anya-core 1.2.0

use std::error::Error;
// src/bitcoin/sidechains/rsk/bridge.rs

//! RSK Bridge implementation for Bitcoin cross-chain operations
//!
//! Implements Rootstock (RSK) peg-in and peg-out protocol for secure
//! transfers between Bitcoin and RSK sidechains.
//! [AIR-2][AIS-2][AIM-2][AIP-2][RES-2]

use std::fmt;
use std::sync::Arc;
use std::time::{SystemTime, UNIX_EPOCH};
use std::str::FromStr;
use std::collections::HashMap;

use async_trait::async_trait;
use bitcoin::{Address as BtcAddress, Transaction as BtcTransaction, Txid as BtcTxid, Script, Network};
use hex::{encode as hex_encode, decode as hex_decode};
use log::{debug, info, warn, error, trace};
use reqwest::Client;
use serde::{Serialize, Deserialize};
use thiserror::Error;
use tokio::sync::Mutex;
use uuid::Uuid;
use web3::{
    Web3,
    transports::Http,
    types::{H160, H256, U256, Address, Bytes, TransactionRequest},
    contract::{Contract, Options},
};

use crate::AnyaResult;
use crate::bitcoin::wallet::BitcoinWallet;
use super::client::{RskClient, RskError, NetworkType};

/// Bridge errors
#[derive(Error, Debug)]
pub enum BridgeError {
    /// Invalid bridge configuration
    #[error("Invalid bridge configuration: {0}")]
    InvalidConfiguration(String),
    
    /// Transaction creation error
    #[error("Failed to create transaction: {0}")]
    TransactionCreationError(String),
    
    /// Peg-in error
    #[error("Peg-in failed: {0}")]
    PegInError(String),
    
    /// Peg-out error
    #[error("Peg-out failed: {0}")]
    PegOutError(String),
    
    /// Federation error
    #[error("Federation error: {0}")]
    FederationError(String),
    
    /// Validation error
    #[error("Validation error: {0}")]
    ValidationError(String),
    
    /// Bitcoin RPC error
    #[error("Bitcoin RPC error: {0}")]
    BitcoinRpcError(String),
    
    /// RSK node error
    #[error("RSK node error: {0}")]
    RskNodeError(String),
    
    /// Insufficient funds
    #[error("Insufficient funds: {0}")]
    InsufficientFunds(String),
    
    /// Network error
    #[error("Network error: {0}")]
    NetworkError(String),
    
    /// Client error
    #[error("RSK client error: {0}")]
    ClientError(#[from] RskError),
    
    /// Web3 error
    #[error("Web3 error: {0}")]
    Web3Error(String),
    
    /// Contract error
    #[error("Contract error: {0}")]
    ContractError(String),
    
    /// Operation not found
    #[error("Operation not found: {0}")]
    OperationNotFoundError(String),
    
    /// Bridge timeout
    #[error("Bridge timeout: {0}")]
    TimeoutError(String),
}

/// Bridge configuration
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct BridgeConfig {
    /// Current federation address on Bitcoin network
    pub federation_address: String,
    
    /// Bridge contract address on RSK
    pub bridge_contract_address: String,
    
    /// Minimum confirmations required for peg-in
    pub min_confirmations: u32,
    
    /// Minimum amount for peg-in (in satoshis)
    pub min_peg_in_amount: u64,
    
    /// Maximum amount for peg-in (in satoshis)
    pub max_peg_in_amount: Option<u64>,
    
    /// Fee percentage for peg operations
    pub fee_percentage: f64,
    
    /// RSK network type
    pub network: NetworkType,
    
    /// Timeout for peg operations (in seconds)
    pub operation_timeout: u64,
    
    /// Gas limit for RSK transactions
    pub gas_limit: u64,
    
    /// Gas price strategy
    pub gas_price_strategy: GasPriceStrategy,
}

/// Gas price strategies
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
pub enum GasPriceStrategy {
    /// Low priority (slower but cheaper)
    Low,
    
