stacker.news/api/webPush/index.js

79 lines
2.5 KiB
JavaScript

import webPush from 'web-push'
import models from '../models'
webPush.setVapidDetails(
process.env.VAPID_MAILTO,
process.env.NEXT_PUBLIC_VAPID_PUBKEY,
process.env.VAPID_PRIVKEY
)
const createPayload = (notification) => {
// https://web.dev/push-notifications-display-a-notification/#visual-options
const { title, ...options } = notification
return JSON.stringify({
title,
options: {
timestamp: Date.now(),
icon: '/android-chrome-96x96.png',
...options
}
})
}
const createUserFilter = (tag) => {
// filter users by notification settings
const tagMap = {
REPLY: 'noteAllDescendants',
MENTION: 'noteMentions',
TIP: 'noteItemSats'
}
const key = tagMap[tag.split('-')[0]]
return key ? { user: { [key]: true } } : undefined
}
const sendNotification = (subscription, payload) => {
const { id, endpoint, p256dh, auth } = subscription
return webPush.sendNotification({ endpoint, keys: { p256dh, auth } }, payload)
.catch((err) => {
if (err.statusCode === 400) {
console.log('[webPush] invalid request: ', err)
} else if (err.statusCode === 403) {
console.log('[webPush] auth error: ', err)
} else if (err.statusCode === 404 || err.statusCode === 410) {
console.log('[webPush] subscription has expired or is no longer valid: ', err)
return models.pushSubscription.delete({ where: { id } })
} else if (err.statusCode === 413) {
console.log('[webPush] payload too large: ', err)
} else if (err.statusCode === 429) {
console.log('[webPush] too many requests: ', err)
} else {
console.log('[webPush] error: ', err)
}
})
}
export async function sendUserNotification (userId, notification) {
try {
const userFilter = createUserFilter(notification.tag)
const payload = createPayload(notification)
const subscriptions = await models.pushSubscription.findMany({
where: { userId, ...userFilter }
})
await Promise.allSettled(
subscriptions.map(subscription => sendNotification(subscription, payload))
)
} catch (err) {
console.log('[webPush] error sending user notification: ', err)
}
}
export async function replyToSubscription (subscriptionId, notification) {
try {
const payload = createPayload(notification)
const subscription = await models.pushSubscription.findUnique({ where: { id: subscriptionId } })
await sendNotification(subscription, payload)
} catch (err) {
console.log('[webPush] error sending subscription reply: ', err)
}
}