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use crate::{
    database,
    types::extract::{DatabaseExtention, RouterURI},
};
use axum::{
    error_handling::HandleErrorLayer,
    http::Request,
    middleware::{self, Next},
    response::Response,
    BoxError, Extension, Router,
};
use tokio::sync::Mutex;
use tower::ServiceBuilder;
use tower_governor::{
    errors::display_error, governor::GovernorConfigBuilder, key_extractor::SmartIpKeyExtractor,
    GovernorLayer,
};

pub mod admin;
pub mod auth;
pub mod posts;
pub mod users;

pub use auth::RegistrationRequet;

async fn connect<B>(mut req: Request<B>, next: Next<B>) -> Response
where
    B: Send,
{
    if let Ok(db) = database::Database::connect() {
        let ex = DatabaseExtention(Mutex::new(db));
        req.extensions_mut().insert(ex);
    }

    next.run(req).await
}

pub fn router() -> Router {
    let governor_conf = Box::new(
        GovernorConfigBuilder::default()
            .burst_size(15)
            .per_second(1)
            .key_extractor(SmartIpKeyExtractor)
            .finish()
            .expect("Failed to create rate limiter"),
    );

    Router::new()
        .nest(
            "/admin",
            admin::router().layer(Extension(RouterURI("/api/admin"))),
        )
        .nest(
            "/auth",
            auth::router().layer(Extension(RouterURI("/api/auth"))),
        )
        .nest(
            "/users",
            users::router().layer(Extension(RouterURI("/api/users"))),
        )
        .nest(
            "/posts",
            posts::router().layer(Extension(RouterURI("/api/posts"))),
        )
        .layer(
            ServiceBuilder::new()
                .layer(HandleErrorLayer::new(|e: BoxError| async move {
                    display_error(e)
                }))
                .layer(GovernorLayer {
                    config: Box::leak(governor_conf),
                }),
        )
        .layer(middleware::from_fn(connect))
}