package ga

import (
	"math"
	"strconv"
	"time"

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

type ga struct {
	locale                 string
	pluralsCardinal        []locales.PluralRule
	pluralsOrdinal         []locales.PluralRule
	pluralsRange           []locales.PluralRule
	decimal                string
	group                  string
	minus                  string
	percent                string
	perMille               string
	timeSeparator          string
	inifinity              string
	currencies             []string // idx = enum of currency code
	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 'ga' locale
func New() locales.Translator {
	return &ga{
		locale:                 "ga",
		pluralsCardinal:        []locales.PluralRule{2, 3, 4, 5, 6},
		pluralsOrdinal:         []locales.PluralRule{2, 6},
		pluralsRange:           nil,
		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 ", "A$", "AWG", "AZM", "AZN", "BAD", "BAM", "BAN", "BBD", "BDT", "BEC ", "BEF ", "BEL ", "BGL", "BGM ", "BGN", "BGO", "BHD", "BIF", "BMD", "BND", "BOB", "BOL", "BOP", "BOV", "BRB", "BRC", "BRE", "R$", "BRN", "BRR", "BRZ", "BSD", "BTN", "BUK", "BWP", "BYB", "BYR", "BZD", "CA$", "CDF", "CHE ", "CHF", "CHW ", "CLE", "CLF", "CLP", "CNX ", "CN¥", "COP", "COU", "CRC", "CSD", "CSK", "CUC", "CUP", "CVE", "CYP", "CZK", "DDM ", "DEM ", "DJF", "DKK", "DOP", "DZD", "ECS", "ECV", "EEK ", "EGP", "ERN", "ESA", "ESB", "ESP", "ETB", "€", "FIM ", "FJD", "FKP", "FRF ", "£", "GEK ", "GEL", "GHC", "GHS", "GIP", "GMD", "GNF", "GNS ", "GQE", "GRD", "GTQ", "GWE ", "GWP ", "GYD", "HK$", "HNL", "HRD ", "HRK", "HTG", "HUF", "IDR", "IEP ", "ILP ", "ILR ", "₪", "₹", "IQD", "IRR", "ISJ ", "ISK", "ITL", "JMD", "JOD", "¥", "KES", "KGS", "KHR", "KMF", "KPW", "KRH", "KRO", "₩", "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$", "MXP", "MXV", "MYR", "MZE ", "MZM ", "MZN", "NAD", "NGN", "NIC", "NIO", "NLG ", "NOK", "NPR", "NZ$", "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", "฿", "TJR ", "TJS", "TMM ", "TMT", "TND", "TOP", "TPE ", "TRL", "TRY", "TTD", "NT$", "TZS", "UAH", "UAK ", "UGS ", "UGX", "$", "USN", "USS", "UYI ", "UYP", "UYU", "UZS", "VEB", "VEF", "₫", "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 "},
		currencyNegativePrefix: "(",
		currencyNegativeSuffix: ")",
		monthsAbbreviated:      []string{"", "Ean", "Feabh", "Márta", "Aib", "Beal", "Meith", "Iúil", "Lún", "MFómh", "DFómh", "Samh", "Noll"},
		monthsNarrow:           []string{"", "E", "F", "M", "A", "B", "M", "I", "L", "M", "D", "S", "N"},
		monthsWide:             []string{"", "Eanáir", "Feabhra", "Márta", "Aibreán", "Bealtaine", "Meitheamh", "Iúil", "Lúnasa", "Meán Fómhair", "Deireadh Fómhair", "Samhain", "Nollaig"},
		daysAbbreviated:        []string{"Domh", "Luan", "Máirt", "Céad", "Déar", "Aoine", "Sath"},
		daysNarrow:             []string{"D", "L", "M", "C", "D", "A", "S"},
		daysShort:              []string{"Do", "Lu", "Má", "Cé", "Dé", "Ao", "Sa"},
		daysWide:               []string{"Dé Domhnaigh", "Dé Luain", "Dé Máirt", "Dé Céadaoin", "Déardaoin", "Dé hAoine", "Dé Sathairn"},
