make consts; clean up get status

webroot/js/status.js

@@ -1,42 +1,45 @@
 var playerRestartTimer;
 
-async function getStatus() {
-  const url = "/status";
 
-  try {
-    const response = await fetch(url);
-    const status = await response.json();
-
-    clearTimeout(playerRestartTimer);
-
-    if (!app.isOnline && status.online) {
-      // The stream was offline, but now it's online.  Force start of playback after an arbitrary
-      // delay to make sure the stream has actual data ready to go.
-      playerRestartTimer = setTimeout(function () {
-        restartPlayer();
-      }, 3000);
-    }
-
-    app.streamStatus = status.online
-      ? "Stream is online."
-      : "Stream is offline."
-
-    const player = videojs('video');
-    if (app.isOnline) {
-      player.poster('/thumbnail.jpg');
-    } else {
-      // Change this to some kind of offline image.
-      player.poster('/img/logo.png');
-    }
-
-    app.viewerCount = status.viewerCount;
-    app.sessionMaxViewerCount = status.sessionMaxViewerCount;
-    app.overallMaxViewerCount = status.overallMaxViewerCount;
-    app.isOnline = status.online;
-
-  } catch (e) {
-    app.streamStatus = "Stream server is offline."
-    app.viewerCount = 0
+function handleStatus(status) {
+  clearTimeout(playerRestartTimer);
+  if (!app.isOnline && status.online) {
+    // The stream was offline, but now it's online.  Force start of playback after an arbitrary delay to make sure the stream has actual data ready to go.
+    playerRestartTimer = setTimeout(restartPlayer, 3000);
   }
 
-}
+  app.streamStatus = status.online ? MESSAGE_ONLINE : MESSAGE_OFFLINE;
+
+  app.viewerCount = status.viewerCount;
+  app.sessionMaxViewerCount = status.sessionMaxViewerCount;
+  app.overallMaxViewerCount = status.overallMaxViewerCount;
+  app.isOnline = status.online;
+  setVideoPoster(app.isOnline);
+
+}
+
+function handleOffline() {
+  const player = videojs(VIDEO_ID);
+  player.poster(POSTER_DEFAULT);
+  app.streamStatus = MESSAGE_OFFLINE;
+  app.viewerCount = 0;
+}
+
+function getStatus() {
+  const options = {
+    // mode: 'no-cors',
+  }
+  fetch(URL_STATUS, options)
+    .then(response => {
+      if (!response.ok) {
+        throw new Error(`Network response was not ok ${response.ok}`);
+      }
+      return response.json();
+    })
+    .then(json => {
+      handleStatus(json);
+    })
+    .catch(error => {
+      handleOffline();
+    });
+}