use super::Entity;
use crate::{
    data::Gamedata,
    game::{interact_effect, Tile},
    protocol::{ItemLocation, PacketC},
};
use anyhow::{anyhow, Result};
use glam::IVec2;
use std::collections::{HashMap, VecDeque};

#[derive(Debug, Default)]
pub struct Conveyor {
    pub(super) from: IVec2,
    pub(super) to: IVec2,
    pub(super) cooldown: f32,
    pub(super) max_cooldown: f32,
}

impl Entity for Conveyor {
    fn tick(
        &mut self,
        data: &Gamedata,
        points: &mut i64,
        packet_out: &mut VecDeque<PacketC>,
        tiles: &mut HashMap<IVec2, Tile>,
        dt: f32,
    ) -> Result<()> {
        let [from, to] = tiles
            .get_many_mut([&self.from, &self.to])
            .ok_or(anyhow!("conveyor does ends in itself"))?;

        if from.item.is_some() {
            self.cooldown += dt;
            if self.cooldown < self.max_cooldown {
                return Ok(());
            }
            self.cooldown = 0.;

            interact_effect(
                data,
                true,
                &mut to.item,
                ItemLocation::Tile(self.to),
                &mut from.item,
                ItemLocation::Tile(self.from),
                Some(to.kind),
                packet_out,
                points,
            );
        }

        Ok(())
    }
}