		periodsAbbreviated:     []string{"a.m.", "p.m."},
		periodsNarrow:          []string{"a", "p"},
		periodsWide:            []string{"a.m.", "p.m."},
		erasAbbreviated:        []string{"RC", "AD"},
		erasNarrow:             []string{"RC", "AD"},
		erasWide:               []string{"Roimh Chríost", "Anno Domini"},
		timezones:              map[string]string{"EDT": "Am Samhraidh an Oirthir", "WIT": "Am Oirthear na hIndinéise", "TMT": "Am Caighdeánach na Tuircméanastáine", "JST": "Am Caighdeánach na Seapáine", "MESZ": "Am Samhraidh Lár na hEorpa", "MST": "Am Caighdeánach na Sléibhte", "CHAST": "Am Caighdeánach Chatham", "CHADT": "Am Samhraidh Chatham", "PDT": "Am Samhraidh an Aigéin Chiúin", "BOT": "Am na Bolaive", "WAST": "Am Samhraidh Iarthar na hAfraice", "TMST": "Am Samhraidh na Tuircméanastáine", "SRT": "Am Shuranam", "WEZ": "Am Caighdeánach Iarthar na hEorpa", "CAT": "Am Lár na hAfraice", "WART": "Am Caighdeánach Iarthar na hAirgintíne", "JDT": "Am Samhraidh na Seapáine", "MEZ": "Am Caighdeánach Lár na hEorpa", "NZDT": "Am Samhraidh na Nua-Shéalainne", "AST": "Am Caighdeánach an Atlantaigh", "WITA": "Am Lár na hIndinéise", "ACWST": "Am Caighdeánach Mheániarthar na hAstráile", "ChST": "Am Caighdeánach Seamórach", "HNT": "Am Caighdeánach Thalamh an Éisc", "MYT": "Am na Malaeisia", "UYT": "Am Caighdeánach Uragua", "HAST": "Am Caighdeánach Haváí-Ailiúit", "WARST": "Am Samhraidh Iarthar na hAirgintíne", "BT": "Am na Bútáine", "UYST": "Am Samhraidh Uragua", "MDT": "Am Samhraidh na Sléibhte", "HADT": "Am Samhraidh Haváí-Ailiúit", "SGT": "Am Caighdeánach Shingeapór", "WAT": "Am Caighdeánach Iarthar na hAfraice", "COST": "Am Samhraidh na Colóime", "HKT": "Am Caighdeánach Hong Cong", "AKST": "Am Caighdeánach Alasca", "AKDT": "Am Samhraidh Alasca", "COT": "Am Caighdeánach na Colóime", "GFT": "Am Ghuáin na Fraince", "OEZ": "Am Caighdeánach Oirthear na hEorpa", "GYT": "Am na Guáine", "CST": "Am Caighdeánach Lárnach", "CLST": "Am Samhraidh na Sile", "WESZ": "Am Samhraidh Iarthar na hEorpa", "ACWDT": "Am Samhraidh Mheániarthar na hAstráile", "AWST": "Am Caighdeánach Iarthar na hAstráile", "CDT": "Am Samhraidh Lárnach", "WIB": "Am Iarthar na hIndinéise", "OESZ": "Am Samhraidh Oirthear na hEorpa", "ART": "Am Caighdeánach na hAirgintíne", "LHDT": "Am Samhraidh Lord Howe", "AEST": "Am Caighdeánach Oirthear na hAstráile", "ACDT": "Am Samhraidh Lár na hAstráile", "ARST": "Am Samhraidh na hAirgintíne", "LHST": "Am Caighdeánach Lord Howe", "AWDT": "Am Samhraidh Iarthar na hAstráile", "EST": "Am Caighdeánach an Oirthir", "IST": "Am Caighdeánach na hIndia", "GMT": "Meán-Am Greenwich", "PST": "Am Caighdeánach an Aigéin Chiúin", "NZST": "Am Caighdeánach na Nua-Shéalainne", "SAST": "Am Caighdeánach na hAfraice Theas", "EAT": "Am Oirthear na hAfraice", "ACST": "Am Caighdeánach Lár na hAstráile", "CLT": "Am Caighdeánach na Sile", "ADT": "Am Samhraidh an Atlantaigh", "HKST": "Am Samhraidh Hong Cong", "HAT": "Am Samhraidh Thalamh an Éisc", "VET": "Am Veiniséala", "AEDT": "Am Samhraidh Oirthear na hAstráile", "∅∅∅": "Am Samhraidh Bhrasília", "ECT": "Am Eacuadór"},
	}
}

