package ocss

import (
	"bytes"
	"encoding/json"
)

type Day int64

const (
	Monday Day = iota
	Tuesday
	Wednesday
	Thursday
	Friday
	Saturday
	Sunday
)

var daytoID = map[string]Day{
	"MON": Monday,
	"TUE": Tuesday,
	"WED": Wednesday,
	"THU": Thursday,
	"FRI": Friday,
	"SAT": Saturday,
	"SUN": Sunday,
}

var daytoString = map[Day]string{
	Monday:    "MON",
	Tuesday:   "TUE",
	Wednesday: "WED",
	Thursday:  "THU",
	Friday:    "FRI",
	Saturday:  "SAT",
	Sunday:    "SUN",
}

func (s Day) MarshalJSON() ([]byte, error) {
	buffer := bytes.NewBufferString(`"`)
	buffer.WriteString(daytoString[s])
	buffer.WriteString(`"`)
	return buffer.Bytes(), nil
}

func (bs *Day) UnmarshalJSON(b []byte) error {
	var j string
	err := json.Unmarshal(b, &j)
	if err != nil {
		return err
	}
	// Note that if the string cannot be found then it will be set to the zero value, 'Created' in this case.
	*bs = daytoID[j]
	return nil
}

type Schedule struct {
	PassengerPickupDay *Day `json:"passengerPickupDay,omitempty"`

	JourneySchedules *[]JourneySchedule `json:"journeySchedules,omitempty"`
}