package view

import (
	"context"
	"fmt"
	"time"

	"edge-infra.dev/pkg/edge/edgeadmin/registrar"
	"edge-infra.dev/pkg/edge/edgecli"
	"edge-infra.dev/pkg/edge/edgecli/constructors"
	"edge-infra.dev/pkg/edge/edgecli/flagutil"
	"edge-infra.dev/pkg/lib/cli/command"
	"edge-infra.dev/pkg/lib/cli/rags"
)

// NewCmd command to update cluster secret
func NewCmd(cfg *edgecli.Config) *command.Command {
	flagsets := append(flagutil.GetCommonFlags(), flagutil.GetConnectionFlags(cfg)...)
	var cmd *command.Command

	cmd = &command.Command{
		ShortUsage: "edge clustersecret view",
		ShortHelp:  "View the clusters credentials",
		Flags: append(flagsets,
			&rags.Rag{
				Name:     flagutil.StoreFlag,
				Value:    &rags.String{},
				Usage:    "Store name",
				Required: true,
			},
			&rags.Rag{
				Name:     flagutil.BannerFlag,
				Value:    &rags.String{},
				Usage:    "Banner name",
				Required: true,
			},
			&rags.Rag{
				Name:     flagutil.SecretTypeFlag,
				Value:    &rags.String{},
				Usage:    "Secret type",
				Required: true,
			},
			&rags.Rag{
				Name:     flagutil.Version,
				Value:    &rags.String{},
				Usage:    "Secret version",
				Required: false,
			},
		),
		Exec: func(_ context.Context, _ []string) error {
			//validates required field value, value cannot be empty or space
			if err := flagutil.ValidateRequiredFlags(cmd.Rags); err != nil {
				return err
			}

			registrar, err := constructors.BuildRegistrar(cmd.Rags)
			if err != nil {
				return err
			}

			cluster, err := getCluster(cmd, registrar)
			if err != nil {
				fmt.Println("an error occurred whilst getting the cluster secret")
				return err
			}

			clusterSecret, err := getClusterSecret(cmd, registrar, cluster.ClusterEdgeID)
			if err != nil {
				fmt.Println("an error occurred whilst getting the cluster secret")
				return err
			}

			if len(clusterSecret) == 0 {
				fmt.Println("cluster secret does not exist")
			} else {
				fmt.Printf("cluster secret: %s \n", clusterSecret)
			}

			return nil
		},
	}
	return cmd
}

func getCluster(cmd *command.Command, registrar *registrar.Registrar) (*registrar.Cluster, error) {
	storeName := flagutil.GetStringFlag(cmd.Rags, flagutil.StoreFlag)
	bannerName := flagutil.GetStringFlag(cmd.Rags, flagutil.BannerFlag)

	reqCtx, cancelReq := context.WithTimeout(context.Background(), time.Duration(30)*time.Second)
	defer cancelReq()

	cluster, err := registrar.GetCluster(reqCtx, storeName, bannerName)
	if err != nil {
		return nil, err
	}

	return &cluster, nil
}

func getClusterSecret(cmd *command.Command, registrar *registrar.Registrar, clusterEdgeID string) (string, error) {
	secretType := flagutil.GetStringFlag(cmd.Rags, flagutil.SecretTypeFlag)
	secretVersion := flagutil.GetStringFlag(cmd.Rags, flagutil.Version)

	reqCtx, cancelReq := context.WithTimeout(context.Background(), time.Duration(30)*time.Second)
	defer cancelReq()

	return registrar.GetClusterSecret(reqCtx, clusterEdgeID, secretType, secretVersion)
}