mod options;
mod utils;

use clap::Parser;
use log::{error, info};
use options::config::*;
use options::logger::setup_logger;
use options::signals::set_valid_destructor;
use options::structs::Processes;
use options::cli_pipeline::init_cli_pipeline;
use std::sync::Arc;
use std::time::Duration;
use tokio::sync::mpsc;
use utils::*;
use options::preboot::PrebootParams;
use tokio::sync::{broadcast, oneshot};
use options::config::v2::init_config_mechanism;
use utils::v2::init_monitoring;

#[tokio::main(flavor = "multi_thread", worker_threads = 4)]
async fn main() -> anyhow::Result<()>{
    let preboot = Arc::new(PrebootParams::parse().validate()?);

    let _ = setup_logger();

    info!("Noxis is configurating...");
    // 
    let (tx_brd, mut rx_brd) = broadcast::channel::<Processes>(1);
    // cli <-> config
    let (tx_oneshot, rx_oneshot) = oneshot::channel::<Processes>();
    let mut handler: Vec<tokio::task::JoinHandle<()>> = vec![];

    // initilaizing task for config manipulations 
    let config_module = tokio::spawn(async move {
        let _ = init_config_mechanism(
            rx_oneshot,
            tx_brd,
            preboot.clone()
        ).await;
    });
    handler.push(config_module);
    
    // initilaizing task for cli manipulation 
    let cli_module = tokio::spawn(async move {
        if let Err(er) = init_cli_pipeline().await {
            error!("CLI pipeline failed due to {}", er)
        }
    }); 
    handler.push(cli_module);

    // initilaizing task for deinitializing `Noxis`
    let ctrlc = tokio::spawn(async move {
        if let Err(er) = set_valid_destructor(vec![].into()).await {
            error!("Destructor mod failed due to {}", er);
        }
        std::process::exit(0);
    });
    handler.push(ctrlc);

    let monitoring = tokio::spawn(async move {
        let config = {
            let mut tick = tokio::time::interval(Duration::from_millis(500));
            loop {
                tick.tick().await;
                break match rx_brd.try_recv() {
                    Ok(conf) => conf,
                    Err(_) => continue,
                }
            }
        };
        if let Err(er) = init_monitoring(config).await {
            error!("Monitoring mod failed due to {}", er);
        }
    });
    handler.push(monitoring);

    for i in handler {
        let _ = i.await;
    }

    // setting up redis connection \
    // then conf checks to choose the most actual \
    // let processes: Processes = get_actual_config(preboot.clone()).await.unwrap_or_else(|| {
    //     error!("No actual configuration for runner. Stopping...");
    //     std::process::exit(1);
    // });
    //
    // info!(
    //     "Current runner configuration: {}",
    //     &processes.date_of_creation
    // );
    // info!("Runner is ready. Initializing...");
    //
    // if processes.processes.is_empty() {
    //     error!("Processes list is null, runner-rs initialization is stopped");
    //     return Err(Error::msg("Empty processes segment in config"));
    // }
    // let mut handler: Vec<tokio::task::JoinHandle<()>> = vec![];
    // // is in need to send to the signals handler thread
    // let mut senders: Vec<Arc<mpsc::Sender<u8>>> = vec![];
    //
    // for proc in processes.processes.iter() {
    //     info!(
    //         "Process '{}' on stage: {}. Depends on {} file(s), {} service(s)",
    //         proc.name,
    //         proc.path,
    //         proc.dependencies.files.len(),
    //         proc.dependencies.services.len()
    //     );
    //
    //     // creating msg channel
    //     // can or should be executed in new thread
    //     let (tx, mut rx) = mpsc::channel::<u8>(1);
    //     let proc = Arc::new(proc.clone());
    //     let tx = Arc::new(tx.clone());
    //
    //     senders.push(Arc::clone(&tx.clone()));
    //
    //     let event = tokio::spawn(async move {
    //         run_daemons(proc.clone(), tx.clone(), &mut rx).await;
    //     });
    //     handler.push(event);
    // }
    //
    // // destructor addition
    // handler.push(tokio::spawn(async move {
    //     if set_valid_destructor(Arc::new(senders)).await.is_err() {
    //         error!("Linux signals handler creation failed. Terminating main thread...");
    //         return;
    //     }
    //
    //     tokio::time::sleep(Duration::from_millis(200)).await;
    //     info!("End of job. Terminating main thread...");
    //     std::process::exit(0);
    // }));
    //
    // // remote config update subscription
    // handler.push(tokio::spawn(async move {
    //     let _ = subscribe_config_stream(Arc::new(processes), preboot.clone()).await;
    // }));
    //
    // // cli pipeline
    // handler.push(tokio::spawn(async move {
    //     let _ = init_cli_pipeline().await;
    // }));
    //
    // for i in handler {
    //     let _ = i.await;
    // }
    Ok(())
}

// todo: integration tests
// todo: config pulling mechanism rework (socket)
// todo: tasks management after killing all processes
// todo: