Smart Contracts (read and write) Interaction

[quetool]

Description

Based on @bobwith2bees implementation we added support for a better interaction with smart contracts.

Resolves https://github.com/WalletConnect/WalletConnectFlutterV2/issues/255

How Has This Been Tested?

• A Smart Contract was created on Sepolia Network and read and write functions were executed during tests https://sepolia.etherscan.io/token/0xbe60d05c11bd1c365849c824e0c2d880d2466eaf?a=0x59e2f66C0E96803206B6486cDb39029abAE834c0

Due Dilligence

• [ ] Breaking change
• [X] Requires a documentation update

Demo using WalletConnect's Flutter dApp and WalletConnect's Flutter Wallet (both included in this repository)	Demo using WalletConnect's Flutter dApp and Zerion wallet

Example

• Example on how to call transfer function from a Smart Contract to send 0.010 value of it's token.

final deployedContract = DeployedContract(
  ContractAbi.fromJson(
    jsonEncode({contract-abi}),
    'SmartContract_Name',
  ),
  EthereumAddress.fromHex('smart_contract_address'),
);

return web3App.requestWriteContract(
  topic: topic,
  chainId: 'eip155:11155111',
  rpcUrl: 'https://ethereum-sepolia.publicnode.com',
  deployedContract: deployedContract,
  functionName: 'transfer',
  transaction: Transaction(
    from: EthereumAddress.fromHex(address),
    to: EthereumAddress.fromHex('0x59e2f66C0E96803206B6486cDb39029abAE834c0'),
    value: EtherAmount.fromInt(EtherUnit.finney, 10), // == 0.010
  ),
);

• Example on how to call balanceOf function of a Smart Contract to check wallet balance of it's token.

final deployedContract = DeployedContract(
  ContractAbi.fromJson(
    jsonEncode({contract-abi}),
    'SmartContract_Name',
  ),
  EthereumAddress.fromHex('smart_contract_address'),
);

return web3App.requestReadContract(
  deployedContract: deployedContract,
  functionName: 'balanceOf',
  rpcUrl: 'https://ethereum-sepolia.publicnode.com',
  parameters: [
    EthereumAddress.fromHex('0xaddress'),
  ],
);