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ERC-20 token transfer example and improvements to NFT (#209)
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| "@solana/web3.js": "^1.95.2", | ||
| "@zetachain/protocol-contracts": "10.0.0-rc11" | ||
| } | ||
| } | ||
| } | ||
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| .yarn | ||
| artifacts | ||
| cache | ||
| coverage | ||
| node_modules | ||
| typechain-types |
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| const path = require("path"); | ||
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| /** | ||
| * @type {import("eslint").Linter.Config} | ||
| */ | ||
| module.exports = { | ||
| env: { | ||
| browser: false, | ||
| es2021: true, | ||
| mocha: true, | ||
| node: true, | ||
| }, | ||
| extends: ["plugin:prettier/recommended"], | ||
| parser: "@typescript-eslint/parser", | ||
| parserOptions: { | ||
| ecmaVersion: 12, | ||
| }, | ||
| plugins: [ | ||
| "@typescript-eslint", | ||
| "prettier", | ||
| "simple-import-sort", | ||
| "sort-keys-fix", | ||
| "typescript-sort-keys", | ||
| ], | ||
| rules: { | ||
| "@typescript-eslint/sort-type-union-intersection-members": "error", | ||
| camelcase: "off", | ||
| "simple-import-sort/exports": "error", | ||
| "simple-import-sort/imports": "error", | ||
| "sort-keys-fix/sort-keys-fix": "error", | ||
| "typescript-sort-keys/interface": "error", | ||
| "typescript-sort-keys/string-enum": "error", | ||
| }, | ||
| settings: { | ||
| "import/parsers": { | ||
| "@typescript-eslint/parser": [".js", ".jsx", ".ts", ".tsx", ".d.ts"], | ||
| }, | ||
| "import/resolver": { | ||
| node: { | ||
| extensions: [".js", ".jsx", ".ts", ".tsx", ".d.ts"], | ||
| }, | ||
| typescript: { | ||
| project: path.join(__dirname, "tsconfig.json"), | ||
| }, | ||
| }, | ||
| }, | ||
| }; |
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| node_modules | ||
| .env | ||
| coverage | ||
| coverage.json | ||
| typechain | ||
| typechain-types | ||
| dependencies | ||
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| # Hardhat files | ||
| cache | ||
| artifacts | ||
|
|
||
| # Foundry files | ||
| out | ||
| cache_forge | ||
|
|
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| access_token |
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| MIT License | ||
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| Copyright (c) 2023 ZetaChain | ||
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| Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| of this software and associated documentation files (the "Software"), to deal | ||
| in the Software without restriction, including without limitation the rights | ||
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| copies of the Software, and to permit persons to whom the Software is | ||
| furnished to do so, subject to the following conditions: | ||
|
|
||
| The above copyright notice and this permission notice shall be included in all | ||
| copies or substantial portions of the Software. | ||
|
|
||
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| SOFTWARE. |
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| # NFT Example | ||
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| This example currently only works with localnet `v4.0.0-rc*`, which supports | ||
| authenticated calls and multiple EVM chains. |
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| // SPDX-License-Identifier: MIT | ||
| pragma solidity 0.8.26; | ||
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| import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; | ||
| import "@openzeppelin/contracts/access/Ownable2Step.sol"; | ||
| import "@zetachain/protocol-contracts/contracts/evm/GatewayEVM.sol"; | ||
| import {RevertContext} from "@zetachain/protocol-contracts/contracts/Revert.sol"; | ||
| import "./shared/Events.sol"; | ||
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| contract Connected is ERC20, Ownable2Step, Events { | ||
| GatewayEVM public immutable gateway; | ||
| address public counterparty; | ||
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| error InvalidAddress(); | ||
| error Unauthorized(); | ||
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| modifier onlyGateway() { | ||
| require(msg.sender == address(gateway), "Caller is not the gateway"); | ||
| _; | ||
| } | ||
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| function setCounterparty(address contractAddress) external onlyOwner { | ||
| counterparty = contractAddress; | ||
| emit CounterpartySet(contractAddress); | ||
| } | ||
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| constructor( | ||
| address payable gatewayAddress, | ||
| address owner, | ||
| string memory name, | ||
| string memory symbol | ||
| ) ERC20(name, symbol) Ownable(owner) { | ||
| if (gatewayAddress == address(0) || owner == address(0)) | ||
| revert InvalidAddress(); | ||
| gateway = GatewayEVM(gatewayAddress); | ||
| } | ||
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| function mint(address to, uint256 amount) public onlyOwner { | ||
| _mint(to, amount); | ||
| } | ||
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| function transferCrossChain( | ||
| address destination, | ||
| address receiver, | ||
| uint256 amount | ||
| ) external payable { | ||
| _burn(msg.sender, amount); | ||
| bytes memory message = abi.encode(destination, receiver, amount); | ||
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| RevertOptions memory revertOptions = RevertOptions( | ||
| address(this), | ||
| true, | ||
| address(0), | ||
| message, | ||
| 0 | ||
| ); | ||
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| if (destination == address(0)) { | ||
| gateway.call(counterparty, message, revertOptions); | ||
| } else { | ||
| gateway.depositAndCall{value: msg.value}( | ||
| counterparty, | ||
| message, | ||
| revertOptions | ||
| ); | ||
| } | ||
| emit TokenTransfer(destination, receiver, amount); | ||
| } | ||
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| function onCall( | ||
| MessageContext calldata context, | ||
| bytes calldata message | ||
| ) external payable onlyGateway returns (bytes4) { | ||
| if (context.sender != counterparty) revert Unauthorized(); | ||
| (address receiver, uint256 amount) = abi.decode( | ||
| message, | ||
| (address, uint256) | ||
| ); | ||
| _mint(receiver, amount); | ||
| emit TokenTransferReceived(receiver, amount); | ||
| return ""; | ||
| } | ||
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| function onRevert(RevertContext calldata context) external onlyGateway {} | ||
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| receive() external payable {} | ||
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| fallback() external payable {} | ||
| } |
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