    /// Medium priority (balanced)
    Medium,
    
    /// High priority (faster but more expensive)
    High,
    
    /// Custom gas price in wei
    Custom(u64),
}

impl Default for BridgeConfig {
    fn default() -> Self {
        Self {
            // Default federation address (testnet)
            federation_address: "2MvQsnz92vZGGBXMcTVyHMHYsGFpA4oVZoX".to_string(),
            // Default bridge contract address (testnet)
            bridge_contract_address: "0x0000000000000000000000000000000001000006".to_string(),
            min_confirmations: 10,
            min_peg_in_amount: 1_000_000, // 0.01 BTC
            max_peg_in_amount: Some(1_000_000_000), // 10 BTC
            fee_percentage: 0.2, // 0.2%
            network: NetworkType::Testnet,
            operation_timeout: 3600, // 1 hour
            gas_limit: 500_000,
            gas_price_strategy: GasPriceStrategy::Medium,
        }
    }
}

/// Parameters for pegging in (BTC to RBTC)
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PegInParams {
    /// Bitcoin transaction ID of the transaction sending funds to federation address
    pub btc_tx_id: Option<String>,
    
    /// Direct amount to send to federation (if not using an existing tx)
    pub amount: Option<u64>,
    
    /// RSK destination address (where RBTC will be received)
    pub rsk_address: String,
    
    /// Custom fee rate (satoshis per byte)
    pub fee_rate: Option<u64>,
    
    /// Whether to wait for confirmations
    pub wait_for_confirmations: bool,
    
    /// Custom gas limit
    pub gas_limit: Option<u64>,
    
    /// Custom gas price
    pub gas_price: Option<u64>,
}

/// Parameters for pegging out (RBTC to BTC)
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PegOutParams {
    /// Bitcoin recipient address (where BTC will be received)
    pub btc_address: String,
    
    /// Amount in satoshis
    pub amount: u64,
    
    /// Fee in satoshis
    pub fee: u64,
    
    /// Whether to wait for confirmations
    pub wait_for_confirmations: bool,
    
    /// Custom gas limit
    pub gas_limit: Option<u64>,
    
    /// Custom gas price
    pub gas_price: Option<u64>,
}

/// Status of a peg-in operation
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub enum PegInStatus {
    /// Waiting for Bitcoin confirmation
    WaitingForBitcoinConfirmation {
        /// Bitcoin transaction ID
        btc_txid: String,
        /// Current confirmations
        confirmations: u32,
        /// Required confirmations
        required_confirmations: u32,
    },
    
    /// Waiting for RSK bridge processing
    WaitingForRskProcessing {
        /// Bitcoin transaction ID
        btc_txid: String,
        /// RSK transaction ID
        rsk_txid: Option<String>,
    },
    
    /// Waiting for RSK confirmation
    WaitingForRskConfirmation {
        /// Bitcoin transaction ID
        btc_txid: String,
        /// RSK transaction ID
        rsk_txid: String,
        /// Confirmations
        confirmations: u32,
    },
    
    /// Peg-in complete
    Complete {
        /// Bitcoin transaction ID
        btc_txid: String,
        /// RSK transaction ID
        rsk_txid: String,
        /// Amount credited in RBTC (satoshis)
        credited_amount: u64,
        /// Fee paid (satoshis)
        fee_paid: u64,
    },
    
    /// Peg-in failed
    Failed {
        /// Bitcoin transaction ID
        btc_txid: Option<String>,
        /// Error message
        error: String,
    },
}

/// Status of a peg-out operation
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub enum PegOutStatus {
    /// Waiting for RSK confirmation
    WaitingForRskConfirmation {
        /// RSK transaction ID
        rsk_txid: String,
        /// Confirmations
        confirmations: u32,
    },
    
    /// Waiting for Bitcoin confirmation
    WaitingForBitcoinConfirmation {
        /// RSK transaction ID
        rsk_txid: String,
        /// Bitcoin transaction ID
        btc_txid: String,
        /// Confirmations
        confirmations: u32,
        /// Required confirmations
        required_confirmations: u32,
    },
    
    /// Peg-out complete
    Complete {
        /// RSK transaction ID
        rsk_txid: String,
        /// Bitcoin transaction ID
        btc_txid: String,
        /// Amount received in BTC (satoshis)
        received_amount: u64,
        /// Fee paid (satoshis)
        fee_paid: u64,
    },
    
    /// Peg-out failed
    Failed {
        /// RSK transaction ID
        rsk_txid: Option<String>,
        /// Error message
        error: String,
    },
}

