using Fake.AspNetCore;
using Fake.AspNetCore.Auditing;
using Fake.AspNetCore.Authentication;
using Fake.AspNetCore.ExceptionHandling;
using Fake.AspNetCore.Newtonsoft;
using Fake.AspNetCore.Swagger;
using Fake.Autofac;
using Fake.FeiShu;
using Fake.Json;
using Fake.Messaging.Dashboard;
using Fake.Modularity;
using Fake.Security.Claims;
using Fake.Serilog;
using FluentValidation.AspNetCore;
using Hangfire;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.HttpOverrides;
using Microsoft.AspNetCore.Mvc.Authorization;
using OpenTelemetry.Resources;
using OpenTelemetry.Trace;
using TrackCenter.Application;
using TrackCenter.Application.Hangfire;
using TrackCenter.Repository;
using TrackCenter.Repository.Otel;
using TrackCenter.Repository.Otel.Options;
using TrackCenter.Application.Filters;

namespace TrackCenter.Api;

[DependsOn(typeof(FakeAutofacModule))]
[DependsOn(typeof(FakeAspNetCoreModule))]
[DependsOn(typeof(TrackCenterApplicationModule))]
[DependsOn(typeof(TrackCenterRepositoryModule))]
[DependsOn(typeof(FakeMessagingDashboardModule))]
[DependsOn(typeof(FakeSerilogModule))]
public class TrackCenterApiModule : FakeModule
{
    private const string DefaultCorsPolicyName = "default";

    public override void PreConfigureServices(ServiceConfigurationContext context)
    {
        FakeClaimTypes.UserId = "mapId";
    }

    public override void ConfigureServices(ServiceConfigurationContext context)
    {
        var services = context.Services;
        var configuration = context.Services.GetConfiguration();

        services.Configure<FakeAspNetCoreMvcOptions>(options =>
        {
            options.ApplicationServices2Controller<TrackCenterApplicationModule>();
        });

        // 配置签名验证选项
        services.Configure<SignatureValidationOptions>(configuration.GetSection("SignatureValidation"));

        // 全局授权配置：所有接口默认需要授权
        services.AddMvc(options =>
        {
            var policy = new AuthorizationPolicyBuilder()
                .RequireAuthenticatedUser()
                .Build();
            options.Filters.Add(new AuthorizeFilter(policy));
            // 添加签名验证过滤器
            options.Filters.Add<SignatureValidationFilter>();
        }).AddNewtonsoftJson();

        //Json格式化全局处理
        services.Configure<FakeJsonSerializerOptions>(options =>
        {
            options.InputDateTimeFormats.Add("yyyy-MM-dd HH:mm:ss");
            options.LongToString = true;
        });
        context.Services.AddFakeNewtonsoft();

        services.AddFakeSwaggerGen(addSecurity:true)
            .AddFakeAspNetCoreAuditing()
            .AddFeiShuNotification();

        services.AddFluentValidationAutoValidation().AddFluentValidationClientsideAdapters();

        var otelOptions = new OTelOptions()
        {
            EnableAspNetCore = true,
            EnableHttpClient = true,
            EnableSql = true
        };
        configuration.GetSection("OTel").Bind(otelOptions);
        ActivityHelper.InitActivitySource(otelOptions);
        services.AddOpenTelemetry()
            .ConfigureResource(resource => resource.AddService(otelOptions.ServiceName))
            .WithTracing(tracing =>
            {
                switch (otelOptions.SamplerType)
                {
                    case SamplerType.AlwaysOn:
                        tracing.SetSampler(new AlwaysOnSampler());
                        break;
                    case SamplerType.AlwaysOff:
                        tracing.SetSampler(new AlwaysOffSampler());
                        break;
                    case SamplerType.ParentBasedSampler:
                        {
                            Sampler childSampler = otelOptions.ChildBasedSampler switch
                            {
                                SamplerType.AlwaysOn => new AlwaysOnSampler(),
                                SamplerType.AlwaysOff => new AlwaysOffSampler(),
                                SamplerType.TraceIdRatio =>
                                    new TraceIdRatioBasedSampler(otelOptions.SamplerProbability),
                                _ => new AlwaysOnSampler(),
                            };
                            tracing.SetSampler(new ParentBasedSampler(childSampler));
                        }
                        break;
                    case SamplerType.TraceIdRatio:
                        tracing.SetSampler(new TraceIdRatioBasedSampler(otelOptions.SamplerProbability));
                        break;
                    default:
                        tracing.SetSampler(new AlwaysOnSampler());
                        break;
                }

                tracing.AddSource(otelOptions.ServiceName);
            });

        services.AddCors(options =>
        {
            options.AddPolicy(DefaultCorsPolicyName, builder =>
            {
                builder.WithOrigins(configuration.GetSection("App:CorsOrigins").Get<string[]>() ?? [])
                    .AllowAnyHeader()
                    .AllowAnyMethod()
                    .AllowCredentials();
            });
        });

        services.AddFakeJwtAuthentication();

        // 添加授权服务
        services.AddAuthorization();

        services.Configure<ForwardedHeadersOptions>(options =>
        {
            // 反向代理场景下恢复客户端真实来源信息，供 Swagger、鉴权和重定向等中间件使用
            options.ForwardedHeaders = ForwardedHeaders.XForwardedFor |
                                       ForwardedHeaders.XForwardedProto |
                                       ForwardedHeaders.XForwardedHost;
            options.KnownNetworks.Clear();
            options.KnownProxies.Clear();
        });
    }

    public override void ConfigureApplication(ApplicationConfigureContext context)
    {
        var app = context.GetWebApplication();
        var configuration = context.GetConfiguration();

        // 必须在读取 Scheme/Host/PathBase 的中间件之前执行，否则 Swagger 会生成错误的请求地址
        app.UseForwardedHeaders();

        app.Use(async (httpContext, next) =>
        {
            httpContext.Request.EnableBuffering();
            await next.Invoke();
        });

        // 虚拟路由-网关适配
        app.UsePathBase(app.Configuration["ASPNETCORE_PATHBASE"]);

        app.UseFakeExceptionHandling();

        app.MapControllers();
        // Configure the HTTP request pipeline.
        app.UseFakeSwagger();

        app.UseRouting();

        app.UseCors(DefaultCorsPolicyName);

        app.UseHangfireDashboard("/hangfire", new DashboardOptions
        {
            DisplayStorageConnectionString = false,
            IgnoreAntiforgeryToken = true,
            // 「返回站点」链接；PathBase 已由 UsePathBase 处理，勿再设 PrefixPath，否则会变成 /track/track/hangfire/...
            AppPath = configuration["ASPNETCORE_PATHBASE"],
            DashboardTitle = "轨迹预警任务",
            Authorization = [new AnonymousHangfireAuthorizationFilter()]
        });

        // 必须在 UsePathBase 之后：完整对外路径为 {PathBase}/eventbus
        app.UseFakeMessagingDashboard();

        app.Services.GetRequiredService<IFeiShuNotificationService>().Send("Application started");
    }
}