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

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

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

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

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

	n := math.Abs(num)

	if n == 1 {
		return locales.PluralRuleOne
	} else if n == 2 {
		return locales.PluralRuleTwo
	} else if n >= 3 && n <= 6 {
		return locales.PluralRuleFew
	} else if n >= 7 && n <= 10 {
		return locales.PluralRuleMany
	}

	return locales.PluralRuleOther
}

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

	n := math.Abs(num)

	if n == 1 {
		return locales.PluralRuleOne
	}

	return locales.PluralRuleOther
}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

	s := strconv.FormatFloat(math.Abs(num), 'f', int(v), 64)
	l := len(s) + 2 + 1*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, ga.decimal[0])
			inWhole = true
			continue
		}

		if inWhole {
			if count == 3 {
				b = append(b, ga.group[0])
				count = 1
			} else {
				count++
			}
		}

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

	if num < 0 {
		b = append(b, ga.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 'ga' and handles both Whole and Real numbers based on 'v'
// NOTE: 'num' passed into FmtPercent is assumed to be in percent already
func (ga *ga) FmtPercent(num float64, v uint64) string {
	s := strconv.FormatFloat(math.Abs(num), 'f', int(v), 64)
	l := len(s) + 3
	b := make([]byte, 0, l)

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

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

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

	if num < 0 {
		b = append(b, ga.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, ga.percent...)

	return string(b)
}

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

	s := strconv.FormatFloat(math.Abs(num), 'f', int(v), 64)
	symbol := ga.currencies[currency]
	l := len(s) + len(symbol) + 2 + 1*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, ga.decimal[0])
			inWhole = true
			continue
		}

		if inWhole {
			if count == 3 {
				b = append(b, ga.group[0])
				count = 1
			} else {
				count++
			}
		}

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

	for j := len(symbol) - 1; j >= 0; j-- {
		b = append(b, symbol[j])
	}

	if num < 0 {
		b = append(b, ga.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, ga.decimal...)
		}

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

	return string(b)
}

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

	s := strconv.FormatFloat(math.Abs(num), 'f', int(v), 64)
	symbol := ga.currencies[currency]
	l := len(s) + len(symbol) + 4 + 1*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, ga.decimal[0])
			inWhole = true
			continue
		}

		if inWhole {
			if count == 3 {
				b = append(b, ga.group[0])
				count = 1
			} else {
				count++
			}
		}

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

	if num < 0 {

		for j := len(symbol) - 1; j >= 0; j-- {
			b = append(b, symbol[j])
		}

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

	} else {

		for j := len(symbol) - 1; j >= 0; j-- {
			b = append(b, symbol[j])
		}

	}

	// 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, ga.decimal...)
		}

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

	if num < 0 {
		b = append(b, ga.currencyNegativeSuffix...)
	}

	return string(b)
}

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

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

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

	b = strconv.AppendInt(b, int64(t.Day()), 10)
	b = append(b, []byte{0x2f}...)

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

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

	b = append(b, []byte{0x2f}...)
	b = strconv.AppendInt(b, int64(t.Year()), 10)

	return string(b)
}

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

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

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

	return string(b)
}

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

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

	b = strconv.AppendInt(b, int64(t.Day()), 10)
	b = append(b, []byte{0x20}...)
	b = append(b, ga.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 'ga'
func (ga *ga) FmtDateFull(t time.Time) string {

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

	b = append(b, ga.daysWide[t.Weekday()]...)
	b = append(b, []byte{0x20}...)
	b = strconv.AppendInt(b, int64(t.Day()), 10)
	b = append(b, []byte{0x20}...)
	b = append(b, ga.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 'ga'
func (ga *ga) FmtTimeShort(t time.Time) string {

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

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

	b = strconv.AppendInt(b, int64(t.Hour()), 10)
	b = append(b, ga.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 'ga'
func (ga *ga) FmtTimeMedium(t time.Time) string {

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

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

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

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

	b = strconv.AppendInt(b, int64(t.Minute()), 10)
	b = append(b, ga.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 'ga'
func (ga *ga) FmtTimeLong(t time.Time) string {

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

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

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

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

	b = strconv.AppendInt(b, int64(t.Minute()), 10)
	b = append(b, ga.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 'ga'
func (ga *ga) FmtTimeFull(t time.Time) string {

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

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

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

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

	b = strconv.AppendInt(b, int64(t.Minute()), 10)
	b = append(b, ga.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 := ga.timezones[tz]; ok {
		b = append(b, btz...)
	} else {
		b = append(b, tz...)
	}

	return string(b)
}
