package sk

import (
	"math"
	"strconv"
	"time"

	"github.com/go-playground/locales"
	"github.com/go-playground/locales/currency"
)

type sk struct {
	locale                 string
	pluralsCardinal        []locales.PluralRule
	pluralsOrdinal         []locales.PluralRule
	pluralsRange           []locales.PluralRule
	decimal                string
	group                  string
	minus                  string
	percent                string
	percentSuffix          string
	perMille               string
	timeSeparator          string
	inifinity              string
	currencies             []string // idx = enum of currency code
	currencyPositiveSuffix string
	currencyNegativePrefix string
	currencyNegativeSuffix string
	monthsAbbreviated      []string
	monthsNarrow           []string
	monthsWide             []string
	daysAbbreviated        []string
	daysNarrow             []string
	daysShort              []string
	daysWide               []string
	periodsAbbreviated     []string
	periodsNarrow          []string
	periodsShort           []string
	periodsWide            []string
	erasAbbreviated        []string
	erasNarrow             []string
	erasWide               []string
	timezones              map[string]string
}

// New returns a new instance of translator for the 'sk' locale
func New() locales.Translator {
	return &sk{
		locale:                 "sk",
		pluralsCardinal:        []locales.PluralRule{2, 4, 5, 6},
		pluralsOrdinal:         []locales.PluralRule{6},
		pluralsRange:           []locales.PluralRule{2, 4, 5, 6},
		decimal:                ",",
		group:                  " ",
		minus:                  "-",
		percent:                "%",
		perMille:               "‰",
		timeSeparator:          ":",
		inifinity:              "∞",
		currencies:             []string{"ADP ", "AED", "AFA ", "AFN", "ALK ", "ALL", "AMD", "ANG", "AOA", "AOK ", "AON ", "AOR ", "ARA ", "ARL ", "ARM ", "ARP ", "ARS", "ATS ", "AUD", "AWG", "AZM", "AZN", "BAD ", "BAM", "BAN ", "BBD", "BDT", "BEC ", "BEF ", "BEL ", "BGL ", "BGM ", "BGN", "BGO ", "BHD", "BIF", "BMD", "BND", "BOB", "BOL ", "BOP ", "BOV ", "BRB ", "BRC ", "BRE ", "BRL", "BRN ", "BRR ", "BRZ ", "BSD", "BTN", "BUK ", "BWP", "BYB ", "BYR", "BZD", "CAD", "CDF", "CHE ", "CHF", "CHW ", "CLE ", "CLF ", "CLP", "CNX ", "CNY", "COP", "COU ", "CRC", "CSD ", "CSK ", "CUC", "CUP", "CVE", "CYP ", "CZK", "DDM ", "DEM ", "DJF", "DKK", "DOP", "DZD", "ECS ", "ECV ", "EEK", "EGP", "ERN", "ESA ", "ESB ", "ESP ", "ETB", "€", "FIM ", "FJD", "FKP", "FRF ", "GBP", "GEK ", "GEL", "GHC ", "GHS", "GIP", "GMD", "GNF", "GNS ", "GQE ", "GRD ", "GTQ", "GWE ", "GWP", "GYD", "HKD", "HNL", "HRD ", "HRK", "HTG", "HUF", "IDR", "IEP ", "ILP ", "ILR ", "NIS", "INR", "IQD", "IRR", "ISJ ", "ISK", "ITL ", "JMD", "JOD", "JPY", "KES", "KGS", "KHR", "KMF", "KPW", "KRH ", "KRO ", "KRW", "KWD", "KYD", "KZT", "LAK", "LBP", "LKR", "LRD", "LSL ", "LTL", "LTT ", "LUC ", "LUF ", "LUL ", "LVL", "LVR ", "LYD", "MAD", "MAF ", "MCF ", "MDC ", "MDL", "MGA", "MGF ", "MKD", "MKN ", "MLF ", "MMK", "MNT", "MOP", "MRO", "MTL ", "MTP ", "MUR", "MVP ", "MVR", "MWK", "MX$", "MXP ", "MXV ", "MYR", "MZE", "MZM ", "MZN", "NAD", "NGN", "NIC ", "NIO", "NLG ", "NOK", "NPR", "NZD", "OMR", "PAB", "PEI ", "PEN", "PES ", "PGK", "PHP", "PKR", "PLN", "PLZ ", "PTE ", "PYG", "QAR", "RHD ", "ROL ", "RON", "RSD", "RUB", "RUR ", "RWF", "SAR", "SBD", "SCR", "SDD ", "SDG", "SDP ", "SEK", "SGD", "SHP", "SIT ", "SKK ", "SLL", "SOS", "SRD", "SRG ", "SSP", "STD", "SUR ", "SVC", "SYP", "SZL", "THB", "TJR ", "TJS", "TMM ", "TMT", "TND", "TOP", "TPE ", "TRL ", "TRY", "TTD", "TWD", "TZS", "UAH", "UAK ", "UGS ", "UGX", "USD", "USN ", "USS ", "UYI ", "UYP ", "UYU", "UZS", "VEB ", "VEF", "VND", "VNN ", "VUV", "WST", "FCFA", "XAG ", "XAU ", "XBA ", "XBB ", "XBC ", "XBD ", "EC$", "XDR ", "XEU ", "XFO ", "XFU ", "CFA", "XPD ", "CFPF", "XPT ", "XRE ", "XSU ", "XTS ", "XUA ", "XXX ", "YDD ", "YER", "YUD ", "YUM ", "YUN ", "YUR ", "ZAL ", "ZAR", "ZMK ", "ZMW", "ZRN ", "ZRZ ", "ZWD ", "ZWL", "ZWR "},
