//SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;
/*
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┌┼┐╔═╗╦ ╦╔═╗╔═╗╔═╗
└┼┐║ ╠═╣╠═╣║ ║╚═╗
└┼┘╚═╝╩ ╩╩ ╩╚═╝╚═╝
*/
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
contract ChaosGemsClaim {
address public owner;
IERC20 public token;
mapping(address => uint256) public whitelist;
constructor(IERC20 _tokenAddress) {
owner = msg.sender;
token = IERC20(_tokenAddress);
}
modifier onlyOwner() {
require(msg.sender == owner, "Not owner");
_;
}
// Function to add addresses to the whitelist
function addToWhitelist(
address[] calldata addresses,
uint256[] calldata amounts
) external onlyOwner {
require(
addresses.length == amounts.length,
"Array lengths do not match"
);
for (uint256 i = 0; i < addresses.length; i++) {
whitelist[addresses[i]] = amounts[i];
}
}
// Function to claim tokens
function claimTokens() external {
uint256 amount = whitelist[msg.sender];
require(amount > 0, "Not on whitelist or no tokens to claim");
require(
token.balanceOf(address(this)) >= amount,
"Insufficient tokens in contract"
);
whitelist[msg.sender] = 0;
require(token.transfer(msg.sender, amount), "Transfer failed");
}
// Function to recover any ERC20 tokens sent to the contract by mistake
function recoverERC20() external onlyOwner {
token.transfer(owner, token.balanceOf(address(this)));
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.20;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the value of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the value of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves a `value` amount of tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 value) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets a `value` amount of tokens as the allowance of `spender` over the
* caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 value) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from `from` to `to` using the
* allowance mechanism. `value` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 value) external returns (bool);
}
{
"compilationTarget": {
"contracts/ChaosGemsClaim.sol": "ChaosGemsClaim"
},
"evmVersion": "paris",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": true,
"runs": 200
},
"remappings": []
}
[{"inputs":[{"internalType":"contract IERC20","name":"_tokenAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address[]","name":"addresses","type":"address[]"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"}],"name":"addToWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"claimTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"recoverERC20","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"whitelist","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]