From 83759610fcd6677c7165439b26c30640e29c8152 Mon Sep 17 00:00:00 2001
From: Vito Van <vito@sdf.org>
Date: Sun, 23 Apr 2023 21:21:11 +0800
Subject: [PATCH] try fix coi-serviceworker on cairo page

---
 .github/workflows/gh-pages.yml |   3 +-
 coi-serviceworker.js           | 132 ---------------------------------
 2 files changed, 1 insertion(+), 134 deletions(-)
 delete mode 100644 coi-serviceworker.js

diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 0850f67..221aa5e 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -28,8 +28,7 @@ jobs:
         mv *.js web/
         mv *.wasm web/
         mv *.html web/
-        # https://github.com/gzuidhof/coi-serviceworker
-        sed 's|</head>|<script src="coi-serviceworker.js"></script></head>|' web/hello-pangocairo.original.html > web/hello-pangocairo.html
+        sed 's|</head>|<script>alert('This one won't work here due to CORS settings of Github Pages, please build and try this locally.');</script></head>|' web/hello-pangocairo.original.html > web/hello-pangocairo.html
     - name: Deploy GitHub Pages
       run: |
         git worktree add gh-pages
diff --git a/coi-serviceworker.js b/coi-serviceworker.js
deleted file mode 100644
index ec47291..0000000
--- a/coi-serviceworker.js
+++ /dev/null
@@ -1,132 +0,0 @@
-/*! coi-serviceworker v0.1.6 - Guido Zuidhof, licensed under MIT */
-let coepCredentialless = false;
-if (typeof window === 'undefined') {
-  self.addEventListener('install', () => self.skipWaiting());
-  self.addEventListener('activate', event =>
-    event.waitUntil(self.clients.claim()),
-  );
-
-  self.addEventListener('message', ev => {
-    if (!ev.data) {
-      return;
-    } else if (ev.data.type === 'deregister') {
-      self.registration
-        .unregister()
-        .then(() => {
-          return self.clients.matchAll();
-        })
-        .then(clients => {
-          clients.forEach(client => client.navigate(client.url));
-        });
-    } else if (ev.data.type === 'coepCredentialless') {
-      coepCredentialless = ev.data.value;
-    }
-  });
-
-  self.addEventListener('fetch', function(event) {
-    const r = event.request;
-    if (r.cache === 'only-if-cached' && r.mode !== 'same-origin') {
-      return;
-    }
-
-    const request =
-      coepCredentialless && r.mode === 'no-cors'
-        ? new Request(r, {
-            credentials: 'omit',
-          })
-        : r;
-    event.respondWith(
-      fetch(request)
-        .then(response => {
-          if (response.status === 0) {
-            return response;
-          }
-
-          const newHeaders = new Headers(response.headers);
-          newHeaders.set(
-            'Cross-Origin-Embedder-Policy',
-            coepCredentialless ? 'credentialless' : 'require-corp',
-          );
-          newHeaders.set('Cross-Origin-Opener-Policy', 'same-origin');
-
-          return new Response(response.body, {
-            status: response.status,
-            statusText: response.statusText,
-            headers: newHeaders,
-          });
-        })
-        .catch(e => console.error(e)),
-    );
-  });
-} else {
-  (() => {
-    // You can customize the behavior of this script through a global `coi` variable.
-    const coi = {
-      shouldRegister: () => true,
-      shouldDeregister: () => false,
-      coepCredentialless: () => false,
-      doReload: () => window.location.reload(),
-      quiet: false,
-      ...window.coi,
-    };
-
-    const n = navigator;
-
-    if (n.serviceWorker && n.serviceWorker.controller) {
-      n.serviceWorker.controller.postMessage({
-        type: 'coepCredentialless',
-        value: coi.coepCredentialless(),
-      });
-
-      if (coi.shouldDeregister()) {
-        n.serviceWorker.controller.postMessage({ type: 'deregister' });
-      }
-    }
-
-    // If we're already coi: do nothing. Perhaps it's due to this script doing its job, or COOP/COEP are
-    // already set from the origin server. Also if the browser has no notion of crossOriginIsolated, just give up here.
-    if (window.crossOriginIsolated !== false || !coi.shouldRegister()) return;
-
-    if (!window.isSecureContext) {
-      !coi.quiet &&
-        console.log(
-          'COOP/COEP Service Worker not registered, a secure context is required.',
-        );
-      return;
-    }
-
-    // In some environments (e.g. Chrome incognito mode) this won't be available
-    if (n.serviceWorker) {
-      n.serviceWorker.register(window.document.currentScript.src).then(
-        registration => {
-          !coi.quiet &&
-            console.log(
-              'COOP/COEP Service Worker registered',
-              registration.scope,
-            );
-
-          registration.addEventListener('updatefound', () => {
-            !coi.quiet &&
-              console.log(
-                'Reloading page to make use of updated COOP/COEP Service Worker.',
-              );
-            coi.doReload();
-          });
-
-          // If the registration is active, but it's not controlling the page
-          if (registration.active && !n.serviceWorker.controller) {
-            !coi.quiet &&
-              console.log(
-                'Reloading page to make use of COOP/COEP Service Worker.',
-              );
-            coi.doReload();
-          }
-        },
-        err => {
-          !coi.quiet &&
-            console.error('COOP/COEP Service Worker failed to register:', err);
-        },
-      );
-    }
-  })();
-}