Only imports and main functions

Api3Options.sol

pragma solidity ^0.8.17;

import "@api3/contracts/v0.8/interfaces/IProxy.sol";

contract Api3Options {
    //Pricefeed proxies
    address public ethProxy;
    address public linkProxy;
    uint ethPrice;
    uint linkPrice;
    //Precomputing hash of strings
    bytes32 ethHash = keccak256(abi.encodePacked("ETH"));
    bytes32 linkHash = keccak256(abi.encodePacked("LINK"));
    address payable contractAddr;
    
    //Options stored in arrays of structs
    struct option {
        uint strike; //Price in USD (18 decimal places) option allows buyer to purchase tokens at
        uint premium; //Fee in contract token that option writer charges
        uint expiry; //Unix timestamp of expiration time
        uint amount; //Amount of tokens the option contract is for
        bool exercised; //Has option been exercised
        bool canceled; //Has option been canceled
        uint id; //Unique ID of option, also array index
        uint latestCost; //Helper to show last updated cost to exercise
        address payable writer; //Issuer of option
        address payable buyer; //Buyer of option
    }
    option[] public ethOpts;
    option[] public linkOpts;

    //Kovan feeds: https://docs.chain.link/docs/reference-contracts
    constructor(address _ethProxy, address _linkProxy) public {
        //ETH/USD Proxy on Goerli
        ethProxy = _ethProxy
        //LINK/USD Proxy on Goerli
        linkProxy = _linkProxy
        contractAddr = payable(address(this));
    }

    //Returns the latest ETH price
    function getEthPrice() public view returns (uint) {
        (int224 value,uint32 timestamp) = IProxy(ethProxy).read();
        // if the data feed is being updated with a one day-heartbeat
        // interval, you may want to check for that.
        require(
            timestamp + 1 days > block.timestamp,
            "Timestamp older than one day"
        );
        //Price should never be negative thus cast int to unit is ok
        //Price is 18 decimal places
        return uint(uint224(value));
    }
    
    //Returns the latest LINK price
    function getLinkPrice() public view returns (uint) {
        (int224 value,uint32 timestamp) = IProxy(linkProxy).read();
        // if the data feed is being updated with a one day-heartbeat
        // interval, you may want to check for that.
        require(
            timestamp + 1 days > block.timestamp,
            "Timestamp older than one day"
        );
        //Price should never be negative thus cast int to unit is ok
        //Price is 18 decimal places
        return uint(uint224(value));
    }
    
    //Updates prices to latest
    function updatePrices() internal {
        ethPrice = getEthPrice();
        linkPrice = getLinkPrice();
    }
    
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}