package helper

import (
	"github.com/gshopify/service-wrapper/model"
	"gshopper.com/gshopify/products/graphql/generated"
	"strconv"
)

func ExtractMetaPosition(namespace model.Gid, metas []*generated.Metafield) int64 {
	for _, meta := range metas {
		if meta == nil {
			continue
		}

		if model.Gid(meta.Namespace) != namespace {
			continue
		}

		t := model.MetaFieldType(meta.Type)
		if !t.IsValid() || model.MetaFieldTypeNumberInteger != t {
			continue
		}

		if meta.Key != "position" {
			continue
		}

		i, err := strconv.ParseInt(meta.Value, 10, 64)
		if err != nil {
			i = -1
		}

		return i
	}

	return -1
}