feat: 1. using cache storage store image data; 2. get base64image before chat to api #5013

public/serviceWorker.js

@@ -1,10 +1,13 @@
 const CHATGPT_NEXT_WEB_CACHE = "chatgpt-next-web-cache";
+const CHATGPT_NEXT_WEB_FILE_CACHE = "chatgpt-next-web-file";
+let a="useandom-26T198340PX75pxJACKVERYMINDBUSHWOLF_GQZbfghjklqvwyzrict";let nanoid=(e=21)=>{let t="",r=crypto.getRandomValues(new Uint8Array(e));for(let n=0;n<e;n++)t+=a[63&r[n]];return t};
 
 self.addEventListener("activate", function (event) {
   console.log("ServiceWorker activated.");
 });
 
 self.addEventListener("install", function (event) {
+  self.skipWaiting();  // enable new version
   event.waitUntil(
     caches.open(CHATGPT_NEXT_WEB_CACHE).then(function (cache) {
       return cache.addAll([]);
@@ -12,4 +15,45 @@ self.addEventListener("install", function (event) {
   );
 });
 
-self.addEventListener("fetch", (e) => {});
+async function upload(request, url) {
+  const formData = await request.formData()
+  const file = formData.getAll('file')[0]
+  let ext = file.name.split('.').pop()
+  if (ext === 'blob') {
+    ext = file.type.split('/').pop()
+  }
+  const fileUrl = `${url.origin}/api/cache/${nanoid()}.${ext}`
+  // console.debug('file', file, fileUrl, request)
+  const cache = await caches.open(CHATGPT_NEXT_WEB_FILE_CACHE)
+  await cache.put(new Request(fileUrl), new Response(file, {
+    headers: {
+      'content-type': file.type,
+      'content-length': file.size,
+      'cache-control': 'no-cache', // file already store in disk
+      'server': 'ServiceWorker',
+    }
+  }))
+  return Response.json({ code: 0, data: fileUrl })
+}
+
+async function remove(request, url) {
+  const cache = await caches.open(CHATGPT_NEXT_WEB_FILE_CACHE)
+  const res = await cache.delete(request.url)
+  return Response.json({ code: 0 })
+}
+
+self.addEventListener("fetch", (e) => {
+  const url = new URL(e.request.url);
+  if (/^\/api\/cache/.test(url.pathname)) {
+    if ('GET' == e.request.method) {
+      e.respondWith(caches.match(e.request))
+    }
+    if ('POST' == e.request.method) {
+      e.respondWith(upload(e.request, url))
+    }
+    if ('DELETE' == e.request.method) {
+      e.respondWith(remove(e.request, url))
+    }
+  }
+});
+

public/serviceWorkerRegister.js

@@ -2,8 +2,15 @@ if ('serviceWorker' in navigator) {
   window.addEventListener('load', function () {
     navigator.serviceWorker.register('/serviceWorker.js').then(function (registration) {
       console.log('ServiceWorker registration successful with scope: ', registration.scope);
+      registration.update().then(res => {
+        console.log('ServiceWorker registration update: ', res);
+      });
     }, function (err) {
       console.error('ServiceWorker registration failed: ', err);
     });
+    navigator.serviceWorker.addEventListener('controllerchange', function() {
+      console.log('ServiceWorker controllerchange ');
+      window.location.reload(true);
+    });
   });
-}
+}