mirror of
https://github.com/cake-tech/cake_wallet.git
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CW-551-Refactor-EVM-Chains (#1256)
* feat: Create central package for EVM chains * chore: Cleanup pubspec and add core evm dependencies * feat: Replicated core evm chain files, time to start fixing the issues * feat: Setup evm central package to handle all evm chains * feat: Link up Polygon and Ethereum wallets to the centra evm package, fix bugs and issues, and optimze for better performance * feat: Setup and adjust configs to reflect new evm configurations * Remove unneeded file * fix: Changes done while re-reviewing entire structure and refactor * fix: Add evm chain wallet path to imports in configure file * feat: Adjust implementation of parent class, remove unneeded files, remove windows, linux and mac directories, restructure the evm child classes * fix: Make EVMChainWallet a central abstract class and adjust accordingly * fix: Adjust transaction info, restructure EVMWalletChain to be an abstract, adjust external facing interfaces for polygon and ethereum, adjust configuration for ethereum and polygon in configure file * fix: Testing issues * fix: Add localization for nft tile and details page texts and add dashes for null responses * fix: merge conflicts * Minor fixes for building Monero.com --------- Co-authored-by: OmarHatem <omarh.ismail1@gmail.com>
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Adegoke David
GitHub
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commit
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90 changed files with 1775 additions and 2041 deletions
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@ -1,229 +1,22 @@
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import 'dart:async';
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import 'dart:convert';
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import 'dart:developer';
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import 'dart:typed_data';
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import 'package:cw_core/crypto_currency.dart';
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import 'package:cw_ethereum/erc20_balance.dart';
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import 'package:cw_core/erc20_token.dart';
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import 'package:cw_ethereum/ethereum_transaction_model.dart';
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import 'package:cw_ethereum/pending_ethereum_transaction.dart';
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import 'package:flutter/services.dart';
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import 'package:http/http.dart';
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import 'package:cw_evm/evm_chain_client.dart';
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import 'package:cw_evm/.secrets.g.dart' as secrets;
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import 'package:cw_evm/evm_chain_transaction_model.dart';
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import 'package:web3dart/web3dart.dart';
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import 'package:erc20/erc20.dart';
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import 'package:cw_core/node.dart';
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import 'package:cw_ethereum/ethereum_transaction_priority.dart';
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import 'package:cw_ethereum/.secrets.g.dart' as secrets;
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class EthereumClient {
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final httpClient = Client();
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Web3Client? _client;
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bool connect(Node node) {
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try {
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_client = Web3Client(node.uri.toString(), httpClient);
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return true;
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} catch (e) {
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return false;
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}
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}
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void setListeners(EthereumAddress userAddress, Function() onNewTransaction) async {
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// _client?.pendingTransactions().listen((transactionHash) async {
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// final transaction = await _client!.getTransactionByHash(transactionHash);
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//
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// if (transaction.from.hex == userAddress || transaction.to?.hex == userAddress) {
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// onNewTransaction();
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// }
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// });
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}
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Future<EtherAmount> getBalance(EthereumAddress address) async {
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try {
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return await _client!.getBalance(address);
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} catch (_) {
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return EtherAmount.zero();
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}
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}
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Future<int> getGasUnitPrice() async {
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try {
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final gasPrice = await _client!.getGasPrice();
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return gasPrice.getInWei.toInt();
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} catch (_) {
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return 0;
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}
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}
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Future<int> getEstimatedGas() async {
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try {
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final estimatedGas = await _client!.estimateGas();
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return estimatedGas.toInt();
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} catch (_) {
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return 0;
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}
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}
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Future<PendingEthereumTransaction> signTransaction({
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required EthPrivateKey privateKey,
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required String toAddress,
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required String amount,
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required int gas,
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required EthereumTransactionPriority priority,
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required CryptoCurrency currency,
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required int exponent,
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String? contractAddress,
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}) async {
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assert(currency == CryptoCurrency.eth ||
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currency == CryptoCurrency.maticpoly ||
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contractAddress != null);
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bool _isEVMCompatibleChain =
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currency == CryptoCurrency.eth || currency == CryptoCurrency.maticpoly;
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final price = _client!.getGasPrice();
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final Transaction transaction = createTransaction(
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from: privateKey.address,
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to: EthereumAddress.fromHex(toAddress),
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maxPriorityFeePerGas: EtherAmount.fromInt(EtherUnit.gwei, priority.tip),
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amount: _isEVMCompatibleChain ? EtherAmount.inWei(BigInt.parse(amount)) : EtherAmount.zero(),
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);
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final signedTransaction =
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await _client!.signTransaction(privateKey, transaction, chainId: chainId);
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final Function _sendTransaction;
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if (_isEVMCompatibleChain) {
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_sendTransaction = () async => await sendTransaction(signedTransaction);
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} else {
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final erc20 = ERC20(
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client: _client!,
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address: EthereumAddress.fromHex(contractAddress!),
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chainId: chainId,
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);
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_sendTransaction = () async {
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await erc20.transfer(
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EthereumAddress.fromHex(toAddress),
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BigInt.parse(amount),
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credentials: privateKey,
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transaction: transaction,
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);
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};
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}
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return PendingEthereumTransaction(
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signedTransaction: signedTransaction,
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amount: amount,
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fee: BigInt.from(gas) * (await price).getInWei,
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sendTransaction: _sendTransaction,
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exponent: exponent,
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);
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}
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class EthereumClient extends EVMChainClient {
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@override
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int get chainId => 1;
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Transaction createTransaction({
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required EthereumAddress from,
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required EthereumAddress to,
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required EtherAmount amount,
