79 lines
2.5 KiB
Solidity
79 lines
2.5 KiB
Solidity
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// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.19;
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import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
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import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
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/**
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* @notice Batch ERC-20 drops for EI matrix mainnet top-ups (cWUSDT / cWUSDC).
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* @dev Multicall3 transferFrom is not viable on mainnet cW* (allowance does not persist for MC3).
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* Operator prefunds this contract, then calls dropPrefunded() — ~100 recipients per tx.
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* msg.sender must be owner (deployer EOA).
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*/
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contract EiMatrixMainnetBatchDrop {
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using SafeERC20 for IERC20;
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address public immutable owner;
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event BatchDrop(address indexed token, address indexed operator, uint256 recipientCount, uint256 totalAmount);
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constructor() {
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owner = msg.sender;
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}
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modifier onlyOwner() {
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require(msg.sender == owner, "EiMatrixBatchDrop: not owner");
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_;
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}
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/// @dev Transfer `amounts[i]` from this contract's token balance to `recipients[i]`.
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function dropPrefunded(
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address token,
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address[] calldata recipients,
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uint256[] calldata amounts
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) external onlyOwner {
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uint256 n = recipients.length;
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require(n == amounts.length, "EiMatrixBatchDrop: length mismatch");
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uint256 total;
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for (uint256 i; i < n; ) {
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uint256 amount = amounts[i];
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total += amount;
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IERC20(token).safeTransfer(recipients[i], amount);
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unchecked {
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++i;
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}
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}
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emit BatchDrop(token, msg.sender, n, total);
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}
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/// @dev Pull total from owner via transferFrom then distribute (one tx if allowance to this contract works).
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function pullAndDrop(
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address token,
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address[] calldata recipients,
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uint256[] calldata amounts
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) external onlyOwner {
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uint256 n = recipients.length;
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require(n == amounts.length, "EiMatrixBatchDrop: length mismatch");
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uint256 total;
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for (uint256 i; i < n; ) {
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total += amounts[i];
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unchecked {
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++i;
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}
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}
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IERC20(token).safeTransferFrom(owner, address(this), total);
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for (uint256 i; i < n; ) {
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IERC20(token).safeTransfer(recipients[i], amounts[i]);
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unchecked {
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++i;
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}
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}
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emit BatchDrop(token, msg.sender, n, total);
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}
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/// @dev Recover stray tokens (operator only).
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function sweep(address token, address to, uint256 amount) external onlyOwner {
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IERC20(token).safeTransfer(to, amount);
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}
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}
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