		percentSuffix:          " ",
		currencyPositiveSuffix: " ",
		currencyNegativePrefix: "(",
		currencyNegativeSuffix: " )",
		monthsAbbreviated:      []string{"", "jan", "feb", "mar", "apr", "máj", "jún", "júl", "aug", "sep", "okt", "nov", "dec"},
		monthsNarrow:           []string{"", "j", "f", "m", "a", "m", "j", "j", "a", "s", "o", "n", "d"},
		monthsWide:             []string{"", "januára", "februára", "marca", "apríla", "mája", "júna", "júla", "augusta", "septembra", "októbra", "novembra", "decembra"},
		daysAbbreviated:        []string{"ne", "po", "ut", "st", "št", "pi", "so"},
		daysNarrow:             []string{"n", "p", "u", "s", "š", "p", "s"},
		daysShort:              []string{"ne", "po", "ut", "st", "št", "pi", "so"},
		daysWide:               []string{"nedeľa", "pondelok", "utorok", "streda", "štvrtok", "piatok", "sobota"},
		periodsAbbreviated:     []string{"AM", "PM"},
		periodsNarrow:          []string{"AM", "PM"},
		periodsWide:            []string{"AM", "PM"},
		erasAbbreviated:        []string{"pred Kr.", "po Kr."},
		erasNarrow:             []string{"", ""},
		erasWide:               []string{"pred Kristom", "po Kristovi"},
		timezones:              map[string]string{"AEST": "východoaustrálsky štandardný čas", "CHADT": "chathamský letný čas", "EDT": "severoamerický východný letný čas", "UYT": "uruguajský štandardný čas", "EST": "severoamerický východný štandardný čas", "ECT": "ekvádorský čas", "PST": "severoamerický tichomorský štandardný čas", "ChST": "chamorrský štandardný čas", "HNT": "newfoundlandský štandardný čas", "WIB": "západoindonézsky čas", "MYT": "malajzijský čas", "CST": "severoamerický centrálny štandardný čas", "OEZ": "východoeurópsky štandardný čas", "HAT": "newfoundlandský letný čas", "ARST": "argentínsky letný čas", "JDT": "japonský letný čas", "HAST": "havajsko-aleutský štandardný čas", "WAST": "západoafrický letný čas", "WART": "západoargentínsky štandardný čas", "IST": "indický čas", "WIT": "východoindonézsky čas", "MST": "severoamerický horský štandardný čas", "∅∅∅": "brazílsky letný čas", "EAT": "východoafrický čas", "LHST": "štandardný čas ostrova lorda Howa", "JST": "japonský štandardný čas", "AST": "atlantický štandardný čas", "HKT": "hongkonský štandardný čas", "CDT": "severoamerický centrálny letný čas", "WEZ": "západoeurópsky štandardný čas", "CLT": "čilský štandardný čas", "WITA": "stredoindonézsky čas", "AKST": "aljašský štandardný čas", "NZST": "novozélandský štandardný čas", "MDT": "severoamerický horský letný čas", "COST": "kolumbijský letný čas", "GMT": "greenwichský čas", "ACDT": "stredoaustrálsky letný čas", "TMST": "turkménsky letný čas", "AWDT": "západoaustrálsky letný čas", "WARST": "západoargentínsky letný čas", "CHAST": "chathamský štandardný čas", "VET": "venezuelský čas", "HADT": "havajsko-aleutský letný čas", "GYT": "guyanský čas", "ACWST": "stredozápadný austrálsky štandardný čas", "ACWDT": "stredozápadný austrálsky letný čas", "CLST": "čilský letný čas", "CAT": "stredoafrický čas", "LHDT": "letný čas ostrova lorda Howa", "BOT": "bolívijský čas", "WESZ": "západoeurópsky letný čas", "ART": "argentínsky štandardný čas", "AKDT": "aljašský letný čas", "PDT": "severoamerický tichomorský letný čas", "AWST": "západoaustrálsky štandardný čas", "SRT": "surinamský čas", "AEDT": "východoaustrálsky letný čas", "ADT": "atlantický letný čas", "WAT": "západoafrický štandardný čas", "BT": "bhutánsky čas", "HKST": "hongkonský letný čas", "TMT": "turkménsky štandardný čas", "MEZ": "stredoeurópsky štandardný čas", "UYST": "uruguajský letný čas", "SGT": "singapurský štandardný čas", "SAST": "juhoafrický čas", "OESZ": "východoeurópsky letný čas", "ACST": "stredoaustrálsky štandardný čas", "MESZ": "stredoeurópsky letný čas", "NZDT": "novozélandský letný čas", "COT": "kolumbijský štandardný čas", "GFT": "francúzskoguyanský čas"},
	}
}

