anya-core 1.2.0

Enterprise-grade Bitcoin Infrastructure Platform
Documentation
//! Bitcoin Protocol Implementation [AIR-3][AIS-3][BPC-3][AIT-3]
//!
//! This module implements Bitcoin protocol compliance following the
//! official Bitcoin Improvement Proposals (BIPs) standards.

use serde::{Deserialize, Serialize};
use std::fmt;

pub mod testing;

/// Bitcoin Protocol Compliance Level [BPC-3]
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize, Default)]
pub enum BPCLevel {
    /// No Bitcoin protocol compliance
    None = 0,
    /// Basic Bitcoin protocol compliance
    Basic = 1,
    /// Enhanced Bitcoin protocol compliance with Taproot support
    Enhanced = 2,
    /// Full Bitcoin protocol compliance with all BIPs
    #[default]
    Full = 3,
    /// BPC-3 compliant protocol (highest level)
    BPC3 = 4,
}

impl fmt::Display for BPCLevel {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            BPCLevel::None => write!(f, "None"),
            BPCLevel::Basic => write!(f, "Basic"),
            BPCLevel::Enhanced => write!(f, "Enhanced"),
            BPCLevel::Full => write!(f, "Full"),
            BPCLevel::BPC3 => write!(f, "BPC3"),
        }
    }
}

/// Bitcoin Protocol Validator [BPC-3]
#[derive(Debug, Default, Clone)]
pub struct BitcoinProtocol {
    /// Protocol compliance level
    pub level: BPCLevel,
    /// Supported BIPs
    pub supported_bips: Vec<u32>,
}

impl BitcoinProtocol {
    /// Create a new Bitcoin protocol validator
    pub fn new() -> Self {
        Self {
            level: BPCLevel::Full,
            supported_bips: vec![341, 342, 174, 370, 340], // Taproot, Tapscript, PSBT v1/v2, Schnorr
        }
    }

    /// Validate Bitcoin protocol compliance
    pub fn validate_compliance(&self) -> Result<bool, Box<dyn std::error::Error>> {
        // Basic validation that required BIPs are supported
        let required_bips = vec![341, 342, 174, 340]; // Essential BIPs for BDF v2.5

        for bip in required_bips {
            if !self.supported_bips.contains(&bip) {
                return Err(format!("Missing required BIP-{bip}").into());
            }
        }

        Ok(true)
    }

    /// Get protocol information
    pub fn get_info(&self) -> ProtocolInfo {
        ProtocolInfo {
            level: self.level,
            supported_bips: self.supported_bips.clone(),
            features: vec![
                "Taproot (BIP-341)".to_string(),
                "Tapscript (BIP-342)".to_string(),
                "PSBT v1/v2 (BIP-174/370)".to_string(),
                "Schnorr Signatures (BIP-340)".to_string(),
            ],
        }
    }

    /// Validate a Bitcoin transaction according to protocol rules
    pub fn validate_transaction(
        &self,
        tx: &bitcoin::Transaction,
    ) -> Result<(), crate::bitcoin::error::BitcoinError> {
        // Basic transaction validation - placeholder implementation
        if tx.output.is_empty() {
            return Err(crate::bitcoin::error::BitcoinError::ValidationError(
                "Transaction has no outputs".to_string(),
            ));
        }

        // Additional validation logic would go here
        Ok(())
    }

    /// Check if Taproot is enabled for this protocol instance
    pub fn is_taproot_enabled(&self) -> bool {
        self.supported_bips.contains(&341) // BIP-341 is Taproot
    }

    /// Get the current protocol level
    pub fn get_level(&self) -> BPCLevel {
        self.level
    }
}

/// Protocol information structure
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ProtocolInfo {
    pub level: BPCLevel,
    pub supported_bips: Vec<u32>,
    pub features: Vec<String>,
}