From 9011f223c73cb22ab49ba52081fd26d6c1f1858e Mon Sep 17 00:00:00 2001
From: Simon Goller <neosam+github@posteo.de>
Date: Wed, 26 Jun 2024 13:04:35 +0200
Subject: [PATCH] Add REST service which provides the version

---
 app/src/main.rs |  4 ++++
 rest/src/lib.rs | 10 ++++++++++
 2 files changed, 14 insertions(+)

diff --git a/app/src/main.rs b/app/src/main.rs
index 4891ee2..941d3dd 100644
--- a/app/src/main.rs
+++ b/app/src/main.rs
@@ -77,6 +77,10 @@ impl rest::RestStateDef for RestStateImpl {
     type WorkingHoursService = WorkingHoursService;
     type ExtraHoursService = ExtraHoursService;
 
+    fn backend_version(&self) -> Arc<str> {
+        Arc::from(env!("CARGO_PKG_VERSION"))
+    }
+
     fn user_service(&self) -> Arc<Self::UserService> {
         self.user_service.clone()
     }
diff --git a/rest/src/lib.rs b/rest/src/lib.rs
index c9d6628..b9aa818 100644
--- a/rest/src/lib.rs
+++ b/rest/src/lib.rs
@@ -237,6 +237,8 @@ pub trait RestStateDef: Clone + Send + Sync + 'static {
         + Sync
         + 'static;
 
+    fn backend_version(&self) -> Arc<str>;
+
     fn user_service(&self) -> Arc<Self::UserService>;
     fn permission_service(&self) -> Arc<Self::PermissionService>;
     fn slot_service(&self) -> Arc<Self::SlotService>;
@@ -276,6 +278,13 @@ pub async fn login() -> Redirect {
     Redirect::to("/")
 }
 
+pub async fn get_version<RestState: RestStateDef>(rest_state: State<RestState>) -> Response {
+    Response::builder()
+        .status(200)
+        .body(Body::new(rest_state.backend_version().to_string()))
+        .unwrap()
+}
+
 #[cfg(feature = "oidc")]
 use axum_oidc::OidcRpInitiatedLogout;
 #[cfg(feature = "oidc")]
@@ -344,6 +353,7 @@ pub async fn start_server<RestState: RestStateDef>(rest_state: RestState) {
 
     let app = app
         .route("/auth-info", get(auth_info::<RestState>))
+        .route("/version", get(get_version::<RestState>))
         .nest("/permission", permission::generate_route())
         .nest("/slot", slot::generate_route())
         .nest("/sales-person", sales_person::generate_route())