// Locale returns the current translators string locale
func (sk *sk) Locale() string {
	return sk.locale
}

// PluralsCardinal returns the list of cardinal plural rules associated with 'sk'
func (sk *sk) PluralsCardinal() []locales.PluralRule {
	return sk.pluralsCardinal
}

// PluralsOrdinal returns the list of ordinal plural rules associated with 'sk'
func (sk *sk) PluralsOrdinal() []locales.PluralRule {
	return sk.pluralsOrdinal
}

// PluralsRange returns the list of range plural rules associated with 'sk'
func (sk *sk) PluralsRange() []locales.PluralRule {
	return sk.pluralsRange
}

// CardinalPluralRule returns the cardinal PluralRule given 'num' and digits/precision of 'v' for 'sk'
func (sk *sk) CardinalPluralRule(num float64, v uint64) locales.PluralRule {

	n := math.Abs(num)
	i := int64(n)

	if i == 1 && v == 0 {
		return locales.PluralRuleOne
	} else if i >= 2 && i <= 4 && v == 0 {
		return locales.PluralRuleFew
	} else if v != 0 {
		return locales.PluralRuleMany
	}

	return locales.PluralRuleOther
}

// OrdinalPluralRule returns the ordinal PluralRule given 'num' and digits/precision of 'v' for 'sk'
func (sk *sk) OrdinalPluralRule(num float64, v uint64) locales.PluralRule {
	return locales.PluralRuleOther
}

// RangePluralRule returns the ordinal PluralRule given 'num1', 'num2' and digits/precision of 'v1' and 'v2' for 'sk'
func (sk *sk) RangePluralRule(num1 float64, v1 uint64, num2 float64, v2 uint64) locales.PluralRule {

	start := sk.CardinalPluralRule(num1, v1)
	end := sk.CardinalPluralRule(num2, v2)

	if start == locales.PluralRuleOne && end == locales.PluralRuleFew {
		return locales.PluralRuleFew
	} else if start == locales.PluralRuleOne && end == locales.PluralRuleMany {
		return locales.PluralRuleMany
	} else if start == locales.PluralRuleOne && end == locales.PluralRuleOther {
		return locales.PluralRuleOther
	} else if start == locales.PluralRuleFew && end == locales.PluralRuleFew {
		return locales.PluralRuleFew
	} else if start == locales.PluralRuleFew && end == locales.PluralRuleMany {
		return locales.PluralRuleMany
	} else if start == locales.PluralRuleFew && end == locales.PluralRuleOther {
		return locales.PluralRuleOther
	} else if start == locales.PluralRuleMany && end == locales.PluralRuleOne {
		return locales.PluralRuleOne
	} else if start == locales.PluralRuleMany && end == locales.PluralRuleFew {
		return locales.PluralRuleFew
	} else if start == locales.PluralRuleMany && end == locales.PluralRuleMany {
		return locales.PluralRuleMany
	} else if start == locales.PluralRuleMany && end == locales.PluralRuleOther {
		return locales.PluralRuleOther
	} else if start == locales.PluralRuleOther && end == locales.PluralRuleOne {
		return locales.PluralRuleOne
	} else if start == locales.PluralRuleOther && end == locales.PluralRuleFew {
		return locales.PluralRuleFew
	} else if start == locales.PluralRuleOther && end == locales.PluralRuleMany {
		return locales.PluralRuleMany
	}

