Refactoring

CHANGELOG.md

@@ -1,3 +1,66 @@
+## 0.1.0
+
+* Training wheel support for entrypoint v0.7.0 via pimlico bundler
+* Fix issue with gas multiplier
+* Added safe4337module abi for v0.7.0
+* Add support for custom paymaster address
+
+## 0.1.0-r3
+
+* Add mutisend address to constants
+* Add support for Safe account batch transactions
+
+## 0.1.0-r2
+
+* Fix safe transaction encoding
+* Remove _checkDeployment function in counterfactual creation
+* Add getBlockInformation in JsonRPCProvider
+
+## 0.1.0-r1
+
+* Mainnet Pre-release
+* refactor sdk to use the factory method for creating smart-accounts
+* add safe smart accounts via safe plugin
+* reduce external dependencies to 3
+* implement custom errors and add logger for debugging
+* update contract abis, adding more erc20/erc721 abi snippets
+* fix paymaster plugin context incompatibility
+* add utility for packing and unpacking uint256 values
+* update chain configuration to surpport minimal modest chains
+* update example to a real flutter example
+* rename library name from variance to variance_dart for consistency
+* update API refs and README to reflect new changes
+
+## 0.0.9
+
+* Add support for entrypoint v0.7 in parrallel.
+
+## 0.0.8
+
+* Add paymaster as a plugin
+* Rename plugins.dart to mixins
+* Improve gas and nonce calculation process.
+
+## 0.0.7
+
+* Deprecate passing wallet address via constructor as fields will be made final
+* Enable global gas settings and fee % multiplier
+* Introduce userOp retry mechanism
+
+## 0.0.6
+
+* Sunset all goerli chains
+
+## 0.0.5
+
+* Added missing required blockParam to `eth_call`
+
+* Reduced default callgasLimit and verificationGasLimit to 250K and 750k respectively in `eth_estimateUserOperationGas`
+
+* Prevent redundant eth_call's in fetching nonce/deployment status
+
+* Reduced strict internal op callGasLimit validation from 21k gas 12k gas requirement
+
 ## 0.0.4
 
 * Added a Secure Storage Repository for saving credentials to encrypted android shared-preference and iOS keychain

README.md

@@ -7,166 +7,156 @@ Variance is a Dart SDK designed to simplify interaction with Ethereum-based bloc
 - **ABI Encoding/Decoding:** Easily encode and decode ABI data for Ethereum smart contract and Entrypoint interactions.
 - **Transaction Handling:** Simplify the process of creating and sending UserOperations.
 - **Token Operations:** Work with ERC20 and ERC721 tokens, including transfer and approval functionalities.
-- **Secure Storage:** Securely store and manage sensitive data such as private keys and credentials.
-- **Web3 Functionality:** Interact with Ethereum nodes and bundlers using web3 functions like `eth_call`, `eth_sendTransaction`, `eth_sendUserOperation`, etc.
-- **PassKeyPair and HDWalletSigner:** Manage smart accounts signers using Passkeys or Seed Phrases.
+- **Web3 Functionality:** Interact with Ethereum nodes and bundlers using abstracted methods over, `eth_sendTransaction`, and `eth_sendUserOperation`.
+- **SecP256r1 Signatures:** Sign transactions with SecP256r1 signatures.
 
 ## Getting Started
 
 ### Installation
 
-```yml
-// Add this line to your pubspec.yaml file
-
-dependencies:
-  variance_dart: ^0.0.4
-```
-
-Then run:
+open your terminal and run the following command:
 
 ```sh
-flutter pub get
+flutter pub add variance_dart
+flutter pub add web3_signers
+
+# optionally
+flutter pub add web3dart
 ```
 
 ### Usage
 
 ```dart
 // Import the package
-import 'package:variance_dart/utils.dart';
-import 'package:variance_dart/variance.dart';
+import 'package:web3_signers/web3_signers.dart';
+import 'package:variance_dart/variance_dart.dart';
 
 // optionally
-import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 import 'package:web3dart/web3dart.dart';
 ```
 
-configure your chains: there are 2 ways to get the chain configuration. either manually or using the already supported configurations.
+### Chain Configuration
 
 ```dart
-Chain chain;
-
-// manually
 const String rpcUrl = 'http://localhost:8545';
 const String bundlerUrl = 'http://localhost:3000/rpc';
+const Uint256 salt = const Uint256.zero;
 
-chain = Chain(
-    ethRpcUrl: rpcUrl,
-    bundlerUrl: bundlerUrl,
-    entrypoint: Constants.entrypoint,
-    accountFactory: Constants.accountFactory,
-    chainId: 1337,
-    explorer: "");
-
-// using pre configured chain
-chain = Chains.getChain(Network.localhost)
-    ..ethRpcUrl = rpcUrl
+final Chain chain = Chains.getChain(Network.localhost)
+    ..jsonRpcUrl = rpcUrl
     ..bundlerUrl = bundlerUrl;
 ```
 
