Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT

pragma solidity 0.8.10;

import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";

contract SpotOracle {
    mapping(uint256 => uint256) public settlePrices;
    AggregatorV3Interface immutable internal PRICEFEED;
    uint256 public latestExpiryUpdated = 0;

    event Settled(uint256 expiry, uint256 settlePrice);

    constructor(
        AggregatorV3Interface priceFeed
    ) {
        PRICEFEED = priceFeed;
    }

    // settle price
    function settle() public {
        uint256 expiry = block.timestamp - block.timestamp % 86400 + 28800;
        require(block.timestamp >= expiry, "Oracle: not expired");
        require(settlePrices[expiry] == 0, "Oracle: already settled");

        uint256 currentPrice = uint256(getLatestPrice());
        if (latestExpiryUpdated != 0 && latestExpiryUpdated <= expiry - 86400 * 2) {
            uint256 missedDays = (expiry - latestExpiryUpdated) / 86400;
            uint256 startPrice = settlePrices[latestExpiryUpdated];

            for (uint256 i = 1; i < missedDays; i++) {
                uint256 missedExpiry = latestExpiryUpdated + i * 86400;
                uint256 missedDayPrice;
                if (startPrice > currentPrice) {
                    missedDayPrice = startPrice - (startPrice - currentPrice) * i / missedDays;
                } else {
                    missedDayPrice = startPrice + (currentPrice - startPrice) * i / missedDays;
                }
                settlePrices[missedExpiry] = missedDayPrice;
                emit Settled(missedExpiry, missedDayPrice);
            }
        }

        settlePrices[expiry] = currentPrice;
        latestExpiryUpdated = expiry;

        emit Settled(expiry, currentPrice);
    }

    function getLatestPrice() internal view returns (int) {
        // prettier-ignore
        (
            /* uint80 roundID */,
            int price,
            /*uint startedAt*/,
            /*uint timeStamp*/,
            /*uint80 answeredInRound*/
        ) = PRICEFEED.latestRoundData();
        require(price > 0, "Oracle: invalid price");

        return price;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface AggregatorV3Interface {
  function decimals() external view returns (uint8);

  function description() external view returns (string memory);

  function version() external view returns (uint256);

  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": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract AggregatorV3Interface","name":"priceFeed","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"expiry","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"settlePrice","type":"uint256"}],"name":"Settled","type":"event"},{"inputs":[],"name":"latestExpiryUpdated","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"settle","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"settlePrices","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]

0x608060405234801561001057600080fd5b50600436106100415760003560e01c806311da60b4146100465780636f31322314610050578063f0ea68aa1461006b575b600080fd5b61004e61008b565b005b61005960015481565b60405190815260200160405180910390f35b6100596100793660046103da565b60006020819052908152604090205481565b600061009a6201518042610409565b6100a49042610433565b6100b09061708061044a565b9050804210156100fd5760405162461bcd60e51b815260206004820152601360248201527213dc9858db194e881b9bdd08195e1c1a5c9959606a1b60448201526064015b60405180910390fd5b600081815260208190526040902054156101595760405162461bcd60e51b815260206004820152601760248201527f4f7261636c653a20616c726561647920736574746c656400000000000000000060448201526064016100f4565b6000610163610302565b905060015460001415801561018657506101806202a30083610433565b60015411155b156102b0576000620151806001548461019f9190610433565b6101a99190610462565b600180546000908152602081905260409020549192505b828110156102ac5760006101d78262015180610476565b6001546101e4919061044a565b90506000858411156102215784836101fc8887610433565b6102069190610476565b6102109190610462565b61021a9085610433565b905061024e565b848361022d8689610433565b6102379190610476565b6102419190610462565b61024b908561044a565b90505b6000828152602081815260409182902083905581518481529081018390527ff5b268a3ff315cc44ccceeef86259c9e8eef81ceecb14001543809115380dd62910160405180910390a1505080806102a490610495565b9150506101c0565b5050505b60008281526020818152604091829020839055600184905581518481529081018390527ff5b268a3ff315cc44ccceeef86259c9e8eef81ceecb14001543809115380dd62910160405180910390a15050565b6000807f0000000000000000000000005f4ec3df9cbd43714fe2740f5e3616155c5b84196001600160a01b031663feaf968c6040518163ffffffff1660e01b815260040160a060405180830381865afa158015610363573d6000803e3d6000fd5b505050506040513d601f19601f8201168201806040525081019061038791906104ca565b505050915050600081136103d55760405162461bcd60e51b81526020600482015260156024820152744f7261636c653a20696e76616c696420707269636560581b60448201526064016100f4565b919050565b6000602082840312156103ec57600080fd5b5035919050565b634e487b7160e01b600052601260045260246000fd5b600082610418576104186103f3565b500690565b634e487b7160e01b600052601160045260246000fd5b6000828210156104455761044561041d565b500390565b6000821982111561045d5761045d61041d565b500190565b600082610471576104716103f3565b500490565b60008160001904831182151516156104905761049061041d565b500290565b60006000198214156104a9576104a961041d565b5060010190565b805169ffffffffffffffffffff811681146103d557600080fd5b600080600080600060a086880312156104e257600080fd5b6104eb866104b0565b945060208601519350604086015192506060860151915061050e608087016104b0565b9050929550929590935056fea2646970667358221220deb63b9a6d452d0003e208ee5a7d2541f7fd5794bb0d308185d0c66644c6ae2d64736f6c634300080a0033