EnvelopeGenerator/EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Program.cs

using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
using EnvelopeGenerator.Server.Client.Services;
using EnvelopeGenerator.Server.Client.Options;
using DevExpress.Blazor.Reporting;
using DevExpress.XtraReports.Web.Extensions;
using DevExpress.DataAccess.Web;
using DevExpress.XtraReports.Services;
using System.Globalization;

var builder = WebAssemblyHostBuilder.CreateDefault(args);

var initialCulture = await ResolveInitialCultureAsync(builder.HostEnvironment.BaseAddress);
var cultureInfo = new CultureInfo(initialCulture);
CultureInfo.DefaultThreadCurrentCulture = cultureInfo;
CultureInfo.DefaultThreadCurrentUICulture = cultureInfo;

builder.Services.AddLocalization();

// Named HttpClient for API calls (both for services and DevExpress components)
builder.Services.AddHttpClient("EnvelopeGenerator.Server", client =>
{
    client.BaseAddress = new Uri(builder.HostEnvironment.BaseAddress);
});

// Default HttpClient (DevExpress PdfViewer requires this)
builder.Services.AddScoped(sp => new HttpClient 
{ 
    BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) 
});

// Configuration Options
builder.Services.Configure<PdfViewerOptions>(opts =>
    builder.Configuration.GetSection(PdfViewerOptions.SectionName).Bind(opts));

// Business Services
builder.Services.AddScoped<DocumentService>();
builder.Services.AddScoped<AuthService>();
builder.Services.AddScoped<AnnotationService>();
builder.Services.AddScoped<EnvelopeReceiverService>();
builder.Services.AddScoped<SignatureService>();
builder.Services.AddScoped<SignatureCacheService>();
builder.Services.AddSingleton<AppVersionService>();
builder.Services.AddScoped<EnvelopeService>();
builder.Services.AddScoped<LocalizationService>();
builder.Services.AddScoped<ReceiverService>();

// UI Preferences & Theme
builder.Services.AddScoped<UserPreferencesService>();
builder.Services.AddScoped<ThemeService>();

// Logo configuration (loaded once after login, in-memory cached)
builder.Services.AddScoped<CustomImagesService>();

// DevExpress WASM
builder.Services.AddDevExpressWebAssemblyBlazorPdfViewer();
builder.Services.AddDevExpressWebAssemblyBlazorReportViewer();

builder.Services.AddDevExpressBlazorReportingWebAssembly(configure => {
    configure.UseDevelopmentMode();
});

// Reporting Services
builder.Services.AddScoped<IDataSourceWizardJsonConnectionStorage, CustomDataSourceWizardJsonDataConnectionStorage>();
builder.Services.AddScoped<IJsonDataConnectionProviderFactory, CustomJsonDataConnectionProviderFactory>();
builder.Services.AddScoped<IObjectDataSourceWizardTypeProvider, ObjectDataSourceWizardCustomTypeProvider>();

DevExpress.Utils.DeserializationSettings.RegisterTrustedClass(typeof(EnvelopeGenerator.Server.Client.Data.DataItemList));
DevExpress.Utils.DeserializationSettings.RegisterTrustedClass(typeof(EnvelopeGenerator.Server.Client.PredefinedReports.Report));

builder.Services.AddSingleton<InMemoryReportStorageWebExtension>();
builder.Services.AddSingleton<ReportStorageWebExtension>(sp => sp.GetRequiredService<InMemoryReportStorageWebExtension>());
builder.Services.AddScoped<IReportProviderAsync, CustomReportProvider>();

ReportStorageWebExtension.RegisterExtensionGlobal(new InMemoryReportStorageWebExtension());

var host = builder.Build();
await FontLoader.LoadFonts(host.Services.GetRequiredService<IHttpClientFactory>(), new List<string> { "opensans.ttf" });
await host.RunAsync();

static async Task<string> ResolveInitialCultureAsync(string baseAddress)
{
    try
    {
        using var http = new HttpClient { BaseAddress = new Uri(baseAddress) };
        var response = await http.GetAsync("/api/Localization/lang");

        if (!response.IsSuccessStatusCode)
            return "de-DE";

        var value = await response.Content.ReadAsStringAsync();
        var culture = value.Trim().Trim('"');
        return string.IsNullOrWhiteSpace(culture) ? "de-DE" : culture;
    }
    catch
    {
        return "de-DE";
    }
}