use anyhow::{Context, Result};
use futures::future::FutureExt;
use tokio::try_join;

use crate::{
    config::ConfigOpts, consul_actor::ConsulActor, fw_actor::FirewallActor, igd_actor::IgdActor,
    stun_actor::StunActor,
};

pub struct Diplonat {
    consul: ConsulActor,
    firewall: FirewallActor,
    igd: Option<IgdActor>,
    stun: StunActor,
}

impl Diplonat {
    pub async fn new() -> Result<Self> {
        let rt_cfg = ConfigOpts::from_env().context("Parse configuration")?;
        println!("{:#?}", rt_cfg);

        let ca = ConsulActor::new(&rt_cfg.consul, &rt_cfg.consul.node_name);

        let fw = FirewallActor::new(
            rt_cfg.firewall.ipv6_only,
            rt_cfg.firewall.refresh_time,
            &ca.rx_open_ports,
        )
        .await
        .context("Setup fireall actor")?;

        let ia = match rt_cfg.igd {
            Some(igdc) => Some(
                IgdActor::new(
                    igdc.private_ip,
                    igdc.refresh_time,
                    igdc.expiration_time,
                    &ca.rx_open_ports,
                )
                .await
                .context("Setup IGD actor")?,
            ),
            None => None,
        };

        let sa = StunActor::new(&rt_cfg.consul, &rt_cfg.stun, &rt_cfg.consul.node_name);

        let ctx = Self {
            consul: ca,
            igd: ia,
            firewall: fw,
            stun: sa,
        };

        Ok(ctx)
    }

    pub async fn listen(&mut self) -> Result<()> {
        let igd_opt = &mut self.igd;

        try_join!(
            self.consul.listen().map(|x| x.context("Run consul actor")),
            async {
                if let Some(igd) = igd_opt {
                    igd.listen().await.context("Run IGD actor")
                } else {
                    Ok(())
                }
            },
            self.firewall
                .listen()
                .map(|x| x.context("Run firewall actor")),
            self.stun.listen().map(|x| x.context("Run STUN actor")),
        )?;

        Ok(())
    }
}