use proc_macro::TokenStream;
use quote::quote;
use syn::{parse_macro_input, DeriveInput};

pub fn invoke(input: TokenStream) -> TokenStream {
    let input = parse_macro_input!(input as DeriveInput);
    let name = input.ident;

    let expanded = quote! {
        #[automatically_derived]
        impl<B: crate::backend::Backend>
        crate::view::__internal::CustomComponent<B> for #name
        where
            #name : crate::view::GetTemplate<B>
        {}

        #[automatically_derived]
        impl<B: crate::backend::Backend>
        crate::view::__internal::IntoNode<B> for #name
        where
            #name : crate::view::GetTemplate<B>
        {
            type Node = crate::view::__internal::CustomComponentWrapper<B, Self>;

            fn into_node(self) -> Self::Node {
                crate::view::__internal::CustomComponentWrapper::new(self)
            }
        }
    };
    expanded.into()
}