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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.27;

import "../interfaces/IPriceOracle.sol";

/**
 * @title HypeOracle
 * @dev Oracle contract for converting USD amounts to HYPE using the Hyperliquid precompile
 */
contract HypeOracle is IPriceOracle {
    address constant PRECOMPILE = 0x0000000000000000000000000000000000000808; // Using 0x808 for spot prices
    uint32 constant PAIR_ID_TESTNET = 1035;
    uint32 constant PAIR_ID = 107;
    uint256 constant SCALE = 1e6; // 10^(8 − szDecimals)  (szDecimals = 2)

    /**
     * @dev Converts a USD amount to HYPE tokens
     * @param usdAmount 18-decimal USD amount (e.g. 1e18 = $1)
     * @return hypeAmount 18-decimal HYPE amount
     */
    function usdToHype(uint256 usdAmount) external view override returns (uint256 hypeAmount) {
        uint64 priceRaw = getRawPrice(); // uint64 spot price × 1e6
        hypeAmount = (usdAmount * SCALE) / priceRaw;
    }

    /**
     * @dev Gets the raw price from the precompile
     * @return price Raw price in the precompile format (scaled by 1e6)
     */
    function getRawPrice() public view override returns (uint64 price) {
        // Use standard abi.encode as used in hypercore-sim
        bytes memory data = abi.encode(PAIR_ID);
        (bool ok, bytes memory ret) = PRECOMPILE.staticcall(data);

        // Check if the call was successful
        require(ok, "SpotPx precompile call failed");

        // Use abi.decode to extract the uint64 value as done in hypercore-sim
        price = abi.decode(ret, (uint64));
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.27;

/**
 * @title IPriceOracle
 * @dev Interface for Hyperliquid price oracle functions
 */
interface IPriceOracle {
    /**
     * @dev Converts a USD amount to HYPE tokens
     * @param usdAmount 18-decimal USD amount (e.g. 1e18 = $1)
     * @return hypeAmount 18-decimal HYPE amount
     */
    function usdToHype(uint256 usdAmount) external view returns (uint256 hypeAmount);

    /**
     * @dev Gets the raw HYPE/USD price from the precompile
     * @return price Raw price in the precompile format (scaled by 1e6)
     */
    function getRawPrice() external view returns (uint64 price);
}

{
  "remappings": [
    "@openzeppelin/=lib/openzeppelin-contracts/",
    "@ens/=lib/ens-contracts/contracts/",
    "forge-std/=lib/forge-std/src/",
    "ens-contracts/=lib/ens-contracts/contracts/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "halmos-cheatcodes/=lib/openzeppelin-contracts/lib/halmos-cheatcodes/src/",
    "hypercore-sim/=lib/hypercore-sim/contracts/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 10000
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "cancun",
  "viaIR": true,
  "libraries": {}
}

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[{"inputs":[],"name":"getRawPrice","outputs":[{"internalType":"uint64","name":"price","type":"uint64"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"usdAmount","type":"uint256"}],"name":"usdToHype","outputs":[{"internalType":"uint256","name":"hypeAmount","type":"uint256"}],"stateMutability":"view","type":"function"}]

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