using Avalonia_EFCore.Database;
using Avalonia_Services.Core;
using Avalonia_Services.Endpoints;
using Avalonia_Services.Services;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;

namespace Avalonia_API.Configuration
{
    public static class ServicesConfiguration
    {
        /// <summary>
        /// 注册统一端点及其依赖的服务（含数据库）。
        /// 所有业务端点定义在 Avalonia-Services/Endpoints/AppEndpoints.cs。
        /// </summary>
        public static IServiceCollection AddUnifiedApiServices(this IServiceCollection services, IConfiguration configuration)
        {
            // ---- 数据库 ----
            // 从 appsettings.json 读取 DatabaseConfiguration 节
            // 注册默认数据库提供程序（SQLite / MySQL / PostgreSQL / SqlServer）
            DatabaseProviderRegistry.RegisterDefaults();

            var databaseConfig = configuration
                .GetSection(nameof(DatabaseConfiguration))
                .Get<DatabaseConfiguration>()
                ?? DatabaseConfiguration.ForSQLite("app.db");

            // 注册 AppDataContext（共享数据上下文）
            services.AddAppDatabase<AppDataContext>(databaseConfig);

            // ---- 业务服务 ----
            services.AddScoped<WeatherForecastService>();

            // ---- 统一端点 ----
            var endpointBuilder = new ServiceEndpointBuilder();
            AppEndpoints.Configure(endpointBuilder);
            var endpoints = endpointBuilder.Build();
            services.AddSingleton(endpoints);

            return services;
        }
    }
}