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use serde::Deserialize;

use crate::sim::cell_manager::sim::{PostUpdateAction, UpdateCtx};

pub mod fire;
pub mod gas;
pub mod liquid;
pub mod powder;

#[repr(u8)]
#[derive(Clone, Copy, PartialEq, Eq, Debug, Deserialize)]
pub enum MaterialId {
    Void = 0,
    Sand,
    Dirt,
    Stone,
    Wood,
    Water,
    Fire,
    Smoke,
    Steel,
    Tnt,
    Cloth,
}

#[repr(u8)]
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub enum MaterialForm {
    Void,
    Gas,
    Liquid,
    Powder,
    Solid,
}

pub struct MaterialDef {
    pub name: &'static str,
    pub color: (u8, u8, u8, u8),
    pub density: u8,
    pub form: MaterialForm,
    pub sim_update: Option<fn(ctx: &mut UpdateCtx) -> PostUpdateAction>,

    // lighting
    pub emission: (u8, u8, u8, u8),
    pub opacity: u8,
}

static MATERIALS: [MaterialDef; 11] = [
    MaterialDef {
        name: "Void",
        color: (0x00, 0x00, 0x00, 0x00),
        density: 0,
        // form usually but not always determines the update fn
        form: MaterialForm::Void,
        sim_update: None,

        emission: (0x00, 0x00, 0x00, 0x00),
        opacity: 0x00,
    },
    MaterialDef {
        name: "Sand",
        color: (0xDE, 0xCB, 0x85, 0xFF),
        density: 50,
        form: MaterialForm::Powder,
        sim_update: Some(powder::sim_update),

        emission: (0x00, 0x00, 0x00, 0x00),
        opacity: 0xE0,
    },
    MaterialDef {
        name: "Dirt",
        color: (0x2B, 0x20, 0x1C, 0xFF),
        density: 55,
        form: MaterialForm::Solid,
        sim_update: None,

        emission: (0x00, 0x00, 0x00, 0x00),
        opacity: 0xE0,
    },
    MaterialDef {
        name: "Stone",
        color: (0x33, 0x30, 0x2F, 0xFF),
        density: 115,
        form: MaterialForm::Solid,
        sim_update: None,

        emission: (0x00, 0x00, 0x00, 0x00),
        opacity: 0xFF,
    },
    MaterialDef {
        name: "Wood",
        color: (0x66, 0x39, 0x31, 0xFF),
        density: 60,
        form: MaterialForm::Solid,
        sim_update: None,

        emission: (0x00, 0x00, 0x00, 0x00),
        opacity: 0xFF,
    },
    MaterialDef {
        name: "Water",
        color: (0x38, 0xA9, 0xFF, 0xFF),
        density: 40,
        form: MaterialForm::Liquid,
        sim_update: Some(liquid::sim_update),

        emission: (0x00, 0x00, 0x00, 0x00),
        opacity: 0x70,
    },
    // TODO this is not a material
    MaterialDef {
        name: "Fire",
        color: (0xFC, 0x66, 0x00, 0xAA),
        // for now this matches wood
        density: 50,
        form: MaterialForm::Gas,
        sim_update: Some(fire::sim_update),

        emission: (0xFF, 0x00, 0x00, 0x00),
        opacity: 0x00,
    },
    MaterialDef {
        name: "Smoke",
        color: (0x32, 0x35, 0x36, 0xAA),
        density: 15,
        form: MaterialForm::Gas,
        sim_update: Some(gas::sim_update),

        emission: (0x00, 0x00, 0x00, 0x00),
        opacity: 0x10,
    },
    MaterialDef {
        name: "Steel",
        color: (0x60, 0x60, 0x60, 0xFF),
        density: 150,
        form: MaterialForm::Solid,
        sim_update: None,

        emission: (0x00, 0x00, 0x00, 0x00),
        opacity: 0xE0,
    },
    MaterialDef {
        name: "TNT",
        color: (0xA6, 0x34, 0x23, 0xFF),
        density: 55,
        form: MaterialForm::Solid,
        sim_update: None,

        emission: (0x00, 0x00, 0x00, 0x00),
        opacity: 0xE0,
    },
    MaterialDef {
        name: "Cloth",
        color: (0x23, 0x27, 0x63, 0xFF),
        density: 25,
        form: MaterialForm::Solid,
        sim_update: None,

        emission: (0x00, 0x00, 0x00, 0x00),
        opacity: 0xE0,
    },
];

impl MaterialId {
    pub const ALL: [MaterialId; 11] = [
        MaterialId::Void,
        MaterialId::Sand,
        MaterialId::Dirt,
        MaterialId::Stone,
        MaterialId::Wood,
        MaterialId::Water,
        MaterialId::Fire,
        MaterialId::Smoke,
        MaterialId::Steel,
        MaterialId::Tnt,
        MaterialId::Cloth,
    ];
    #[inline]
    pub fn def(self) -> &'static MaterialDef {
        &MATERIALS[self as usize]
    }

    pub fn from_index(idx: u8) -> MaterialId {
        MaterialId::ALL[idx as usize]
    }
}