group code popup

public/js/group-points.js

@@ -5,6 +5,9 @@ globalThis.Wegwichtel ??= {};
   let database;
   let current = null;
   let generation = 0;
+  let activity = 0;
+  let sentActivity = 0;
+  let touching = false;
   const key = (routeId, poiId) => `${routeId}:${poiId}`;
   async function store(mode, operation) {
     if (!database) database = new Promise((resolve, reject) => {
@@ -45,6 +48,7 @@ globalThis.Wegwichtel ??= {};
       method: 'POST', credentials: 'same-origin', cache: 'no-store',
       headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(body)
     });
+    if (response.status === 204) return {};
     const payload = await response.json();
     if (!response.ok) {
       const error = new Error(t(response.status === 423 ? 'lost' : 'unavailable'));
@@ -158,6 +162,23 @@ globalThis.Wegwichtel ??= {};
     if (savingGeneration !== generation) return false;
     return remote;
   }
+  function noteActivity() { activity += 1; }
+  async function keepActive() {
+    if (!current?.token || activity === sentActivity || touching) return;
+    const editing = current;
+    const observed = activity;
+    touching = true;
+    try {
+      await request(editing.routeId, editing.poiId, { heartbeat: true, token: editing.token });
+      if (editing === current) sentActivity = observed;
+    } catch (error) {
+      if (error.status === 423) {
+        sentActivity = observed;
+        document.dispatchEvent(new Event('wegwichtel:point-lock-lost'));
+      }
+    } finally { touching = false; }
+  }
+  globalThis.setInterval?.(() => { void keepActive(); }, 30_000);
   function headersFor(path) {
     const match = /^\/routes\/(\d+)\/pois\/(\d+)(?:\/|$)/.exec(path);
     if (!match || !current || String(current.routeId) !== match[1] || String(current.poiId) !== match[2]) return {};
@@ -167,7 +188,7 @@ globalThis.Wegwichtel ??= {};
     const version = response.headers?.get('X-Poi-Version');
     if (current && String(current.poiId) === response.headers?.get('X-Poi-Id') && version) current.version = version;
   }
-  ns.GroupPoints = Object.freeze({ begin, release, remember, read, list, remove, prepare, headersFor, observe,
+  ns.GroupPoints = Object.freeze({ begin, release, remember, read, list, remove, prepare, headersFor, observe, noteActivity, keepActive,
     acceptNew: async (routeId, poi) => { current = { ...await acquire(routeId, poi.id), routeId, poiId: poi.id }; },
     changed: () => document.dispatchEvent(new Event('wegwichtel:point-drafts-changed')) });
 }(globalThis.Wegwichtel));