package parser

import (
	"strconv"
	"strings"
)

type CPUParser struct {
}

func (p *CPUParser) Key() string {
	return "cpu"
}

func (p *CPUParser) Parse(scanner *ParserScanner) (map[string]string, error) {
	resMap := make(map[string]string, 0)

	for scanner.Scan() {
		line := scanner.Text()
		parts := strings.Fields(line)

		if !strings.HasPrefix(parts[0], "cpu") {
			continue
		}

		//var steal, guest, guestNice int64
		//if len(parts) > 8 {
		//	steal = util.StringToInt64(parts[8])
		//}
		//if len(parts) > 9 {
		//	guest = util.StringToInt64(parts[9])
		//}
		if 10 >= len(parts) {
			//guestNice = util.StringToInt64(parts[10])
			continue
		}

		//stats = append(stats, CPUStat{
		//Device :=    util.StringToInt64(parts[0])
		// User := util.StringToInt64(parts[1])
		// Nice := util.StringToInt64(parts[2])
		// System := util.StringToInt64(parts[3])
		// Idle := util.StringToInt64(parts[4])
		// Iowait := util.StringToInt64(parts[5])
		// Irq := util.StringToInt64(parts[6])
		// SoftIrq := util.StringToInt64(parts[7])
		// Steal := util.StringToInt64(parts[8])
		// Guest := util.StringToInt64(parts[9])
		// GuestNice := util.StringToInt64(parts[10])
		//})

		// sum := User + Nice + System + Idle + Iowait + Irq + SoftIrq + Steal + Guest + GuestNice
		sum := sumFromStrings(parts, 1, 11, nil)

		resMap["sum"] = strconv.FormatInt(sum, 10)
		resMap["user"] = parts[1]
		resMap["nice"] = parts[2]
		resMap["system"] = parts[3]
		resMap["idle"] = parts[4]
		resMap["iowait"] = parts[5]
		resMap["irq"] = parts[6]
		resMap["softIrq"] = parts[7]
		resMap["steal"] = parts[8]
		resMap["guest"] = parts[9]
		resMap["gnice"] = parts[10]

		break // first line only --- cpu
	}

	//res, err := cpu.parse(keys, stats)
	//if err != nil {
	//	return nil, err
	//}

	return resMap, scanner.Err()

}

func sumFromStrings(ss []string, startIndex, endIndex int, exclude []int) int64 {
	if nil == ss {
		return 0
	}

	var result int64
Loop:
	for i := startIndex; i < endIndex; i++ {
		if nil != exclude {
			for j := 0; j < len(exclude); j++ {
				if exclude[j] == i {
					continue Loop
				}
			}
		}
		i64, _ := strconv.ParseInt(ss[i], 10, 64)
		result += i64
	}

	return result
}