package valid

import (
	"context"
	"reflect"
	"strings"

	"github.com/gogf/gf/errors/gerror"
	"github.com/gogf/gf/util/gconv"
	"github.com/gogf/gf/util/gvalid"
)

func init() {
	if err := gvalid.RegisterRule("int-in", IntInChecker); err != nil {
		panic(err)
	}
}

func IntInChecker(ctx context.Context, rule string, value interface{}, message string, data interface{}) error {
	// rule int-in:1,2
	// fmt.Println(rule, value, value == nil)
	if value == nil {
		return nil
	}
	reflectValue := reflect.ValueOf(value)
	if reflectValue.Kind() == reflect.Ptr {
		if reflectValue.IsNil() {
			return nil
		}
	}

	v := gconv.String(value)
	allow := strings.Split(rule, ":")
	if len(allow) < 2 {
		return nil
	}
	allow = strings.Split(allow[1], ",")
	for _, a := range allow {
		if v == a {
			return nil
		}
	}
	return gerror.New(message)
}