//! Celeritas bindings wrapper library

#![warn(missing_docs)]
#![cfg_attr(docsrs, feature(doc_cfg))]

pub use celeritas_sys as ffi;
// use glam::Vec3;

/// Commonly used types
pub mod prelude;

// pub mod ral;
// pub mod resources;
// pub mod shader;

// use std::{
//     ffi::CString,
//     fs::{self, File},
//     io::Write,
//     path::Path,
//     ptr::addr_of_mut,
// };

// use celeritas_sys::{
//     Core_Bringup, Core_Shutdown, DirectionalLight, Material, Material_Insert, PointLight,
//     TextureHandle, Transform,
// };
// use serde::{Deserialize, Serialize};

// pub trait IntoFFI {
//     type FFIType;
//     unsafe fn into_ffi(self) -> Self::FFIType;
// }

// /// Wrapper around a string that is the path to a gltf model **relative** to the configured
// /// `ASSETS` folder
// #[derive(Debug, Clone, Serialize, Deserialize)]
// pub struct ModelPath(pub String);

// #[deprecated]
// #[derive(Debug, Serialize, Deserialize)]
// pub struct ModelNode {
//     pub model_path: ModelPath,
//     pub transform: Transform,
// }

// /// Scene that can be saved and loaded from disk
// #[derive(Debug, Serialize, Deserialize)]
// pub struct SerializableScene {
//     /// main light
//     pub sun: DirectionalLight,
//     pub point_lights: [Option<PointLight>; 4],
//     pub camera_orientation: (Vec3, Vec3),
//     pub models: Vec<ModelNode>,
// }

// // Runtime Scene <-> Serialized Scene

// impl SerializableScene {
//     /// TODO: docs
//     pub fn store_to_file(&self, filepath: &Path) {
//         let mut file = File::create(filepath).expect("creation failed");
//         let json = serde_json::to_string(&self).expect("serialize failed");
//         file.write(json.as_bytes()).expect("writing failed");
//     }
//     /// TODO: docs
//     pub fn load_from_file(filepath: &Path) -> Self {
//         let contents = fs::read_to_string(filepath).expect("Filepath should be open and read-able");

//         serde_json::from_str(&contents).expect("Should be deserializable")
//     }
// }

// #[derive(Debug, Clone, Serialize, Deserialize)]
// pub enum Light {
//     Point(ffi::PointLight),
//     Directional(ffi::DirectionalLight),
//     // Spot(ffi::Spotlight)
// }

// pub struct Core {
//     _window_name: CString,
// }
// impl Core {
//     pub fn init(window_name: &str, window: Option<*mut ffi::GLFWwindow>) -> Self {
//         let name = CString::new(window_name).unwrap();
//         let window_ptr = window.unwrap_or(std::ptr::null_mut());
//         unsafe { Core_Bringup(name.as_ptr() as *const _, window_ptr) };
//         Self { _window_name: name }
//     }
// }

// impl Drop for Core {
//     fn drop(&mut self) {
//         unsafe { Core_Shutdown() }
//     }
// }

// // pub struct Renderable {
// //     pub mesh: MeshHandle,
// //     pub material: MaterialHandle,
// //     pub affine: Mat4,
// //     pub bounding_box: Bbox_3D,
// //     pub flags: RenderEntityFlags,
// // }

// bitflags::bitflags! {
//     #[derive(Debug, Clone, Copy, PartialEq, Eq)]
//     pub struct RenderableFlags : u32 {

//     }
// }

// type M = Material;
// /*
// pub name: [::std::os::raw::c_char; 64usize],
// pub kind: MaterialKind,
// pub base_colour: Vec3,
// pub metallic: f32_,
// pub roughness: f32_,
// pub ambient_occlusion: f32_,
// pub albedo_map: TextureHandle,
// pub normal_map: TextureHandle,
// pub metallic_roughness_map: TextureHandle,
// pub ambient_occlusion_map: TextureHandle, */
// #[derive(Debug, Clone, Default, PartialEq)]
// pub struct PBRMaterial {
//     pub name: String,
//     pub base_colour: glam::Vec3,
//     pub metallic: f32,
//     pub roughness: f32,
//     pub ambient_occlusion: f32,
//     pub albedo_map: Option<TextureHandle>,
//     pub normal_map: Option<TextureHandle>,
//     pub metallic_roughness_map: Option<TextureHandle>,
//     pub ambient_occlusion_map: Option<TextureHandle>,
// }
// impl PBRMaterial {
//     /// Creates the  material in the C core returning a handle to it
//     pub fn create(mat: Self) -> ffi::MaterialHandle {
//         let mut ffi_mat = ffi::Material::from(mat);
//         unsafe { Material_Insert(addr_of_mut!(ffi_mat)) }
//     }
// }

// impl From<PBRMaterial> for ffi::Material {
//     fn from(value: PBRMaterial) -> Self {
//         todo!("impl conv for materials")
//     }
// }