/// Bridge operation type
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
pub enum BridgeOperationType {
    /// Peg-in operation (Bitcoin to RSK)
    PegIn,
    
    /// Peg-out operation (RSK to Bitcoin)
    PegOut,
}

impl fmt::Display for BridgeOperationType {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            BridgeOperationType::PegIn => write!(f, "Peg-in"),
            BridgeOperationType::PegOut => write!(f, "Peg-out"),
        }
    }
}

/// Bridge operation record
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct BridgeOperation {
    /// Operation ID
    pub id: String,
    
    /// Operation type
    pub operation_type: BridgeOperationType,
    
    /// Bitcoin transaction ID
    pub btc_txid: Option<String>,
    
    /// RSK transaction ID
    pub rsk_txid: Option<String>,
    
    /// Amount (in satoshis)
    pub amount: u64,
    
    /// Fee (in satoshis)
    pub fee: u64,
    
    /// Source address
    pub from_address: String,
    
    /// Destination address
    pub to_address: String,
    
    /// Creation timestamp
    pub created_at: u64,
    
    /// Completion timestamp
    pub completed_at: Option<u64>,
    
    /// Current status
    pub status: String,
    
    /// Error message (if any)
    pub error: Option<String>,
}

/// Bridge operations interface
#[async_trait]
pub trait BridgeOperations {
    /// Perform a peg-in from Bitcoin to RSK
    async fn peg_in(&self, params: PegInParams) -> Result<String, BridgeError>;
    
    /// Get the status of a peg-in operation
    async fn get_peg_in_status(&self, operation_id: &str) -> Result<PegInStatus, BridgeError>;
    
    /// Perform a peg-out from RSK to Bitcoin
    async fn peg_out(&self, params: PegOutParams) -> Result<String, BridgeError>;
    
    /// Get the status of a peg-out operation
    async fn get_peg_out_status(&self, operation_id: &str) -> Result<PegOutStatus, BridgeError>;
    
    /// List all bridge operations
    async fn list_operations(&self) -> Result<Vec<BridgeOperation>, BridgeError>;
    
    /// Get a specific bridge operation
    async fn get_operation(&self, operation_id: &str) -> Result<Option<BridgeOperation>, BridgeError>;
    
    /// Get the federation address
    fn get_federation_address(&self) -> &str;
    
    /// Get the bridge contract address
    fn get_bridge_contract_address(&self) -> &str;
    
    /// Get the minimum confirmations required
    fn get_min_confirmations(&self) -> u32;
}

/// RSK Bridge implementation
pub struct RskBridge {
    /// Bridge configuration
    config: BridgeConfig,
    
    /// Bitcoin wallet for operations
    bitcoin_wallet: Option<BitcoinWallet>,
    
    /// RSK client for operations
    rsk_client: Arc<RskClient>,
    
    /// Web3 client
    web3: Web3<Http>,
    
    /// Bridge contract
    bridge_contract: Option<Contract<Http>>,
    
    /// Operations store
    operations: Mutex<Vec<BridgeOperation>>,
}

// Bridge contract ABI (simplified)
const BRIDGE_ABI: &[u8] = include_bytes!("../../../assets/bridge_abi.json");

impl RskBridge {
    /// Create a new RSK bridge
    pub async fn new(
        config: BridgeConfig,
        rsk_client: Arc<RskClient>,
        bitcoin_wallet: Option<BitcoinWallet>,
    ) -> Result<Self, BridgeError> {
        // Validate configuration
        if config.federation_address.is_empty() {
            return Err(BridgeError::InvalidConfiguration(
                "Federation address cannot be empty".to_string()
            ));
        }
        
        if config.bridge_contract_address.is_empty() {
            return Err(BridgeError::InvalidConfiguration(
                "Bridge contract address cannot be empty".to_string()
            ));
        }
        
        // Parse federation address to validate
        let network = match config.network {
            NetworkType::Mainnet => Network::Bitcoin,
            NetworkType::Testnet => Network::Testnet,
            NetworkType::Regtest => Network::Regtest,
        };
        
        let _ = BtcAddress::from_str(&config.federation_address)
            .map_err(|e| BridgeError::InvalidConfiguration(
                format!("Invalid federation address: {}", e)
            ))?;
        
