implement web push

web/sw.js

@@ -1,47 +1,17 @@
-let ws
-let shouldRetry = false
+self.addEventListener('install', function (event) {
+    event.waitUntil(self.skipWaiting());
+});
 
-function start(location) {
-    shouldRetry = true
-    const port = self.location.port ? `:${self.location.port}` : ""
-    const socket = new WebSocket(`ws://${self.location.hostname}${port}/ws?location=${location}`)
-    socket.onopen = () => {
-        ws = socket
-    }
-    socket.onclose = () => {
-        reconnect()
-    }
-    socket.onerror = () => {
-        reconnect()
-    }
-    socket.onmessage = (event) => {
-        self.registration.showNotification("7am weather summary", {
-            body: event.data
-        })
-    }
-}
+self.addEventListener('activate', function (event) {
+    event.waitUntil(self.clients.claim());
+});
 
-function cancel() {
-    shouldRetry = false
-    if (ws) {
-        ws.close()
-        ws = null
+self.addEventListener("push", (event) => {
+    if (event.data) {
+        event.waitUntil(
+            self.registration.showNotification("7am weather summary", {
+                body: event.data.text()
+            })
+        )
     }
-}
-
-async function reconnect() {
-    while (shouldRetry) {
-        await new Promise((resolve) => {
-            setTimeout(resolve, 5 * 60 * 1000)
-        })
-        start(location)
-    }
-}
-
-self.addEventListener("message", (event) => {
-    if (event.data === "cancel") {
-        cancel()
-    } else {
-        start(event.data)
-    }
-})
+})