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use proc_macro::TokenStream;
use crate::COUNTER;

pub fn generate_dummy_part_checker(input: TokenStream) -> TokenStream {
	if !input.is_empty() {
		return syn::Error::new(proc_macro2::Span::call_site(), "No arguments expected")
			.to_compile_error().into()
	}

	let count = COUNTER.with(|counter| counter.borrow_mut().inc());

	let no_op_macro_ident = syn::Ident::new(
		&format!("__dummy_part_checker_{}", count),
		proc_macro2::Span::call_site(),
	);

	quote::quote!(
		#[macro_export]
		#[doc(hidden)]
		macro_rules! #no_op_macro_ident {
			( $( $tt:tt )* ) => {};
		}

		#[doc(hidden)]
		pub mod __substrate_genesis_config_check {
			#[doc(hidden)]
			pub use #no_op_macro_ident as is_genesis_config_defined;
			#[doc(hidden)]
			pub use #no_op_macro_ident as is_std_enabled_for_genesis;
		}

		#[doc(hidden)]
		pub mod __substrate_event_check {
			#[doc(hidden)]
			pub use #no_op_macro_ident as is_event_part_defined;
		}

		#[doc(hidden)]
		pub mod __substrate_inherent_check {
			#[doc(hidden)]
			pub use #no_op_macro_ident as is_inherent_part_defined;
		}

		#[doc(hidden)]
		pub mod __substrate_validate_unsigned_check {
			#[doc(hidden)]
			pub use #no_op_macro_ident as is_validate_unsigned_part_defined;
		}

		#[doc(hidden)]
		pub mod __substrate_call_check {
			#[doc(hidden)]
			pub use #no_op_macro_ident as is_call_part_defined;
		}

		#[doc(hidden)]
		pub mod __substrate_origin_check {
			#[doc(hidden)]
			pub use #no_op_macro_ident as is_origin_part_defined;
		}
	).into()
}