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// This contract is part of Zellic’s smart contract dataset, which is a collection of publicly available contract code gathered as of March 2023.
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;
import "./Ownable.sol";
contract Whitelist is Ownable {
mapping(address => bool) private whitelist;
mapping(address => uint) private addressIdx;
address[] private whiteArr;
event WhitelistedAddressAdded(address addr);
event WhitelistedAddressRemoved(address addr);
constructor() {
addAddressToWhitelist(msg.sender);
}
modifier onlyWhitelisted() {
require(whitelist[msg.sender], "sender have to whitelisted");
_;
}
function isWhitelist(address addr) public view returns (bool success) {
return whitelist[addr];
}
function addAddressToWhitelist(address addr) onlyOwner public returns (bool success) {
if (!whitelist[addr]) {
whitelist[addr] = true;
addressIdx[addr] = whiteArr.length;
whiteArr.push(addr);
emit WhitelistedAddressAdded(addr);
success = true;
}
}
function removeAddressFromWhitelist(address addr) onlyOwner external returns (bool success) {
if (whitelist[addr]) {
whitelist[addr] = false;
uint deleteIdx = addressIdx[addr];
address lastAddr = whiteArr[whiteArr.length - 1];
addressIdx[lastAddr] = deleteIdx;
delete addressIdx[addr];
whiteArr[deleteIdx] = lastAddr;
whiteArr.pop();
emit WhitelistedAddressRemoved(addr);
success = true;
}
}
function getCountWhiteArr() public onlyOwner view returns (uint count) {
count = whiteArr.length;
}
function getWhiteArrByIdx(uint idx) public onlyOwner view returns (address whiteAddress) {
whiteAddress = whiteArr[idx];
}
function getWhiteArr() public onlyOwner view returns (address[] memory whiteArray) {
whiteArray = whiteArr;
}
}
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