use log::warn;
use libpso::packet::ship::*;
use libpso::packet::messages::*;
use crate::entity::gateway::EntityGateway;
use crate::common::serverstate::ClientId;
use crate::ship::ship::{SendShipPacket, ShipError, Rooms, Clients};
use crate::ship::location::{ClientLocation, ClientLocationError, RoomLobby};
use crate::ship::map::{MapArea};
use crate::ship::items::{ItemManager, ClientItemId};

pub fn request_exp(id: ClientId,
                   request_exp: &RequestExp,
                   client_location: &ClientLocation,
                   rooms: &Rooms)
                   -> Box<dyn Iterator<Item = (ClientId, SendShipPacket)> + Send> {
    
    match client_location.get_area(id).unwrap() {
        RoomLobby::Room(room) => {
            let r  = rooms[room.0].as_ref().unwrap();
            warn!("killed a {:?}", r.maps.enemy_by_id(request_exp.enemy_id as usize).unwrap().monster);
        },
        _ => {}
    };
    Box::new(None.into_iter())
}

pub fn player_drop_item<EG>(id: ClientId,
                            player_drop_item: &PlayerDropItem,
                            entity_gateway: &mut EG,
                            client_location: &ClientLocation,
                            clients: &mut Clients,
                            rooms: &mut Rooms,
                            item_manager: &mut ItemManager)
                            -> Result<Box<dyn Iterator<Item = (ClientId, SendShipPacket)> + Send>, ShipError>
where
    EG: EntityGateway
{
    let client = clients.get_mut(&id).ok_or(ShipError::ClientNotFound(id))?;
    let room_id = client_location.get_room(id).map_err(|err| -> ClientLocationError { err.into() })?;
    let room = rooms.get_mut(room_id.0)
        .ok_or_else(|| ShipError::InvalidRoom(room_id.0 as u32))?
        .as_mut()
        .ok_or_else(|| ShipError::InvalidRoom(room_id.0 as u32))?;
    let area = MapArea::from_value(&room.mode.episode(), player_drop_item.area as u32)?;
    let item = item_manager.get_inventory_item_by_id(&client.character, ClientItemId(player_drop_item.item_id))?;
    item_manager.player_drop_item_on_shared_floor(entity_gateway, &client.character, item, (area, player_drop_item.x, player_drop_item.y, player_drop_item.z))?;
    let clients_in_area = client_location.get_clients_in_room(room_id).map_err(|err| -> ClientLocationError { err.into() })?;
    let pdi = player_drop_item.clone();
    Ok(Box::new(clients_in_area.into_iter()
                .map(move |c| {
                    (c.client, SendShipPacket::Message(Message::new(GameMessage::PlayerDropItem2(pdi.clone()))))
                })))
}