package domain

import (
	"fmt"

	"calllinesystem/server/internal/model"
)

func DisplayNumber(_ string, number int) (string, error) {
	if number <= 0 || number > 99999 {
		return "", fmt.Errorf("invalid ticket number")
	}
	return fmt.Sprintf("%05d", number), nil
}

func CanTransitionTicket(from, to string) bool {
	switch to {
	case model.TicketArrived:
		return from == model.TicketCalled || from == model.TicketArrived
	case model.TicketCompleted:
		return from == model.TicketCalled || from == model.TicketArrived || from == model.TicketCompleted
	case model.TicketMissed:
		return from == model.TicketCalled || from == model.TicketMissed
	case model.TicketCanceled:
		return from == model.TicketWaiting || from == model.TicketCanceled
	default:
		return false
	}
}