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August 7, 2024 10:44
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| // SPDX-License-Identifier: GPL-3.0 | |
| pragma solidity ^0.8.9; | |
| import "./Nil.sol"; | |
| contract Minter is NilBase { | |
| struct TokenInfo { | |
| uint256 id; | |
| string name; | |
| address owner; | |
| uint256 totalSupply; | |
| } | |
| bytes pubkey; | |
| mapping(uint256 => TokenInfo) public tokens; | |
| mapping(string => uint256) public namesMap; | |
| receive() external payable {} | |
| constructor(bytes memory _pubkey) { | |
| pubkey = _pubkey; | |
| } | |
| function create(uint256 amount, address owner, string memory name, address sendTo) onlyInternal payable public returns(bool) { | |
| if (owner == address(0)) { | |
| owner = msg.sender; | |
| } | |
| uint256 id = uint256(uint160(owner)); | |
| require(id != 0, "Invalid token id"); | |
| require(tokens[id].owner == address(0), "Token already exists"); | |
| tokens[id] = TokenInfo(id, name, owner, 0); | |
| require(Nil.mintToken(id, amount), "Mint failed"); | |
| tokens[id].totalSupply += amount; | |
| if (bytes(name).length != 0) { | |
| namesMap[name] = id; | |
| } | |
| if (sendTo != address(0)) { | |
| withdrawImpl(id, amount, sendTo); | |
| } | |
| return true; | |
| } | |
| function mint(uint256 id, uint256 amount, address sendTo) onlyInternal payable public { | |
| require(tokens[id].owner != address(0), "Token doesn't exist"); | |
| require(msg.sender == tokens[id].owner, "Not from owner"); | |
| Nil.mintToken(id, amount); | |
| tokens[id].totalSupply += amount; | |
| if (sendTo != address(0)) { | |
| withdrawImpl(id, amount, sendTo); | |
| } | |
| } | |
| function withdraw(uint256 id, uint256 amount, address to) onlyInternal payable public { | |
| require(tokens[id].owner != address(0), "Token doesn't exist"); | |
| require(msg.sender == tokens[id].owner, "Not from owner"); | |
| uint256 balance = Nil.tokensBalance(address(this), id); | |
| require(balance >= amount, "Insufficient balance"); | |
| withdrawImpl(id, amount, to); | |
| } | |
| function withdrawImpl(uint256 id, uint256 amount, address to) onlyInternal internal { | |
| Nil.Token[] memory tokens_ = new Nil.Token[](1); | |
| tokens_[0] = Nil.Token(id, amount); | |
| if (Nil.getShardId(to) == Nil.getShardId(address(this))) { | |
| Nil.syncCall(to, gasleft(), 0, tokens_, ""); | |
| } else { | |
| Nil.asyncCall(to, address(0), address(0), 0, Nil.FORWARD_REMAINING, false, 0, tokens_, ""); | |
| } | |
| } | |
| // getName returns token name by its id. | |
| function getName(uint256 id) public view returns(string memory) { | |
| require(tokens[id].owner != address(0), "Token does not exist"); | |
| return tokens[id].name; | |
| } | |
| // getIdByName returns token id by its name. If token with such name does not exist, returns 0. | |
| function getIdByName(string memory name) public view returns(uint256) { | |
| return namesMap[name]; | |
| } | |
| function verifyExternal(uint256 hash, bytes memory signature) external view returns (bool) { | |
| return Nil.validateSignature(pubkey, hash, signature); | |
| } | |
| } |
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