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EtherAmount? maxPriorityFeePerGas,
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}) {
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return Transaction(
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from: from,
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to: to,
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maxPriorityFeePerGas: maxPriorityFeePerGas,
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value: amount,
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);
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}
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Future<String> sendTransaction(Uint8List signedTransaction) async =>
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await _client!.sendRawTransaction(prepareSignedTransactionForSending(signedTransaction));
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@override
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Uint8List prepareSignedTransactionForSending(Uint8List signedTransaction) =>
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prependTransactionType(0x02, signedTransaction);
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Future getTransactionDetails(String transactionHash) async {
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// Wait for the transaction receipt to become available
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TransactionReceipt? receipt;
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while (receipt == null) {
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receipt = await _client!.getTransactionReceipt(transactionHash);
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await Future.delayed(Duration(seconds: 1));
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}
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// Print the receipt information
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print('Transaction Hash: ${receipt.transactionHash}');
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print('Block Hash: ${receipt.blockHash}');
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print('Block Number: ${receipt.blockNumber}');
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print('Gas Used: ${receipt.gasUsed}');
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/*
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Transaction Hash: [112, 244, 4, 238, 89, 199, 171, 191, 210, 236, 110, 42, 185, 202, 220, 21, 27, 132, 123, 221, 137, 90, 77, 13, 23, 43, 12, 230, 93, 63, 221, 116]
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I/flutter ( 4474): Block Hash: [149, 44, 250, 119, 111, 104, 82, 98, 17, 89, 30, 190, 25, 44, 218, 118, 127, 189, 241, 35, 213, 106, 25, 95, 195, 37, 55, 131, 185, 180, 246, 200]
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I/flutter ( 4474): Block Number: 17120242
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I/flutter ( 4474): Gas Used: 21000
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*/
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// Wait for the transaction receipt to become available
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TransactionInformation? transactionInformation;
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while (transactionInformation == null) {
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print("********************************");
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transactionInformation = await _client!.getTransactionByHash(transactionHash);
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await Future.delayed(Duration(seconds: 1));
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}
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// Print the receipt information
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print('Transaction Hash: ${transactionInformation.hash}');
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print('Block Hash: ${transactionInformation.blockHash}');
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print('Block Number: ${transactionInformation.blockNumber}');
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print('Gas Used: ${transactionInformation.gas}');
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/*
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Transaction Hash: 0x70f404ee59c7abbfd2ec6e2ab9cadc151b847bdd895a4d0d172b0ce65d3fdd74
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I/flutter ( 4474): Block Hash: 0x952cfa776f68526211591ebe192cda767fbdf123d56a195fc3253783b9b4f6c8
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I/flutter ( 4474): Block Number: 17120242
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I/flutter ( 4474): Gas Used: 53000
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*/
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}
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Future<ERC20Balance> fetchERC20Balances(
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EthereumAddress userAddress, String contractAddress) async {
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final erc20 = ERC20(address: EthereumAddress.fromHex(contractAddress), client: _client!);
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try {
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final balance = await erc20.balanceOf(userAddress);
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int exponent = (await erc20.decimals()).toInt();
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return ERC20Balance(balance, exponent: exponent);
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} catch (_) {
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return ERC20Balance(BigInt.zero);
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}
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}
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Future<Erc20Token?> getErc20Token(String contractAddress) async {
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try {
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final erc20 = ERC20(address: EthereumAddress.fromHex(contractAddress), client: _client!);
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final name = await erc20.name();
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final symbol = await erc20.symbol();
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final decimal = await erc20.decimals();
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return Erc20Token(
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name: name,
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symbol: symbol,
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contractAddress: contractAddress,
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decimal: decimal.toInt(),
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);
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} catch (e) {
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return null;
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}
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}
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void stop() {
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_client?.dispose();
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}
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Future<List<EthereumTransactionModel>> fetchTransactions(String address,
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@override
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Future<List<EVMChainTransactionModel>> fetchTransactions(String address,
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{String? contractAddress}) async {
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try {
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final response = await httpClient.get(Uri.https("api.etherscan.io", "/api", {
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@ -234,41 +27,18 @@ I/flutter ( 4474): Gas Used: 53000
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"apikey": secrets.etherScanApiKey,
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}));
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final _jsonResponse = json.decode(response.body) as Map<String, dynamic>;
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final jsonResponse = json.decode(response.body) as Map<String, dynamic>;
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if (response.statusCode >= 200 && response.statusCode < 300 && _jsonResponse['status'] != 0) {
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return (_jsonResponse['result'] as List)
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.map((e) => EthereumTransactionModel.fromJson(e as Map<String, dynamic>))
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if (response.statusCode >= 200 && response.statusCode < 300 && jsonResponse['status'] != 0) {
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return (jsonResponse['result'] as List)
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.map((e) => EVMChainTransactionModel.fromJson(e as Map<String, dynamic>, 'ETH'))
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.toList();
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}
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return [];
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} catch (e) {
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print(e);
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log(e.toString());
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return [];
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}
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}
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Web3Client? getWeb3Client() {
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return _client;
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}
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// Future<int> _getDecimalPlacesForContract(DeployedContract contract) async {
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// final String abi = await rootBundle.loadString("assets/abi_json/erc20_abi.json");
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// final contractAbi = ContractAbi.fromJson(abi, "ERC20");
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//
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// final contract = DeployedContract(
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// contractAbi,
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// EthereumAddress.fromHex(_erc20Currencies[erc20Currency]!),
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// );
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// final decimalsFunction = contract.function('decimals');
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// final decimals = await _client!.call(
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// contract: contract,
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// function: decimalsFunction,
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// params: [],
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// );
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//
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// int exponent = int.parse(decimals.first.toString());
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// return exponent;
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// }
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}
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