56 lines
1.4 KiB
Solidity
56 lines
1.4 KiB
Solidity
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// SPDX-License-Identifier: Mozilla Public License 2.0
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pragma solidity ^0.8.17;
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import "@openzeppelin/contracts/access/Ownable.sol";
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import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
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import "@openzeppelin/contracts/utils/Context.sol";
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contract CommunityERC20 is
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Context,
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Ownable,
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ERC20
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{
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/**
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* If we want unlimited total supply we should set maxSupply to 2^256-1.
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*/
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uint256 public maxSupply;
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constructor(
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string memory _name,
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string memory _symbol,
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uint256 _maxSupply
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) ERC20(_name, _symbol) {
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maxSupply = _maxSupply;
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}
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// Events
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// External functions
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function setMaxSupply(uint256 newMaxSupply) external onlyOwner {
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require(newMaxSupply >= totalSupply(), "MAX_SUPPLY_LOWER_THAN_TOTAL_SUPPLY");
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maxSupply = newMaxSupply;
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}
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/**
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* @dev Mint tokens for each address in `addresses` each one with
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* an amount specified in `amounts`.
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*
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*/
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function mintTo(address[] memory addresses, uint256[] memory amounts) external onlyOwner {
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require(addresses.length == amounts.length, "WRONG_LENGTHS");
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for (uint256 i = 0; i < addresses.length; i++) {
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uint256 amount = amounts[i];
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require(totalSupply() + amount <= maxSupply, "MAX_SUPPLY_REACHED");
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_mint(addresses[i], amount);
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}
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}
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// Public functions
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// Internal functions
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// Private functions
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}
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