1fde98ca79
- Add shared HealthResponse DTO in ChatAgent.Shared - Add HealthController API endpoint with CORS policy for localhost:5200 - Add ChatApiClient typed HttpClient wrapper in WASM client - Update Home.razor to display health check result on load - Simplify MainLayout to minimal centered layout - Add global imports for Services and Shared.Models - Replace app.css with clean Phase 1 light theme styles - Remove unused OpenAPI package from API project - All files include tutorial-style inline comments (CODE-01)
48 lines
2.3 KiB
C#
48 lines
2.3 KiB
C#
// Program.cs -- Blazor WebAssembly application entry point for ChatAgent.
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//
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// This is where the WASM client is configured and launched. Unlike a server-side
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// ASP.NET Core app, a Blazor WASM app runs entirely in the browser. The
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// WebAssemblyHostBuilder configures:
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// - Root components (what gets rendered into the HTML page)
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// - Services (dependency injection container, similar to server-side DI)
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// - Configuration (reads from wwwroot/appsettings.json)
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//
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// This file will grow as we add more services in later phases (e.g., chat state management).
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using Microsoft.AspNetCore.Components.Web;
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using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
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using ChatAgent.Client;
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using ChatAgent.Client.Services;
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var builder = WebAssemblyHostBuilder.CreateDefault(args);
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// Add<App>("#app") tells Blazor to render the App component inside the
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// <div id="app"> element in wwwroot/index.html. This is the "mount point"
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// for the entire Blazor component tree.
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builder.RootComponents.Add<App>("#app");
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// HeadOutlet allows Razor components to modify <head> elements (e.g., <title>)
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// using the <PageTitle> and <HeadContent> components. "head::after" means
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// content is appended after existing head elements.
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builder.RootComponents.Add<HeadOutlet>("head::after");
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// Read the API base URL from configuration.
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// In Blazor WASM, configuration comes from wwwroot/appsettings.json.
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// IMPORTANT: wwwroot/ files are PUBLIC -- they are downloaded to the browser.
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// Never put secrets (API keys, passwords) in appsettings.json for a WASM app.
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// The API key lives server-side in the ChatAgent.Api project.
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var apiBaseUrl = builder.Configuration["ApiBaseUrl"] ?? "https://localhost:7100";
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// AddHttpClient<ChatApiClient> registers a typed HttpClient using IHttpClientFactory.
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// IHttpClientFactory manages the underlying HttpMessageHandler lifetime to prevent
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// socket exhaustion (a common problem with raw HttpClient in long-running apps).
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// The lambda configures the client with the API base URL so ChatApiClient
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// does not need to know the URL -- it is injected with a pre-configured HttpClient.
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// In Blazor WASM, HttpClient uses the browser's Fetch API under the hood.
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builder.Services.AddHttpClient<ChatApiClient>(client =>
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{
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client.BaseAddress = new Uri(apiBaseUrl);
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});
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await builder.Build().RunAsync();
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