71 lines
1.8 KiB
JavaScript
71 lines
1.8 KiB
JavaScript
import * as FSAccess from "./store-directory-handle.js";
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self.addEventListener('install', ()=>{console.log("SW INSTALL"); return self.skipWaiting()}); // Activate worker immediately);
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self.addEventListener('activate', ()=>{
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console.log("SW ACTIVATE");
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return self.clients.claim();
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}); // Become available to all pages);
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self.addEventListener('fetch', (event) =>event.respondWith(Interceptor(event)));
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const options = {
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headers: {
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'Content-Type': 'application/javascript',
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'Cache-Control': 'no-cache'
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}
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}
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/** @type {(event:{request:Request})=>Promise<Response>} */
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async function Interceptor(event)
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{
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const url = new URL(event.request.url);
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const pathname = url.pathname.substring(1);
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let parts = pathname.split("/");
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if(parts[0] == "graph" || parts[0] == "store")
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{
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console.log("intercept:", pathname);
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const handle = await FSAccess.getDirectoryHandle();
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if(event.request.method == "PUT")
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{
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console.log("put operation");
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const payloadJSON = await event.request.clone().json();
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let text = await FSAccess.Read(handle, parts) || "{}";
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const fileJSON = JSON.parse(text);
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for(const key in payloadJSON)
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{
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const value = payloadJSON[key];
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let field = fileJSON[key];
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if(!field)
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{
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field = [];
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fileJSON[key] = field;
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}
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field.push(value);
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}
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console.log(`incoming:`, payloadJSON);
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console.log(`outgoing:`, fileJSON);
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text = JSON.stringify(fileJSON, null, 2);
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const result = await FSAccess.Write(handle, parts, text);
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return new Response(result+"", options);
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}
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const text = await FSAccess.Read(handle, parts);
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if(text)
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{
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return new Response(text, options);
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}
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}
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return fetch(event.request);
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}
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