        // Create web3 client
        let transport = Http::new(&rsk_client.get_node_url())
            .map_err(|e| BridgeError::Web3Error(format!("Failed to create HTTP transport: {}", e)))?;
        
        let web3 = Web3::new(transport);
        
        // Create bridge contract instance
        let contract_address = Address::from_str(&config.bridge_contract_address)
            .map_err(|e| BridgeError::InvalidConfiguration(
                format!("Invalid bridge contract address: {}", e)
            ))?;
        
        // Parse ABI
        let contract = Contract::from_json(web3.eth(), contract_address, BRIDGE_ABI)
            .map_err(|e| BridgeError::ContractError(format!("Failed to parse contract ABI: {}", e)))?;
        
        Ok(Self {
            config,
            bitcoin_wallet,
            rsk_client,
            web3,
            bridge_contract: Some(contract),
            operations: Mutex::new(Vec::new()),
        })
    }
    
    /// Create a peg-in transaction on the Bitcoin network
    pub async fn create_peg_in_tx(
        &self,
        amount: u64,
        fee_rate: Option<u64>,
    ) -> Result<BtcTransaction, BridgeError> {
        let wallet = self.bitcoin_wallet.as_ref()
            .ok_or_else(|| BridgeError::InvalidConfiguration("Bitcoin wallet not configured".to_string()))?;
            
        // Validate amount
        if amount < self.config.min_peg_in_amount {
            return Err(BridgeError::ValidationError(
                format!("Amount is below minimum: {} < {}", amount, self.config.min_peg_in_amount)
            ));
        }
        
        if let Some(max) = self.config.max_peg_in_amount {
            if amount > max {
                return Err(BridgeError::ValidationError(
                    format!("Amount is above maximum: {} > {}", amount, max)
                ));
            }
        }
        
        // Parse federation address
        let federation_address = BtcAddress::from_str(&self.config.federation_address)
            .map_err(|e| BridgeError::ValidationError(format!("Invalid federation address: {}", e)))?;
            
        // Calculate fee
        let fee_amount = (amount as f64 * self.config.fee_percentage / 100.0) as u64;
        let net_amount = amount - fee_amount;
        
        // In a real implementation, this would use the wallet to create and sign
        // a proper transaction to the federation address
        // For now, return a placeholder
        
        // Create a placeholder transaction for now
        let tx = BtcTransaction {
            version: 2,
            lock_time: 0,
            input: vec![],
            output: vec![],
        };
        
        Ok(tx)
    }
    
    /// Create a peg-out transaction on the RSK network
    pub async fn create_peg_out_tx(
        &self,
        btc_address: &str,
        amount: u64,
        fee: u64,
        gas_limit: Option<u64>,
        gas_price: Option<u64>,
    ) -> Result<web3::types::TransactionRequest, BridgeError> {
        // Parse Bitcoin address to validate it
        let _ = BtcAddress::from_str(btc_address)
            .map_err(|e| BridgeError::ValidationError(format!("Invalid Bitcoin address: {}", e)))?;
            
        // Validate amount
        if amount <= fee {
            return Err(BridgeError::ValidationError(
                format!("Amount must be greater than fee: {} <= {}", amount, fee)
            ));
        }
        
        let contract = self.bridge_contract.as_ref()
            .ok_or_else(|| BridgeError::ContractError("Bridge contract not initialized".to_string()))?;
        
        // Get gas price using the configured strategy if not provided
        let gas_price = gas_price.unwrap_or_else(|| self.get_gas_price());
        
        // Use configured gas limit if not provided
        let gas_limit = gas_limit.unwrap_or(self.config.gas_limit);
        
        // Convert Bitcoin address to bytes
        let btc_address_bytes = btc_address.as_bytes().to_vec();
        
        // In a real implementation, this would call the bridge contract's releaseRBTC function
        // For now, we'll create a placeholder transaction request
        
        // Create a placeholder transaction for now
        let tx = TransactionRequest {
            from: None, // Will be filled by the sender's account
            to: Some(Address::from_str(&self.config.bridge_contract_address)?),
            gas: Some(gas_limit.into()),
            gas_price: Some(gas_price.into()),
            value: Some(amount.into()),
            data: Some(Bytes(vec![])), // Would contain the releaseRBTC function call
            nonce: None,
            condition: None,
        };
        
