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// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;

import "./interfaces/IProxy.sol";

contract Api3AggregatorAdaptor {  
    // Updating the proxy address is a security-critical action which is why
    // we have made it immutable.
    address public immutable proxy;

    constructor(address _proxy) {
        proxy = _proxy;
    }

    function latestAnswer() external view returns (int256 value) {
        (int256 rawValue, ) = readDataFeed();
        value = rawValue / 1e10;
    }

    function latestTimestamp() external view returns (uint256 timestamp) {
        ( , timestamp) = readDataFeed();
    }

    function decimals() external view returns (uint8) {
        return 8;
    }

    function readDataFeed()
        internal
        view
        returns (int224 value, uint256 timestamp)
    {
        (value, timestamp) = IProxy(proxy).read();

        // If you have any assumptions about `value` and `timestamp`, make sure
        // to validate them right after reading from the proxy. For example,
        // if the value you are reading is the spot price of an asset, you may
        // want to reject non-positive values...
        // require(value > 0, "Value not positive");
        // ...and 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"
        // );
        // Try to be strict about validations, but be wary of:
        // (1) Overly strict validation that may invalidate valid values
        // (2) Mutable validation parameters that are controlled by a trusted
        // party (eliminates the trust-minimization guarantees of first-party
        // oracles)
        // (3) Validation parameters that need to be tuned according to
        // external conditions (if these are forgotten to be handled, it will
        // result in (1), look up the Venus Protocol exploit related to LUNA)

        // After validation, you can implement your contract logic here.
    }       

    function getTokenType() external pure returns (uint256) {
        return 1;
    }    
}

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

/// @dev See DapiProxy.sol for comments about usage
interface IProxy {
    function read() external view returns (int224 value, uint32 timestamp);

    function api3ServerV1() external view returns (address);
}

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

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[{"inputs":[{"internalType":"address","name":"_proxy","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getTokenType","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"latestAnswer","outputs":[{"internalType":"int256","name":"value","type":"int256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestTimestamp","outputs":[{"internalType":"uint256","name":"timestamp","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"proxy","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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

000000000000000000000000b8f66692a0ead7403b77d4e74d7a27789577a199

-----Decoded View---------------
Arg [0] : _proxy (address): 0xB8f66692a0EaD7403B77d4e74d7a27789577a199

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000b8f66692a0ead7403b77d4e74d7a27789577a199