package libpostal

import (
	"fmt"
	"strings"
)

type Address struct {
	HouseNumber string
	Road        string
	City        string
	State       string
	PostCode    string
}

func (a *Address) Invalid() error {
	var missingFields []string
	if len(a.HouseNumber) == 0 {
		missingFields = append(missingFields, "HouseNumber")
	}
	if len(a.Road) == 0 {
		missingFields = append(missingFields, "Road")
	}
	if len(a.City) == 0 {
		missingFields = append(missingFields, "City")
	}
	if len(a.State) == 0 {
		missingFields = append(missingFields, "State")
	}
	if len(a.PostCode) == 0 {
		missingFields = append(missingFields, "PostCode")
	}

	if len(missingFields) > 0 {
		return fmt.Errorf("missing fields: %s", strings.Join(missingFields, ", "))
	}
	return nil
}