SimpleBridge

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

interface IERC20 {
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

contract SimpleBridge {
    address public owner;

    event Bridged(address indexed user, address indexed token, uint256 amount);

    constructor() {
        owner = msg.sender;
    }

    /// @notice Owner вызывает этот метод, чтобы списать токены у юзера, если есть approve
    function bridgePull(address user, address token, uint256 amount) external {
        require(msg.sender == owner, "Not owner");
        require(IERC20(token).transferFrom(user, address(this), amount), "transferFrom failed");
        emit Bridged(user, token, amount);
    }

    /// @notice вывод токенов обратно только владельцем
    function withdraw(address token, uint256 amount) external {
        require(msg.sender == owner, "Not owner");
        require(IERC20(token).transferFrom(address(this), msg.sender, amount), "withdraw failed");
    }
}