anya-core 1.2.0

use crate::monitoring::metrics;

/// Validates a Taproot transaction (BIP-341)
pub fn validate_taproot_transaction(tx_bytes: &[u8]) -> bool {
    // Check both key path and script path spending
    let key_path_valid = validate_key_path_spending(tx_bytes);
    let script_path_valid = validate_script_path_spending(tx_bytes);
    
    // Register compliance metrics
    metrics::register_bip_compliance("341", key_path_valid);
    metrics::register_bip_compliance("342", script_path_valid);
    
    key_path_valid && script_path_valid
}

/// Validates key path spending for Taproot
fn validate_key_path_spending(tx_bytes: &[u8]) -> bool {
    // Verify Schnorr signature(s)
    verify_schnorr_signatures(tx_bytes);
    
    // Implementation would validate against Taproot key path rules
    // This is a placeholder - actual implementation would use Bitcoin libraries
    true
}

/// Validates script path spending for Taproot
fn validate_script_path_spending(tx_bytes: &[u8]) -> bool {
    // Verify the script path merkle proof
    verify_merkle_proof(tx_bytes);
    
    // Verify tapscript execution
    verify_tapscript(tx_bytes);
    
    // Implementation would validate against Taproot script path rules
    // This is a placeholder - actual implementation would use Bitcoin libraries
    true
}

/// Verifies Schnorr signatures in transaction
fn verify_schnorr_signatures(tx_bytes: &[u8]) -> bool {
    // Implementation would verify Schnorr signatures
    // This is a placeholder - actual implementation would use Bitcoin libraries
    true
}

/// Verifies merkle proof for script path
fn verify_merkle_proof(tx_bytes: &[u8]) -> bool {
    // Implementation would verify merkle proof
    // This is a placeholder - actual implementation would use Bitcoin libraries
    true
}

/// Verifies tapscript execution
fn verify_tapscript(tx_bytes: &[u8]) -> bool {
    // Implementation would verify tapscript execution
    // This is a placeholder - actual implementation would use Bitcoin libraries
    true
}

#[cfg(test)]
mod tests {
    use super::*;
    
    #[test]
    fn test_taproot_validation() {
        let dummy_tx = vec![0u8; 100]; // Placeholder
        
        // Should pass Taproot validation
        assert!(validate_taproot_transaction(&dummy_tx));
    }
    
    #[test]
    fn test_schnorr_signatures() {
        let dummy_tx = vec![0u8; 100]; // Placeholder
        
        // Should pass Schnorr signature validation
        assert!(verify_schnorr_signatures(&dummy_tx));
    }
    
    #[test]
    fn test_merkle_proof() {
        let dummy_tx = vec![0u8; 100]; // Placeholder
        
        // Should pass merkle proof validation
        assert!(verify_merkle_proof(&dummy_tx));
    }
}