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/// This module is the EVM network abstraction layer.
pub mod contract;
pub mod erc;
pub mod mempool;
pub mod safe;
pub mod tool;
pub mod trade;
pub mod types;
use std::sync::Arc;
use crate::mempool::MempoolListener;
use crate::mempool::MempoolService;
use crate::trade::TradeEventListener;
use crate::trade::TradeService;
use crate::types::EvmError;
use ethers::providers::Middleware;
use ethers::{
signers::Signer,
types::{Address, H256, TransactionRequest, U256},
};
use evm_client::EvmClient;
use evm_client::EvmType;
/// EVM Client for interacting with various EVM chains
#[derive(Clone)]
pub struct Evm {
pub client: EvmClient,
}
impl Evm {
/// Create a new EVM client without wallet
///
/// # Example
/// ```
/// use evm_utils::Evm;
/// use evm_client::EvmType;
///
/// async fn example() -> Result<(), Box<dyn std::error::Error>> {
/// let evm = Evm::new(EvmType::Ethereum).await?;
/// let chain_id = evm.get_chain_id().await?;
/// println!("Connected to chain ID: {}", chain_id);
/// Ok(())
/// }
/// ```
pub async fn new(evm_type: EvmType) -> Result<Self, EvmError> {
match EvmClient::from_type(evm_type).await {
Ok(client) => Ok(Self { client: client }),
Err(e) => Err(EvmError::RpcError(format!("Rpc Error:{:?}", e))),
}
}
/// Create a new EVM client with wallet
///
/// # Example
/// ```
/// use evm_utils::Evm;
/// use evm_client::EvmType;
///
/// async fn example() -> Result<(), Box<dyn std::error::Error>> {
/// let private_key = "your_private_key_here";
/// let evm = Evm::with_wallet(EvmType::Ethereum, private_key).await?;
/// let balance = evm.get_wallet_balance().await?;
/// println!("Wallet balance: {}", balance);
/// Ok(())
/// }
/// ```
pub async fn with_wallet(evm_type: EvmType, private_key: &str) -> Result<Self, EvmError> {
match EvmClient::from_wallet(evm_type, private_key).await {
Ok(client) => Ok(Self { client: client }),
Err(e) => Err(EvmError::RpcError(format!("Rpc Error:{:?}", e))),
}
}
/// Get chain ID
///
/// # Example
/// ```
/// async fn example(evm: Evm) -> Result<(), Box<dyn std::error::Error>> {
/// let chain_id = evm.get_chain_id().await?;
/// println!("Chain ID: {}", chain_id);
/// Ok(())
/// }
/// ```
pub async fn get_chain_id(&self) -> Result<u64, EvmError> {
self.client
.provider
.get_chainid()
.await
.map_err(|e| EvmError::RpcError(format!("Failed to get chain ID: {}", e)))
.map(|id| id.as_u64())
}
/// Get block number
///
/// # Example
/// ```
/// async fn example(evm: Evm) -> Result<(), Box<dyn std::error::Error>> {
/// let block_number = evm.get_block_number().await?;
/// println!("Current block number: {}", block_number);
/// Ok(())
/// }
/// ```
pub async fn get_block_number(&self) -> Result<u64, EvmError> {
self.client
.provider
.get_block_number()
.await
.map_err(|e| EvmError::RpcError(format!("Failed to get block number: {}", e)))
.map(|num| num.as_u64())
}
/// Get balance of an address
///
/// # Example
/// ```
/// use ethers::types::Address;
///
/// async fn example(evm: Evm) -> Result<(), Box<dyn std::error::Error>> {
/// let address: Address = "0x742d35Cc6634C0532925a3b8D6B5d7a4C03a3a7d".parse()?;
/// let balance = evm.get_balance(address).await?;
/// println!("Balance: {}", balance);
/// Ok(())
/// }
/// ```
pub async fn get_balance(&self, address: Address) -> Result<U256, EvmError> {
self.client
.provider
.get_balance(address, None)
.await
.map_err(|e| EvmError::RpcError(format!("Failed to get balance: {}", e)))
}
/// Get transaction count (nonce) for an address
///
/// # Example
/// ```
/// use ethers::types::Address;
///
/// async fn example(evm: Evm) -> Result<(), Box<dyn std::error::Error>> {
/// let address: Address = "0x742d35Cc6634C0532925a3b8D6B5d7a4C03a3a7d".parse()?;
/// let nonce = evm.get_transaction_count(address).await?;
/// println!("Nonce: {}", nonce);
/// Ok(())
/// }
/// ```
pub async fn get_transaction_count(&self, address: Address) -> Result<u64, EvmError> {
self.client
.provider
.get_transaction_count(address, None)
.await
.map_err(|e| EvmError::RpcError(format!("Failed to get transaction count: {}", e)))
.map(|nonce| nonce.as_u64())
}
/// Get gas price
///
/// # Example
/// ```
/// async fn example(evm: Evm) -> Result<(), Box<dyn std::error::Error>> {
/// let gas_price = evm.get_gas_price().await?;
/// println!("Gas price: {}", gas_price);
/// Ok(())
/// }
/// ```
pub async fn get_gas_price(&self) -> Result<U256, EvmError> {
self.client
.provider
.get_gas_price()
.await
.map_err(|e| EvmError::RpcError(format!("Failed to get gas price: {}", e)))
}
/// Send a raw transaction
///
/// # Example
/// ```
/// use ethers::types::{TransactionRequest, Address, U256};
///