	return locales.PluralRuleOther

}

// MonthAbbreviated returns the locales abbreviated month given the 'month' provided
func (sk *sk) MonthAbbreviated(month time.Month) string {
	return sk.monthsAbbreviated[month]
}

// MonthsAbbreviated returns the locales abbreviated months
func (sk *sk) MonthsAbbreviated() []string {
	return sk.monthsAbbreviated[1:]
}

// MonthNarrow returns the locales narrow month given the 'month' provided
func (sk *sk) MonthNarrow(month time.Month) string {
	return sk.monthsNarrow[month]
}

// MonthsNarrow returns the locales narrow months
func (sk *sk) MonthsNarrow() []string {
	return sk.monthsNarrow[1:]
}

// MonthWide returns the locales wide month given the 'month' provided
func (sk *sk) MonthWide(month time.Month) string {
	return sk.monthsWide[month]
}

// MonthsWide returns the locales wide months
func (sk *sk) MonthsWide() []string {
	return sk.monthsWide[1:]
}

// WeekdayAbbreviated returns the locales abbreviated weekday given the 'weekday' provided
func (sk *sk) WeekdayAbbreviated(weekday time.Weekday) string {
	return sk.daysAbbreviated[weekday]
}

// WeekdaysAbbreviated returns the locales abbreviated weekdays
func (sk *sk) WeekdaysAbbreviated() []string {
	return sk.daysAbbreviated
}

// WeekdayNarrow returns the locales narrow weekday given the 'weekday' provided
func (sk *sk) WeekdayNarrow(weekday time.Weekday) string {
	return sk.daysNarrow[weekday]
}

// WeekdaysNarrow returns the locales narrow weekdays
func (sk *sk) WeekdaysNarrow() []string {
	return sk.daysNarrow
}

// WeekdayShort returns the locales short weekday given the 'weekday' provided
func (sk *sk) WeekdayShort(weekday time.Weekday) string {
	return sk.daysShort[weekday]
}

// WeekdaysShort returns the locales short weekdays
func (sk *sk) WeekdaysShort() []string {
	return sk.daysShort
}

// WeekdayWide returns the locales wide weekday given the 'weekday' provided
func (sk *sk) WeekdayWide(weekday time.Weekday) string {
	return sk.daysWide[weekday]
}

// WeekdaysWide returns the locales wide weekdays
func (sk *sk) WeekdaysWide() []string {
	return sk.daysWide
}

// FmtNumber returns 'num' with digits/precision of 'v' for 'sk' and handles both Whole and Real numbers based on 'v'
func (sk *sk) FmtNumber(num float64, v uint64) string {

	s := strconv.FormatFloat(math.Abs(num), 'f', int(v), 64)
	l := len(s) + 2 + 2*len(s[:len(s)-int(v)-1])/3
	count := 0
	inWhole := v == 0
	b := make([]byte, 0, l)

	for i := len(s) - 1; i >= 0; i-- {

		if s[i] == '.' {
			b = append(b, sk.decimal[0])
			inWhole = true
			continue
		}

		if inWhole {
			if count == 3 {
				for j := len(sk.group) - 1; j >= 0; j-- {
					b = append(b, sk.group[j])
				}
				count = 1
			} else {
				count++
			}
		}

		b = append(b, s[i])
	}

	if num < 0 {
		b = append(b, sk.minus[0])
	}

	// reverse
	for i, j := 0, len(b)-1; i < j; i, j = i+1, j-1 {
		b[i], b[j] = b[j], b[i]
	}

	return string(b)
}

// FmtPercent returns 'num' with digits/precision of 'v' for 'sk' and handles both Whole and Real numbers based on 'v'
// NOTE: 'num' passed into FmtPercent is assumed to be in percent already
func (sk *sk) FmtPercent(num float64, v uint64) string {
	s := strconv.FormatFloat(math.Abs(num), 'f', int(v), 64)
	l := len(s) + 5
	b := make([]byte, 0, l)

	for i := len(s) - 1; i >= 0; i-- {

		if s[i] == '.' {
			b = append(b, sk.decimal[0])
			continue
		}

		b = append(b, s[i])
	}

	if num < 0 {
		b = append(b, sk.minus[0])
	}

	// reverse
	for i, j := 0, len(b)-1; i < j; i, j = i+1, j-1 {
		b[i], b[j] = b[j], b[i]
	}

	b = append(b, sk.percentSuffix...)

