package blobovniczatree

import (
	"context"
	"time"

	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
)

func (b *Blobovniczas) ObjectsCount(ctx context.Context) (uint64, error) {
	var (
		success   bool
		startedAt = time.Now()
	)
	defer func() {
		b.metrics.ObjectsCount(time.Since(startedAt), success)
	}()

	ctx, span := tracing.StartSpanFromContext(ctx, "Blobovniczas.ObjectsCount")
	defer span.End()

	var result uint64
	err := b.iterateExistingDBPaths(ctx, func(p string) (bool, error) {
		shDB := b.getBlobovniczaWithoutCaching(p)
		blz, err := shDB.Open(ctx)
		if err != nil {
			return true, err
		}
		defer shDB.Close()

		result += blz.ObjectsCount()
		return false, nil
	})
	if err != nil {
		return 0, err
	}
	return result, nil
}