//+build !windows

package cpu

import (
	"fmt"
	"runtime"

	cpuUtil "github.com/shirou/gopsutil/v3/cpu"
	"github.com/shirou/gopsutil/v3/load"

	"go.fanir.de/statusline/config"
)

func Load(format config.Format, precision int) (string, error) {
	l, err := load.Avg()
	if err != nil {
		return "", err // FIXME
	}

	cpus, err := cpuUtil.Counts(true)
	if err != nil {
		// TODO: log error
		cpus = runtime.NumCPU()
	}

	if l.Load1 > float64(cpus) {
		return fmt.Sprintf(format.Warning), nil
	}

	return fmt.Sprintf("[%.[1]*[2]f %.[1]*[3]f %.[1]*[4]f]",
		precision, l.Load1, l.Load5, l.Load15), nil
}