package xml

import (
	"errors"
	"fmt"
	"strings"
	"time"

	"airlines/pkg/model"
)

func (u XMLUser) ToUser() (*model.User, error) {
	return &model.User{
		Nick:        "",
		Name:        strings.ToUpper(strings.TrimSpace(u.Name.First)),
		Surname:     strings.ToUpper(strings.TrimSpace(u.Name.Last)),
		Fathersname: "",
		Sex:         model.SexUnknown,
		Birthday:    model.SentinelBirthday(),
	}, nil
}

func (c XMLCard) ToCard() (*model.Card, error) {
	prefix, number, _ := model.ParseCardLine(c.Number)
	if prefix == "" && number == 0 && strings.TrimSpace(c.Program) == "" {
		return nil, errors.New("bad card")
	}
	return &model.Card{
		Prefix:        prefix,
		Number:        number,
		Bonusprogramm: strings.TrimSpace(c.Program),
	}, nil
}

func (a XMLActivity) ToFlight() (*model.Flight, error) {
	fromIATA := strings.ToUpper(strings.TrimSpace(a.Departure))
	toIATA := strings.ToUpper(strings.TrimSpace(a.Arrival))

	d, err := time.Parse("2006-01-02", strings.TrimSpace(a.Date))
	if err != nil {
		return nil, fmt.Errorf("invalid Date %q for flight %q: %w", a.Date, a.Code, err)
	}
	departUTC := time.Date(d.Year(), d.Month(), d.Day(), 0, 0, 0, 0, time.UTC)

	return &model.Flight{
		Number: strings.TrimSpace(a.Code),
		From:   fromIATA,
		To:     toIATA,
		Date:   departUTC,
	}, nil
}