/// async fn example(evm: Evm) -> Result<(), Box<dyn std::error::Error>> {
/// let to_address: Address = "0x742d35Cc6634C0532925a3b8D6B5d7a4C03a3a7d".parse()?;
/// let tx = TransactionRequest::new()
/// .to(to_address)
/// .value(U256::from(1000000000000000u64));
///
/// let tx_hash = evm.send_transaction(tx).await?;
/// println!("Transaction sent: {:?}", tx_hash);
/// Ok(())
/// }
/// ```
pub async fn send_transaction(&self, mut tx: TransactionRequest) -> Result<H256, EvmError> {
if self.client.wallet.is_none() {
return Err(EvmError::WalletError("No wallet configured".to_string()));
}
let wallet = self.client.wallet.as_ref().unwrap();
tx.from = Some(wallet.address());
let chain_id = self.get_chain_id().await?;
tx.chain_id = Some(chain_id.into());
if tx.nonce.is_none() {
let nonce = self.get_transaction_count(wallet.address()).await?;
tx.nonce = Some(nonce.into());
}
if tx.gas_price.is_none() {
let gas_price = self.get_gas_price().await?;
tx.gas_price = Some(gas_price);
}
let pending_tx = self
.client
.provider
.send_transaction(tx, None)
.await
.map_err(|e| {
EvmError::TransactionError(format!("Failed to send transaction: {}", e))
})?;
Ok(pending_tx.tx_hash())
}
/// Get transaction receipt
///
/// # Example
/// ```
/// use ethers::types::H256;
///
/// async fn example(evm: Evm) -> Result<(), Box<dyn std::error::Error>> {
/// let tx_hash: H256 = "0x...".parse()?;
/// let receipt = evm.get_transaction_receipt(tx_hash).await?;
/// if let Some(receipt) = receipt {
/// println!("Transaction status: {}", receipt.status);
/// }
/// Ok(())
/// }
/// ```
pub async fn get_transaction_receipt(
&self,
tx_hash: H256,
) -> Result<Option<ethers::types::TransactionReceipt>, EvmError> {
self.client
.provider
.get_transaction_receipt(tx_hash)
.await
.map_err(|e| EvmError::RpcError(format!("Failed to get transaction receipt: {}", e)))
}
/// Get logs by filter
///
/// # Example
/// ```
/// use ethers::types::Filter;
/// use ethers::types::Address;
///
/// async fn example(evm: Evm) -> Result<(), Box<dyn std::error::Error>> {
/// let contract_address: Address = "0x...".parse()?;
/// let filter = Filter::new()
/// .address(contract_address)
/// .from_block(1000000)
/// .to_block(1000100);
///
/// let logs = evm.get_logs(filter).await?;
/// println!("Found {} logs", logs.len());
/// Ok(())
/// }
/// ```
pub async fn get_logs(
&self,
filter: ethers::types::Filter,
) -> Result<Vec<ethers::types::Log>, EvmError> {
self.client
.provider
.get_logs(&filter)
.await
.map_err(|e| EvmError::RpcError(format!("Failed to get logs: {}", e)))
}
/// Get native token balance for the wallet
///
/// # Example
/// ```
/// async fn example(evm: Evm) -> Result<(), Box<dyn std::error::Error>> {
/// let balance = evm.get_wallet_balance().await?;
/// println!("Wallet balance: {}", balance);
/// Ok(())
/// }
/// ```
pub async fn get_wallet_balance(&self) -> Result<U256, EvmError> {
if let Some(wallet) = &self.client.wallet {
let address = wallet.address();
self.get_balance(address).await
} else {
Err(EvmError::WalletError("No wallet configured".to_string()))
}
}
/// Get trade service for executing trades
///
/// # Example
/// ```
/// use std::sync::Arc;
///
/// async fn example(evm: Evm) -> Result<(), Box<dyn std::error::Error>> {
/// let evm_arc = Arc::new(evm);
/// let trade_service = evm_arc.clone().get_trade_service();
/// Ok(())
/// }
/// ```
pub fn get_trade_service(self: Arc<Self>) -> TradeService {
TradeService::new(self.clone())
}
/// Get trade event listener for monitoring trade events
///
/// # Example
/// ```
/// use std::sync::Arc;
///
/// async fn example(evm: Evm) -> Result<(), Box<dyn std::error::Error>> {
/// let evm_arc = Arc::new(evm);
/// let trade_listener = evm_arc.clone().get_trade_listener();
/// Ok(())
/// }
/// ```
pub fn get_trade_listener(self: Arc<Self>) -> TradeEventListener {
TradeEventListener::new(self.clone())
}
/// Get mempool service for mempool interactions
///
/// # Example
/// ```
/// use std::sync::Arc;
///
/// async fn example(evm: Evm) -> Result<(), Box<dyn std::error::Error>> {
/// let evm_arc = Arc::new(evm);
/// let mempool_service = evm_arc.clone().get_mempool_service();
/// Ok(())
/// }
/// ```
pub fn get_mempool_service(self: Arc<Self>) -> MempoolService {
MempoolService::new(self.clone())
}
/// Get mempool listener for monitoring mempool activities
///
/// # Example
/// ```
/// use std::sync::Arc;
///
/// async fn example(evm: Evm) -> Result<(), Box<dyn std::error::Error>> {
/// let evm_arc = Arc::new(evm);
/// let mempool_listener = evm_arc.clone().get_mempool_listener();
/// Ok(())
/// }
/// ```
pub fn get_mempool_listener(self: Arc<Self>) -> MempoolListener {
MempoolListener::new(self.clone())
}
}