkRequest(
            jobId,
            address(this),
            this.fulfill.selector
        );

        // Set the URL to perform the GET request on
        // API docs: https://www.coingecko.com/en/api/documentation?
        req.add(
            "get",
            "https://face-guardian.onrender.com/api/id"
        );

        // Set the path to find the desired data in the API response, where the response format is:
        // [{
        //  "id": "bitcoin",
        //  "symbol": btc",
        // ...
        // },
        //{
        // ...
        // .. }]
        // request.add("path", "0.id"); // Chainlink nodes prior to 1.0.0 support this format
        req.add("path", "0,Id"); // Chainlink nodes 1.0.0 and later support this format
        // Sends the request
        return sendChainlinkRequest(req, fee);
    }

    /**
     * Receive the response in the form of string
     */
    function fulfill(
        bytes32 _requestId,
        string memory _Id
    ) public recordChainlinkFulfillment(_requestId) {
        emit RequestFirstId(_requestId, _Id);
        id = _Id;
    }

    /**
     * Allow withdraw of Link tokens from the contract
     */
    function withdrawLink() public onlyOwner {
        LinkTokenInterface link = LinkTokenInterface(chainlinkTokenAddress());
        require(
            link.transfer(msg.sender, link.balanceOf(address(this))),
            "Unable to transfer"
        );
    }
}