        Ok(tx)
    }
    
    /// Get gas price based on strategy
    fn get_gas_price(&self) -> u64 {
        match self.config.gas_price_strategy {
            GasPriceStrategy::Low => 1_000_000_000, // 1 Gwei
            GasPriceStrategy::Medium => 5_000_000_000, // 5 Gwei
            GasPriceStrategy::High => 20_000_000_000, // 20 Gwei
            GasPriceStrategy::Custom(price) => price,
        }
    }
    
    /// Check if a Bitcoin transaction is a valid peg-in
    async fn is_valid_peg_in(&self, _tx_id: tx_id: &strstr) -> Result<bool, BridgeError> {
        // In a real implementation, this would verify:
        // 1. The transaction has an output to the federation address
        // 2. The transaction has the correct format for RSK peg-ins
        // 3. The transaction is confirmed with enough confirmations
        // For this placeholder, we'll assume it's valid
        Ok(true)
    }
    
    /// Extract the RSK address from a Bitcoin peg-in transaction
    async fn extract_rsk_address(&self, _tx_id: tx_id: &strstr) -> Result<String, BridgeError> {
        // In a real implementation, this would extract the RSK address from:
        // 1. An OP_RETURN output in the transaction
        // 2. A specific data format in the transaction
        // For this placeholder, return a dummy address
        Ok("0x71c079a19417ce2b8773ca5c290568190ea39a5a".to_string())
    }
    
    /// Process a peg-in on the RSK side
    async fn process_peg_in(&self, btc__tx_id: tx_id: &strstr, rsk_address: &str, amount: u64) -> Result<String, BridgeError> {
        // In a real implementation, this would:
        // 1. Verify the Bitcoin transaction on the RSK bridge
        // 2. Wait for the bridge to process the peg-in
        // 3. Return the RSK transaction ID
        // For this placeholder, return a dummy transaction ID
        Ok("0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef".to_string())
    }
}

#[async_trait]
impl BridgeOperations for RskBridge {
    async fn peg_in(&self, params: PegInParams) -> Result<String, BridgeError> {
        // Validate the RSK address
        if params.rsk_address.is_empty() || !params.rsk_address.starts_with("0x") {
            return Err(BridgeError::ValidationError("Invalid RSK address".to_string()));
        }
        
        // Generate a new operation ID
        let operation_id = Uuid::new_v4().to_string();
        
        let btc_txid = if let Some(txid) = params.btc_tx_id {
            // Verify if this is a valid peg-in transaction
            if !self.is_valid_peg_in(&txid).await? {
                return Err(BridgeError::PegInError("Invalid peg-in transaction".to_string()));
            }
            txid
        } else if let Some(amount) = params.amount {
            // Create a new transaction
            let tx = self.create_peg_in_tx(
                amount,
                params.fee_rate,
            ).await?;
            
            // In a real implementation, this would broadcast the transaction
            // and return the actual txid
            "placeholder_btc_txid".to_string()
        } else {
            return Err(BridgeError::ValidationError(
                "Either btc_tx_id or amount must be provided".to_string()
            ));
        };
        
        // Get the current time
        let now = SystemTime::now()
            .duration_since(UNIX_EPOCH)
            .unwrap_or_default()
            .as_secs();
        
        // Create the operation record
        let operation = BridgeOperation {
            id: operation_id.clone(),
            operation_type: BridgeOperationType::PegIn,
            btc_txid: Some(btc_txid.clone()),
            rsk_txid: None,
            amount: params.amount.unwrap_or(0),
            fee: 0, // Would be calculated based on the actual tx
            from_address: "unknown".to_string(), // Would be extracted from the Bitcoin tx
            to_address: params.rsk_address.clone(),
            created_at: now,
            completed_at: None,
            status: "pending".to_string(),
            error: None,
        };
        
        // Store the operation
        {
            let mut operations = self.operations.lock().await;
            operations.push(operation);
        }
        
