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// SPDX-License-Identifier: MIT
pragma solidity 0.8.21;

import {IStoneVault} from "../interfaces/IStoneVault.sol";
import {IStone} from "../interfaces/IStone.sol";

import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol";

contract DepositBridge is ReentrancyGuard {
    address public immutable stone;
    address payable public immutable vault;

    uint16 public immutable dstChainId;

    event BridgeTo(
        address indexed srcAddr,
        bytes dstAddr,
        uint256 etherAmount,
        uint256 stoneAmount,
        uint256 gasPaid
    );

    constructor(address _stone, address payable _vault, uint16 _dstChainId) {
        stone = _stone;
        vault = _vault;

        dstChainId = _dstChainId;
    }

    function bridgeTo(
        uint256 _amount,
        bytes calldata _dstAddress,
        uint256 _gasPaidForCrossChain
    ) public payable returns (uint256 stoneMinted) {
        stoneMinted = bridge(
            msg.sender,
            _amount,
            _dstAddress,
            _gasPaidForCrossChain
        );
    }

    function bridge(
        address _srcAddr,
        uint256 _amount,
        bytes calldata _dstAddress,
        uint256 _gasPaidForCrossChain
    ) public payable nonReentrant returns (uint256 stoneMinted) {
        require(msg.value >= _amount + _gasPaidForCrossChain, "wrong amount");

        IStoneVault stoneVault = IStoneVault(vault);
        stoneMinted = stoneVault.deposit{value: _amount}();

        IStone stoneToken = IStone(stone);
        stoneToken.sendFrom{value: _gasPaidForCrossChain}(
            address(this),
            dstChainId,
            _dstAddress,
            stoneMinted,
            payable(_srcAddr),
            address(0),
            bytes("")
        );

        emit BridgeTo(
            _srcAddr,
            _dstAddress,
            _amount,
            stoneMinted,
            _gasPaidForCrossChain
        );
    }

    function estimateSendFee(
        uint256 _amount,
        bytes calldata _dstAddress
    ) public view returns (uint nativeFee, uint zroFee) {
        return
            IStone(stone).estimateSendFee(
                dstChainId,
                _dstAddress,
                _amount,
                false,
                bytes("")
            );
    }

    receive() external payable {
        bytes memory dstAddr = abi.encodePacked(msg.sender);

        (uint nativeFee, ) = this.estimateSendFee(msg.value, dstAddr);

        require(msg.value > nativeFee, "too little");

        uint256 amount = msg.value - nativeFee;

        this.bridge{value: msg.value}(msg.sender, amount, dstAddr, nativeFee);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.21;

interface IStoneVault {
    function deposit() external payable returns (uint256 mintAmount);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.21;

interface IStone {
    function sendFrom(
        address _from,
        uint16 _dstChainId,
        bytes calldata _toAddress,
        uint _amount,
        address payable _refundAddress,
        address _zroPaymentAddress,
        bytes calldata _adapterParams
    ) external payable;

    function estimateSendFee(
        uint16 _dstChainId,
        bytes calldata _toAddress,
        uint _amount,
        bool _useZro,
        bytes calldata _adapterParams
    ) external view returns (uint nativeFee, uint zroFee);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }
}

{
  "remappings": [],
  "optimizer": {
    "enabled": true,
    "runs": 10
  },
  "evmVersion": "shanghai",
  "libraries": {},
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_stone","type":"address"},{"internalType":"address payable","name":"_vault","type":"address"},{"internalType":"uint16","name":"_dstChainId","type":"uint16"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"srcAddr","type":"address"},{"indexed":false,"internalType":"bytes","name":"dstAddr","type":"bytes"},{"indexed":false,"internalType":"uint256","name":"etherAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"stoneAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"gasPaid","type":"uint256"}],"name":"BridgeTo","type":"event"},{"inputs":[{"internalType":"address","name":"_srcAddr","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bytes","name":"_dstAddress","type":"bytes"},{"internalType":"uint256","name":"_gasPaidForCrossChain","type":"uint256"}],"name":"bridge","outputs":[{"internalType":"uint256","name":"stoneMinted","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bytes","name":"_dstAddress","type":"bytes"},{"internalType":"uint256","name":"_gasPaidForCrossChain","type":"uint256"}],"name":"bridgeTo","outputs":[{"internalType":"uint256","name":"stoneMinted","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"dstChainId","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bytes","name":"_dstAddress","type":"bytes"}],"name":"estimateSendFee","outputs":[{"internalType":"uint256","name":"nativeFee","type":"uint256"},{"internalType":"uint256","name":"zroFee","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"stone","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"vault","outputs":[{"internalType":"address payable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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0000000000000000000000007122985656e38bdc0302db86685bb972b145bd3c000000000000000000000000a62f9c5af106feee069f38de51098d9d81b9057200000000000000000000000000000000000000000000000000000000000000d9

-----Decoded View---------------
Arg [0] : _stone (address): 0x7122985656e38BDC0302Db86685bb972b145bD3C
Arg [1] : _vault (address): 0xA62F9C5af106FeEE069F38dE51098D9d81B90572
Arg [2] : _dstChainId (uint16): 217

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 0000000000000000000000007122985656e38bdc0302db86685bb972b145bd3c
Arg [1] : 000000000000000000000000a62f9c5af106feee069f38de51098d9d81b90572
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000d9