elk/composables/push-notifications/usePushManager.ts

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import type { mastodon } from 'masto'
import type {
CreatePushNotification,
PushNotificationPolicy,
PushNotificationRequest,
SubscriptionResult,
} from '~/composables/push-notifications/types'
import { STORAGE_KEY_NOTIFICATION, STORAGE_KEY_NOTIFICATION_POLICY } from '~/constants'
const supportsPushNotifications = typeof window !== 'undefined'
&& 'serviceWorker' in navigator
&& 'PushManager' in window
&& 'getKey' in PushSubscription.prototype
export function usePushManager() {
const { client } = useMasto()
const isSubscribed = ref(false)
const notificationPermission = ref<PermissionState | undefined>(
Notification.permission === 'denied'
? 'denied'
: Notification.permission === 'granted'
? 'granted'
: Notification.permission === 'default'
? 'prompt'
: undefined,
)
const isSupported = computed(() => supportsPushNotifications)
const hiddenNotification = useLocalStorage<PushNotificationRequest>(STORAGE_KEY_NOTIFICATION, {})
const configuredPolicy = useLocalStorage<PushNotificationPolicy>(STORAGE_KEY_NOTIFICATION_POLICY, {})
const pushNotificationData = ref(createRawSettings(
currentUser.value?.pushSubscription,
configuredPolicy.value[currentUser.value?.account?.acct ?? ''],
))
const oldPushNotificationData = ref(createRawSettings(
currentUser.value?.pushSubscription,
configuredPolicy.value[currentUser.value?.account?.acct ?? ''],
))
const saveEnabled = computed(() => {
const current = pushNotificationData.value
const previous = oldPushNotificationData.value
return current.favourite !== previous.favourite
|| current.reblog !== previous.reblog
|| current.mention !== previous.mention
|| current.follow !== previous.follow
|| current.poll !== previous.poll
|| current.policy !== previous.policy
})
watch(() => currentUser.value?.pushSubscription, (subscription) => {
isSubscribed.value = !!subscription
pushNotificationData.value = createRawSettings(
subscription,
configuredPolicy.value[currentUser.value?.account?.acct ?? ''],
)
oldPushNotificationData.value = createRawSettings(
subscription,
configuredPolicy.value[currentUser.value?.account?.acct ?? ''],
)
}, { immediate: true, flush: 'post' })
const subscribe = async (
notificationData?: CreatePushNotification,
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policy?: mastodon.v1.WebPushSubscriptionPolicy,
force?: boolean,
): Promise<SubscriptionResult> => {
if (!isSupported)
return 'not-supported'
if (!currentUser.value)
return 'no-user'
const { pushSubscription, server, token, vapidKey, account: { acct } } = currentUser.value
if (!token || !server || !vapidKey)
return 'invalid-vapid-key'
// always request permission, browsers should remember user decision
const permission = await Promise.resolve(Notification.requestPermission()).then((p) => {
return p === 'default' ? 'prompt' : p
})
if (permission === 'denied') {
notificationPermission.value = permission
return 'notification-denied'
}
currentUser.value.pushSubscription = await createPushSubscription(
{
pushSubscription, server, token, vapidKey,
},
notificationData ?? {
alerts: {
follow: true,
favourite: true,
reblog: true,
mention: true,
poll: true,
},
},
policy ?? 'all',
force,
)
await nextTick()
notificationPermission.value = permission
hiddenNotification.value[acct] = true
return 'subscribed'
}
const unsubscribe = async () => {
if (!isSupported || !isSubscribed || !currentUser.value)
return false
await removePushNotifications(currentUser.value)
await removePushNotificationData(currentUser.value)
}
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const saveSettings = async (policy?: mastodon.v1.WebPushSubscriptionPolicy) => {
if (policy)
pushNotificationData.value.policy = policy
const current = pushNotificationData.value
oldPushNotificationData.value = {
favourite: current.favourite,
reblog: current.reblog,
mention: current.mention,
follow: current.follow,
poll: current.poll,
policy: current.policy,
}
if (policy)
configuredPolicy.value[currentUser.value!.account.acct ?? ''] = policy
else
configuredPolicy.value[currentUser.value!.account.acct ?? ''] = pushNotificationData.value.policy
await nextTick()
}
const undoChanges = () => {
const previous = oldPushNotificationData.value
pushNotificationData.value = {
favourite: previous.favourite,
reblog: previous.reblog,
mention: previous.mention,
follow: previous.follow,
poll: previous.poll,
policy: previous.policy,
}
configuredPolicy.value[currentUser.value!.account.acct ?? ''] = previous.policy
}
const updateSubscription = async () => {
if (currentUser.value) {
const previous = oldPushNotificationData.value
// const previous = history.value[0].snapshot
const data = {
alerts: {
follow: pushNotificationData.value.follow,
favourite: pushNotificationData.value.favourite,
reblog: pushNotificationData.value.reblog,
mention: pushNotificationData.value.mention,
poll: pushNotificationData.value.poll,
},
}
const policy = pushNotificationData.value.policy
const policyChanged = previous.policy !== policy
// to change policy we need to resubscribe
if (policyChanged)
await subscribe(data, policy, true)
else
currentUser.value.pushSubscription = await client.value.v1.push.subscription.update({ data })
policyChanged && await nextTick()
// force change policy when changed: watch is resetting it on push subscription update
await saveSettings(policyChanged ? policy : undefined)
}
}
return {
pushNotificationData,
saveEnabled,
undoChanges,
hiddenNotification,
isSupported,
isSubscribed,
notificationPermission,
updateSubscription,
subscribe,
unsubscribe,
}
}
function createRawSettings(
pushSubscription?: mastodon.v1.WebPushSubscription,
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subscriptionPolicy?: mastodon.v1.WebPushSubscriptionPolicy,
) {
return {
follow: pushSubscription?.alerts.follow ?? true,
favourite: pushSubscription?.alerts.favourite ?? true,
reblog: pushSubscription?.alerts.reblog ?? true,
mention: pushSubscription?.alerts.mention ?? true,
poll: pushSubscription?.alerts.poll ?? true,
policy: subscriptionPolicy ?? 'all',
}
}