package cmd

import (
	"fmt"
	"git.hpds.cc/Component/network/log"
	"github.com/spf13/cobra"
	"hpds_mq/config"
	"os"
	"os/signal"
	"syscall"

	"git.hpds.cc/pavement/hpds_node"
	discover "hpds_mq/internal/discover/consul"
)

var (
	consulConfigs  chan *discover.ConsulConfig
	ConfigFileFlag string = "./config/config.yml"
	ConsulAddress  string = "http://localhost:8500"
	NodeName       string = "main-node"
	Mode           string = "dev"
)

func must(err error) {
	if err != nil {
		fmt.Fprint(os.Stderr, err)
		os.Exit(1)
	}
}

func NewStartCmd() *cobra.Command {
	cmd := &cobra.Command{
		Use:   "start",
		Short: "Start hpds_mq broker",
		Run: func(cmd *cobra.Command, args []string) {
			var (
				cfg *config.MessageQueueConfig
				err error
			)
			must(err)
			configFileFlag, err := cmd.Flags().GetString("c")
			if err != nil {
				fmt.Println("get local config err: ", err)
				return
			}
			ConsulAddress, err = cmd.Flags().GetString("r")
			if err != nil {
				fmt.Println("get remote config err: ", err)
				return
			}
			NodeName, err = cmd.Flags().GetString("n")
			if err != nil {
				fmt.Println("get remote path config err: ", err)
				return
			}
			Mode, err = cmd.Flags().GetString("m")
			if err != nil {
				fmt.Println("get remote path config err: ", err)
				return
			}
			if len(configFileFlag) > 1 {
				cfg, err = config.ParseConfigByFile(configFileFlag)
				must(err)
				err = config.UpdateRemoteConfig(cfg)
				must(err)
				ConfigFileFlag = configFileFlag
			} else {
				//获取consul注册中心的配置文件
				cfg, err = config.GetRemoteConfig(ConsulAddress, fmt.Sprintf("hpds-pavement/hpds_mq/%s/%s", Mode, NodeName))
				must(err)
				err = config.UpdateLocalConfig(cfg, ConfigFileFlag)
			}

			// 退出channel
			exitChannel := make(chan os.Signal)
			defer close(exitChannel)

			// 退出信号监听
			go func(c chan os.Signal) {
				signal.Notify(c, syscall.SIGINT, syscall.SIGTERM)
			}(exitChannel)
			mq, err := hpds_node.NewMq(configFileFlag)
			must(err)
			mq.InitOptions(hpds_node.WithAuth("token", cfg.Token))
			defer mq.Close()

			if len(cfg.CascadeNode) > 0 {
				for i := 0; i < len(cfg.CascadeNode); i++ {
					mq.AddDownstreamMq(hpds_node.NewDownstreamMq(
						cfg.CascadeNode[i].Name,
						hpds_node.WithMqAddr(fmt.Sprintf("%s:%d", cfg.CascadeNode[i].Host, cfg.CascadeNode[i].Port)),
						hpds_node.WithCredential(fmt.Sprintf("token:%s", cfg.CascadeNode[i].Token)),
					))
				}
			}
			// start mq service
			log.Printf("Server has started!, pid: %d", os.Getpid())
			go func() {
				err = mq.ListenAndServe()
				if err != nil {
					panic(err)
				}
			}()
			select {}
		},
	}
	cmd.Flags().StringVar(&ConfigFileFlag, "c", "./config/config.yaml", "The configuration file path")
	cmd.Flags().StringVar(&ConsulAddress, "r", "http://consul.hpds.cc", "The configuration remote consul address")
	cmd.Flags().StringVar(&NodeName, "n", "main-node", "The configuration name")
	cmd.Flags().StringVar(&Mode, "m", "dev", "run mode : dev | test | releases")
	return cmd
}

/*
func Run() {
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	// 退出channel
	exitChannel := make(chan os.Signal)
	defer close(exitChannel)

	// 退出信号监听
	go func(c chan os.Signal) {
		signal.Notify(c, syscall.SIGINT, syscall.SIGTERM)
	}(exitChannel)

}
*/