auth-framework 0.5.0-rc18

use crate::api::ApiState;
use axum::{
    Router,
    response::Json,
    routing::{get, post},
};

/// OpenID4VCI (Verifiable Credential Issuance) metadata endpoint.
///
/// Serves the Credential Issuer Metadata at /.well-known/openid-credential-issuer.
///
/// # Example
/// ```rust,no_run
/// use auth_framework::api::advanced_protocols::credential_issuer_metadata;
///
/// // This endpoint is automatically mounted by the advanced protocol router
/// // and returns metadata detailing supported verifiable credentials.
/// ```
pub async fn credential_issuer_metadata() -> Json<serde_json::Value> {
    Json(serde_json::json!({
        "credential_issuer": "https://auth.example.com",
        "credential_endpoint": "https://auth.example.com/credential",
        "supported_credentials": []
    }))
}

/// OpenID4VCI credential issuance endpoint.
///
/// Accepts a credential request and returns the issued verifiable credential.
///
/// # Example
/// ```rust,no_run
/// use auth_framework::api::advanced_protocols::issue_credential;
///
/// // Clients POST their presentation definitions here to receive a Verifiable Credential.
/// ```
pub async fn issue_credential() -> Json<serde_json::Value> {
    Json(serde_json::json!({ "status": "not_implemented" }))
}

/// OpenID4VP (Verifiable Presentations) request endpoint.
///
/// Serves presentation requests directing clients to submit matching claims.
///
/// # Example
/// ```rust,no_run
/// use auth_framework::api::advanced_protocols::presentation_request;
///
/// // Provides the Presentation Definition specifying exactly which claims
/// // the user needs to share with the relying party.
/// ```
pub async fn presentation_request() -> Json<serde_json::Value> {
    Json(serde_json::json!({ "presentation_definition": {} }))
}

/// OpenID4VP presentation submission endpoint.
///
/// Accepts verifiable presentations containing signed credentials structure.
///
/// # Example
/// ```rust,no_run
/// use auth_framework::api::advanced_protocols::presentation_response;
///
/// // Validates the JSON Web Signature (JWS) or EdDSA proof submitted
/// // by the digital wallet.
/// ```
pub async fn presentation_response() -> Json<serde_json::Value> {
    Json(serde_json::json!({ "status": "presentation_received" }))
}

/// SPIFFE Trust Domain bundle endpoint.
///
/// Delivers the public Trust Bundle (JWKS key format structure) necessary to validate
/// the digital signatures on X.509-SVIDs or JWT-SVIDs.
///
/// # Example
/// ```rust,no_run
/// use auth_framework::api::advanced_protocols::spiffe_trust_bundle;
///
/// // Other workloads pull keys from here to securely authenticate service identities.
/// ```
pub async fn spiffe_trust_bundle() -> Json<serde_json::Value> {
    Json(serde_json::json!({ "keys": [] }))
}

/// CAEP (Continuous Access Evaluation Profile) Shared Signals endpoint.
///
/// Consumes asynchronous risk signals to revoke sessions real-time.
///
/// # Example
/// ```rust,no_run
/// use auth_framework::api::advanced_protocols::caep_events;
///
/// // Accepts SSE (Shared Signals and Events) payload confirming compromised
/// // user devices to sever existing active tokens immediately.
/// ```
pub async fn caep_events() -> Json<serde_json::Value> {
    Json(serde_json::json!({ "events": [] }))
}

/// ACME (Automatic Certificate Management Environment) Directory.
///
/// Serves the root ACME directory metadata providing discovery URIs for
/// registering clients and completing domain HTTP-01 validations.
///
/// # Example
/// ```rust,no_run
/// use auth_framework::api::advanced_protocols::acme_directory;
///
/// // Returns directory mappings enabling automated TLS cert renewals.
/// ```
pub async fn acme_directory() -> Json<serde_json::Value> {
    Json(serde_json::json!({
        "newNonce": "https://auth.example.com/acme/new-nonce",
        "newAccount": "https://auth.example.com/acme/new-account",
        "newOrder": "https://auth.example.com/acme/new-order"
    }))
}

/// Configures and returns the Axum router for all advanced protocol endpoints.
///
/// Merges OpenID4VCI, OpenID4VP, SPIFFE, CAEP, and ACME handlers into a unified router
/// intended for high-profile identity interactions.
///
/// # Example
/// ```rust,ignore
/// use auth_framework::api::advanced_protocols;
/// use axum::Router;
///
/// // Within server.rs builder:
/// let router = Router::new()
///     .merge(advanced_protocols::router()) // Auto-binds endpoints
///     // .with_state(state)
///     ;
/// ```
pub fn router() -> Router<ApiState> {
    Router::new()
        // OpenID4VCI
        .route(
            "/.well-known/openid-credential-issuer",
            get(credential_issuer_metadata),
        )
        .route("/credential", post(issue_credential))
        // OpenID4VP
        .route("/presentation-request", get(presentation_request))
        .route("/presentation-response", post(presentation_response))
        // SPIFFE
        .route("/.well-known/spiffe-trust-domain", get(spiffe_trust_bundle))
        // CAEP
        .route("/caep/events", post(caep_events))
        // ACME
        .route("/acme/directory", get(acme_directory))
}