/*
    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/>.

*/
use bincode::{
    config::{standard, Configuration, Limit, LittleEndian, Varint},
    Decode, Encode,
};
use glam::{IVec2, Vec2};
use serde::{Deserialize, Serialize};
use std::{
    collections::{HashMap, HashSet},
    fmt::Display,
};

pub use glam;

pub mod movement;

pub const VERSION: (u32, u32) = (4, 0);

pub const BINCODE_CONFIG: Configuration<LittleEndian, Varint, Limit<4096>> =
    standard().with_limit();

#[derive(
    Debug, Clone, Copy, Serialize, Deserialize, Encode, Decode, PartialEq, Eq, PartialOrd, Ord, Hash,
)]
#[serde(transparent)]
pub struct PlayerID(pub i64);

#[derive(
    Debug, Clone, Copy, Serialize, Deserialize, Encode, Decode, PartialEq, Eq, PartialOrd, Ord, Hash,
)]
#[serde(transparent)]
pub struct ItemIndex(pub usize);
#[derive(
    Debug, Clone, Copy, Serialize, Deserialize, Encode, Decode, PartialEq, Eq, PartialOrd, Ord, Hash,
)]
#[serde(transparent)]
pub struct TileIndex(pub usize);
#[derive(
    Debug, Clone, Copy, Serialize, Deserialize, Encode, Decode, PartialEq, Eq, PartialOrd, Ord, Hash,
)]
#[serde(transparent)]
pub struct RecipeIndex(pub usize);
#[derive(
    Debug, Clone, Copy, Serialize, Deserialize, Encode, Decode, PartialEq, Eq, PartialOrd, Ord, Hash,
)]
#[serde(transparent)]
pub struct DemandIndex(pub usize);

#[derive(Debug, Clone, Serialize, Deserialize, Encode, Decode)]
pub struct MapMetadata {
    name: String,
    players: usize,
    difficulty: i32,
}

#[derive(Debug, Clone, Serialize, Deserialize, Encode, Decode,  Default)]
#[rustfmt::skip]
pub struct Gamedata {
    pub current_map: String,
    pub item_names: Vec<String>,
    pub tile_names: Vec<String>,
    pub tile_collide: Vec<bool>,
    pub tile_interact: Vec<bool>,
    pub maps: HashMap<String, MapMetadata>,
    pub recipes: Vec<Recipe>,
}

#[derive(Debug, Clone, Serialize, Deserialize, Encode, Decode)]
#[serde(rename_all = "snake_case", tag = "type")]
pub enum PacketS {
    Join {
        name: String,
        character: i32,
        #[serde(skip)]
        id: Option<PlayerID>, // used entity bots that cant receive a response
    },
    Leave {
        player: PlayerID,
    },
    Movement {
        player: PlayerID,
        #[bincode(with_serde)]
        dir: Vec2,
        boost: bool,
        #[bincode(with_serde)]
        pos: Option<Vec2>,
    },
    Interact {
        player: PlayerID,
        #[bincode(with_serde)]
        pos: Option<IVec2>,
    },
    Communicate {
        player: PlayerID,
        message: Option<Message>,
        persist: bool,
    },

    #[serde(skip)]
    #[bincode(skip)]
    /// For internal use only
    ReplaceHand {
        player: PlayerID,
        item: Option<ItemIndex>,
    },
    /// For use in replay sessions only
    ReplayTick {
        dt: f64,
    },
}

#[derive(Debug, Clone, Serialize, Deserialize, Encode, Decode)]
#[serde(rename_all = "snake_case")]
pub enum Message {
    Text(String),
    Item(ItemIndex),
    Effect(String),
}

#[derive(Debug, Clone, Serialize, Deserialize, Encode, Decode)]
#[serde(rename_all = "snake_case", tag = "type")]
pub enum PacketC {
    Version {
        minor: u32,
        major: u32,
        supports_bincode: bool,
    },
    Joined {
        id: PlayerID,
    },
    Data {
        data: Gamedata,
    },
    AddPlayer {
        id: PlayerID,
        #[bincode(with_serde)]
        position: Vec2,
        character: i32,
        name: String,
    },
    RemovePlayer {
        id: PlayerID,
    },
    Movement {
        player: PlayerID,
        #[bincode(with_serde)]
        pos: Vec2,
        rot: f32,
        #[bincode(with_serde)]
        dir: Vec2,
        boost: bool,
    },
    MoveItem {
        from: ItemLocation,
        to: ItemLocation,
    },
    SetItem {
        location: ItemLocation,
        item: Option<ItemIndex>,
    },
    SetProgress {
        item: ItemLocation,
        progress: Option<f32>,
        warn: bool,
    },
    UpdateMap {
        #[bincode(with_serde)]
        tile: IVec2,
        kind: Option<TileIndex>,
        neighbors: [Option<TileIndex>; 4],
    },
    Communicate {
        player: PlayerID,
        message: Option<Message>,
        persist: bool,
    },
    ServerMessage {
        text: String,
    },
    Score(Score),
    SetIngame {
        state: bool,
        lobby: bool,
    },
    Error {
        message: String,
    },
    Menu(Menu),
    MovementSync {
        player: PlayerID,
    },
    Environment {
        effects: HashSet<String>,
    },

