use super::vector3::Vector3;

#[derive(Clone,Copy)]
pub struct CFrame(pub(crate)glam::Affine3A);

impl CFrame{
	pub fn new(x:f32,y:f32,z:f32)->Self{
		Self(glam::Affine3A::from_translation(glam::vec3(x,y,z)))
	}
	pub fn angles(x:f32,y:f32,z:f32)->Self{
		Self(glam::Affine3A::from_mat3(glam::Mat3::from_euler(glam::EulerRot::YXZ,y,x,z)))
	}
}

pub fn set_globals(lua:&mlua::Lua,globals:&mlua::Table<'_>)->Result<(),mlua::Error>{
	let cframe_table=lua.create_table()?;

	//CFrame.new
	cframe_table.raw_set("new",
		lua.create_function(|ctx,(x,y,z):(f32,f32,f32)|
			Ok(ctx.create_userdata(CFrame::new(x,y,z)))
		)?
	)?;

	//CFrame.Angles
	cframe_table.raw_set("Angles",
		lua.create_function(|ctx,(x,y,z):(f32,f32,f32)|
			Ok(ctx.create_userdata(CFrame::angles(x,y,z)))
		)?
	)?;

	globals.set("CFrame",cframe_table)?;

	Ok(())
}

impl mlua::UserData for CFrame{
	fn add_fields<'lua,F:mlua::UserDataFields<'lua,Self>>(fields:&mut F){
		//CFrame.p
		fields.add_field_method_get("p",|_,this|Ok(Vector3(this.0.translation)));
	}

	fn add_methods<'lua,M:mlua::UserDataMethods<'lua,Self>>(methods:&mut M){
		methods.add_method("components",|_,this,()|Ok((
			this.0.translation.x,
			this.0.translation.y,
			this.0.translation.z,
			this.0.matrix3.x_axis.x,
			this.0.matrix3.y_axis.x,
			this.0.matrix3.z_axis.x,
			this.0.matrix3.x_axis.y,
			this.0.matrix3.y_axis.y,
			this.0.matrix3.z_axis.y,
			this.0.matrix3.x_axis.z,
			this.0.matrix3.y_axis.z,
			this.0.matrix3.z_axis.z,
		)));

		//methods.add_meta_method(mlua::MetaMethod::Mul,|_,this,val:&Vector3|Ok(Vector3(this.0.matrix3*val.0+this.0.translation)));
		methods.add_meta_function(mlua::MetaMethod::Mul,|_,(this,val):(Self,Self)|Ok(Self(this.0*val.0)));
		methods.add_meta_function(mlua::MetaMethod::ToString,|_,this:Self|
			Ok(format!("CFrame.new({},{},{},{},{},{},{},{},{},{},{},{})",
				this.0.translation.x,
				this.0.translation.y,
				this.0.translation.z,
				this.0.matrix3.x_axis.x,
				this.0.matrix3.y_axis.x,
				this.0.matrix3.z_axis.x,
				this.0.matrix3.x_axis.y,
				this.0.matrix3.y_axis.y,
				this.0.matrix3.z_axis.y,
				this.0.matrix3.x_axis.z,
				this.0.matrix3.y_axis.z,
				this.0.matrix3.z_axis.z,
			))
		);
	}
}

type_from_lua_userdata!(CFrame);