import * as FSAccess from "./store-directory-handle.js";

self.addEventListener('install', ()=> self.skipWaiting()); // Activate worker immediately);
self.addEventListener('activate', ()=> self.clients.claim()); // Become available to all pages);
self.addEventListener('fetch', (event) =>event.respondWith(Interceptor(event)));

/** @type {(event:{request:Request})=>Promise<Response>} */
async function Interceptor(event)
{
  const url = new URL(event.request.url);
  const pathname = url.pathname.substring(1);
  let parts = pathname.split("/");

  if(parts[0] == "fsx")
  {
    parts = parts.slice(1);
    console.log("intercept:", pathname);

    if(parts[0] == "room")
    {
      parts[parts.length-1] = parts[parts.length-1]+".json";
    }

    const handle = await FSAccess.getDirectoryHandle();
    if(handle)
    {
      if(event.request.method == "PUT")
      {
        const body = await event.request.text();
        console.log("PUT intercept", parts, body);
        const fileHandle = await FSAccess.drilldown(handle, parts, true);

        if(fileHandle)
        {
          
          const writeable = await fileHandle.createWritable();
          await writeable.write(body);
          await writeable.close();
          return new Response("OK", {
            headers: {
              'Content-Type': 'application/javascript',
              'Cache-Control': 'no-cache'
            }
          });
        }
        else
        {
          return new Response("404", {status:404});
        }
      }

      const fileHandle = await FSAccess.drilldown(handle, parts);
      if(fileHandle)
      {
        const file = await fileHandle.getFile();
        const content = await file.text();

        return new Response(content, {
          headers: {
            'Content-Type': 'application/javascript',
            'Cache-Control': 'no-cache'
          }
        });
      }
    }

    console.log("couldnt find:", pathname);
    return new Response("404", {status:404});
    
  }
  else
  {
    return fetch(event.request);
  }
}