Port dav calendar settings page to Vue.js

- Drop reliance on deprecated global jQuery object.
- Allow testing user interactions.
- Use newer technology stack.

---

Test user interactions with the groupware dav settings

Add infrastructure to test Vue components:

- Use recommended libraries:

    - https://vuejs.org/v2/guide/testing.html#Recommendations
    - Use jest-dom for robust assertions on the DOM state
    - Use user-event to be more representative of user actions

- Code is transpiled by Jest, with the help of vue-jest.

Ignore test files for no-unpublished-import. Prevent ESLint from
flagging:

```
/home/runner/work/server/server/apps/dav/src/views/CalDavSettings.spec.js
Error:   1:24  error  "@testing-library/vue" is not published         node/no-unpublished-import
Error:   2:23  error  "@testing-library/user-event" is not published  node/no-unpublished-import
```

Signed-off-by: François Freitag <mail@franek.fr>

1 files changed, 127 insertions, 0 deletions

diff --git a/apps/dav/src/views/CalDavSettings.vue b/apps/dav/src/views/CalDavSettings.vue
new file mode 100644
index 00000000000..4b33b2b45bb
--- /dev/null
+++ b/apps/dav/src/views/CalDavSettings.vue
@@ -0,0 +1,127 @@
+<template>
+	<div class="section">
+		<h2>{{ $t('dav', 'Calendar server') }}</h2>
+		<!-- Can use v-html as:
+			- $t passes the translated string through DOMPurify.sanitize,
+			- replacement strings are not user-controlled. -->
+		<!-- eslint-disable-next-line vue/no-v-html -->
+		<p class="settings-hint" v-html="hint" />
+		<p>
+			<input
+				id="caldavSendInvitations"
+				v-model="sendInvitations"
+				type="checkbox"
+				class="checkbox">
+			<label for="caldavSendInvitations">
+				{{ $t('dav', 'Send invitations to attendees') }}
+			</label>
+			<br>
+			<!-- Can use v-html as:
+				- $t passes the translated string through DOMPurify.sanitize,
+				- replacement strings are not user-controlled. -->
+			<!-- eslint-disable-next-line vue/no-v-html -->
+			<em v-html="sendInvitationsHelpText" />
+		</p>
+		<p>
+			<input
+				id="caldavGenerateBirthdayCalendar"
+				v-model="generateBirthdayCalendar"
+				type="checkbox"
+				class="checkbox">
+			<label for="caldavGenerateBirthdayCalendar">
+				{{ $t('dav', 'Automatically generate a birthday calendar') }}
+			</label>
+			<br>
+			<em>
+				{{ $t('dav', 'Birthday calendars will be generated by a background job.') }}
+			</em>
+			<br>
+			<em>
+				{{ $t('dav', 'Hence they will not be available immediately after enabling but will show up after some time.') }}
+			</em>
+		</p>
+		<p>
+			<input
+				id="caldavSendEventReminders"
+				v-model="sendEventReminders"
+				type="checkbox"
+				class="checkbox">
+			<label for="caldavSendEventReminders">
+				{{ $t('dav', 'Send notifications for events') }}
+			</label>
+			<br>
+			<!-- Can use v-html as:
+				- $t passes the translated string through DOMPurify.sanitize,
+				- replacement strings are not user-controlled. -->
+			<!-- eslint-disable-next-line vue/no-v-html -->
+			<em v-html="sendEventRemindersHelpText" />
+			<br>
+			<em>
+				{{ $t('dav', 'Notifications are sent via background jobs, so these must occur often enough.') }}
+			</em>
+		</p>
+		<p>
+			<input
+				id="caldavSendEventRemindersPush"
+				v-model="sendEventRemindersPush"
+				type="checkbox"
+				class="checkbox"
+				:disabled="!sendEventReminders">
+			<label for="caldavSendEventRemindersPush">
+				{{ $t('dav', 'Enable notifications for events via push') }}
+			</label>
+		</p>
+	</div>
+</template>
+
+<script>
+import axios from '@nextcloud/axios'
+import { generateUrl } from '@nextcloud/router'
+
+export default {
+	name: 'CalDavSettings',
+	computed: {
+		hint() {
+			const translated = this.$t(
+				'dav',
+				'Also install the {calendarappstoreopen}Calendar app{linkclose}, or {calendardocopen}connect your desktop & mobile for syncing ↗{linkclose}.',
+			)
+			return translated
+				.replace('{calendarappstoreopen}', '<a target="_blank" href="../apps/office/calendar">')
+				.replace('{calendardocopen}', '<a target="_blank" :href="userSyncCalendarsUrl" rel="noreferrer noopener">')
+				.replace(/\{linkclose\}/g, '</a>')
+		},
+		sendInvitationsHelpText() {
+			const translated = this.$t('dav', 'Please make sure to properly set up {emailopen}the email server{linkclose}.')
+			return translated
+				.replace('{emailopen}', '<a href="../admin#mail_general_settings">')
+				.replace('{linkclose}', '</a>')
+		},
+		sendEventRemindersHelpText() {
+			const translated = this.$t('dav', 'Please make sure to properly set up {emailopen}the email server{linkclose}.')
+			return translated
+				.replace('{emailopen}', '<a href="../admin#mail_general_settings">')
+				.replace('{linkclose}', '</a>')
+		},
+	},
+	watch: {
+		generateBirthdayCalendar(value) {
+			const baseUrl = value ? '/apps/dav/enableBirthdayCalendar' : '/apps/dav/disableBirthdayCalendar'
+			axios.post(generateUrl(baseUrl))
+		},
+		sendInvitations(value) {
+			OCP.AppConfig.setValue(
+				'dav',
+				'sendInvitations',
+				value ? 'yes' : 'no'
+			)
+		},
+		sendEventReminders(value) {
+			OCP.AppConfig.setValue('dav', 'sendEventReminders', value ? 'yes' : 'no')
+		},
+		sendEventRemindersPush(value) {
+			OCP.AppConfig.setValue('dav', 'sendEventRemindersPush', value ? 'yes' : 'no')
+		},
+	},
+}
+</script>