anya-core 1.2.0

use std::error::Error;
use anyhow::{Context, Result};
use bitcoin::blockdata::transaction::Transaction;
use bitcoin::consensus::encode::deserialize;
use bitcoin_protocol::{BIP341Validator, PSBTValidator};
use std::net::{SocketAddr, TcpStream};
use std::time::Duration;
use serde::{Deserialize, Serialize};
use super::modes::BitcoinConfig;

/// Enterprise cluster manager with BIP compliance
pub struct EnterpriseClusterManager {
    license_key: String,
    cluster_url: String,
    psbt_contract: Option<Transaction>,
    bitcoin_config: BitcoinConfig,
    nodes: Vec<ClusterNode>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ClusterNode {
    pub address: SocketAddr,
    pub version: String,
    pub supported_bips: Vec<u32>,
    pub taproot_active: bool,
}

impl EnterpriseClusterManager {
    /// Initialize new cluster manager with protocol validation
    pub fn new(
        license_key: String,
        cluster_url: String,
        psbt_contract: Option<Transaction>,
        bitcoin_config: BitcoinConfig
    ) -> Result<Self> {
        // Validate PSBT contract structure
        if let Some(contract) = &psbt_contract {
            PSBTValidator::validate_contract(contract)
                .context("Invalid PSBT contract structure")?;
        }
        
        Ok(Self {
            license_key,
            cluster_url,
            psbt_contract,
            bitcoin_config,
            nodes: Vec::new(),
        })
    }

    /// Connect to cluster with BIP-174 compliance checks
    pub async fn connect(&mut self) -> Result<()> {
        self.validate_license().await?;
        self.discover_nodes().await?;
        self.validate_cluster_protocol().await
    }

    async fn validate_license(&self) -> Result<()> {
        // Implementation for license validation
        // ...
        Ok(())
    }

    async fn discover_nodes(&mut self) -> Result<()> {
        // Implementation for node discovery
        // ...
        Ok(())
    }

    async fn validate_cluster_protocol(&self) -> Result<()> {
        // Verify all nodes meet BIP requirements
        for node in &self.nodes {
            if !node.supported_bips.iter().all(|bip| self.bitcoin_config.required_bips.contains(bip)) {
                anyhow::bail!("Node {} missing required BIPs", node.address);
            }
            
            if self.bitcoin_config.taproot_enabled && !node.taproot_active {
                anyhow::bail!("Node {} lacks Taproot support (BIP-341)", node.address);
            }
        }
        
        Ok(())
    }

    /// Execute PSBT contract with cluster validation
    pub async fn execute_contract(&self) -> Result<()> {
        let contract = self.psbt_contract.as_ref()
            .context("No PSBT contract configured")?;

        // Validate against current network rules
        BIP341Validator::validate_transaction(contract)
            .context("Transaction failed Taproot validation")?;

        // Broadcast to cluster nodes
        self.broadcast_transaction(contract).await
    }

    async fn broadcast_transaction(&self, tx: &Transaction) -> Result<()> {
        let raw_tx = hex::encode(serialize(tx));
        
        for node in &self.nodes {
            self.send_to_node(node.address, &raw_tx).await?;
        }
        
        Ok(())
    }

    async fn send_to_node(&self, addr: SocketAddr, raw_tx: &str) -> Result<()> {
        // Implementation for node communication
        // ...
        Ok(())
    }

    /// Cluster health check with protocol monitoring
    pub async fn health_check(&self) -> Result<ClusterHealth> {
        let mut health = ClusterHealth::default();
        
        for node in &self.nodes {
            let status = self.check_node_health(node).await;
            health.nodes.push(status);
            
            if status.latency > health.max_latency {
                health.max_latency = status.latency;
            }
        }
        
        Ok(health)
    }

    async fn check_node_health(&self, node: &ClusterNode) -> NodeHealth {
        // Implementation for node health checking
        // ...
        NodeHealth {
            address: node.address,
            responsive: true,
            block_height: 0,
            latency: 0,
            protocol_compliant: true,
        }
    }
}

#[derive(Debug, Default, Serialize, Deserialize)]
pub struct ClusterHealth {
    pub nodes: Vec<NodeHealth>,
    pub max_latency: u64,
    pub min_protocol_compliance: f64,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct NodeHealth {
    pub address: SocketAddr,
    pub responsive: bool,
    pub block_height: u64,
    pub latency: u64,
    pub protocol_compliant: bool,
}

/// PSBT validation utilities
mod psbt_validation {
    use super::*;
    
    pub fn validate_psbt_structure(psbt: &[u8]) -> Result<()> {
        let tx: Transaction = deserialize(psbt)
            .context("Invalid PSBT serialization")?;
            
        PSBTValidator::validate_contract(&tx)
    }
}

/// BIP-341 validation extension
trait TaprootValidator {
    fn validate_taproot(&self) -> Result<()>;
}

impl TaprootValidator for Transaction {
    fn validate_taproot(&self) -> Result<()> {
        BIP341Validator::validate_transaction(self)
    }
}