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<template>
<MkButton
v-if="supported && !pushRegistrationInServer"
type="button"
primary
:gradate="gradate"
:rounded="rounded"
:inline="inline"
:autofocus="autofocus"
:wait="wait"
:full="full"
@click="subscribe"
>
{{ i18n.ts.subscribePushNotification }}
</MkButton>
<MkButton
v-else-if="!showOnlyToRegister && ($i ? pushRegistrationInServer : pushSubscription)"
type="button"
:primary="false"
:gradate="gradate"
:rounded="rounded"
:inline="inline"
:autofocus="autofocus"
:wait="wait"
:full="full"
@click="unsubscribe"
>
{{ i18n.ts.unsubscribePushNotification }}
</MkButton>
<MkButton v-else-if="$i && pushRegistrationInServer" disabled :rounded="rounded" :inline="inline" :wait="wait" :full="full">
{{ i18n.ts.pushNotificationAlreadySubscribed }}
</MkButton>
<MkButton v-else-if="!supported" disabled :rounded="rounded" :inline="inline" :wait="wait" :full="full">
{{ i18n.ts.pushNotificationNotSupported }}
</MkButton>
</template>
<script setup lang="ts">
import { $i, getAccounts } from '@/account';
import MkButton from '@/components/MkButton.vue';
import { instance } from '@/instance';
import { api, apiWithDialog, promiseDialog } from '@/os';
import { i18n } from '@/i18n';
defineProps<{
primary?: boolean;
gradate?: boolean;
rounded?: boolean;
inline?: boolean;
link?: boolean;
to?: string;
autofocus?: boolean;
wait?: boolean;
danger?: boolean;
full?: boolean;
showOnlyToRegister?: boolean;
}>();
// ServiceWorker registration
let registration = $ref<ServiceWorkerRegistration | undefined>();
// If this browser supports push notification
let supported = $ref(false);
// If this browser has already subscribed to push notification
let pushSubscription = $ref<PushSubscription | null>(null);
let pushRegistrationInServer = $ref<{ state?: string; key?: string; userId: string; endpoint: string; sendReadMessage: boolean; } | undefined>();
function subscribe() {
if (!registration || !supported || !instance.swPublickey) return;
// SEE: https://developer.mozilla.org/en-US/docs/Web/API/PushManager/subscribe#Parameters
return promiseDialog(registration.pushManager.subscribe({
userVisibleOnly: true,
applicationServerKey: urlBase64ToUint8Array(instance.swPublickey),
})
.then(async subscription => {
pushSubscription = subscription;
// Register
pushRegistrationInServer = await api('sw/register', {
endpoint: subscription.endpoint,
auth: encode(subscription.getKey('auth')),
publickey: encode(subscription.getKey('p256dh')),
});
}, async err => { // When subscribe failed
// 通知が許可されていなかったとき
if (err?.name === 'NotAllowedError') {
console.info('User denied the notification permission request.');
return;
}
// 違うapplicationServerKey (または gcm_sender_id)のサブスクリプションが
// 既に存在していることが原因でエラーになった可能性があるので、
// そのサブスクリプションを解除しておく
// （これは実行されなさそうだけど、おまじない的に古い実装から残してある）
await unsubscribe();
}), null, null);
}
async function unsubscribe() {
if (!pushSubscription) return;
const endpoint = pushSubscription.endpoint;
const accounts = await getAccounts();
pushRegistrationInServer = undefined;
if ($i && accounts.length >= 2) {
apiWithDialog('sw/unregister', {
i: $i.token,
endpoint,
});
} else {
pushSubscription.unsubscribe();
apiWithDialog('sw/unregister', {
endpoint,
});
pushSubscription = null;
}
}
function encode(buffer: ArrayBuffer | null) {
return btoa(String.fromCharCode.apply(null, new Uint8Array(buffer)));
}
/**
* Convert the URL safe base64 string to a Uint8Array
* @param base64String base64 string
*/
function urlBase64ToUint8Array(base64String: string): Uint8Array {
const padding = '='.repeat((4 - base64String.length % 4) % 4);
const base64 = (base64String + padding)
.replace(/-/g, '+')
.replace(/_/g, '/');
const rawData = window.atob(base64);
const outputArray = new Uint8Array(rawData.length);
for (let i = 0; i < rawData.length; ++i) {
outputArray[i] = rawData.charCodeAt(i);
}
return outputArray;
}
if (navigator.serviceWorker == null) {
// TODO: よしなに？
} else {
navigator.serviceWorker.ready.then(async swr => {
registration = swr;
pushSubscription = await registration.pushManager.getSubscription();
if (instance.swPublickey && ('PushManager' in window) && $i && $i.token) {
supported = true;
if (pushSubscription) {
const res = await api('sw/show-registration', {
endpoint: pushSubscription.endpoint,
});
if (res) {
pushRegistrationInServer = res;
}
}
}
});
}
defineExpose({
pushRegistrationInServer: $$(pushRegistrationInServer),
});
</script>
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