        // Start processing the peg-in in the background if requested
        if params.wait_for_confirmations {
            let bridge = self.clone();
            let btc_txid_clone = btc_txid.clone();
            let rsk_address_clone = params.rsk_address.clone();
            let operation_id_clone = operation_id.clone();
            
            tokio::spawn(async move {
                match bridge.process_peg_in(&btc_txid_clone, &rsk_address_clone, params.amount.unwrap_or(0)).await {
                    Ok(rsk_txid) => {
                        // Update the operation with the RSK transaction ID
                        let mut operations = bridge.operations.lock().await;
                        if let Some(op) = operations.iter_mut().find(|op| op.id == operation_id_clone) {
                            op.rsk_txid = Some(rsk_txid);
                            op.status = "processing".to_string();
                        }
                    }
                    Err(e) => {
                        // Update the operation with the error
                        let mut operations = bridge.operations.lock().await;
                        if let Some(op) = operations.iter_mut().find(|op| op.id == operation_id_clone) {
                            op.status = "failed".to_string();
                            op.error = Some(e.to_string());
                        }
                    }
                }
            });
        }
        
        Ok(operation_id)
    }
    
    async fn get_peg_in_status(&self, operation_id: &str) -> Result<PegInStatus, BridgeError> {
        // Find the operation
        let operations = self.operations.lock().await;
        let operation = operations.iter()
            .find(|op| op.id == operation_id)
            .ok_or_else(|| BridgeError::OperationNotFoundError(format!("Operation not found: {}", operation_id)))?;
            
        if operation.operation_type != BridgeOperationType::PegIn {
            return Err(BridgeError::ValidationError(
                format!("Operation is not a peg-in: {}", operation_id)
            ));
        }
        
        // In a real implementation, this would check the actual status
        // of the Bitcoin transaction and the RSK transaction
        
        if let Some(error) = &operation.error {
            return Ok(PegInStatus::Failed {
                btc_txid: operation.btc_txid.clone(),
                error: error.clone(),
            });
        }
        
        if operation.completed_at.is_some() {
            return Ok(PegInStatus::Complete {
                btc_txid: operation.btc_txid.clone().unwrap_or_default(),
                rsk_txid: operation.rsk_txid.clone().unwrap_or_default(),
                credited_amount: operation.amount,
                fee_paid: operation.fee,
            });
        }
        
        if let Some(rsk_txid) = &operation.rsk_txid {
            // Check if the RSK transaction is confirmed
            // For now, we'll use a placeholder
            let confirmations = 1;
            
            if confirmations > 0 {
                return Ok(PegInStatus::WaitingForRskConfirmation {
                    btc_txid: operation.btc_txid.clone().unwrap_or_default(),
                    rsk_txid: rsk_txid.clone(),
                    confirmations,
                });
            } else {
                return Ok(PegInStatus::WaitingForRskProcessing {
                    btc_txid: operation.btc_txid.clone().unwrap_or_default(),
                    rsk_txid: Some(rsk_txid.clone()),
                });
            }
        }
        
        // If we don't have an RSK transaction ID yet, check the Bitcoin transaction
        // For now, we'll use placeholders
        let confirmations = 0;
        let required_confirmations = self.config.min_confirmations;
        
        Ok(PegInStatus::WaitingForBitcoinConfirmation {
            btc_txid: operation.btc_txid.clone().unwrap_or_default(),
            confirmations,
            required_confirmations,
        })
    }
    
    async fn peg_out(&self, params: PegOutParams) -> Result<String, BridgeError> {
        // Validate the Bitcoin address
        let _ = BtcAddress::from_str(&params.btc_address)
            .map_err(|e| BridgeError::ValidationError(format!("Invalid Bitcoin address: {}", e)))?;
            
        // Generate a new operation ID
        let operation_id = Uuid::new_v4().to_string();
        
        // Create the peg-out transaction
        let tx = self.create_peg_out_tx(
            &params.btc_address,
            params.amount,
            params.fee,
            params.gas_limit,
            params.gas_price,
        ).await?;
        
        // In a real implementation, this would:
        // 1. Submit the transaction to the RSK network
        // 2. Wait for it to be confirmed
        // 3. Wait for the federation to create the Bitcoin peg-out transaction
        // For now, we'll use a placeholder
        let rsk_txid = "0xabcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890".to_string();
        
        // Get the current time
        let now = SystemTime::now()
            .duration_since(UNIX_EPOCH)
            .unwrap_or_default()
            .as_secs();
        
