use std::env;
use std::error::Error;
use std::io::Write;
use std::sync::Arc;

use ::zbus::export::futures_util::lock::Mutex;
use ::zbus::Connection;
use asusd::config::Config;
use asusd::ctrl_anime::config::AnimeConfig;
use asusd::ctrl_anime::trait_impls::CtrlAnimeZbus;
use asusd::ctrl_anime::CtrlAnime;
use asusd::ctrl_aura::controller::CtrlKbdLed;
use asusd::ctrl_aura::trait_impls::CtrlAuraZbus;
use asusd::ctrl_fancurves::CtrlFanCurveZbus;
use asusd::ctrl_platform::CtrlPlatform;
use asusd::{print_board_info, CtrlTask, Reloadable, ZbusRun, DBUS_NAME};
use config_traits::{StdConfig, StdConfigLoad2, StdConfigLoad3};
use log::{error, info, warn};
use rog_aura::aura_detection::LaptopLedData;
use zbus::SignalContext;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let mut logger = env_logger::Builder::new();
    logger
        .parse_default_env()
        .target(env_logger::Target::Stdout)
        .format(|buf, record| writeln!(buf, "{}: {}", record.level(), record.args()))
        .init();

    let is_service = match env::var_os("IS_SERVICE") {
        Some(val) => val == "1",
        None => false,
    };

    if !is_service {
        println!("asusd schould be only run from the right systemd service");
        println!(
            "do not run in your terminal, if you need an logs please use journalctl -b -u asusd"
        );
        println!("asusd will now exit");
        return Ok(());
    }

    info!("       daemon v{}", asusd::VERSION);
    info!("    rog-anime v{}", rog_anime::VERSION);
    info!("     rog-aura v{}", rog_aura::VERSION);
    info!(" rog-profiles v{}", rog_profiles::VERSION);
    info!("rog-platform v{}", rog_platform::VERSION);

    start_daemon().await?;
    Ok(())
}

/// The actual main loop for the daemon
async fn start_daemon() -> Result<(), Box<dyn Error>> {
    // let supported = SupportedFunctions::get_supported();
    print_board_info();
    // println!("{:?}", supported.supported_functions());

    // Start zbus server
    let mut connection = Connection::system().await?;

    let config = Config::new().load();
    let cfg_path = config.file_path();
    let config = Arc::new(Mutex::new(config));

    // supported.add_to_server(&mut connection).await;

    match CtrlFanCurveZbus::new() {
        Ok(ctrl) => {
            let sig_ctx = CtrlFanCurveZbus::signal_context(&connection)?;
            start_tasks(ctrl, &mut connection, sig_ctx).await?;
        }
        Err(err) => {
            error!("FanCurves: {}", err);
        }
    }

    match CtrlPlatform::new(
        config.clone(),
        &cfg_path,
        CtrlPlatform::signal_context(&connection)?,
    ) {
        Ok(ctrl) => {
            let sig_ctx = CtrlPlatform::signal_context(&connection)?;
            start_tasks(ctrl, &mut connection, sig_ctx).await?;
        }
        Err(err) => {
            error!("CtrlPlatform: {}", err);
        }
    }

    match CtrlAnime::new(AnimeConfig::new().load()) {
        Ok(ctrl) => {
            let zbus = CtrlAnimeZbus(Arc::new(Mutex::new(ctrl)));
            let sig_ctx = CtrlAnimeZbus::signal_context(&connection)?;
            start_tasks(zbus, &mut connection, sig_ctx).await?;
        }
        Err(err) => {
            info!("AniMe control: {}", err);
        }
    }

    let laptop = LaptopLedData::get_data();
    // CtrlKbdLed deviates from the config pattern above due to requiring a keyboard
    // detection first
    match CtrlKbdLed::new(laptop) {
        Ok(ctrl) => {
            let mut zbus = CtrlAuraZbus(Arc::new(Mutex::new(ctrl)), None);
            let sig_ctx = CtrlAuraZbus::signal_context(&connection)?;
            zbus.1 = Some(sig_ctx);
            let sig_ctx = CtrlAuraZbus::signal_context(&connection)?;
            start_tasks(zbus, &mut connection, sig_ctx).await?;
        }
        Err(err) => {
            error!("Keyboard control: {}", err);
        }
    }

    // Request dbus name after finishing initalizing all functions
    connection.request_name(DBUS_NAME).await?;

    loop {
        // This is just a blocker to idle and ensure the reator reacts
        connection.executor().tick().await;
    }
}

async fn start_tasks<T>(
    mut zbus: T,
    connection: &mut Connection,
    signal_ctx: SignalContext<'static>,
) -> Result<(), Box<dyn Error>>
where
    T: ZbusRun + Reloadable + CtrlTask + Clone,
{
    let task = zbus.clone();

    zbus.reload()
        .await
        .unwrap_or_else(|err| warn!("Controller error: {}", err));
    zbus.add_to_server(connection).await;

    task.create_tasks(signal_ctx).await.ok();
    Ok(())
}