	b = append(b, sk.percent...)

	return string(b)
}

// FmtCurrency returns the currency representation of 'num' with digits/precision of 'v' for 'sk'
func (sk *sk) FmtCurrency(num float64, v uint64, currency currency.Type) string {

	s := strconv.FormatFloat(math.Abs(num), 'f', int(v), 64)
	symbol := sk.currencies[currency]
	l := len(s) + len(symbol) + 4 + 2*len(s[:len(s)-int(v)-1])/3
	count := 0
	inWhole := v == 0
	b := make([]byte, 0, l)

	for i := len(s) - 1; i >= 0; i-- {

		if s[i] == '.' {
			b = append(b, sk.decimal[0])
			inWhole = true
			continue
		}

		if inWhole {
			if count == 3 {
				for j := len(sk.group) - 1; j >= 0; j-- {
					b = append(b, sk.group[j])
				}
				count = 1
			} else {
				count++
			}
		}

		b = append(b, s[i])
	}

	if num < 0 {
		b = append(b, sk.minus[0])
	}

	// reverse
	for i, j := 0, len(b)-1; i < j; i, j = i+1, j-1 {
		b[i], b[j] = b[j], b[i]
	}

	if int(v) < 2 {

		if v == 0 {
			b = append(b, sk.decimal...)
		}

		for i := 0; i < 2-int(v); i++ {
			b = append(b, '0')
		}
	}

	b = append(b, sk.currencyPositiveSuffix...)

	b = append(b, symbol...)

	return string(b)
}

// FmtAccounting returns the currency representation of 'num' with digits/precision of 'v' for 'sk'
// in accounting notation.
func (sk *sk) FmtAccounting(num float64, v uint64, currency currency.Type) string {

	s := strconv.FormatFloat(math.Abs(num), 'f', int(v), 64)
	symbol := sk.currencies[currency]
	l := len(s) + len(symbol) + 6 + 2*len(s[:len(s)-int(v)-1])/3
	count := 0
	inWhole := v == 0
	b := make([]byte, 0, l)

	for i := len(s) - 1; i >= 0; i-- {

		if s[i] == '.' {
			b = append(b, sk.decimal[0])
			inWhole = true
			continue
		}

		if inWhole {
			if count == 3 {
				for j := len(sk.group) - 1; j >= 0; j-- {
					b = append(b, sk.group[j])
				}
				count = 1
			} else {
				count++
			}
		}

		b = append(b, s[i])
	}

	if num < 0 {

		b = append(b, sk.currencyNegativePrefix[0])

	}

	// reverse
	for i, j := 0, len(b)-1; i < j; i, j = i+1, j-1 {
		b[i], b[j] = b[j], b[i]
	}

	if int(v) < 2 {

		if v == 0 {
			b = append(b, sk.decimal...)
		}

		for i := 0; i < 2-int(v); i++ {
			b = append(b, '0')
		}
	}

	if num < 0 {
		b = append(b, sk.currencyNegativeSuffix...)
		b = append(b, symbol...)
	} else {

		b = append(b, sk.currencyPositiveSuffix...)
		b = append(b, symbol...)
	}

	return string(b)
}

// FmtDateShort returns the short date representation of 't' for 'sk'
func (sk *sk) FmtDateShort(t time.Time) string {

	b := make([]byte, 0, 32)

	b = strconv.AppendInt(b, int64(t.Day()), 10)
	b = append(b, []byte{0x2e}...)
	b = strconv.AppendInt(b, int64(t.Month()), 10)
	b = append(b, []byte{0x2e}...)

