Add experimental automatic offline message. (closes #69)

Author: onfe

src/registerServiceWorker.js

@@ -34,6 +34,9 @@ if (process.env.NODE_ENV === "production") {
       console.log(
         "No internet connection found. App is running in offline mode."
       );
+      document.dispatchEvent(
+        new CustomEvent("sw-status", { detail: "offline" })
+      );
     },
     error(error) {
       console.error("Error during service worker registration:", error);

src/store/client.js

@@ -97,6 +97,9 @@ const actions = {
     commit("updateError", "");
   },
   swUpdate: ({ commit }, type) => {
+    if (type == "offline") {
+      commit("updateError", "Picto is offline.");
+    }
     commit("swUpdate", type);
   }
 };