//go:build !windows

package stats

import (
	"os"
	"runtime"
	"sync"
)

type Reporter struct {
	mu sync.Mutex

	lastIdle  uint64
	lastTotal uint64
	hasSample bool
}

func NewReporter() *Reporter {
	return &Reporter{}
}

func (r *Reporter) SystemInfo() (hostname string, cpuCores int, memoryGB int) {
	hostname, _ = os.Hostname()
	cpuCores = runtime.NumCPU()
	total, _ := r.memoryStatus()
	memoryGB = int(total / (1024 * 1024 * 1024))
	if memoryGB < 1 {
		memoryGB = 1
	}
	return hostname, cpuCores, memoryGB
}

func (r *Reporter) Usage() (cpuPct float64, memPct float64) {
	total, avail := r.memoryStatus()
	if total > 0 {
		memPct = float64(total-avail) / float64(total) * 100
	}
	return 0, memPct
}

func (r *Reporter) FreeMemoryMB() uint64 {
	_, avail := r.memoryStatus()
	return avail / (1024 * 1024)
}

func (r *Reporter) TotalMemoryMB() uint64 {
	total, _ := r.memoryStatus()
	return total / (1024 * 1024)
}