package main

import (
	"app.yhyue.com/moapp/jybase/go-xweb/httpsession"
	"app.yhyue.com/moapp/jybase/go-xweb/xweb"
	"context"
	"fmt"
	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/credentials/insecure"
	"google.golang.org/grpc/health"
	"google.golang.org/grpc/health/grpc_health_v1"
	"google.golang.org/grpc/keepalive"
	"google.golang.org/grpc/metadata"
	"google.golang.org/grpc/status"
	"log"
	"net"
	"net/http"
	"os"
	"os/signal"
	. "rpc/chat"
	"rpc/config"
	_ "rpc/filter"
	"rpc/service"
	"sync"
	"syscall"
	"time"
)

type server struct {
	httpServer   *http.Server
	grpcServer   *grpc.Server
	healthServer *health.Server
	wg           sync.WaitGroup
	startTime    time.Time
}

func main() {
	// 初始化配置检查
	if config.DbConf == nil {
		log.Fatal("配置未初始化")
	}
	// 创建服务器实例
	srv := &server{
		startTime: time.Now(),
	}
	// 设置上下文
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()
	go func() {
		srv.initGRPCServer(config.DbConf.Password)
		// 启动服务
		srv.startServices()
		// 设置定时任务
		srv.setupTimedTasks(ctx)
		// 等待终止信号
		srv.waitForShutdown()

		// 优雅关闭
		srv.gracefulShutdown()
	}()

	// 初始化服务
	srv.initHTTPServer()

}

func (s *server) initHTTPServer() {
	// 1. 初始化xweb配置
	httpsession.IsRedisSessionStore = true
	httpsession.RedisNotLoginKey = "userId"
	xweb.Config.Profiler = true
	xweb.RootApp().BasePath = "/wxRobot"
	xweb.RootApp().AppConfig.StaticFileVersion = false
	xweb.RootApp().AppConfig.CheckXsrf = false
	xweb.RootApp().AppConfig.EnableHttpCache = false
	xweb.RootApp().AppConfig.Mode = xweb.Product
	xweb.RootApp().AppConfig.ReloadTemplates = true
	xweb.RootApp().AppConfig.SessionTimeout = 7 * 24 * time.Hour
	xweb.RootApp().Logger.SetOutputLevel(1)

	// 2. 注册控制器
	xweb.AddAction(&service.WXroBot{})
	mux1 := http.NewServeMux()
	xweb.RunBase(":"+config.DbConf.WebPort, mux1)
}
func (s *server) initGRPCServer(password string) {
	s.grpcServer = grpc.NewServer(
		grpc.Creds(insecure.NewCredentials()),
		grpc.ChainUnaryInterceptor(
			PasswordAuthInterceptor(password),
		),
		grpc.KeepaliveParams(keepalive.ServerParameters{
			Time:    10 * time.Minute,
			Timeout: 3 * time.Second,
		}),
		grpc.KeepaliveEnforcementPolicy(keepalive.EnforcementPolicy{
			MinTime:             30 * time.Second,
			PermitWithoutStream: true,
		}),
	)
	// 3. 注册服务
	RegisterChatServiceServer(s.grpcServer, service.Chatserver)
	s.healthServer = health.NewServer()
	grpc_health_v1.RegisterHealthServer(s.grpcServer, s.healthServer)
	s.healthServer.SetServingStatus("", grpc_health_v1.HealthCheckResponse_SERVING)
}

func (s *server) startServices() {
	// 只保留服务启动逻辑
	lis, err := net.Listen("tcp", fmt.Sprintf(":%s", config.DbConf.GrpcWebPort))
	if err != nil {
		log.Fatalf("无法监听gRPC端口 %s: %v", config.DbConf.GrpcWebPort, err)
	}

	go func() {
		log.Printf("gRPC服务已启动，监听端口 :%s [PID: %d]",
			config.DbConf.GrpcWebPort, os.Getpid())
		if err := s.grpcServer.Serve(lis); err != nil {
			log.Fatalf("gRPC服务启动失败: %v", err)
		}
	}()
}
func (s *server) setupTimedTasks(ctx context.Context) {
	tasks := []struct {
		interval time.Duration
		taskName string
	}{
		{1 * time.Minute, "sendTalk"},
		{12 * time.Hour, "getContacts"},
	}

	for _, task := range tasks {
		task := task // 创建局部变量
		s.wg.Add(1)
		go func() {
			defer s.wg.Done()
			service.Chatserver.StartTimedMessages(ctx, task.interval, task.taskName)
		}()
	}
}
func (s *server) waitForShutdown() {
	done := make(chan os.Signal, 1)
	signal.Notify(done, os.Interrupt, syscall.SIGINT, syscall.SIGTERM)

	<-done
	log.Printf("\n接收到关闭信号 [运行时间: %s]", time.Since(s.startTime).Round(time.Second))
}

func (s *server) gracefulShutdown() {
	// 标记服务为不健康
	s.healthServer.SetServingStatus("", grpc_health_v1.HealthCheckResponse_NOT_SERVING)

	// 创建关闭上下文
	shutdownCtx, shutdownCancel := context.WithTimeout(context.Background(), 15*time.Second)
	defer shutdownCancel()

	// 关闭HTTP服务器
	go func() {
		if err := s.httpServer.Shutdown(shutdownCtx); err != nil {
			log.Printf("HTTP服务关闭错误: %v", err)
		}
	}()

	// 关闭gRPC服务器
	grpcStopped := make(chan struct{})
	go func() {
		s.grpcServer.GracefulStop()
		close(grpcStopped)
	}()

	// 等待所有服务关闭或超时
	select {
	case <-grpcStopped:
		log.Println("gRPC服务已正常关闭")
	case <-shutdownCtx.Done():
		log.Println("警告: 优雅关闭超时，强制终止gRPC服务")
		s.grpcServer.Stop()
	}

	// 等待所有定时任务结束
	s.wg.Wait()

	log.Println("服务已完全关闭")
}

// 认证拦截器
func PasswordAuthInterceptor(password string) grpc.UnaryServerInterceptor {
	return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error) {
		// 从上下文中获取元数据
		md, ok := metadata.FromIncomingContext(ctx)
		if !ok {
			log.Printf("认证失败: 缺少元数据 (请求方法: %s)", info.FullMethod)
			return MessageAck{
				MessageId: "缺少认证信息",
			}, status.Error(codes.Unauthenticated, "缺少认证信息")
		}

		// 检查密码
		pass := md.Get("password")
		if len(pass) == 0 {
			log.Printf("认证失败: 未提供密码 (请求方法: %s)", info.FullMethod)
			return MessageAck{
				MessageId: "未提供密码",
			}, status.Error(codes.Unauthenticated, "未提供密码")
		}

		if pass[0] != password {
			log.Printf("认证失败: 密码错误 (请求方法: %s)", info.FullMethod)
			return MessageAck{
				MessageId: "密码错误",
			}, status.Error(codes.PermissionDenied, "密码错误")
		}

		log.Printf("认证成功 (请求方法: %s)", info.FullMethod)
		return handler(ctx, req)
	}
}