feat: add PWA shortcuts for compose/notifications (#2019)

* feat: add PWA shortcuts for compose/notifications

Fixes #2012

* fix: fix icon path

src/routes/_actions/showComposeDialog.js

@@ -3,24 +3,22 @@ import { importShowComposeDialog } from '../_components/dialog/asyncDialogs/impo
 import { database } from '../_database/database'
 import { doMediaUpload } from './media'
 
-export async function showShareDialogIfNecessary () {
+// show a compose dialog, typically invoked by the Web Share API or a PWA shortcut
+export async function showComposeDialog () {
   const { isUserLoggedIn } = store.get()
   if (!isUserLoggedIn) {
     return
   }
+  const importShowComposeDialogPromise = importShowComposeDialog() // start promise early
+
   const data = await database.getWebShareData()
-  if (!data) {
+
-    return
+  if (data) {
+    await database.deleteWebShareData() // only need this data once; it came from Web Share (service worker)
   }
 
-  // delete from IDB and import the dialog in parallel
-  const [showComposeDialog] = await Promise.all([
-    importShowComposeDialog(),
-    database.deleteWebShareData()
-  ])
-
   console.log('share data', data)
-  const { title, text, url, file } = data
+  const { title, text, url, file } = (data || {})
 
   // url is currently ignored on Android, but one can dream
   // https://web.dev/web-share-target/#verifying-shared-content
@@ -30,6 +28,7 @@ export async function showShareDialogIfNecessary () {
   store.setComposeData('dialog', { text: composeText })
   store.save()
 
+  const showComposeDialog = await importShowComposeDialogPromise
   showComposeDialog()
   if (file) { // start the upload once the dialog is in view so it shows the loading spinner and everything
     /* no await */ doMediaUpload('dialog', file)

src/routes/_store/observers/loggedInObservers.js

@@ -7,7 +7,7 @@ import { customScrollbarObservers } from './customScrollbarObservers'
 import { customEmojiObservers } from './customEmojiObservers'
 import { cleanup } from './cleanup'
 import { wordFilterObservers } from './wordFilterObservers'
-import { showShareDialogObservers } from './showShareDialogObservers'
+import { showComposeDialogObservers } from './showComposeDialogObservers'
 import { badgeObservers } from './badgeObservers'
 
 // These observers can be lazy-loaded when the user is actually logged in.
@@ -21,7 +21,7 @@ export function loggedInObservers () {
   notificationPermissionObservers()
   customScrollbarObservers()
   customEmojiObservers()
-  showShareDialogObservers()
+  showComposeDialogObservers()
   badgeObservers()
   cleanup()
 }

src/routes/_store/observers/showComposeDialogObservers.js

@@ -1,18 +1,18 @@
 import { store } from '../store'
-import { showShareDialogIfNecessary } from '../../_actions/showShareDialogIfNecessary'
+import { showComposeDialog } from '../../_actions/showComposeDialog'
 
 // If the user is logged in, and if the Service Worker handled a POST and set special data
 // in IndexedDB, then we want to handle it on the home page.
-export function showShareDialogObservers () {
+export function showComposeDialogObservers () {
   let observedOnce = false
-  store.observe('currentVerifyCredentials', verifyCredentials => {
+  store.observe('currentVerifyCredentials', async verifyCredentials => {
     if (verifyCredentials && !observedOnce) {
       // when the verifyCredentials object is available, we can check to see
-      // if the user is trying to share something, then share it
+      // if the user is trying to share something (or we got here from a shortcut), then share it
       observedOnce = true
       const { currentPage } = store.get()
-      if (currentPage === 'home') {
+      if (currentPage === 'home' && new URLSearchParams(location.search).get('compose') === 'true') {
-        /* no await */ showShareDialogIfNecessary()
+        await showComposeDialog()
       }
     }
   })

src/service-worker.js

@@ -116,7 +116,7 @@ self.addEventListener('fetch', event => {
         await setWebShareData({ title, text, url, file })
         await closeKeyValIDBConnection() // don't need to keep the IDB connection open
         return Response.redirect(
-          '/?pwa=true', // same as start_url in manifest.json. This can only be invoked from PWAs
+          '/?pwa=true&compose=true', // pwa=true because this can only be invoked from a PWA
           303 // 303 recommended by https://web.dev/web-share-target/
         )
       }

