Feature: Add elegant PWA loading screen
Implemented a professional loading screen for the PWA to eliminate the "hang and wait" experience during app initialization. Changes: - Added full-screen gradient loading overlay with TeleShop branding - Implemented animated triple-ring spinner with smooth animations - Added automatic removal after PWA initialization (500ms fade-out) - Included 5-second fallback timeout to prevent infinite loading - Updated service worker cache version to v2 - Enhanced JWT validation to detect test/temporary keys - Updated appsettings.json with secure JWT key Design Features: - Purple/blue gradient background matching brand colors - Pulsing logo animation for visual interest - Staggered spinner rings with cubic-bezier easing - Fade-in-out loading text animation - Mobile-responsive design (scales appropriately on all devices) Technical Implementation: - Loading screen visible by default (no FOUC) - Removed via JavaScript when PWA manager initialization completes - Graceful fade-out animation before DOM removal - Console logging for debugging 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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@ -40,6 +40,22 @@
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@await RenderSectionAsync("Head", required: false)
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</head>
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<body>
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<!-- PWA Loading Screen -->
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<div id="pwa-loading-screen" class="pwa-loading-screen">
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<div class="pwa-loading-content">
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<div class="pwa-loading-logo">
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<i class="fas fa-store"></i>
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</div>
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<h1 class="pwa-loading-title">TeleShop</h1>
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<div class="pwa-loading-spinner">
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<div class="spinner-ring"></div>
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<div class="spinner-ring"></div>
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<div class="spinner-ring"></div>
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</div>
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<p class="pwa-loading-text">Loading your dashboard...</p>
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</div>
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</div>
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<header>
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<nav class="navbar navbar-expand-sm navbar-light bg-white">
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<div class="container-fluid">
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@ -55,8 +55,8 @@ public class ConfigurationValidationService
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throw new InvalidOperationException("🚨 CRITICAL: JWT Key not configured. Set Jwt:Key in appsettings.json");
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}
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// Check for the old hardcoded key
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if (jwtKey.Contains("ThisIsASuperSecretKey"))
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// Check for the old hardcoded keys
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if (jwtKey.Contains("ThisIsASuperSecretKey") || jwtKey.Contains("ThisIsATemporary"))
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{
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throw new InvalidOperationException("🚨 CRITICAL: Default JWT key detected. Generate a new secure key!");
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}
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@ -3,7 +3,7 @@
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"DefaultConnection": "Data Source=littleshop.db"
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},
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"Jwt": {
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"Key": "ThisIsATemporaryKeyFor-TestingPurposesOnlyGenerateSecureKey1234567890ABCDEF",
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"Key": "9xKmN3pQwR7vYzH4bFtJ8sLcE2nW6aVgDhU5kXmP1oZiAqBjCrTy0MxSfGdIlPeWuO",
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"Issuer": "LittleShop",
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"Audience": "LittleShop",
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"ExpiryInHours": 24
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@ -454,4 +454,150 @@ button, a, .clickable {
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color: #6b7280;
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font-size: 14px;
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margin-top: 5px;
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}
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/* ========================================
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PWA Loading Screen
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======================================== */
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.pwa-loading-screen {
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position: fixed;
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top: 0;
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left: 0;
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width: 100%;
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height: 100%;
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background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
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display: flex;
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align-items: center;
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justify-content: center;
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z-index: 9999;
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opacity: 1;
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transition: opacity 0.5s ease-out;
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}
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.pwa-loading-screen.fade-out {
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opacity: 0;
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pointer-events: none;
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}
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.pwa-loading-content {
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text-align: center;
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color: white;
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animation: slideUp 0.6s ease-out;
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}
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@keyframes slideUp {
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from {
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opacity: 0;
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transform: translateY(20px);
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}
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to {
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opacity: 1;
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transform: translateY(0);
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}
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}
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.pwa-loading-logo {
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font-size: 80px;
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margin-bottom: 20px;
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animation: pulse 2s ease-in-out infinite;
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}
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@keyframes pulse {
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0%, 100% {
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transform: scale(1);
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opacity: 1;
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}
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50% {
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transform: scale(1.1);
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opacity: 0.8;
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}
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}
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.pwa-loading-title {
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font-size: 36px;
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font-weight: 700;
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margin-bottom: 30px;
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letter-spacing: 2px;
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text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
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}
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.pwa-loading-spinner {
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position: relative;
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width: 80px;
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height: 80px;
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margin: 0 auto 30px;
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}
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.spinner-ring {
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position: absolute;
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width: 100%;
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height: 100%;
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border: 3px solid transparent;
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border-top-color: white;
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border-radius: 50%;
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animation: spin 1.5s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
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}
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.spinner-ring:nth-child(2) {
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width: 90%;
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height: 90%;
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top: 5%;
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left: 5%;
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border-top-color: rgba(255, 255, 255, 0.7);
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animation-delay: 0.2s;
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}
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.spinner-ring:nth-child(3) {
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width: 80%;
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height: 80%;
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top: 10%;
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left: 10%;
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border-top-color: rgba(255, 255, 255, 0.5);
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animation-delay: 0.4s;
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}
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@keyframes spin {
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0% {
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transform: rotate(0deg);
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}
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100% {
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transform: rotate(360deg);
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}
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}
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.pwa-loading-text {
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font-size: 16px;
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font-weight: 400;
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opacity: 0.9;
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animation: fadeInOut 2s ease-in-out infinite;
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}
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@keyframes fadeInOut {
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0%, 100% {
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opacity: 0.6;
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}
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50% {
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opacity: 1;
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}
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}
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/* Mobile optimizations */
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@media (max-width: 768px) {
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.pwa-loading-logo {
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font-size: 60px;
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}
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.pwa-loading-title {
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font-size: 28px;
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}
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.pwa-loading-spinner {
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width: 60px;
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height: 60px;
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}
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.pwa-loading-text {
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font-size: 14px;
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}
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}
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@ -38,6 +38,23 @@ class PWAManager {
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// Setup push notifications
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this.setupPushNotifications();
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// Hide loading screen after initialization
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this.hideLoadingScreen();
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}
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hideLoadingScreen() {
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const loadingScreen = document.getElementById('pwa-loading-screen');
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if (loadingScreen) {
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// Add fade-out class
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loadingScreen.classList.add('fade-out');
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// Remove from DOM after animation completes
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setTimeout(() => {
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loadingScreen.remove();
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console.log('PWA: Loading screen removed');
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}, 500);
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}
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}
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setupInstallPrompt() {
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@ -682,4 +699,17 @@ window.addEventListener('load', () => {
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// Network error, do nothing
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});
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}
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});
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});
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// Fallback: Ensure loading screen is removed after maximum timeout
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// This guarantees the loading screen won't stay visible indefinitely
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setTimeout(() => {
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const loadingScreen = document.getElementById('pwa-loading-screen');
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if (loadingScreen) {
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console.log('PWA: Removing loading screen via fallback timeout');
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loadingScreen.classList.add('fade-out');
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setTimeout(() => {
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loadingScreen.remove();
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}, 500);
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}
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}, 5000); // 5 second maximum
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@ -1,5 +1,5 @@
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// Service Worker for LittleShop Admin PWA
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const CACHE_NAME = 'littleshop-admin-v1';
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const CACHE_NAME = 'littleshop-admin-v2';
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const urlsToCache = [
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'/Admin/Dashboard',
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'/manifest.json',
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