/* 現場ReNote — PWA（設置フォルダ相対） */
const CACHE = 'genba-note-pwa-2.1';
const SHELL = [
  './index.html',
  './genbatabs.html',
  './setup.html',
  './genba-note-core.js',
  './progress-vendor-blocks.js',
  './design-tokens.css',
  './genba-ui.css',
  './manifest.webmanifest',
  './icon-192.png',
  './icon-512.png',
  './icon-maskable-512.png',
  './apple-touch-icon.png',
  './ReNote_logo_144.png',
  './README.md',
  './tenants.json',
  './assets/genbatabs-license.css',
  './assets/genbatabs-license.js',
  './progress.html',
  './labor.html',
  './daily.html',
  './quality.html',
  './checklist/precheck.html',
  './checklist/spec.html',
  './roster/gc.html',
  './roster/crew.html',
  './roster/leaders.html'
];

self.addEventListener('install', (e) => {
  e.waitUntil(
    caches.open(CACHE).then((c) => c.addAll(SHELL)).then(() => self.skipWaiting())
  );
});

let SCOPE_PREFIX = '';

self.addEventListener('activate', (e) => {
  e.waitUntil(
    caches.keys().then((keys) =>
      Promise.all(keys.filter((k) => k !== CACHE).map((k) => caches.delete(k)))
    ).then(() => {
      SCOPE_PREFIX = self.registration.scope;
      return self.clients.claim();
    })
  );
});

self.addEventListener('fetch', (e) => {
  if (e.request.method !== 'GET') return;
  const url = new URL(e.request.url);
  if (url.origin !== self.location.origin) return;
  const scope = SCOPE_PREFIX || (self.registration && self.registration.scope) || '';
  if (scope && !url.href.startsWith(scope)) return;

  e.respondWith(
    fetch(e.request)
      .then((res) => {
        if (res && res.status === 200) {
          const copy = res.clone();
          caches.open(CACHE).then((c) => c.put(e.request, copy));
        }
        return res;
      })
      .catch(() => caches.match(e.request).then((r) => r || caches.match('./index.html')))
  );
});