    /// For use in replay sessions only
    ReplayStart,
}

#[derive(Debug, Clone, Serialize, Deserialize, Encode, Decode)]
#[serde(rename_all = "snake_case", tag = "menu", content = "data")]
pub enum Menu {
    Book,
    Score(Score),
}

#[derive(Debug, Clone, Serialize, Deserialize, Encode, Decode, Default)]
pub struct Score {
    pub time_remaining: f64,
    pub stars: u8,
    pub points: i64,
    pub demands_failed: usize,
    pub demands_completed: usize,
    pub players: usize,
    pub active_recipes: usize,
    pub passive_recipes: usize,
    pub instant_recipes: usize,
}

#[derive(Debug, Clone, Serialize, Encode, Decode, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum Recipe {
    Passive {
        duration: f32,
        revert_duration: Option<f32>,
        tile: Option<TileIndex>,
        input: ItemIndex,
        output: Option<ItemIndex>,
        warn: bool,
    },
    Active {
        duration: f32,
        tile: Option<TileIndex>,
        input: ItemIndex,
        outputs: [Option<ItemIndex>; 2],
    },
    Instant {
        tile: Option<TileIndex>,
        inputs: [Option<ItemIndex>; 2],
        outputs: [Option<ItemIndex>; 2],
        points: i64,
    },
}

impl Gamedata {
    pub fn tile_name(&self, index: TileIndex) -> &String {
        &self.tile_names[index.0]
    }
    pub fn is_tile_colliding(&self, index: TileIndex) -> bool {
        self.tile_collide[index.0]
    }
    pub fn is_tile_interactable(&self, index: TileIndex) -> bool {
        self.tile_interact[index.0]
    }
    pub fn item_name(&self, index: ItemIndex) -> &String {
        &self.item_names[index.0]
    }
    pub fn recipe(&self, index: RecipeIndex) -> &Recipe {
        &self.recipes[index.0]
    }
    pub fn get_tile_by_name(&self, name: &str) -> Option<TileIndex> {
        self.tile_names
            .iter()
            .position(|t| t == name)
            .map(TileIndex)
    }
    pub fn get_item_by_name(&self, name: &str) -> Option<ItemIndex> {
        self.item_names
            .iter()
            .position(|t| t == name)
            .map(ItemIndex)
    }
    pub fn recipes(&self) -> impl Iterator<Item = (RecipeIndex, &Recipe)> {
        self.recipes
            .iter()
            .enumerate()
            .map(|(i, e)| (RecipeIndex(i), e))
    }
}

impl Recipe {
    pub fn tile(&self) -> Option<TileIndex> {
        match self {
            Recipe::Passive { tile, .. } => *tile,
            Recipe::Active { tile, .. } => *tile,
            Recipe::Instant { tile, .. } => *tile,
        }
    }
    pub fn duration(&self) -> Option<f32> {
        match self {
            Recipe::Passive { duration, .. } => Some(*duration),
            Recipe::Active { duration, .. } => Some(*duration),
            _ => None,
        }
    }
    pub fn revert_duration(&self) -> Option<f32> {
        match self {
            Recipe::Passive {
                revert_duration, ..
            } => *revert_duration,
            _ => None,
        }
    }
    pub fn warn(&self) -> bool {
        match self {
            Recipe::Passive { warn, .. } => *warn,
            _ => false,
        }
    }
    pub fn inputs(&self) -> Vec<ItemIndex> {
        match self {
            Recipe::Passive { input, .. } => vec![*input],
            Recipe::Active { input, .. } => vec![*input],
            Recipe::Instant { inputs, .. } => inputs.iter().flat_map(|e| e.to_owned()).collect(),
        }
    }
    pub fn outputs(&self) -> Vec<ItemIndex> {
        match self {
            Recipe::Passive { output, .. } => output.iter().copied().collect(),
            Recipe::Active { outputs, .. } => outputs.iter().flat_map(|e| e.to_owned()).collect(),
            Recipe::Instant { outputs, .. } => outputs.iter().flat_map(|e| e.to_owned()).collect(),
        }
    }
    pub fn supports_tile(&self, tile: Option<TileIndex>) -> bool {
        if let Some(tile_constraint) = self.tile() {
            if let Some(tile) = tile {
                tile == tile_constraint
            } else {
                false
            }
        } else {
            true
        }
    }
}

#[derive(Debug, Clone, Serialize, Deserialize, Encode, Decode, Copy, PartialEq, Eq, Hash)]
#[serde(rename_all = "snake_case")]
pub enum ItemLocation {
    Tile(#[bincode(with_serde)] IVec2),
    Player(PlayerID),
}

impl Display for ItemLocation {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            ItemLocation::Tile(pos) => write!(f, "tile({pos})"),
            ItemLocation::Player(PlayerID(id)) => write!(f, "player({id})"),
        }
    }
}