From e10e2eecf323916192e5deebb320c7f3e5aa77e8 Mon Sep 17 00:00:00 2001
From: Qin Guan <qinguan20040914@gmail.com>
Date: Mon, 23 Oct 2023 23:59:30 +0800
Subject: [PATCH] feat: qr code check in

---
 components/app/services/event/page.vue    | 34 ++++++++--
 components/app/services/event/scanner.vue | 83 +++++++++++------------
 2 files changed, 70 insertions(+), 47 deletions(-)

diff --git a/components/app/services/event/page.vue b/components/app/services/event/page.vue
index 7a9192d..fb4faeb 100644
--- a/components/app/services/event/page.vue
+++ b/components/app/services/event/page.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { f7BlockTitle, f7Button, f7Card, f7Chip, f7Link, f7List, f7ListItem, f7NavRight, f7NavTitle, f7Navbar, f7Page, f7Searchbar, f7SkeletonBlock, f7Subnavbar, f7SwipeoutActions, f7SwipeoutButton } from 'framework7-vue'
+import { f7, f7BlockTitle, f7Button, f7Card, f7Chip, f7Link, f7List, f7ListItem, f7NavRight, f7NavTitle, f7Navbar, f7Page, f7Searchbar, f7SkeletonBlock, f7Subnavbar, f7SwipeoutActions, f7SwipeoutButton } from 'framework7-vue'
 
 import type { VirtualList } from 'framework7/types'
 import type { UnwrapRef } from 'vue'
@@ -57,6 +57,27 @@ async function toggle(admissionKey: string) {
     await set(dbRef(db, `${props.id}/${admissionKey}`), $dayjs().unix())
 }
 
+async function onScan(admissionKey: string) {
+  const attendee = attendees.value.find(attendee => attendee.admissionKey === admissionKey)
+  if (!attendee) // Attendee is in master list from API
+    return
+
+  if (checkedInUsers.value[admissionKey]) { // Attendee is already checked in
+    f7.toast.show({
+      text: `${attendee.name} already checked in`,
+      closeTimeout: 3000,
+    })
+    return
+  }
+
+  await set(dbRef(db, `${props.id}/${admissionKey}`), $dayjs().unix())
+
+  f7.toast.show({
+    text: `Checked in ${attendee.name}`,
+    closeTimeout: 10000,
+  })
+}
+
 // Virtualized list helpers
 
 function searchAll(query: string, items: UnwrapRef<typeof attendees>) {
@@ -112,13 +133,13 @@ function renderExternal(_: unknown, data: VirtualList.VirtualListRenderData) {
       </f7Card>
 
       <f7List inset>
-        <f7Button tonal large @click="state.scannerOpened = !state.scannerOpened">
-          Open scanner
+        <f7Button tonal @click="state.scannerOpened = !state.scannerOpened">
+          {{ state.scannerOpened ? 'Close' : 'Open' }} scanner
         </f7Button>
       </f7List>
 
       <div v-if="state.scannerOpened">
-        <AppServicesEventScanner />
+        <AppServicesEventScanner @scan="onScan" />
       </div>
 
       <f7BlockTitle>Attendees</f7BlockTitle>
@@ -137,7 +158,10 @@ function renderExternal(_: unknown, data: VirtualList.VirtualListRenderData) {
             :style="`top: ${attendeeVirtualListData.topPosition}px`" :virtual-list-index="attendee.index"
           >
             <f7SwipeoutActions right>
-              <f7SwipeoutButton confirm-text="Are you sure?" :color="checkedInUsers[attendee.admissionKey] ? 'red' : 'green'" @click="toggle(attendee.admissionKey)">
+              <f7SwipeoutButton
+                confirm-text="Are you sure?"
+                :color="checkedInUsers[attendee.admissionKey] ? 'red' : 'green'" @click="toggle(attendee.admissionKey)"
+              >
                 {{ checkedInUsers[attendee.admissionKey] ? 'Check out' : 'Check in' }}
               </f7SwipeoutButton>
             </f7SwipeoutActions>
diff --git a/components/app/services/event/scanner.vue b/components/app/services/event/scanner.vue
index 5fde859..3249471 100644
--- a/components/app/services/event/scanner.vue
+++ b/components/app/services/event/scanner.vue
@@ -1,57 +1,56 @@
 <script setup lang="ts">
-import { Html5QrcodeScanner } from 'html5-qrcode'
+import { useQuery } from '@tanstack/vue-query'
+import { f7Button, f7List, f7ListInput, f7ListItem } from 'framework7-vue'
+import { Html5Qrcode } from 'html5-qrcode'
+
+const emit = defineEmits(['scan'])
 
 const state = ref({
-  error: '',
+  selectedCameraId: '',
 })
 
-function onScanSuccess(decodedText, decodedResult) {
-  // Handle on success condition with the decoded text or result.
-  console.log(`Scan result: ${decodedText}`, decodedResult)
-}
-
-onMounted(() => {
-  const html5QrcodeScanner = new Html5QrcodeScanner(
-    'reader',
-    { fps: 10, qrbox: 300 },
-    false,
-  )
+const { data: cameras } = useQuery({
+  queryKey: ['cameras'],
+  queryFn: () => Html5Qrcode.getCameras(),
+  refetchOnWindowFocus: false,
+})
 
-  html5QrcodeScanner.render(onScanSuccess, (err) => {
-    if (err)
-      state.value.error = err
-  })
+watchEffect((onCleanup) => {
+  if (state.value.selectedCameraId.length === 0)
+    return
 
-  document.querySelectorAll('#html5-qrcode-button-camera-permission').forEach((elm) => {
-    console.log(elm)
-    elm.className += ' button'
+  const html5Qrcode = new Html5Qrcode('reader')
+  onCleanup(async () => {
+    await html5Qrcode.stop()
+    html5Qrcode.clear()
   })
 
-  return async () => {
-    await html5QrcodeScanner.clear()
-  }
+  html5Qrcode.start(
+    state.value.selectedCameraId,
+    {
+      fps: 10,
+      qrbox: 250,
+    },
+    (decodedText) => {
+      emit('scan', decodedText)
+    },
+    () => {}, // Ignore all errors, unlikely to happen
+  )
 })
 </script>
 
 <template>
-  <div class="flex flex-col items-center justify-center">
-    <div id="reader" class="w-[90%]" style="border: none;" />
-    <div v-if="state.error">
-      {{ state.error }}
-    </div>
+  <div>
+    <f7List inset>
+      <f7ListItem v-if="cameras" title="Camera" smart-select :smart-select-params="{ openIn: 'popover' }">
+        <select v-model="state.selectedCameraId" name="camera">
+          <option v-for="{ id, label } in cameras" :key="id" :value="id">
+            {{ label }}
+          </option>
+        </select>
+      </f7ListItem>
+    </f7List>
+
+    <div id="reader" />
   </div>
 </template>
-
-<style scoped>
-:deep(#html5-qrcode-button-camera-stop) {
-  display: none !important;
-}
-
-:deep(#reader div:first-child img:nth-child(2)) {
-  display: none !important; /* Hide info button */
-}
-
-#reader {
-  border: none !important;
-}
-</style>