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//                           _       _
// __      _____  __ ___   ___  __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
//  \ V  V /  __/ (_| |\ V /| | (_| | ||  __/
//   \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
//  Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
//  CONTACT: [email protected]
//

package validation

import (
	"fmt"
	"strings"

	"github.com/nyaruka/phonenumbers"
	"github.com/weaviate/weaviate/entities/models"
)

func parsePhoneNumber(input, defaultCountry string) (*models.PhoneNumber, error) {
	defaultCountry = strings.ToUpper(defaultCountry)
	num, err := phonenumbers.Parse(input, defaultCountry)
	if err != nil {
		switch err {
		case phonenumbers.ErrInvalidCountryCode:
			return nil, fmt.Errorf("invalid phone number: invalid or missing defaultCountry - this field is optional if the specified number is in the international format, but required if the number is in national format, use ISO 3166-1 alpha-2")
		default:
			return nil, fmt.Errorf("invalid phone number: %v", err)
		}
	}

	return &models.PhoneNumber{
		National:               num.GetNationalNumber(),
		NationalFormatted:      phonenumbers.Format(num, phonenumbers.NATIONAL),
		InternationalFormatted: phonenumbers.Format(num, phonenumbers.INTERNATIONAL),
		CountryCode:            uint64(num.GetCountryCode()),
		DefaultCountry:         defaultCountry,
		Input:                  input,
		Valid:                  phonenumbers.IsValidNumber(num),
	}, nil
}