package networkdiagnostic

import (
	networkDiagnostic "cfTest/networkdiagnostic/pb"
	"context"
	"github.com/go-ping/ping"
	"github.com/sirupsen/logrus"
	"gopkg.in/natefinch/lumberjack.v2"
	"runtime"
	"time"
)

var logger *logrus.Logger

type NetworkDiagnosticServer struct {
	networkDiagnostic.UnimplementedNetworkDiagnosticServiceServer
}

func (s *NetworkDiagnosticServer) NetworkLatencyProbe(ctx context.Context, probeRequest *networkDiagnostic.NetworkLatencyProbeRequest) (*networkDiagnostic.NetworkLatencyProbeReply, error) {
	logger.Println("domainName Received: ", probeRequest.GetDomainName())
	logger.Println("execCount Received: ", probeRequest.GetExecCount())
	logger.Println("interval Received: ", probeRequest.GetInterval())

	// 业务请求 -> ping
	pinger, err := ping.NewPinger(probeRequest.GetDomainName())
	if err != nil {
		return &networkDiagnostic.NetworkLatencyProbeReply{
			Error: err.Error(),
		}, nil
	}
	pinger.Count = int(probeRequest.GetExecCount())
	pinger.Timeout = 5 * time.Second
	pinger.Interval = time.Duration(probeRequest.GetInterval()) * time.Second
	if runtime.GOOS == "windows" {
		pinger.SetPrivileged(true)
	}
	err = pinger.Run()
	if err != nil {
		return &networkDiagnostic.NetworkLatencyProbeReply{
			Error: err.Error(),
		}, nil
	}
	status := pinger.Statistics()

	// response
	return &networkDiagnostic.NetworkLatencyProbeReply{
		Latency:        float64(status.AvgRtt.Milliseconds()),
		PacketsReceive: int32(status.PacketsRecv),
		PacketsSend:    int32(status.PacketsSent),
		IpAddr:         status.IPAddr.IP.String(),
	}, nil
}

// logger
func Init() {
	initLogger()
}

func initLogger() {
	setupLogger()
	// 在初始化函数中对包级别的变量进行初始化
	logger = logrus.StandardLogger()
	logger.Println("启动NetworkDiagnosticServer, 初始化日志框架...")
}

func setupLogger() {
	// 创建一个新的logrus实例
	log := logrus.New()

	// 设置日志输出为文件，并使用lumberjack库来实现每天生成一个新的日志文件，并保存旧日志文件
	log.SetOutput(&lumberjack.Logger{
		Filename:   "../../logs/networkDiagnosticServer/" + generateLogFileName(), // 日志文件路径，使用日期占位符%Y-%m-%d
		MaxSize:    20,                                                            // 每个日志文件的最大尺寸，单位：MB
		MaxBackups: 3,                                                             // 最多保留的旧日志文件数
		MaxAge:     30,                                                            // 最多保留的旧日志文件天数（这里设置为30天）
		LocalTime:  true,                                                          // 使用本地时间（默认为UTC时间）
		Compress:   true,                                                          // 是否压缩旧日志文件
	})

	// 设置日志格式为JSON格式
	log.SetFormatter(&logrus.JSONFormatter{})

	// 设置日志级别为Debug
	log.SetLevel(logrus.DebugLevel)

	// 将logrus实例设置为全局的默认日志记录器
	logrus.StandardLogger().SetOutput(log.Out)
}

func generateLogFileName() string {
	currentDate := time.Now().Format("01-02-2006")
	return "networkDiagnostic_" + currentDate + ".log"
}

func GetLogger() *logrus.Logger {
	return logger
}