-In order to create a smart wallet client you need to set up a signer, which will sign useroperation hashes to be verified onchain.
-there are  3 available signers:
+> There are 8 available networks: ethereum, polygon, optimism, base, arbitrumOne, linea, opBnB and scroll. 3 available testnets: sepolia, mumbai and baseTestent. You can also develop on localHost.
 
-- passkeys
-- hd wallet
-- simple credential (privatekey)
+Additionally, you can specify a different Entrypoint address. By default, the entrypoin v0.6 is used.
 
-> Variance SDK can be used to create both EOA and Smart Wallets. the `HD wallet signer` itself is a fully featured EOA wallet that can be used to build any EOA wallet like metamask. it can also be used as an account signer for a smart wallet.
+```dart
+final EntryPointAddress entrypointAddress = EntryPointAddress.v07;
+chain.entrypoint = entrypointAddress;
+```
+
+Also if wish to use paymasters with your smart wallet you can do so by specifying the endpoint of the paymaster. By default the paymaster is set to null. This would add a paymaster Plugin to the smart wallet.
 
 ```dart
-// create smart wallet signer based of seed phrase
-final HDWalletSigner hd = HDWalletSigner.createWallet();
-print("mnemonic: ${hd.exportMnemonic()}");
-
-// create a smart wallet signer based on passkeys
-// this operation requires biometrics verification from the user
-final PassKeyPair pkp =
-    await PassKeySigner("myapp.xyz", "myapp", "https://myapp.xyz")
-        .register("<user name>", true);
-print("pkp: ${pkp.toJson()}");
+final String paymasterUrl = 'https://api.pimlico.io/v2/84532/rpc?apikey=...';
+chain.paymasterUrl = paymasterUrl;
 ```
 
-Optionally the credentials returned from the signer instances can be securely saved on device android encrypted shared preferences or ios keychain using the `SecureStorageMiddleware`.
+If you have additional context for the paymaster, you will be able to add it to the smart wallet after creation or before initiating a transaction.
 
 ```dart
-// save a signer credential to device
-await hd
-    .withSecureStorage(FlutterSecureStorage())
-    .saveCredential(CredentialType.hdwallet);
+wallet.plugin<Paymaster>('paymaster').context = {'key': 'value'};
+```
 
-await pkp
-    .withSecureStorage(FlutterSecureStorage())
-    .saveCredential(CredentialType.passkeypair);
+### Signers
 
-// load a credential from the device
-final ss = SecureStorageMiddleware(secureStorage: FlutterSecureStorage());
-final hdInstance =
-    await HDWalletSigner.loadFromSecureStorage(storageMiddleware: ss);
-print("pkp: ${hdInstance?.exportMnemonic()}");
+In order to create a smart wallet client you need to set up a signer, which will sign useroperation hashes to be verified onchain. Only signers available in the [web3signers](https://pub.dev/packages/web3_signers) package can be used.
 
-// NOTE: interactions with securestorage can be authenticated when using `SecureStorageMiddleware`
+> You have to use the correct signer for the type of account you want to create.
 
-final ss = SecureStorageMiddleware(secureStorage: FlutterSecureStorage(), authMiddleware: AuthenticationMiddleware());
-// then used with `SecureStorageMiddleware` in the following way
+1. `PrivateKeys` - use with simple accounts and safe accounts only
+2. `Passkey` - use with p256 smart accounts and safe Passkey accounts only
+3. `EOA Wallet (Seed Phrases)` - use with simple smart accounts and safe accounts only
+4. `HardWare Signers (Secure Enclave/Keystore)` - use with p256 smart accounts only
 
-ss.save("key", "value", options: SSAuthOperationOptions(requiresAuth: true, authReason: "reason"));
-ss.read("key"); // default options are used i.e requiresAuth: false
-ss.delete("key", options: SSAuthOperationOptions(requiresAuth: false)); // explicitly reject authentication
+### Smart Wallet Factory
+
+The smart wallet factory handles the creation of smart wallet instances. Make sure you have created a signer from the previous step.
+
+```dart
+final SmartWalletFactory smartWalletFactory = SmartWalletFactory(chain, signer);
 ```
 
