// File: contracts/LidoCrv.sol



// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.9;

import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";

interface ICurve{ 
    function add_liquidity(uint256[2] calldata amounts,uint256 min_mint_amount) external payable returns(uint256);   

    function lp_token() external view returns(address);

    function calc_token_amount(uint256[2] calldata amounts, bool is_deposit) external view returns(uint256);

}
interface ILido {
    function submit(address _referral) external payable returns(uint256);

    function approve(address _spender, uint256 _amount) external ;
}
interface IERC20 {
    function transfer(address receipient, uint256 amount) external returns(bool);

}

contract LidoCrvStaker is Ownable{
    address constant public lido = 0xae7ab96520DE3A18E5e111B5EaAb095312D7fE84;
    address constant public crv = 0xDC24316b9AE028F1497c275EB9192a3Ea0f67022;
    uint256 slippageCoeficient = 99;

    function setCoeficient(uint256 _slippageCoeficient) external onlyOwner{
        slippageCoeficient = _slippageCoeficient;
    }

    receive() external payable {
        uint256 depositEthAmount =  msg.value / 2;

        uint256 stEthAmount = ILido(lido).submit{value:depositEthAmount}(0x0000000000000000000000000000000000000000);

        uint256 slippage = ICurve(crv).calc_token_amount([depositEthAmount, stEthAmount],true) * slippageCoeficient / 100;

        ILido(lido).approve(crv, type(uint).max);
               
        uint256 depositEthAmountCopy = depositEthAmount;

        uint256 res = ICurve(crv).add_liquidity{value:depositEthAmount}([depositEthAmountCopy, stEthAmount],slippage);
        address lp_token = ICurve(crv).lp_token();

        IERC20(lp_token).transfer(msg.sender, res);
        
    }
}

// File: @openzeppelin/contracts/access/Ownable.sol



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

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: @openzeppelin/contracts/utils/Context.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}