Trying to swap auth for zitadel authentication

[musicformellons]

I'm trying to use zitadel oidc authentication. There is Zitadel API and authentication crate for rust with these docs, which has an example with axum.

I have a basic bootstrapped loco saas project and try to use the above example and adapt it for the loco structure but get stuck. E.g. I'm trying this in src/controller/auth.rs:

use loco_rs::prelude::*;
use zitadel::axum::introspection::{
    IntrospectedUser, IntrospectionConfig, IntrospectionStateBuilder,
};

async fn unauthed() -> String {
    "Hello Unauthorized User".into()
}

async fn authed(user: IntrospectedUser) -> impl IntoResponse {
    format!(
        "Hello authorized user: {:?} with id {}",
        user.username, user.user_id
    )
}

pub fn routes() -> Routes {
    Routes::new()
        .prefix("api/auth")
        .add("/unauthed", get(unauthed))
        .add("/authed", get(authed))
    // .add("/register", post(register))
    // .add("/verify", post(verify))
    // .add("/login", post(login))
    // .add("/forgot", post(forgot))
    // .add("/reset", post(reset))
}

Which gives this clippy issues for the 'authed' function:

error[E0277]: the trait bound zitadel::axum::introspection::IntrospectionConfig: axum::extract::FromRef<loco_rs::prelude::AppContext> is not satisfied --> src/controllers/auth.rs:55:29 | 55 | .add("/authed", get(authed)) | --- ^^^^^^ the trait axum::extract::FromRef<loco_rs::prelude::AppContext> is not implemented for zitadel::axum::introspection::IntrospectionConfig, which is required by fn(zitadel::axum::introspection::IntrospectedUser) -> impl std::future::Future<Output = impl axum::response::IntoResponse> {controllers::auth::authed}: axum::handler::Handler<_, _> | | | required by a bound introduced by this call | = help: the trait axum::extract::FromRef<zitadel::axum::introspection::IntrospectionState> is implemented for zitadel::axum::introspection::IntrospectionConfig = help: for that trait implementation, expected zitadel::axum::introspection::IntrospectionState, found loco_rs::prelude::AppContext = note: required for zitadel::axum::introspection::IntrospectedUser to implement axum::extract::FromRequestParts<loco_rs::prelude::AppContext> = note: required for zitadel::axum::introspection::IntrospectedUser to implement axum::extract::FromRequest<loco_rs::prelude::AppContext, axum_core::extract::private::ViaParts> = note: required for fn(IntrospectedUser) -> impl Future<Output = impl IntoResponse> {authed} to implement axum::handler::Handler<(axum_core::extract::private::ViaParts, zitadel::axum::introspection::IntrospectedUser), loco_rs::prelude::AppContext> 

I tried a bit getting around this without success and hope someone can help me out/ could give some pointers?

[jondot]

I think you have to also include appcontext in the param list (axum tries to figure out the order of params)

[musicformellons]

And how would i add this part:

    let app = Router::new()
        .route("/unauthed", get(unauthed))
        .route("/authed", get(authed))
        .with_state(is);

As loco seems to already have initiated the router (and uses Routes), how do i make the .with_state(is) call?

I also looked into using AppContext for it, but it's fields are also defined within Loco, so how should I extend that?