use std::{time::Duration, sync::Arc};
use log::{error};

use rapier2d_f64::prelude::{PhysicsPipeline, RigidBodyHandle};
use starkingdoms_protocol::{ProtocolPlanet, PlanetType};
use tokio::{time::sleep, sync::RwLock};
use crate::{manager::{ClientHandlerMessage, ClientManager, PhysicsData}, SCALE, planet::Planets};

pub async fn timer_main(mgr: ClientManager, physics_data: Arc<RwLock<PhysicsData>>, world_data: Arc<RwLock<Planets>>) {
    let mut pipeline = PhysicsPipeline::new();
    loop {
        sleep(Duration::from_millis(5)).await;

        physics_data.write().await.tick(&mut pipeline);

        for (_addr, client_thread) in mgr.handlers.read().await.iter() {
            match client_thread.tx.send(ClientHandlerMessage::Tick).await {
                Ok(_) => {
                    let player_handles = mgr.players.read().await.values().map(|s| {s.handle}).collect::<Vec<_>>();
                    let data = physics_data.read().await;
                    let mut translations = Vec::new();
                    let mut rotations = Vec::new();
                    for handle in player_handles {
                        let player_body = data.rigid_body_set.get(handle).unwrap();
                        translations.push(player_body.translation());
                        rotations.push(player_body.rotation().angle());
                    }
                    let usernames_raw = mgr.usernames.read().await;
                    let usernames = usernames_raw.values().collect::<Vec<_>>();

                    match client_thread.tx.send(ClientHandlerMessage::PlayersUpdate {
                        rotation: rotations,
                        usernames: usernames.into_iter().map(|s| s.clone()).collect(),
                        x: translations.clone().into_iter().map(|s| { s.x * SCALE}).collect(),
                        y: translations.into_iter().map(|s| { s.y * SCALE}).collect() }).await {
                        Ok(_) => (),
                        Err(e) => {
                            error!("unable to send position packet: {}", e);
                        }
                    };
                    let world = world_data.read().await;
                    let planet_data = world.to_protocol();
                    match client_thread.tx.send(planet_data).await {
                        Ok(_) => (),
                        Err(e) => {
                            error!("unable to send earth packet: {}", e);
                        }
                    };
                }
                Err(e) => {
                    error!("unable to update a client thread: {}", e);
                }
            }
        }
    }
}