anya-core 1.2.0

/// Lightning Network Demo
///
/// This program demonstrates the Lightning Network functionality
/// provided by the anya-core library, including node operations,
/// channel management, and payment processing.
use std::error::Error;
use std::sync::Arc;

use anya_core::bitcoin::config::BitcoinConfig;
use anya_core::bitcoin::lightning::{BitcoinLightningBridge, LightningNode};
use anya_core::{AnyaConfig, AnyaCore};
use std::thread;
use std::time::Duration;

fn main() -> Result<(), Box<dyn Error>> {
    println!("===================================================");
    println!("⚡ Anya Core Lightning Network Demonstration");
    println!("===================================================");

    // Initialize with default configuration
    let config = AnyaConfig::default();

    // Create the Anya Core instance
    let anya = AnyaCore::new(config)?;

    // Check if the system is operational
    if !anya.is_operational() {
        println!("   Warning: Anya Core is not fully operational");
    } else {
        println!("   Anya Core system initialized successfully");
    }

    // Step 1: Create a mock Lightning node for demonstration
    println!("\n1. Creating Lightning Network demonstration...");
    println!("   Note: This is a simplified demonstration of Lightning Network concepts");

    // Create Bitcoin configuration for Lightning
    let bitcoin_config = BitcoinConfig {
        enabled: true,
        network: "testnet".to_string(),
        rpc_url: Some("http://127.0.0.1:18332".to_string()),
        auth: None,
        min_confirmations: 6,
        default_fee_rate: 10,
        wallet_path: None,
    };

    // Create Lightning node instance
    println!("\n2. Creating Lightning node...");
    let lightning_node = match LightningNode::new(&bitcoin_config) {
        Ok(node) => {
            println!("   Lightning node created successfully");
            Arc::new(node)
        }
        Err(e) => {
            println!("   Error creating Lightning node: {e:?}");
            return Err(e.into());
        }
    };

    // Create a lightning bridge instance
    println!("\n3. Creating Bitcoin-Lightning bridge...");
    let bridge_result = BitcoinLightningBridge::new(lightning_node);
    let bridge = match bridge_result {
        Ok(bridge) => {
            println!("   Bridge created successfully");
            bridge
        }
        Err(e) => {
            println!("   Error creating bridge: {e:?}");
            return Err(e.into());
        }
    };

    // Step 4: Initialize the bridge
    println!("\n4. Initializing bridge...");
    let current_height = 750000; // Example block height
    match bridge.init(current_height) {
        Ok(_) => println!("   Bridge initialized at block height {current_height}"),
        Err(e) => println!("   Error initializing bridge: {e:?}"),
    }

    // Step 5: Demonstrate Lightning Network concepts
    println!("\n5. Lightning Network Demonstration Concepts:");
    println!("   - Lightning channels enable instant, low-fee Bitcoin transactions");
    println!("   - Channels are opened with on-chain Bitcoin transactions");
    println!("   - Payments are routed through the Lightning Network");
    println!("   - Channels can be closed to settle on the Bitcoin blockchain");

    // Step 6: Simulate channel operations
    println!("\n5. Simulating Lightning Network operations...");
    let peer_pubkey = "02eec7245d6b7d2ccb30380bfbe2a3648cd7a942653f5aa340edcea1f283686619";

    // Simulate creating a funding address
    println!("\n6. Creating funding address for channel...");
    match bridge.create_funding_address(peer_pubkey, 100_000, None, false) {
        Ok(address) => {
            println!("   Created funding address: {address}");
            println!("   Send 100,000 sats to this address to open a channel");
        }
        Err(e) => println!("   Error creating funding address: {e:?}"),
    }

    // Step 7: Demonstrate conceptual Lightning operations
    println!("\n7. Lightning Network Concepts Demonstration:");
    println!("   In a real Lightning implementation:");
    println!("   - Nodes would connect to peers on the Lightning Network");
    println!("   - Channels would be opened with real Bitcoin transactions");
    println!("   - Invoices would be created and paid instantly");
    println!("   - Routing would find paths through the network");

    // Step 8: Simulate channel management
    println!("\n8. Channel Management Simulation:");
    println!("   - Opening channel with peer {peer_pubkey}");
    println!("   - Channel capacity: 100,000 sats");
    println!("   - Local balance: 80,000 sats");
    println!("   - Remote balance: 20,000 sats");
    println!("   - Channel is active and ready for payments");

    // Step 9: Simulate payment operations
    println!("\n9. Payment Operations Simulation:");
    println!("   - Invoice created for 50,000 msats");
    println!("   - Payment hash: abc123def456");
    println!("   - Description: Demo payment");
    println!("   - Payment routed successfully");
    println!("   - Fee: 100 msats");

    // Step 10: Monitor simulation
    println!("\n10. Monitoring Lightning Network...");
    println!("   Simulating network monitoring for 3 seconds...");
    thread::sleep(Duration::from_secs(3));
    println!("   - Network status: Healthy");
    println!("   - Active channels: 1");
    println!("   - Pending HTLCs: 0");

    // Step 11: List channel transactions
    println!("\n11. Channel Transaction Management:");
    match bridge.list_channel_transactions() {
        Ok(txs) => {
            println!("   Found {} channel transactions:", txs.len());
            for tx in txs {
                println!("   - Channel ID: {}", tx.channel_id);
                println!("     Funding txid: {:?}", tx.funding_txid);
                println!("     Status: {:?}", tx.status);
                if let Some(txid) = tx.closing_txid {
                    println!("     Closing txid: {txid:?}");
                }
            }
        }
        Err(e) => println!("   Error listing channel transactions: {e:?}"),
    }

    // Step 12: Cleanup
    println!("\n12. Cleanup and Summary:");
    println!("   This demonstration showed the conceptual Lightning Network flow:");
    println!("   ✓ Bridge initialization");
    println!("   ✓ Funding address creation");
    println!("   ✓ Channel concepts");
    println!("   ✓ Payment concepts");
    println!("   ✓ Transaction management");
    println!("   Lightning Network enables instant Bitcoin micropayments!");

    println!("\n===================================================");
    println!("⚡ Lightning Network Demonstration Completed!");
    println!("===================================================");

    Ok(())
}