	if t.Year() > 9 {
		b = append(b, strconv.Itoa(t.Year())[2:]...)
	} else {
		b = append(b, strconv.Itoa(t.Year())[1:]...)
	}

	return string(b)
}

// FmtDateMedium returns the medium date representation of 't' for 'sk'
func (sk *sk) FmtDateMedium(t time.Time) string {

	b := make([]byte, 0, 32)

	b = strconv.AppendInt(b, int64(t.Day()), 10)
	b = append(b, []byte{0x2e, 0x20}...)
	b = strconv.AppendInt(b, int64(t.Month()), 10)
	b = append(b, []byte{0x2e, 0x20}...)
	b = strconv.AppendInt(b, int64(t.Year()), 10)

	return string(b)
}

// FmtDateLong returns the long date representation of 't' for 'sk'
func (sk *sk) FmtDateLong(t time.Time) string {

	b := make([]byte, 0, 32)

	b = strconv.AppendInt(b, int64(t.Day()), 10)
	b = append(b, []byte{0x2e, 0x20}...)
	b = append(b, sk.monthsWide[t.Month()]...)
	b = append(b, []byte{0x20}...)
	b = strconv.AppendInt(b, int64(t.Year()), 10)

	return string(b)
}

// FmtDateFull returns the full date representation of 't' for 'sk'
func (sk *sk) FmtDateFull(t time.Time) string {

	b := make([]byte, 0, 32)

	b = append(b, sk.daysWide[t.Weekday()]...)
	b = append(b, []byte{0x2c, 0x20}...)
	b = strconv.AppendInt(b, int64(t.Day()), 10)
	b = append(b, []byte{0x2e, 0x20}...)
	b = append(b, sk.monthsWide[t.Month()]...)
	b = append(b, []byte{0x20}...)
	b = strconv.AppendInt(b, int64(t.Year()), 10)

	return string(b)
}

// FmtTimeShort returns the short time representation of 't' for 'sk'
func (sk *sk) FmtTimeShort(t time.Time) string {

	b := make([]byte, 0, 32)

	b = strconv.AppendInt(b, int64(t.Hour()), 10)
	b = append(b, sk.timeSeparator...)

	if t.Minute() < 10 {
		b = append(b, '0')
	}

	b = strconv.AppendInt(b, int64(t.Minute()), 10)

	return string(b)
}

// FmtTimeMedium returns the medium time representation of 't' for 'sk'
func (sk *sk) FmtTimeMedium(t time.Time) string {

	b := make([]byte, 0, 32)

	b = strconv.AppendInt(b, int64(t.Hour()), 10)
	b = append(b, sk.timeSeparator...)

	if t.Minute() < 10 {
		b = append(b, '0')
	}

	b = strconv.AppendInt(b, int64(t.Minute()), 10)
	b = append(b, sk.timeSeparator...)

	if t.Second() < 10 {
		b = append(b, '0')
	}

	b = strconv.AppendInt(b, int64(t.Second()), 10)

	return string(b)
}

// FmtTimeLong returns the long time representation of 't' for 'sk'
func (sk *sk) FmtTimeLong(t time.Time) string {

	b := make([]byte, 0, 32)

	b = strconv.AppendInt(b, int64(t.Hour()), 10)
	b = append(b, sk.timeSeparator...)

	if t.Minute() < 10 {
		b = append(b, '0')
	}

	b = strconv.AppendInt(b, int64(t.Minute()), 10)
	b = append(b, sk.timeSeparator...)

	if t.Second() < 10 {
		b = append(b, '0')
	}

	b = strconv.AppendInt(b, int64(t.Second()), 10)
	b = append(b, []byte{0x20}...)

	tz, _ := t.Zone()
	b = append(b, tz...)

	return string(b)
}

// FmtTimeFull returns the full time representation of 't' for 'sk'
func (sk *sk) FmtTimeFull(t time.Time) string {

	b := make([]byte, 0, 32)

	b = strconv.AppendInt(b, int64(t.Hour()), 10)
	b = append(b, sk.timeSeparator...)

	if t.Minute() < 10 {
		b = append(b, '0')
	}

	b = strconv.AppendInt(b, int64(t.Minute()), 10)
	b = append(b, sk.timeSeparator...)

	if t.Second() < 10 {
		b = append(b, '0')
	}

	b = strconv.AppendInt(b, int64(t.Second()), 10)
	b = append(b, []byte{0x20}...)

	tz, _ := t.Zone()

	if btz, ok := sk.timezones[tz]; ok {
		b = append(b, btz...)
	} else {
		b = append(b, tz...)
	}

	return string(b)
}
