using CoreAgent.Infrastructure.Extensions;
using CoreAgent.Infrastructure.Logging;
using Microsoft.AspNetCore.Builder;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Serilog;

namespace CoreAgent.API
{
    public class Startup
    {
        public IConfiguration Configuration { get; }
        public IHostEnvironment Environment { get; }

        public Startup(IConfiguration configuration, IHostEnvironment environment)
        {
            Configuration = configuration;
            Environment = environment;
        }

        public void ConfigureServices(IServiceCollection services)
        {

            // 添加基础设施服务
            services.AddInfrastructure(Configuration);

            // 添加控制器
            services.AddControllers();

            // 添加API文档
            services.AddEndpointsApiExplorer();
            services.AddSwaggerGen();
        }

        public void Configure(IApplicationBuilder app)
        {
            // 配置开发环境中间件
            if (Environment.IsDevelopment())
            {
                app.UseSwagger();
                app.UseSwaggerUI();
                Log.Debug("Swagger UI enabled in development environment");
            }

            // 使用基础设施中间件
            app.UseInfrastructure(Configuration);

            // 配置控制器路由
            app.UseRouting();
            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });
        }
    }

    public static class StartupExtensions
    {
        public static WebApplicationBuilder AddConfigurations(this WebApplicationBuilder builder)
        {
            const string configurationsDirectory = "Configurations";
            var env = builder.Environment;

            // 基础配置
            builder.Configuration
                .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
                .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true, reloadOnChange: true)
                .AddEnvironmentVariables();

            // 基础设施配置
            builder.Configuration
                .AddJsonFile($"{configurationsDirectory}/logger.json", optional: false, reloadOnChange: true)
                .AddJsonFile($"{configurationsDirectory}/logger.{env.EnvironmentName}.json", optional: true, reloadOnChange: true)
                .AddJsonFile($"{configurationsDirectory}/request-logging.json", optional: false, reloadOnChange: true)
                .AddJsonFile($"{configurationsDirectory}/request-logging.{env.EnvironmentName}.json", optional: true, reloadOnChange: true)
                .AddJsonFile($"{configurationsDirectory}/api-versioning.json", optional: false, reloadOnChange: true)
                .AddJsonFile($"{configurationsDirectory}/api-versioning.{env.EnvironmentName}.json", optional: true, reloadOnChange: true);

            return builder;
        }

        public static IServiceCollection AddInfrastructure(this IServiceCollection services, IConfiguration config)
        {
            return services
                .AddLoggingServices(config)
                .AddApiVersioningExtension(config)
                .AddRequestLogging(config)
                .AddAuthorization()
                .AddSwaggerGen();
        }

        public static IApplicationBuilder UseInfrastructure(this IApplicationBuilder app, IConfiguration config)
        {
            return app
                .UseHttpsRedirection()
                .UseExceptionMiddleware()
                .UseAuthorization()
                .UseRequestLogging(config)
                .UseApiVersioningExtension();
        }

        public static void ConfigureSwagger(this WebApplication app)
        {
            if (app.Environment.IsDevelopment())
            {
                app.UseSwagger();
                app.UseSwaggerUI();
            }
        }

        // 新增：创建Startup实例的扩展方法
        public static Startup CreateStartup(this WebApplicationBuilder builder)
        {
            return new Startup(builder.Configuration, builder.Environment);
        }
    }
}