        // Create the operation record
        let operation = BridgeOperation {
            id: operation_id.clone(),
            operation_type: BridgeOperationType::PegOut,
            btc_txid: None, // Will be set when the federation creates the Bitcoin tx
            rsk_txid: Some(rsk_txid),
            amount: params.amount,
            fee: params.fee,
            from_address: "0xCurrentWalletAddress".to_string(), // Would be the actual RSK sender
            to_address: params.btc_address.clone(),
            created_at: now,
            completed_at: None,
            status: "pending".to_string(),
            error: None,
        };
        
        // Store the operation
        {
            let mut operations = self.operations.lock().await;
            operations.push(operation);
        }
        
        Ok(operation_id)
    }
    
    async fn get_peg_out_status(&self, operation_id: &str) -> Result<PegOutStatus, BridgeError> {
        // Find the operation
        let operations = self.operations.lock().await;
        let operation = operations.iter()
            .find(|op| op.id == operation_id)
            .ok_or_else(|| BridgeError::OperationNotFoundError(format!("Operation not found: {}", operation_id)))?;
            
        if operation.operation_type != BridgeOperationType::PegOut {
            return Err(BridgeError::ValidationError(
                format!("Operation is not a peg-out: {}", operation_id)
            ));
        }
        
        // In a real implementation, this would check the actual status
        // of the RSK transaction and the Bitcoin transaction
        
        if let Some(error) = &operation.error {
            return Ok(PegOutStatus::Failed {
                rsk_txid: operation.rsk_txid.clone(),
                error: error.clone(),
            });
        }
        
        if operation.completed_at.is_some() {
            return Ok(PegOutStatus::Complete {
                rsk_txid: operation.rsk_txid.clone().unwrap_or_default(),
                btc_txid: operation.btc_txid.clone().unwrap_or_default(),
                received_amount: operation.amount,
                fee_paid: operation.fee,
            });
        }
        
        if let Some(btc_txid) = &operation.btc_txid {
            // Check if the Bitcoin transaction is confirmed
            // For now, we'll use placeholders
            let confirmations = 0;
            let required_confirmations = self.config.min_confirmations;
            
            return Ok(PegOutStatus::WaitingForBitcoinConfirmation {
                rsk_txid: operation.rsk_txid.clone().unwrap_or_default(),
                btc_txid: btc_txid.clone(),
                confirmations,
                required_confirmations,
            });
        }
        
        // If we don't have a Bitcoin transaction ID yet, check the RSK transaction
        // For now, we'll use a placeholder
        let confirmations = 1;
        
        Ok(PegOutStatus::WaitingForRskConfirmation {
            rsk_txid: operation.rsk_txid.clone().unwrap_or_default(),
            confirmations,
        })
    }
    
    async fn list_operations(&self) -> Result<Vec<BridgeOperation>, BridgeError> {
        let operations = self.operations.lock().await;
        Ok(operations.clone())
    }
    
    async fn get_operation(&self, operation_id: &str) -> Result<Option<BridgeOperation>, BridgeError> {
        let operations = self.operations.lock().await;
        Ok(operations.iter()
            .find(|op| op.id == operation_id)
            .cloned())
    }
    
    fn get_federation_address(&self) -> &str {
        &self.config.federation_address
    }
    
    fn get_bridge_contract_address(&self) -> &str {
        &self.config.bridge_contract_address
    }
    
    fn get_min_confirmations(&self) -> u32 {
        self.config.min_confirmations
    }
}

// Methods for cloning (required for async operations)
impl Clone for RskBridge {
    fn clone(&self) -> Self {
        // Create a new HTTP transport
        let transport = Http::new(&self.rsk_client.get_node_url())?;
        let web3 = Web3::new(transport);
        
        // Create a new contract instance
        let contract_address = Address::from_str(&self.config.bridge_contract_address)?;
        let contract = Contract::from_json(web3.eth(), contract_address, BRIDGE_ABI).ok();
        
        Self {
            config: self.config.clone(),
            bitcoin_wallet: self.bitcoin_wallet.clone(),
            rsk_client: self.rsk_client.clone(),
            web3,
            bridge_contract: contract,
            operations: Mutex::new(Vec::new()), // Create a new mutex
        }
    }
}