use actor_system::spawn_sync_runner;
use clap::Parser;
use log::{error, info};
use tokio::sync::mpsc;

mod engine;
use engine::create_osis_engine;

#[derive(Parser, Debug)]
#[command(author, version, about, long_about = None)]
struct Args {
    /// Runner ID
    runner_id: String,

    /// Database path
    #[arg(short, long, default_value = "/tmp/osis.db")]
    db_path: String,

    /// Redis URL
    #[arg(short = 'r', long, default_value = "redis://localhost:6379")]
    redis_url: String,

    /// Preserve tasks after completion
    #[arg(short, long, default_value_t = false)]
    preserve_tasks: bool,
}

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
    // Initialize logging
    env_logger::init();

    let args = Args::parse();

    info!("Starting OSIS Sync Runner with ID: {}", args.runner_id);
    info!("Database path: {}", args.db_path);
    info!("Redis URL: {}", args.redis_url);
    info!("Preserve tasks: {}", args.preserve_tasks);

    // Create shutdown channel
    let (shutdown_tx, shutdown_rx) = mpsc::channel::<()>(1);

    // Setup signal handling for graceful shutdown
    let shutdown_tx_clone = shutdown_tx.clone();
    tokio::spawn(async move {
        tokio::signal::ctrl_c().await.expect("Failed to listen for ctrl+c");
        info!("Received Ctrl+C, initiating shutdown...");
        let _ = shutdown_tx_clone.send(()).await;
    });

    // Spawn the sync runner with engine factory
    let runner_handle = spawn_sync_runner(
        args.runner_id.clone(),
        args.db_path,
        args.redis_url,
        shutdown_rx,
        args.preserve_tasks,
        create_osis_engine,
    );

    info!("OSIS Sync Runner '{}' started successfully", args.runner_id);

    // Wait for the runner to complete
    match runner_handle.await {
        Ok(Ok(())) => {
            info!("OSIS Sync Runner '{}' shut down successfully", args.runner_id);
        }
        Ok(Err(e)) => {
            error!("OSIS Sync Runner '{}' encountered an error: {}", args.runner_id, e);
            return Err(e);
        }
        Err(e) => {
            error!("Failed to join OSIS Sync Runner '{}' task: {}", args.runner_id, e);
            return Err(Box::new(e));
        }
    }

    Ok(())
}