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/// <reference types="@sveltejs/kit" />
/// <reference no-default-lib="true"/>
/// <reference lib="esnext" />
/// <reference lib="webworker" />
self.addEventListener('install', (event) => {
self.skipWaiting();
});
self.addEventListener('activate', (event) => {
event.waitUntil(self.clients.claim());
});
// ###### Handle unread badge:
const conversationReadStatus = {
// Format:
// conversationId: { lastRead: Optional(Datetime), lastMessage: Datetime }
};
function countUnreadChannels() {
console.debug(conversationReadStatus);
return Object.entries(conversationReadStatus)
.map(([conversationId, { lastRead, lastMessage }]) => {
const unread = (!lastRead || (lastRead < lastMessage)) ? 1 : 0;
if (unread) { console.debug(`Found unread in ${conversationId}`, lastRead, lastMessage); }
return unread;
})
.reduce((total, current) => total + current, 0);
}
self.addEventListener('push', (event) => {
// Let's show a notification right away so Safari doesn't tell Apple to be
// mad at us:
event.waitUntil(
self.registration.showNotification('Test notification', {
actions: [],
body: event.data.text(),
}),
);
const data = event.data?.json();
// Now we can do slower things that might fail:
conversationReadStatus[data.conversation] ||= { lastRead: null, lastMessage: null };
conversationReadStatus[data.conversation].lastMessage = new Date();
console.debug(
`Last message in ${data.conversation}`,
conversationReadStatus[data.conversation].lastMessage,
);
event.waitUntil(
(async () => {
if (navigator.setAppBadge) {
navigator.setAppBadge(countUnreadChannels());
}
})(),
);
});
// The client has to tell us when it has read a conversation:
self.addEventListener('message', (event) => {
const data = event.data;
switch (data.type) {
case 'CONVERSATION_READ':
conversationReadStatus[data.conversationId] ||= { lastRead: null, lastMessage: null };
if (data.at) {
console.debug('Found data.at', new Date(data.at.ts));
conversationReadStatus[data.conversationId].lastRead = new Date(data.at.ts);
} else {
console.debug('Found no data.at');
conversationReadStatus[data.conversationId].lastRead = new Date();
}
console.debug(
`Last read in ${data.conversationId}`,
conversationReadStatus[data.conversationId].lastRead,
);
event.waitUntil(
(async () => {
if (navigator.setAppBadge) {
navigator.setAppBadge(countUnreadChannels());
}
})(),
);
break;
default:
break;
}
});
|
