package stat

import (
	"bufio"
	"io"
	"strings"
)

type ProcessStat struct {
	user,
	pid,
	size,
	pcpu,
	pmem,
	cmd string
}

func (ps *ProcessStat) Command() string {
	return "ps -eo user,pid,size,pcpu,pmem,comm --sort=-pmem c"
}

func (ps *ProcessStat) Parse(r io.Reader) (*[]ProcessStat, error) {
	var (
		psStats = []ProcessStat{}
		scanner = bufio.NewScanner(r)
	)
	scanner.Scan()
	for scanner.Scan() {
		line := scanner.Text()
		parts := strings.Fields(line)
		psStats = append(psStats, ProcessStat{
			user: parts[0],
			pid:  parts[1],
			size: parts[2],
			pcpu: parts[3],
			pmem: parts[4],
			cmd:  parts[5],
		})
	}
	return &psStats, scanner.Err()
}