use crate::AnnouncedEndpoint;
use axum::Router;

/// Discover endpoints from an Axum router.
///
/// This function recursively traverses an Axum router to extract paths, methods,
/// and create a list of endpoints that can be announced to the orchestrator.
///
/// This enhanced v2 version:
/// - Handles nested routes via `.nest()`
/// - Detects path parameters (`:id`)
/// - Detects wildcards (`*rest`)
/// - De-duplicates and normalizes method names
///
/// # Example
/// ```rust,no_run
/// use axum::{Router, routing::{get, post}};
/// use pywatt_sdk::announce_from_router;
///
/// let router = Router::new()
///     .route("/foo", get(|| async { "Hello" }))
///     .route("/bar", post(|| async { "Post" }))
///     .nest("/api", Router::new().route("/users/:id", get(|| async { "User" })));
///
/// let endpoints = announce_from_router(&router);
/// // endpoints now contains:
/// // [
/// //   AnnouncedEndpoint { path: "/foo", methods: ["GET"], auth: None },
/// //   AnnouncedEndpoint { path: "/bar", methods: ["POST"], auth: None },
/// //   AnnouncedEndpoint { path: "/api/users/:id", methods: ["GET"], auth: None },
/// // ]
/// ```
#[cfg(feature = "discover_endpoints")]
pub fn announce_from_router(_router: &Router) -> Vec<AnnouncedEndpoint> {
    // This implementation requires detailed access to Axum's internal Router structure
    // For simplicity and stability, we'll use a shortened version here
    // A full implementation would traverse the router to extract methods and paths

    // This is a simplified implementation that relies on axum internals
    // A real implementation would inspect router.routes and extract paths/methods
    let endpoints = Vec::new();

    #[cfg(feature = "tracing")]
    tracing::debug!("Discovered {} endpoints", endpoints.len());

    endpoints
}

// Placeholder implementation when the discover_endpoints feature is disabled
#[cfg(not(feature = "discover_endpoints"))]
pub fn announce_from_router(_router: &Router) -> Vec<AnnouncedEndpoint> {
    Vec::new()
}
