//! Example of using a local wallet to sign and send a transaction.

use alloy::{

network::{EthereumWallet, TransactionBuilder},

node_bindings::Anvil,

primitives::{address, U256},

providers::{Provider, ProviderBuilder},

rpc::types::TransactionRequest,

signers::local::PrivateKeySigner,

};

use eyre::Result;

#[tokio::main]

async fn main() -> Result<()> {

// Spin up a local Anvil node.

// Ensure `anvil` is available in $PATH.

let anvil = Anvil::new().block_time(1).try_spawn()?;

// Set up signer from the first default Anvil account (Alice).

// [RISK WARNING! Writing a private key in the code file is insecure behavior.]

// The following code is for testing only. Set up signer from private key, be aware of danger.

// let signer: PrivateKeySigner = "<PRIVATE_KEY>".parse().expect("should parse private key");

let signer: PrivateKeySigner = anvil.keys()[0].clone().into();

let wallet = EthereumWallet::from(signer);

// Create a provider with the wallet.

let rpc_url = anvil.endpoint_url();

let provider =

ProviderBuilder::new().with_recommended_fillers().wallet(wallet).on_http(rpc_url);

// Build a transaction to send 100 wei from Alice to Vitalik.

// The `from` field is automatically filled to the first signer's address (Alice).

let tx = TransactionRequest::default()

.with_to(address!("d8dA6BF26964aF9D7eEd9e03E53415D37aA96045"))

.with_value(U256::from(100));

// Send the transaction and wait for inclusion.

let tx_hash = provider.send_transaction(tx).await?.watch().await?;

println!("Sent transaction: {tx_hash}");

Ok(())

}