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extern crate proc_macro;
use self::route::compile_route;
use pmutil::{q, ToTokensExt};

mod path;
mod route;
mod router;

#[proc_macro_attribute]
pub fn get(
    path: proc_macro::TokenStream,
    fn_item: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
    compile_route(Some(q!({ get })), path.into(), fn_item.into())
}

#[proc_macro_attribute]
pub fn post(
    path: proc_macro::TokenStream,
    fn_item: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
    compile_route(Some(q!({ post })), path.into(), fn_item.into())
}

#[proc_macro_attribute]
pub fn put(
    path: proc_macro::TokenStream,
    fn_item: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
    compile_route(Some(q!({ put })), path.into(), fn_item.into())
}

#[proc_macro_attribute]
pub fn delete(
    path: proc_macro::TokenStream,
    fn_item: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
    compile_route(Some(q!({ delete })), path.into(), fn_item.into())
}

#[proc_macro_attribute]
pub fn head(
    path: proc_macro::TokenStream,
    fn_item: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
    compile_route(Some(q!({ head })), path.into(), fn_item.into())
}

#[proc_macro_attribute]
pub fn options(
    path: proc_macro::TokenStream,
    fn_item: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
    compile_route(Some(q!({ options })), path.into(), fn_item.into())
}

#[proc_macro_attribute]
pub fn patch(
    path: proc_macro::TokenStream,
    fn_item: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
    compile_route(Some(q!({ patch })), path.into(), fn_item.into())
}

/// Creates a router. Useful for modularizing codes.
///
///
/// # Note
///
/// Currently router returns 404 error if there is a no matching rule.
#[proc_macro_attribute]
pub fn router(
    attr: proc_macro::TokenStream,
    item: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
    router::router(attr.into(), item.into()).dump().into()
}