use async_std::sync::{Arc, RwLock};
use libpso::packet::ship::*;
use libpso::packet::login::RedirectClient;
use crate::common::serverstate::ClientId;
use crate::common::interserver::Ship;
use crate::ship::ship::{SendShipPacket, ShipError};
use crate::ship::packet::builder;

pub async fn ship_list(id: ClientId, ship_list: &Arc<RwLock<Vec<Ship>>>) -> Vec<(ClientId, SendShipPacket)> {
    let ship_list = ship_list
        .read()
        .await
        .clone();
    vec![(id, SendShipPacket::ShipList(builder::ship::ship_list(&ship_list)))]
}

pub fn block_list(id: ClientId, shipname: &str, num_blocks: usize) -> Vec<(ClientId, SendShipPacket)> {
    vec![(id, SendShipPacket::ShipBlockList(ShipBlockList::new(shipname, num_blocks)))]
}

pub async fn selected_ship(id: ClientId, menuselect: MenuSelect, ship_list: &Arc<RwLock<Vec<Ship>>>)
                           -> Result<Vec<(ClientId, SendShipPacket)>, ShipError> {
    let (ip, port) = ship_list
        .read()
        .await
        .get(menuselect.item as usize)
        .map(|ship| {
            (u32::from_ne_bytes(ship.ip.octets()), ship.port)
        })
        .ok_or_else(|| ShipError::InvalidShip(menuselect.item as usize))?;
    Ok(vec![(id, SendShipPacket::RedirectClient(RedirectClient::new(ip, port)))])
}