From feecb1cbf10bb020cf12b548d279bad68016b2ea Mon Sep 17 00:00:00 2001
From: Gavin Morrow <gavinfmorrow@gmail.com>
Date: Sat, 28 Mar 2026 11:15:04 -0400
Subject: [PATCH] Add health route

---
 server/priv/service-worker.js              | 3 ++-
 server/src/subway_gleam/server.gleam       | 1 +
 server/src/subway_gleam/server/route.gleam | 6 ++++++
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/server/priv/service-worker.js b/server/priv/service-worker.js
index 5b1bf11..a251df5 100644
--- a/server/priv/service-worker.js
+++ b/server/priv/service-worker.js
@@ -35,7 +35,8 @@ self.addEventListener("fetch", (event) => {
 
   const disallowsCache =
     url.pathname.includes("model_stream") ||
-    url.pathname === "/static/service-worker.js";
+    url.pathname === "/static/service-worker.js" ||
+    url.pathname === "/health/";
 
   if (!allowsCache || disallowsCache) return;
 
diff --git a/server/src/subway_gleam/server.gleam b/server/src/subway_gleam/server.gleam
index ea95a62..5a7def2 100644
--- a/server/src/subway_gleam/server.gleam
+++ b/server/src/subway_gleam/server.gleam
@@ -183,6 +183,7 @@ fn handler(state: state.Ref, req: wisp.Request) -> wisp.Response {
 
   case wisp.path_segments(req) {
     [] -> route.index(req)
+    ["health"] -> route.health(req)
     ["map"] -> route.map(req)
     ["stops"] ->
       case env.profile_pages() |> list.contains("stops") {
diff --git a/server/src/subway_gleam/server/route.gleam b/server/src/subway_gleam/server/route.gleam
index eb7518a..8333f1e 100644
--- a/server/src/subway_gleam/server/route.gleam
+++ b/server/src/subway_gleam/server/route.gleam
@@ -30,6 +30,12 @@ pub fn index(req: wisp.Request) -> wisp.Response {
   #(Body(body:), res)
 }
 
+pub fn health(_req: wisp.Request) -> wisp.Response {
+  wisp.ok()
+  |> wisp.set_header("cache-control", "no-cache")
+  |> wisp.set_body(wisp.Text("200 OK"))
+}
+
 pub fn not_found(req: wisp.Request) -> wisp.Response {
   use _req <- lustre_res(req)
 
-- 
2.51.2