package main

import (
	"fmt"
	"os"
	"strconv"
)

func GetDirectoryDiskUsed(directories []string) (uint64, error) {
	//cmd := exec.Command("du", "-s")
	//cmd.Args = append(cmd.Args, directories...)
	//output, err := cmd.CombinedOutput()
	//if err != nil {
	//	fmt.Println(err)
	//	return 0, err
	//}
	//lines := strings.Split(string(output), "\n")
	//fmt.Println(lines)
	//sum := uint64(0)
	//for _, line := range lines {
	//	fields := strings.Fields(line)
	//	parseUint, err := strconv.ParseUint(fields[0], 10, 64)
	//	fmt.Println("parseUint", parseUint)
	//	if err != nil {
	//		fmt.Println(err)
	//		return 0, err
	//	}
	//	sum += parseUint
	//}
	sum := uint64(0)
	for _, directory := range directories {
		fileInfo, err := os.Stat(directory)
		if err != nil {
			fmt.Println(err)
			return 0, err
		}
		fmt.Println("fileInfo.Size()", fileInfo.Size())
		parseUint, err := strconv.ParseUint(strconv.FormatInt(fileInfo.Size(), 10), 10, 64)
		fmt.Println("parseUint", parseUint)
		if err != nil {
			fmt.Println(err)
			return 0, err
		}
		sum += parseUint
	}

	return sum, nil
}

func main() {
	diskUsed, err := GetDirectoryDiskUsed([]string{"/root/cicv-data-closedloop", "/root/pjirobot/data/cicv-data-closedloop"})
	if err != nil {
		return
	}
	fmt.Println("diskUsed", diskUsed)
}