use std::{
    net::TcpStream,
    sync::{Arc, Mutex},
};

use bevy_ecs::system::Resource;
use crossbeam::channel::{unbounded, Receiver, Sender};
use starkingdoms_common::packet::{MsgFromError, Packet};
use tungstenite::{connect, stream::MaybeTlsStream, Message, WebSocket};

pub trait PacketMessageConvert {
    fn from_message(value: &Message) -> Result<Packet, MsgFromError>;
    fn into_message(&self) -> Message;
}

impl PacketMessageConvert for Packet {
    fn from_message(value: &Message) -> Result<Packet, MsgFromError> {
        match value {
            Message::Text(s) => serde_json::from_str(s).map_err(MsgFromError::JSONError),
            Message::Binary(b) => serde_json::from_slice(b).map_err(MsgFromError::JSONError),
            Message::Close(_) => Ok(Packet::_SpecialDisconnect {}),
            Message::Frame(_) | Message::Pong(_) | Message::Ping(_) => {
                Err(MsgFromError::InvalidMessageType)
            }
        }
    }
    fn into_message(&self) -> Message {
        Message::Text(
            serde_json::to_string(self)
                .expect("failed to serialize packet to json")
                .into(),
        )
    }
}

#[derive(Resource, Debug)]
pub struct Ws {
    socket: Arc<Mutex<WebSocket<MaybeTlsStream<TcpStream>>>>,
    pub sender: Sender<Packet>,
    pub receiver: Receiver<Packet>,
    packet_receiver: Receiver<Packet>,
}
impl Ws {
    pub fn new() -> Self {
        let (socket, _) = connect("ws://localhost:3000").expect("Failed to connect to server");
        let socket = Arc::new(Mutex::new(socket));
        let (packet_sender, receiver) = unbounded();
        let (sender, packet_receiver) = unbounded();
        let socket_clone = socket.clone();
        std::thread::spawn(move || {
            let socket = socket_clone;
            loop {
                let message = socket
                    .lock()
                    .unwrap()
                    .read()
                    .expect("Failed to reading message");
                let packet = Packet::from_message(&message).expect("Server sent invalid packet");
                packet_sender
                    .send(packet)
                    .expect("Couldn't send packet to server");
            }
        });
        Ws {
            socket,
            sender,
            receiver,
            packet_receiver,
        }
    }
    pub fn send_packet(&mut self, packet: &Packet) {
        self.socket
            .lock()
            .unwrap()
            .send(packet.into_message())
            .expect("Couldn't send packet to server");
    }
}