-Interacting with the smart wallet:
+#### To Create a Simple Smart Account
 
 ```dart
-// create a smart wallet client
-final walletClient = SmartWallet(
-    chain: chain,
-    signer: hd,
-    bundler: BundlerProvider(chain, RPCProvider(chain.bundlerUrl!)),
-);
+final Smartwallet wallet = await smartWalletFactory.createSimpleAccount(salt);
+print("simple wallet address: ${wallet.address.hex}");
+```
+
+#### To create a P256 Smart Account (Secure Enclave/Keystore)
 
-// create a simple account based on hd
-final SmartWallet simpleSmartAccount =
-      await walletClient.createSimpleAccount(salt);
-print("simple account address: ${simpleSmartAccount.address}");
+```dart
+final Smartwallet wallet = await smartWalletFactory.createP256Account(keypair, salt);
+print("p256 wallet address: ${wallet.address.hex}");
+```
 
-// create a simple account based on pkp
-final SmartWallet simplePkpAccount =
-      await walletClient.createSimplePasskeyAccount(pkp, salt);
-print("simple pkp account address: ${simplePkpAccount.address}");
+Your keypair must be either be the `PassKeyPair` or `P256Credential` return when registering with your secp256r1 signer.
+Additionally, you can pass a recovery address to the `createP256Account` method.
 
+```dart
+final Smartwallet wallet = await smartWalletFactory.createP256Account(keypair, salt, recoveryAddress);
+print("p256 wallet address: ${wallet.address.hex}");
+```
+
+#### To create a [Safe](https://safe.global) Smart Account
+
+```dart
+final Smartwallet wallet = await smartWalletFactory
+    .createSafeAccount(salt);
+print("safe wallet address: ${wallet.address.hex}");
+```
+
+Additionally, you can pass in multisig `owners` and the `threshold` to the `createSafeAccount` method.
+
+```dart
+final Smartwallet wallet = await smartWalletFactory
+    .createSafeAccount(salt, [...extraOwners], threshold);
+print("safe wallet address: ${wallet.address.hex}");
+```
+
+> Safe SecP256r1 signers can not be used with this SDK yet.
+
+### Interacting with the Smart Wallet
+
+```dart
 // retrieve the balance of a smart wallet
-final EtherAmount balance = await simpleSmartAccount.balance;
+final EtherAmount balance = await wallet.balance;
 print("account balance: ${balance.getInWei}");
 
 // retrive the account nonce
-final Uint256 nonce = await simpleSmartAccount.nonce;
+final Uint256 nonce = await wallet.nonce;
 print("account nonce: ${nonce.toInt()}");
 
 // check if a smart wallet has been deployed
-final bool deployed = await simpleSmartAccount.deployed;
+final bool deployed = await wallet.deployed;
 print("account deployed: $deployed");
 
 // get the init code of the smart wallet
-final String initCode = simpleSmartAccount.initCode;
+final String initCode = wallet.initCode;
 print("account init code: $initCode");
 
 // perform a simple transaction (send ether to another account)
 // account must be prefunded with native token. paymaster is not yet implemented
-await simpleSmartAccount.send(
+await wallet.send(
   EthereumAddress.fromHex(
       "0x5FF137D4b0FDCD49DcA30c7CF57E578a026d2789"), // receive address
-  getConversion("0.7142"), // 0.7142 ether
+  EtherAmount.fromInt(EtherUnit.ether, 0.7142), // 0.7142 ether
 );
-
-
-// utility function to convert eth amount from string to wei
-EtherAmount getConversion(String amount) {
-  final amtToDb = double.parse(amount);
-  return EtherAmount.fromBigInt(
-      EtherUnit.wei, BigInt.from(amtToDb * pow(10, 18)));
-}
 ```
 
-For detailed usage and examples, refer to the [documentation](https://docs.variance.space). Additional refer to the [demo](https://github.com/vaariance/variancedemo) for use in a flutter app.
+For detailed usage and examples, refer to the [documentation](https://docs.variance.space). Additional refer to the [example](./example/) for use in a flutter app.
 
 ## API Reference
 

example/.gitignore

@@ -0,0 +1,43 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.pub-cache/
+.pub/
+/build/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release

example/.metadata

@@ -0,0 +1,30 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: "41456452f29d64e8deb623a3c927524bcf9f111b"
+  channel: "stable"
+
+project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: 41456452f29d64e8deb623a3c927524bcf9f111b
+      base_revision: 41456452f29d64e8deb623a3c927524bcf9f111b
+    - platform: android
+      create_revision: 41456452f29d64e8deb623a3c927524bcf9f111b
+      base_revision: 41456452f29d64e8deb623a3c927524bcf9f111b
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'