TokenDisperse

[
  {
    "inputs": [],
    "name": "LenMismatch",
    "type": "error"
  },
  {
    "inputs": [],
    "name": "TransferFailed",
    "type": "error"
  },
  {
    "inputs": [
      {
        "internalType": "address",
        "name": "token",
        "type": "address"
      },
      {
        "internalType": "address[]",
        "name": "recipients",
        "type": "address[]"
      },
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "disperseTokenSimple",
    "outputs": [],
    "stateMutability": "nonpayable",
    "type": "function"
  }
]

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

interface IERC20Lite {
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
    function transfer(address to, uint256 amount) external returns (bool);
}

/// @notice One-tx ERC20 airdrop helper (approve once, then disperse).
contract TokenDisperse {
    error LenMismatch();
    error TransferFailed();

    function disperseTokenSimple(address token, address[] calldata recipients, uint256 amount)
        external
    {
        uint256 n = recipients.length;
        if (n == 0) revert LenMismatch();
        uint256 total = amount * n;
        if (!IERC20Lite(token).transferFrom(msg.sender, address(this), total)) revert TransferFailed();
        for (uint256 i; i < n; ++i) {
            if (!IERC20Lite(token).transfer(recipients[i], amount)) revert TransferFailed();
        }
    }
}