Show onboarding only once

src/choice-screen.js

@@ -1,12 +1,10 @@
 async function onboarding() {
-  const onboardingTabs = await browser.tabs.query({
-    url: browser.extension.getURL('pages/choice-screen.html'),
-  });
-  const onboardingTabIds = onboardingTabs.map(t => t.id);
-  await browser.tabs.remove(onboardingTabIds);
-  await browser.tabs.create({
-    url: browser.extension.getURL('pages/choice-screen.html'),
-  });
+  const { isOnboardingCompleted } = await browser.storage.local.get("isOnboardingCompleted");
+  if (!isOnboardingCompleted) {
+    await browser.tabs.create({
+      url: browser.extension.getURL('pages/choice-screen.html'),
+    });
+  }
 }
 
 onboarding();

src/manifest.json

@@ -17,7 +17,7 @@
   "manifest_version": 2,
   "name": "Ghostery Search",
   "permissions": [
-    "tabs",
+    "storage",
     "cookies",
     "webRequest",
     "webRequestBlocking",

src/pages/common.js

@@ -3,11 +3,13 @@ document.addEventListener('DOMContentLoaded', () => {
   engines.forEach(engine => {
     engine.addEventListener('click', async () => {
       const name = engine.dataset.name;
-      try {
-        await browser.ghostery.setDefaultSearchEngine(name);
-      } catch(e) {
-        console.error(e);
-      }
+      await browser.ghostery.setDefaultSearchEngine(name);
+      const currentTab = await browser.tabs.getCurrent();
+      await browser.storage.local.set({
+        isOnboardingCompleted: true,
+      });
+      await browser.tabs.create({});
+      browser.tabs.remove(currentTab.id);
     });
   });
 });