static/manifest.json

@@ -112,6 +112,32 @@
       "purpose": "maskable"
     }
   ],
+  "shortcuts": [
+    {
+      "name": "Write a toot",
+      "short_name": "New toot",
+      "description": "Start composing a new toot",
+      "url": "/?pwa=true&compose=true",
+      "icons": [
+        {
+          "src": "/icon-shortcut-fa-pencil.png",
+          "sizes": "192x192"
+        }
+      ]
+    },
+    {
+      "name": "View notifications",
+      "short_name": "Notifications",
+      "description": "View your new notifications",
+      "url": "/notifications?pwa=true",
+      "icons": [
+        {
+          "src": "/icon-shortcut-fa-bell.png",
+          "sizes": "192x192"
+        }
+      ]
+    }
+  ],
   "screenshots": [
     {
       "src": "screenshot-540-720-1.png",

tests/spec/027-web-share-and-web-shortcuts.js

@@ -0,0 +1,44 @@
+import {
+  composeModalInput, getComposeModalNthMediaListItem,
+  getUrl, modalDialogContents, simulateWebShare
+} from '../utils'
+import { loginAsFoobar } from '../roles'
+import { ONE_TRANSPARENT_PIXEL } from '../../src/routes/_static/media'
+
+fixture`027-web-share-and-web-shortcuts.js`
+  .page`http://localhost:4002`
+
+test('Can take a shortcut directly to a compose dialog', async t => {
+  await loginAsFoobar(t)
+  await t
+    .expect(getUrl()).eql('http://localhost:4002/')
+    .navigateTo('http://localhost:4002/?compose=true')
+    .expect(modalDialogContents.exists).ok()
+    .expect(composeModalInput.value).eql('')
+    .expect(getComposeModalNthMediaListItem(1).exists).notOk()
+})
+
+test('Can share title/text using Web Share', async t => {
+  await loginAsFoobar(t)
+  await t
+    .expect(getUrl()).eql('http://localhost:4002/')
+  await (simulateWebShare({ title: 'my title', url: undefined, text: 'my text' })())
+  await t
+    .navigateTo('http://localhost:4002/?compose=true')
+    .expect(modalDialogContents.exists).ok()
+    .expect(composeModalInput.value).eql('my title\n\nmy text')
+    .expect(getComposeModalNthMediaListItem(1).exists).notOk()
+})
+
+test('Can share a file using Web Share', async t => {
+  await loginAsFoobar(t)
+  await t
+    .expect(getUrl()).eql('http://localhost:4002/')
+  await (simulateWebShare({ title: undefined, url: undefined, text: undefined, file: ONE_TRANSPARENT_PIXEL })())
+  await t
+    .navigateTo('http://localhost:4002/?compose=true')
+    .expect(modalDialogContents.exists).ok()
+    .expect(composeModalInput.value).eql('')
+    .expect(getComposeModalNthMediaListItem(1).exists).ok()
+    .expect(getComposeModalNthMediaListItem(1).getAttribute('aria-label')).eql('media')
+})

tests/utils.js

@@ -265,6 +265,50 @@ export const uploadKittenImage = i => (exec(() => {
   }
 }))
 
+export const simulateWebShare = ({ title, text, url, file }) => (exec(() => {
+  let blob
+  return Promise.resolve().then(() => {
+    if (file) {
+      return fetch(file).then(resp => resp.blob()).then(theBlob => {
+        blob = theBlob
+      })
+    }
+  }).then(() => {
+    return new Promise((resolve, reject) => {
+      const request = indexedDB.open('keyval-store')
+      request.onerror = (event) => {
+        console.error(event)
+        reject(new Error('idb error'))
+      }
+      request.onupgradeneeded = () => {
+        request.result.createObjectStore('keyval')
+      }
+      request.onsuccess = (event) => {
+        const db = event.target.result
+        const txn = db.transaction('keyval', 'readwrite')
+        txn.onerror = () => reject(new Error('idb error'))
+        txn.oncomplete = () => {
+          db.close()
+          resolve()
+        }
+        txn.objectStore('keyval').put({
+          title,
+          text,
+          url,
+          file: blob
+        }, 'web-share-data')
+      }
+    })
+  })
+}, {
+  dependencies: {
+    title,
+    text,
+    url,
+    file
+  }
+}))
+
 export const focus = (selector) => (exec(() => {
   document.querySelector(selector).focus()
 }, {