expo/build/Notifications/ExponentNotificationsHelper.web.js

import { CodedError } from '@unimodules/core';
import Constants from 'expo-constants';
import { Platform } from 'react-native';
export function guardPermission() {
    if (!('Notification' in window)) {
        throw new Error('The Notification API is not available on this device.');
    }
    if (!navigator.serviceWorker) {
        throw new Error('Notifications cannot be used because the service worker API is not supported on this device. This might also happen because your web page does not support HTTPS.');
    }
    if (Notification.permission !== 'granted') {
        throw new Error('Cannot use Notifications without permissions. Please request permissions with `expo-permissions`');
    }
}
export async function getExponentPushTokenAsync() {
    if (!Constants.manifest.owner || !Constants.manifest.slug) {
        throw new CodedError('E_NOTIFICATIONS_PUSH_WEB_MISSING_CONFIG', 'You must provide `owner` and `slug` in `app.json` to use push notifications on web. Learn more: https://docs.expo.io/versions/latest/guides/using-vapid/.');
    }
    const data = await _subscribeUserToPushAsync();
    const experienceId = `@${Constants.manifest.owner}/${Constants.manifest.slug}`;
    const tokenArguments = {
        deviceId: Constants.installationId,
        experienceId,
        // Also uses `experienceId` for `appId` because there's no `appId` for web.
        appId: experienceId,
        deviceToken: JSON.stringify(data),
        type: 'web',
    };
    const response = await fetch('https://exp.host/--/api/v2/push/getExpoPushToken', {
        method: 'POST',
        body: JSON.stringify(tokenArguments),
    })
        .then(response => {
        if (!response.ok) {
            throw new Error(response.statusText);
        }
        return response;
    })
        .then(response => response.json())
        .catch(error => {
        throw new CodedError('E_NOTIFICATIONS_TOKEN_REGISTRATION_FAILED', 'The device was unable to register for remote notifications with Expo. (' + error + ')');
    });
    return response.data.expoPushToken;
}
export async function getDevicePushTokenAsync() {
    const data = await _subscribeUserToPushAsync();
    return { type: Platform.OS, data };
}
async function _subscribeUserToPushAsync() {
    if (!Constants.manifest.notification || !Constants.manifest.notification.vapidPublicKey) {
        throw new CodedError('E_NOTIFICATIONS_PUSH_WEB_MISSING_CONFIG', 'You must provide `notification.vapidPublicKey` in `app.json` to use push notifications on web. Learn more: https://docs.expo.io/versions/latest/guides/using-vapid/.');
    }
    guardPermission();
    const registration = await navigator.serviceWorker.register('/expo-service-worker.js');
    await navigator.serviceWorker.ready;
    if (!registration.active) {
        throw new Error('Notifications might not be working because the service worker API is not active.');
    }
    const subscribeOptions = {
        userVisibleOnly: true,
        applicationServerKey: _urlBase64ToUint8Array(Constants.manifest.notification.vapidPublicKey),
    };
    const pushSubscription = await registration.pushManager
        .subscribe(subscribeOptions)
        .catch(error => {
        throw new CodedError('E_NOTIFICATIONS_PUSH_WEB_TOKEN_REGISTRATION_FAILED', 'The device was unable to register for remote notifications with the browser endpoint. (' +
            error +
            ')');
    });
    const pushSubscriptionJson = pushSubscription.toJSON();
    const subscriptionObject = {
        endpoint: pushSubscriptionJson.endpoint,
        keys: {
            p256dh: pushSubscriptionJson.keys.p256dh,
            auth: pushSubscriptionJson.keys.auth,
        },
    };
    // Store notification icon string in service worker.
    // This message is received by `/expo-service-worker.js`.
    // We wrap it with `fromExpoWebClient` to make sure other message
    // will not override content such as `notificationIcon`.
    // https://stackoverflow.com/a/35729334/2603230
    const notificationIcon = (Constants.manifest.notification || {}).icon;
    await registration.active.postMessage(JSON.stringify({ fromExpoWebClient: { notificationIcon } }));
    return subscriptionObject;
}
// https://github.com/web-push-libs/web-push#using-vapid-key-for-applicationserverkey
function _urlBase64ToUint8Array(base64String) {
    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;
}
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