feat: implement epub service, navigation service, and global error boundary with updated reader UI layouts

src/NexusReader.Web.Client/Program.cs

@@ -1,18 +1,23 @@
-using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
-using NexusReader.Application.Abstractions.Services;
-using NexusReader.Web.Client.Services;
-using NexusReader.UI.Shared.Services;
-using NexusReader.Application;
-using NexusReader.Infrastructure;
-
-var builder = WebAssemblyHostBuilder.CreateDefault(args);
-
-builder.Services.AddScoped<IPlatformService, WebPlatformService>();
-builder.Services.AddScoped<IThemeService, ThemeService>();
-builder.Services.AddScoped<IQuizStateService, QuizStateService>();
-builder.Services.AddScoped<IFocusModeService, FocusModeService>();
-
-builder.Services.AddApplication();
-builder.Services.AddInfrastructure();
-
-await builder.Build().RunAsync();
+using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
+using NexusReader.Application.Abstractions.Services;
+using NexusReader.Web.Client.Services;
+using NexusReader.UI.Shared.Services;
+using NexusReader.Application;
+using NexusReader.Infrastructure;
+using NexusReader.Infrastructure.Services;
+
+var builder = WebAssemblyHostBuilder.CreateDefault(args);
+
+builder.Services.AddScoped<IPlatformService, WebPlatformService>();
+builder.Services.AddScoped<IThemeService, ThemeService>();
+builder.Services.AddScoped<IQuizStateService, QuizStateService>();
+builder.Services.AddScoped<IFocusModeService, FocusModeService>();
+builder.Services.AddScoped<IReaderNavigationService, ReaderNavigationService>();
+
+builder.Services.AddScoped(sp => new HttpClient { BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) });
+
+builder.Services.AddApplication();
+builder.Services.AddScoped<IEpubService, WasmEpubService>();
+builder.Services.AddTransient<IAiGenerateQuizService, FakeAiGenerateQuizService>();
+
+await builder.Build().RunAsync();

src/NexusReader.Web.Client/Services/WasmEpubService.cs

@@ -0,0 +1,38 @@
+using System.Net.Http.Json;
+using FluentResults;
+using NexusReader.Application.Abstractions.Services;
+using NexusReader.Application.Queries.Reader;
+
+namespace NexusReader.Web.Client.Services;
+
+public class WasmEpubService : IEpubService
+{
+    private readonly HttpClient _httpClient;
+
+    public WasmEpubService(HttpClient httpClient)
+    {
+        _httpClient = httpClient;
+    }
+
+    public async Task<Result<ReaderPageViewModel>> GetEpubContentAsync(int chapterIndex)
+    {
+        try
+        {
+            var response = await _httpClient.GetAsync($"/api/epub/{chapterIndex}");
+            if (response.IsSuccessStatusCode)
+            {
+                var viewModel = await response.Content.ReadFromJsonAsync<ReaderPageViewModel>();
+                return viewModel != null ? Result.Ok(viewModel) : Result.Fail("Failed to deserialize response.");
+            }
+            
+            // Try to read the error message from the body
+            var errorBody = await response.Content.ReadAsStringAsync();
+            return Result.Fail($"Server error ({response.StatusCode}): {errorBody}");
+        }
+        catch (Exception ex)
+        {
+            // Fallback for network errors or parsing exceptions
+            return Result.Fail(new Error($"Network or parsing error: {ex.Message}").CausedBy(ex));
+        }
+    }
+}