Apply Bswup improvements (#12408)

src/Bswup/Bit.Bswup.Demo/wwwroot/service-worker.js

@@ -2,13 +2,15 @@
 
 self.assetsExclude = [/\.scp\.css$/, /weather\.json$/];
 self.caseInsensitiveUrl = true;
-self.precachedAssetsInclude = [/favicon\.ico$/, /icon-512\.png$/, /bit-bw-64\.png$/];
 
 self.externalAssets = [
     {
         "url": "not-found/script.file.js"
     }
 ];
+// 'lax' opts into best-effort installs: the demo intentionally references a non-existent
+// asset to exercise the progress / error reporting UI. Under the default 'strict' setting
+// that would abort the install. See README.md > errorTolerance.
 self.errorTolerance = 'lax';
 
 self.importScripts('_content/Bit.Bswup/bit-bswup.sw.js');

src/Bswup/Bit.Bswup.Demo/wwwroot/service-worker.published.js

@@ -2,7 +2,6 @@
 
 self.assetsExclude = [/\.scp\.css$/, /weather\.json$/];
 self.caseInsensitiveUrl = true;
-self.precachedAssetsInclude = [/favicon\.ico$/, /icon-512\.png$/, /bit-bw-64\.png$/];
 
 //self.externalAssets = [
 //    {

src/Bswup/Bit.Bswup/BswupProgress.razor

@@ -25,9 +25,16 @@
             </div>
             <p id="bit-bswup-percent">0 %</p>
             <ul id="bit-bswup-assets" style="display: @(ShowAssets ? "block" : "none");"></ul>
+            <div id="bit-bswup-error" class="bit-bswup-error" style="display: none;" role="alert">
+                <p class="bit-bswup-error-title">Update failed to install</p>
+                <p id="bit-bswup-error-message" class="bit-bswup-error-message"></p>
+                <pre id="bit-bswup-error-details" class="bit-bswup-error-details"></pre>
+                <button id="bit-bswup-error-retry" type="button">Retry</button>
+            </div>
         </div>
         <button id="bit-bswup-reload">Update ready to install!</button>
     }
-    <img style="display: none" src=""
-         onerror="BitBswupProgress.start(@(AutoReload ? "true" : "false"), @(ShowLogs ? "true" : "false"), @(ShowAssets ? "true" : "false"), '@(AppContainer)', @(HideApp ? "true" : "false"), @(AutoHide ? "true" : "false"), '@(Handler)')">
+    <script>
+        BitBswupProgress.start(@(AutoReload ? "true" : "false"), @(ShowLogs ? "true" : "false"), @(ShowAssets ? "true" : "false"), '@(AppContainer)', @(HideApp ? "true" : "false"), @(AutoHide ? "true" : "false"), '@(Handler)');
+    </script>
 </div>

src/Bswup/Bit.Bswup/Scripts/bit-bswup.progress.ts

@@ -22,6 +22,10 @@
         const percentEl = document.getElementById('bit-bswup-percent');
         const assetsEl = document.getElementById('bit-bswup-assets');
         const reloadButton = document.getElementById('bit-bswup-reload');
+        const errorEl = document.getElementById('bit-bswup-error');
+        const errorMessageEl = document.getElementById('bit-bswup-error-message');
+        const errorDetailsEl = document.getElementById('bit-bswup-error-details');
+        const errorRetryButton = document.getElementById('bit-bswup-error-retry');
 
         const appElOriginalDisplay = appEl && appEl.style.display;
 
@@ -100,13 +104,52 @@
                             reloadButton && (reloadButton.onclick = data.reload);
                         }
                         return showLogs_ ? console.log('new update is ready.') : undefined;
+
+                    case BswupMessage.error:
+                        // Reveal the install panel even if no progress event landed first
+                        // (manifest validation failures fire before any progress message).
+                        hideApp_ && appEl && (appEl.style.display = 'none');
+                        bswupEl && (bswupEl.style.display = 'block');
+
+                        if (errorEl) {
+                            errorEl.style.display = 'block';
+                            if (errorMessageEl) errorMessageEl.textContent = (data && data.message) || 'Service worker install failed.';
+                            if (errorDetailsEl) {
+                                const reasonText = data && data.reason ? `[${data.reason}] ` : '';
+                                const urlText = data && data.url ? `\nasset: ${data.url}` : '';
+                                const hashText = data && data.hash ? `\nhash: ${data.hash}` : '';
+                                errorDetailsEl.textContent = `${reasonText}${urlText}${hashText}`.trim();
+                            }
+                            if (errorRetryButton) {
+                                errorRetryButton.style.display = 'inline-block';
+                                errorRetryButton.onclick = () => {
+                                    if (data && typeof data.reload === 'function') {
+                                        data.reload();
+                                    } else {
+                                        window.location.reload();
+                                    }
+                                };
+                            }
+                        }
+                        // Always log errors regardless of showLogs - this is actionable info.
+                        console.error('BitBswup install error:', data);
+                        return;
                 }
             }
         }
     };
 
     function config(newConfig: IBswupProgressConfigs) {
         Object.assign(_config, newConfig);
+
+        // Keep the assets list visibility in sync when toggled at runtime.
+        // The <ul> is server-rendered with an inline display style based on the
+        // initial ShowAssets parameter, so flipping the config alone wouldn't
+        // reveal/hide it without also updating the element here.
+        if (newConfig.showAssets !== undefined) {
+            const assetsEl = document.getElementById('bit-bswup-assets');
+            if (assetsEl) assetsEl.style.display = newConfig.showAssets ? 'block' : 'none';
+        }
     }
 }());