引入后端API项目并重构前后端桥接与路由

本次提交新增了 Avalonia-API（Web API）与 Avalonia-Services（业务服务）两个项目，完善了解决方案结构。重构了 Avalonia-PC 前端与后端的桥接逻辑，实现了基于前缀的路由分发、静态服务、开发者工具等功能。同步更新了 .gitignore、api.js 及相关配置文件，为后续业务扩展和维护打下基础。

Avalonia-API/Avalonia-API.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <RootNamespace>Avalonia_API</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="10.0.5" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Avalonia-Services\Avalonia-Services.csproj" />
+  </ItemGroup>
+
+</Project>

Avalonia-API/Avalonia-API.csproj.user

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <ActiveDebugProfile>https</ActiveDebugProfile>
+  </PropertyGroup>
+</Project>

Avalonia-API/Avalonia-API.http

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+@Avalonia_API_HostAddress = http://localhost:5206
+
+GET {{Avalonia_API_HostAddress}}/weatherforecast/
+Accept: application/json
+
+###

Avalonia-API/Configuration/ServicesConfiguration.cs

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+using Avalonia_Services.Services;
+
+namespace Avalonia_API.Configuration
+{
+    public static class ServicesConfiguration
+    {
+        public static void ConfigureServices(this IServiceCollection services)
+        {
+            // Register your services here
+            // For example:
+            // services.AddSingleton<IMyService, MyService>();
+            services.AddScoped<WeatherForecastService>();
+        }
+    }
+}

Avalonia-API/Controllers/WeatherForecastController.cs

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+using Avalonia_Services.Models;
+using Avalonia_Services.Services;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Avalonia_API.Controllers
+{
+    [ApiController]
+    [Route("[controller]")]
+    public class WeatherForecastController(WeatherForecastService weatherForecastService) : ControllerBase
+    {
+
+        private readonly WeatherForecastService _weatherForecastService = weatherForecastService;
+
+        [HttpGet(Name = "GetWeatherForecast")]
+        public IEnumerable<WeatherForecast> Get()
+        {
+            return _weatherForecastService.GetWeatherForecasts();
+        }
+    }
+}

Avalonia-API/Program.cs

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+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container.
+
+builder.Services.AddControllers();
+// Learn more about configuring OpenAPI at https://aka.ms/aspnet/openapi
+builder.Services.AddOpenApi();
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+if (app.Environment.IsDevelopment())
+{
+    app.MapOpenApi();
+}
+
+app.UseHttpsRedirection();
+
+app.UseAuthorization();
+
+app.MapControllers();
+
+app.Run();

Avalonia-API/Properties/launchSettings.json

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+{
+  "$schema": "https://json.schemastore.org/launchsettings.json",
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": false,
+      "applicationUrl": "http://localhost:5206",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": false,
+      "applicationUrl": "https://localhost:7165;http://localhost:5206",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

Avalonia-API/appsettings.Development.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

Avalonia-API/appsettings.json

@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}