/*
    Hurry Curry! - a game about cooking
    Copyright 2024 metamuffin

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, version 3 of the License only.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.

*/
pub mod bot;
pub mod conveyor;
pub mod customers;
pub mod environment_effect;
pub mod item_portal;
pub mod player_portal;

use crate::data::ItemTileRegistry;
use anyhow::{anyhow, Result};
use conveyor::Conveyor;
use customers::Customers;
use environment_effect::{EnvironmentController, EnvironmentEffect, EnvironmentEffectController};
use hurrycurry_client_lib::Game;
use hurrycurry_protocol::{
    glam::{IVec2, Vec2},
    PacketC, PacketS,
};
use item_portal::ItemPortal;
use player_portal::PlayerPortal;
use serde::{Deserialize, Serialize};
use std::collections::VecDeque;

pub type DynEntity = Box<dyn Entity + Send + Sync + 'static>;
pub type Entities = Vec<DynEntity>;

pub struct EntityContext<'a> {
    pub game: &'a mut Game,
    pub packet_out: &'a mut VecDeque<PacketC>,
    pub packet_in: &'a mut VecDeque<PacketS>,
    pub score_changed: &'a mut bool,
    pub dt: f32,
}

pub trait Entity {
    fn tick(&mut self, c: EntityContext<'_>) -> Result<()>;
    fn destructor(&mut self, _c: EntityContext<'_>) {}
}

// macro_rules! entities {
//     ($($e:ident),*) => {
//         #[derive(Debug)]
//         pub enum Entity { $($e($e)),* }
//         impl EntityT for Entity {
//             fn tick(&mut self, c: EntityContext<'_>) -> Result<()> {
//                 match self { $(Entity::$e(x) => x.tick(c)),*, }
//             }
//             fn destructor(&mut self, c: EntityContext<'_>) {
//                 match self { $(Entity::$e(x) => x.destructor(c)),*, }
//             }
//         }
//     };
// }
// entities!(
//     Conveyor,
//     ItemPortal,
//     PlayerPortal,
//     Customers,
//     EnvironmentEffectController,
//     EnvironmentController
// );

#[derive(Debug, Clone, Deserialize, Serialize)]
#[serde(rename_all = "snake_case")]
pub enum EntityDecl {
    Conveyor {
        from: Option<IVec2>,
        to: Option<IVec2>,
        filter_dir: Option<IVec2>,
        filter: Option<String>,
        dir: Option<IVec2>,
        speed: Option<f32>,
    },
    ItemPortal {
        from: Option<IVec2>,
        to: IVec2,
    },
    PlayerPortal {
        from: Option<Vec2>,
        to: Vec2,
    },
    Customers {},
    EnvironmentEffect(EnvironmentEffect),
    Environment(Vec<String>),
}

pub fn construct_entity(
    pos: Option<IVec2>,
    decl: &EntityDecl,
    reg: &ItemTileRegistry,
) -> Result<DynEntity> {
    Ok(match decl.to_owned() {
        EntityDecl::ItemPortal { from, to } => Box::new(ItemPortal {
            from: from.or(pos).ok_or(anyhow!("no item portal start"))?,
            to,
        }),
        EntityDecl::PlayerPortal { from, to } => Box::new(PlayerPortal {
            from: from
                .or(pos.map(|v| v.as_vec2()))
                .ok_or(anyhow!("no player portal start"))?,
            to,
        }),
        EntityDecl::Conveyor {
            from,
            to,
            speed,
            dir,
            filter,
            filter_dir,
        } => {
            let from = from.or(pos).ok_or(anyhow!("conveyor has no start"))?;
            let to = to
                .or(dir.map(|s| s + from))
                .ok_or(anyhow!("conveyor has no destination"))?;
            Box::new(Conveyor {
                from,
                to,
                max_cooldown: 1. / speed.unwrap_or(2.),
                filter_tile: filter_dir.map(|o| to + o),
                filter_item: filter.map(|name| reg.register_item(name)),
                cooldown: 0.,
            })
        }
        EntityDecl::Customers {} => Box::new(Customers::new()?),
        EntityDecl::EnvironmentEffect(config) => Box::new(EnvironmentEffectController::new(config)),
        EntityDecl::Environment(names) => Box::new(EnvironmentController(names)),
    })
}