//! Basic TWS Connection Example
//!
//! This example demonstrates how to establish a basic connection to
//! Interactive Brokers TWS or Gateway.
//!
//! Usage:
//!   cargo run --example basic_connection
//!
//! Prerequisites:
//! - TWS or IB Gateway running on localhost
//! - API connections enabled in TWS settings
//! - Socket port configured (default: 7497 for paper trading)

use data::{init, paper_trading_config, validate_config, InteractiveBrokersAdapter};
use std::time::Duration;
use tokio::time::sleep;
use tracing::{error, info};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
    // Initialize logging
    init()?;
    
    info!("=== Interactive Brokers Basic Connection Example ===");
    
    // Get paper trading configuration
    let config = paper_trading_config();
    
    // Validate configuration
    if let Err(e) = validate_config(&config) {
        error!("Invalid configuration: {}", e);
        return Err(e.into());
    }
    
    info!("Configuration:");
    info!("  Host: {}", config.host);
    info!("  Port: {}", config.port);
    info!("  Client ID: {}", config.client_id);
    info!("  Account ID: {}", config.account_id);
    
    // Create adapter
    let mut adapter = InteractiveBrokersAdapter::new(config);
    
    // Attempt connection
    info!("Connecting to TWS...");
    match adapter.connect().await {
        Ok(()) => {
            info!("✅ Successfully connected to TWS!");
            
            // Check connection state
            let state = adapter.get_connection_state().await;
            info!("Connection state: {:?}", state);
            
            // Keep connection alive for a few seconds
            info!("Maintaining connection for 10 seconds...");
            sleep(Duration::from_secs(10)).await;
            
            // Disconnect cleanly
            info!("Disconnecting from TWS...");
            adapter.disconnect().await?;
            info!("✅ Successfully disconnected from TWS");
        }
        Err(e) => {
            error!("❌ Failed to connect to TWS: {}", e);
            error!("Please ensure:");
            error!("  1. TWS or IB Gateway is running");
            error!("  2. API connections are enabled in settings");
            error!("  3. Socket port is configured correctly");
            error!("  4. Client ID is not already in use");
            return Err(e);
        }
    }
    
    info!("=== Example completed successfully ===");
    Ok(())
}