Contract Source Code (Solidity Standard Json-Input format)

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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

contract CustomFeeTransaction {
    address public owner;
    mapping(address => uint256) public collectedFees;
    
    event TransactionSent(address indexed from, address indexed to, uint256 amount, uint256 fee);
    event FeeWithdrawn(address indexed recipient, uint256 amount);

    constructor() {
        owner = msg.sender;
    }

    modifier onlyOwner() {
        require(msg.sender == owner, "Not the contract owner");
        _;
    }

    // Function to send a transaction with a custom fee
    function sendTransactionWithFee(address payable _to) external payable {
        require(msg.value > 0, "Amount must be greater than 0");
        
        // Calculate fee (e.g., 1% of transaction value)
        uint256 fee = (msg.value * 1) / 100;
        uint256 transferAmount = msg.value - fee;
        
        // Store collected fee
        collectedFees[msg.sender] += fee;
        
        // Transfer the remaining amount to recipient
        (bool success, ) = _to.call{value: transferAmount}("");
        require(success, "Transfer failed");
        
        emit TransactionSent(msg.sender, _to, transferAmount, fee);
    }
    
    // Function to withdraw collected fees
    function withdrawFees() external {
        uint256 amount = collectedFees[msg.sender];
        require(amount > 0, "No fees to withdraw");
        
        collectedFees[msg.sender] = 0;
        
        (bool success, ) = payable(msg.sender).call{value: amount}("");
        require(success, "Withdrawal failed");
        
        emit FeeWithdrawn(msg.sender, amount);
    }
    
    // Function to get collected fees for an address
    function getCollectedFees(address _address) external view returns (uint256) {
        return collectedFees[_address];
    }
}

{
  "evmVersion": "paris",
  "optimizer": {
    "enabled": true,
    "mode": "3"
  },
  "outputSelection": {
    "*": {
      "*": [
        "abi",
        "metadata"
      ],
      "": [
        "ast"
      ]
    }
  },
  "detectMissingLibraries": false,
  "forceEVMLA": false,
  "enableEraVMExtensions": false,
  "libraries": {}
}

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"FeeWithdrawn","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"fee","type":"uint256"}],"name":"TransactionSent","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"collectedFees","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"getCollectedFees","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address payable","name":"_to","type":"address"}],"name":"sendTransactionWithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"withdrawFees","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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