use crate::globaluniform::GlobalUniform;

/// Basic wgsl preprocesser
pub(crate) fn preprocess_shader(
	shader: &str,
	global_uniform: &GlobalUniform,
	global_uniform_group: u32,
) -> String {
	// Insert dynamically-generated global definitions
	let shader = shader.replace(
		"// INCLUDE: global uniform header",
		&global_uniform.shader_header(global_uniform_group),
	);

	// Insert common functions
	let shader = shader.replace(
		"// INCLUDE: animate.wgsl",
		&include_str!(concat!(
			env!("CARGO_MANIFEST_DIR"),
			"/shaders/include/",
			"animate.wgsl"
		)),
	);

	let shader = shader.replace(
		"// INCLUDE: anchor.wgsl",
		&include_str!(concat!(
			env!("CARGO_MANIFEST_DIR"),
			"/shaders/include/",
			"anchor.wgsl"
		)),
	);

	return shader;
}