package cmd

import (
	"fmt"
	"strings"

	"archgrid.xyz/ag/tools/types"
	"archgrid.xyz/ag/toolsbox/hash/crc64"
	"github.com/spf13/cobra"
)

var (
	crc64Algorithm types.CRC64Algorithm = types.CRC64_ISO
	crc64File      bool
)

var crc64Cmd = &cobra.Command{
	Use:   "crc64",
	Short: `CRC64校验`,
	Long:  `对给定的内容进行CRC64校验计算。`,
	Args:  cobra.MinimumNArgs(1),
	Run:   crc64Execute,
}

func crc64Execute(cmd *cobra.Command, args []string) {
	var (
		result []byte
		err    error
	)
	if crc64File {
		result, err = crc64.SumFile(args[0], crc64Algorithm.IntoCRC64Mode())
	} else {
		result = crc64.CRC64([]byte(args[0]), crc64Algorithm.IntoCRC64Mode())
	}
	if err != nil {
		fmt.Printf("计算CRC64校验值时发生错误：%s\n", err)
		return
	}
	var builder strings.Builder
	for _, b := range result {
		builder.WriteString(fmt.Sprintf(" %02X", b))
	}
	fmt.Printf("CRC64校验值：%s\n", builder.String())
}

func init() {
	crc64Cmd.PersistentFlags().VarP(&crc64Algorithm, "algorithm", "a", "CRC64算法，可选值有：iso, ecma，缺省值为iso。")
	crc64Cmd.PersistentFlags().BoolVarP(&crc64File, "file", "f", false, "从文件中读取内容")
	rootCmd.AddCommand(crc64Cmd)
}