CW-527-Add-Polygon-MATIC-Wallet (#1179)

* chore: Initial setup for polygon package

* feat: Add polygon node urls

* feat: Add Polygon(MATIC) wallet WIP

* feat: Add Polygon(MATIC) wallet WIP

* feat: Add Polygon MATIC wallet [skip ci]

* fix: Issue with create/restore wallet for polygon

* feat: Add erc20 tokens for polygon

* feat: Adding Polygon MATIC Wallet

* fix: Add build command for polygon to workflow file to fix failing action

* fix: Switch evm to not display additional balance

* chore: Sync with remote

* fix: Revert change to inject app script

* feat: Add polygon erc20 tokens

* feat: Increase migration version

* fix: Restore from QR address validator fix

* fix: Adjust wallet connect connection flow to adapt to wallet type

* fix: Make wallet fetch nfts based on the current wallet type

* fix: Make wallet fetch nfts based on the current wallet type

* fix: Try fetching transactions with moralis

* fix: Requested review changes

* fix: Error creating new wallet

* fix: Revert script

* fix: Exclude spam NFTs from nft listing API response

* Update default_erc20_tokens.dart

* replace matic with matic poly

* Add polygon wallet scheme to app links

* style: reformat default_settings_migration.dart 

* minor enhancement 

* fix using different wallet function for setting the transaction priorities 

* fix: Add chain to calls

* Add USDC.e to initial coins

* Add other default polygon node 

* Use Polygon scan
some UI fixes

* Add polygon scan api key to secrets generation code

---------

Co-authored-by: Omar Hatem <omarh.ismail1@gmail.com>

cw_ethereum/lib/ethereum_client.dart

@@ -15,12 +15,12 @@ import 'package:cw_ethereum/ethereum_transaction_priority.dart';
 import 'package:cw_ethereum/.secrets.g.dart' as secrets;
 
 class EthereumClient {
-  final _httpClient = Client();
+  final httpClient = Client();
   Web3Client? _client;
 
   bool connect(Node node) {
     try {
-      _client = Web3Client(node.uri.toString(), _httpClient);
+      _client = Web3Client(node.uri.toString(), httpClient);
 
       return true;
     } catch (e) {
@@ -74,9 +74,11 @@ class EthereumClient {
     required int exponent,
     String? contractAddress,
   }) async {
-    assert(currency == CryptoCurrency.eth || contractAddress != null);
+    assert(currency == CryptoCurrency.eth ||
+        currency == CryptoCurrency.maticpoly ||
+        contractAddress != null);
 
-    bool _isEthereum = currency == CryptoCurrency.eth;
+    bool _isEVMCompatibleChain = currency == CryptoCurrency.eth || currency == CryptoCurrency.maticpoly;
 
     final price = _client!.getGasPrice();
 
@@ -84,19 +86,23 @@ class EthereumClient {
       from: privateKey.address,
       to: EthereumAddress.fromHex(toAddress),
       maxPriorityFeePerGas: EtherAmount.fromInt(EtherUnit.gwei, priority.tip),
-      value: _isEthereum ? EtherAmount.inWei(BigInt.parse(amount)) : EtherAmount.zero(),
+      value: _isEVMCompatibleChain ? EtherAmount.inWei(BigInt.parse(amount)) : EtherAmount.zero(),
     );
 
-    final signedTransaction = await _client!.signTransaction(privateKey, transaction);
+    final chainId = _getChainIdForCurrency(currency);
+
+    final signedTransaction =
+        await _client!.signTransaction(privateKey, transaction, chainId: chainId);
 
     final Function _sendTransaction;
 
-    if (_isEthereum) {
+    if (_isEVMCompatibleChain) {
       _sendTransaction = () async => await sendTransaction(signedTransaction);
     } else {
       final erc20 = ERC20(
         client: _client!,
         address: EthereumAddress.fromHex(contractAddress!),
+        chainId: chainId,
       );
 
       _sendTransaction = () async {
@@ -118,6 +124,16 @@ class EthereumClient {
     );
   }
 
+  int _getChainIdForCurrency(CryptoCurrency currency) {
+    switch (currency) {
+      case CryptoCurrency.maticpoly:
+        return 137;
+      case CryptoCurrency.eth:
+      default:
+        return 1;
+    }
+  }
+
   Future<String> sendTransaction(Uint8List signedTransaction) async =>
       await _client!.sendRawTransaction(prependTransactionType(0x02, signedTransaction));
 
@@ -198,7 +214,7 @@ I/flutter ( 4474): Gas Used: 53000
   Future<List<EthereumTransactionModel>> fetchTransactions(String address,
       {String? contractAddress}) async {
     try {
-      final response = await _httpClient.get(Uri.https("api.etherscan.io", "/api", {
+      final response = await httpClient.get(Uri.https("api.etherscan.io", "/api", {
         "module": "account",
         "action": contractAddress != null ? "tokentx" : "txlist",
         if (contractAddress != null) "contractaddress": contractAddress,

cw_ethereum/lib/ethereum_transaction_info.dart

@@ -1,3 +1,5 @@
+import 'dart:math';
+
 import 'package:cw_core/format_amount.dart';
 import 'package:cw_core/transaction_direction.dart';
 import 'package:cw_core/transaction_info.dart';
@@ -34,8 +36,10 @@ class EthereumTransactionInfo extends TransactionInfo {
   final String? to;
 
   @override
-  String amountFormatted() =>
-      '${formatAmount((ethAmount / BigInt.from(10).pow(exponent)).toString())} $tokenSymbol';
+  String amountFormatted() {
+    final amount = formatAmount((ethAmount / BigInt.from(10).pow(exponent)).toString());
+    return '${amount.substring(0, min(10, amount.length))} $tokenSymbol';
+  }
 
   @override
   String fiatAmount() => _fiatAmount ?? '';
@@ -44,7 +48,10 @@ class EthereumTransactionInfo extends TransactionInfo {
   void changeFiatAmount(String amount) => _fiatAmount = formatAmount(amount);
 
   @override
-  String feeFormatted() => '${(ethFee / BigInt.from(10).pow(18)).toString()} ETH';
+  String feeFormatted() {
+    final amount = (ethFee / BigInt.from(10).pow(18)).toString();
+    return '${amount.substring(0, min(10, amount.length))} ETH';
+  }
 
   factory EthereumTransactionInfo.fromJson(Map<String, dynamic> data) {
     return EthereumTransactionInfo(

cw_ethereum/lib/ethereum_transaction_model.dart

@@ -1,3 +1,4 @@
+//! Model used for in parsing transactions fetched using etherscan
 class EthereumTransactionModel {
   final DateTime date;
   final String hash;

cw_ethereum/lib/pending_ethereum_transaction.dart

@@ -21,8 +21,8 @@ class PendingEthereumTransaction with PendingTransaction {
 
   @override
   String get amountFormatted {
-    final _amount = BigInt.parse(amount) / BigInt.from(pow(10, exponent));
-    return _amount.toStringAsFixed(min(15, _amount.toString().length));
+    final _amount = (BigInt.parse(amount) / BigInt.from(pow(10, exponent))).toString();
+    return _amount.substring(0, min(10, _amount.length));
   }
 
   @override
@@ -30,8 +30,8 @@ class PendingEthereumTransaction with PendingTransaction {
 
   @override
   String get feeFormatted {
-    final _fee = fee / BigInt.from(pow(10, 18));
-    return _fee.toStringAsFixed(min(15, _fee.toString().length));
+    final _fee = (fee / BigInt.from(pow(10, 18))).toString();
+    return _fee.substring(0, min(10, _fee.length));
   }
 
   @override