package dsdssandboxes

import (
	"fmt"
)

var (
	// Timezones
	Utc                   = "utc"
	Gmt                   = "gmt_standard_time"
	EasternStandardTime   = "eastern_standard_time"
	AustralianEasternTime = "aus_eastern_standard_time"
	IsraelStandardTime    = "israel_standard_time"
	IndiaStandardTime     = "india_standard_time"

	// Label keys
	vmTimezoneLabel        = "vmtz"
	vmAutoStartStopWeekday = "vmautostartstopweekday"
	vmAutoStartStopWeekend = "vmautostartstopweekend"
)

type Schedule struct {
	WeekendStart *int
	WeekendStop  *int
	WeekdayStart *int
	WeekdayStop  *int
	Timezone     string
}

// Converts to a string[string] map to allow labels
// to be applied to instances using GCP libraries
func (s *Schedule) ToLabelMap() map[string]string {
	ret := make(map[string]string)

	ret[vmTimezoneLabel] = s.Timezone

	ret[vmAutoStartStopWeekday] = timeToScheduleLabel(
		s.WeekdayStart,
		s.WeekdayStop,
	)

	ret[vmAutoStartStopWeekend] = timeToScheduleLabel(
		s.WeekendStart,
		s.WeekendStop,
	)

	return ret
}

func timeToScheduleLabel(start *int, stop *int) string {
	return fmt.Sprintf("%v-%v", timeToString(start), timeToString(stop))
}

func timeToString(value *int) string {
	if value == nil {
		return "false"
	}
	return fmt.Sprintf("%02d", *value)
}