EdgeCommon/pkg/nodeconfigs/timezones.go

// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.

package nodeconfigs

import "time"

type TimeZoneGroupCode = string

const (
	TimeZoneGroupCodeAfrica       TimeZoneGroupCode = "africa"
	TimeZoneGroupCodeEurope       TimeZoneGroupCode = "europe"
	TimeZoneGroupCodeNorthAmerica TimeZoneGroupCode = "northamerica"
	TimeZoneGroupCodeSouthAmerica TimeZoneGroupCode = "southamerica"
	TimeZoneGroupCodeAntarctica   TimeZoneGroupCode = "antarctica"
	TimeZoneGroupCodeAustralasia  TimeZoneGroupCode = "australasia"
	TimeZoneGroupCodeAsia         TimeZoneGroupCode = "asia"
)

type TimeZoneGroup struct {
	Name string            `json:"name"`
	Code TimeZoneGroupCode `json:"code"`
}

func FindAllTimeZoneGroups() []*TimeZoneGroup {
	return []*TimeZoneGroup{
		{
			Name: "亚洲",
			Code: TimeZoneGroupCodeAsia,
		},
		{
			Name: "北美",
			Code: TimeZoneGroupCodeNorthAmerica,
		},
		{
			Name: "南美",
			Code: TimeZoneGroupCodeSouthAmerica,
		},
		{
			Name: "欧洲",
			Code: TimeZoneGroupCodeEurope,
		},
		{
			Name: "大洋洲",
			Code: TimeZoneGroupCodeAustralasia,
		},
		{
			Name: "非洲",
			Code: TimeZoneGroupCodeAfrica,
		},
		{
			Name: "南极洲",
			Code: TimeZoneGroupCodeAntarctica,
		},
	}
}

const DefaultTimeZoneLocation = "Asia/Shanghai"

type TimeZoneLocation struct {
	Name        string            `json:"name"`
	Offset      string            `json:"offset"`
	Group       TimeZoneGroupCode `json:"group"`
	IsCanonical bool              `json:"isCanonical"`
}

var timeZones = []*TimeZoneLocation{}

func FindAllTimeZoneLocations() []*TimeZoneLocation {
	if len(timeZones) == 0 {
		var allTimeZones = []*TimeZoneLocation{{Name: "Africa/Ceuta", Offset: "+02:00", Group: "europe", IsCanonical: true}, {Name: "Africa/Kinshasa", Offset: "+01:00", Group: "africa", IsCanonical: false}, {Name: "Africa/Lagos", Offset: "+01:00", Group: "africa", IsCanonical: true}, {Name: "Africa/Lubumbashi", Offset: "+02:00", Group: "africa", IsCanonical: false}, {Name: "Africa/Maputo", Offset: "+02:00", Group: "africa", IsCanonical: true}, {Name: "America/Adak", Offset: "−09:00", Group: "northamerica", IsCanonical: true}, {Name: "America/Anchorage", Offset: "−08:00", Group: "northamerica", IsCanonical: true}, {Name: "America/Araguaina", Offset: "−03:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Argentina/Buenos_Aires", Offset: "−03:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Argentina/Catamarca", Offset: "−03:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Argentina/Cordoba", Offset: "−03:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Argentina/Jujuy", Offset: "−03:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Argentina/La_Rioja", Offset: "−03:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Argentina/Mendoza", Offset: "−03:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Argentina/Rio_Gallegos", Offset: "−03:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Argentina/Salta", Offset: "−03:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Argentina/San_Juan", Offset: "−03:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Argentina/San_Luis", Offset: "−03:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Argentina/Tucuman", Offset: "−03:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Argentina/Ushuaia", Offset: "−03:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Atikokan", Offset: "−05:00", Group: "northamerica", IsCanonical: false}, {Name: "America/Bahia", Offset: "−03:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Bahia_Banderas", Offset: "−05:00", Group: "northamerica", IsCanonical: true}, {Name: "America/Belem", Offset: "−03:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Blanc-Sablon", Offset: "−04:00", Group: "northamerica", IsCanonical: false}, {Name: "America/Boa_Vista", Offset: "−04:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Boise", Offset: "−06:00", Group: "northamerica", IsCanonical: true}, {Name: "America/Cambridge_Bay", Offset: "−06:00", Group: "northamerica", IsCanonical: true}, {Name: "America/Campo_Grande", Offset: "−04:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Cancun", Offset: "−05:00", Group: "northamerica", IsCanonical: true}, {Name: "America/Chicago", Offset: "−05:00", Group: "northamerica", IsCanonical: true}, {Name: "America/Chihuahua", Offset: "−06:00", Group: "northamerica", IsCanonical: true}, {Name: "America/Creston", Offset: "−07:00", Group: "northamerica", IsCanonical: false}, {Name: "America/Cuiaba", Offset: "−04:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Danmarkshavn", Offset: "+00:00", Group: "europe", IsCanonical: true}, {Name: "America/Dawson", Offset: "−07:00", Group: "northamerica", IsCanonical: true}, {Name: "America/Dawson_Creek", Offset: "−07:00", Group: "northamerica", IsCanonical: true}, {Name: "America/Denver", Offset: "−06:00", Group: "northamerica", IsCanonical: true}, {Name: "America/Detroit", Offset: "−04:00", Group: "northamerica", IsCanonical: true}, {Name: "America/Edmonton", Offset: "−06:00", Group: "northamerica", IsCanonical: true}, {Name: "America/Eirunepe", Offset: "−05:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Fort_Nelson", Offset: "−07:00", Group: "northamerica", IsCanonical: true}, {Name: "America/Fortaleza", Offset: "−03:00", Group: "southamerica", IsCanonical: true}, {Name: "America/Glace_Bay", Offset: "−03:00", Group: "northamerica", IsCanonical: true}, {Name: "America/G

		// 检查是否存在
		var validTimeZones = []*TimeZoneLocation{}
		for _, location := range allTimeZones {
			_, err := time.LoadLocation(location.Name)
			if err == nil {
				validTimeZones = append(validTimeZones, location)
			}
		}
		timeZones = validTimeZones
	}
	return timeZones
}

func FindTimeZoneLocation(name string) *TimeZoneLocation {
	for _, location := range FindAllTimeZoneLocations() {
		if location.Name == name {
			return location
		}
	}
	return nil
}