//go:build !production

package synk

import (
	"os"
	"os/signal"
	"sync/atomic"
	"time"

	"github.com/rs/zerolog/log"
	"github.com/yusing/godoxy/internal/utils/strutils"
)

type poolCounters struct {
	num  atomic.Uint64
	size atomic.Uint64
}

var (
	nonPooled poolCounters
	dropped   poolCounters
	reused    poolCounters
)

func addNonPooled(size int) {
	nonPooled.num.Add(1)
	nonPooled.size.Add(uint64(size))
}

func addReused(size int) {
	reused.num.Add(1)
	reused.size.Add(uint64(size))
}
func addDropped(size int) {
	dropped.num.Add(1)
	dropped.size.Add(uint64(size))
}

func initPoolStats() {
	go func() {
		statsTicker := time.NewTicker(5 * time.Second)
		defer statsTicker.Stop()

		sig := make(chan os.Signal, 1)
		signal.Notify(sig, os.Interrupt)

		for {
			select {
			case <-sig:
				return
			case <-statsTicker.C:
				log.Info().
					Uint64("numReused", reused.num.Load()).
					Str("sizeReused", strutils.FormatByteSize(reused.size.Load())).
					Uint64("numDropped", dropped.num.Load()).
					Str("sizeDropped", strutils.FormatByteSize(dropped.size.Load())).
					Uint64("numNonPooled", nonPooled.num.Load()).
					Str("sizeNonPooled", strutils.FormatByteSize(nonPooled.size.Load())).
					Msg("bytes pool stats")
			}
		}
	}()
}