feat: add application preloader, identity roles, and resilient database initialization with automated seeding

2026-05-01 09:07:26 +02:00
parent 0210611edf
commit 47bffd629f
11 changed files with 262 additions and 21 deletions
@@ -5,7 +5,6 @@
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <base href="/" />
-    <ResourcePreloader />
    <link rel="stylesheet" href="_content/NexusReader.UI.Shared/app.css" />
    <link rel="stylesheet" href="NexusReader.Web.styles.css" />
    <ImportMap />
@@ -14,9 +13,35 @@
 </head>

 <body>
+    <div id="app-preloader">
+        <div class="preloader-spinner"></div>
+        <div class="preloader-text">Nexus Reader</div>
+    </div>
+
    <NexusReader.UI.Shared.Routes @rendermode="InteractiveAuto" />
    <ReconnectModal />
    <script src="_framework/blazor.web.js"></script>
+    <script>
+        (function() {
+            function hidePreloader() {
+                const preloader = document.getElementById('app-preloader');
+                if (preloader) {
+                    preloader.classList.add('loaded');
+                    // Completely remove from DOM after transition for better accessibility
+                    setTimeout(() => preloader.style.display = 'none', 1000);
+                }
+            }
+
+            if (document.readyState === 'complete') {
+                hidePreloader();
+            } else {
+                window.addEventListener('load', hidePreloader);
+            }
+            
+            // Fallback: If for some reason 'load' doesn't fire (e.g. big assets), hide after 3s anyway
+            setTimeout(hidePreloader, 3000);
+        })();
+    </script>
 </body>


@@ -81,6 +81,7 @@ builder.Services.AddAuthentication(options =>
    });

 builder.Services.AddIdentityApiEndpoints<NexusUser>()
+    .AddRoles<IdentityRole>()
    .AddEntityFrameworkStores<AppDbContext>();

 builder.Services.ConfigureApplicationCookie(options =>
@@ -113,11 +114,38 @@ builder.Services.Configure<IdentityOptions>(options =>

 var app = builder.Build();

-// Ensure Database is initialized
+// Ensure Database is initialized and seeded
 using (var scope = app.Services.CreateScope())
 {
-    var dbContext = scope.ServiceProvider.GetRequiredService<NexusReader.Infrastructure.Persistence.AppDbContext>();
-    await dbContext.Database.MigrateAsync();
+    var services = scope.ServiceProvider;
+    var logger = services.GetRequiredService<ILogger<Program>>();
+    var dbContext = services.GetRequiredService<NexusReader.Infrastructure.Persistence.AppDbContext>();
+    
+    int maxRetries = 5;
+    int delayMs = 2000;
+    
+    for (int i = 0; i < maxRetries; i++)
+    {
+        try
+        {
+            logger.LogInformation("Próba połączenia z bazą danych (próba {Attempt}/{MaxRetries})...", i + 1, maxRetries);
+            await dbContext.Database.MigrateAsync();
+            await DbInitializer.SeedAsync(services);
+            logger.LogInformation("Baza danych zainicjowana pomyślnie.");
+            break;
+        }
+        catch (Npgsql.NpgsqlException ex) when (i < maxRetries - 1)
+        {
+            logger.LogWarning("Błąd połączenia z bazą danych: {Message}. Ponowna próba za {Delay}ms...", ex.Message, delayMs);
+            await Task.Delay(delayMs);
+            delayMs *= 2; // Exponential backoff
+        }
+        catch (Exception ex)
+        {
+            logger.LogCritical(ex, "Krytyczny błąd podczas inicjalizacji bazy danych.");
+            throw;
+        }
+    }
 }

 // Configure the HTTP request pipeline.
@@ -26,5 +26,6 @@
      "Model": "gemini-2.5-flash-lite",
      "MaxOutputTokens": 8192
    }
-  }
+  },
+  "ApiBaseUrl": "http://localhost:5000"
 }