package fy

import (
	"math"
	"strconv"
	"time"

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

type fy 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
	currencyPositivePrefix 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 'fy' locale
func New() locales.Translator {
	return &fy{
		locale:                 "fy",
		pluralsCardinal:        []locales.PluralRule{2, 6},
		pluralsOrdinal:         []locales.PluralRule{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 ", "AU$", "AWG ", "AZM ", "AZN ", "BAD ", "BAM ", "BAN ", "BBD ", "BDT ", "BEC ", "BEF ", "BEL ", "BGL ", "BGM ", "BGN ", "BGO ", "BHD ", "BIF ", "BMD ", "BND ", "BOB ", "BOL ", "BOP ", "BOV ", "BRB ", "BRC ", "BRE ", "R$", "BRN ", "BRR ", "BRZ ", "BSD ", "BTN ", "BUK ", "BWP ", "BYB ", "BYR ", "BZD ", "C$", "CDF ", "CHE ", "CHF ", "CHW ", "CLE ", "CLF ", "CLP ", "CNX ", "CN¥", "COP ", "COU ", "CRC ", "CSD ", "CSK ", "CUC ", "CUP ", "CVE ", "CYP ", "CZK ", "DDM ", "DEM ", "DJF ", "DKK ", "DOP ", "DZD ", "ECS ", "ECV ", "EEK ", "EGP ", "ERN ", "ESA ", "ESB ", "ESP ", "ETB ", "€", "FIM ", "FJ$", "FKP ", "FRF ", "£", "GEK ", "GEL ", "GHC ", "GHS ", "GIP ", "GMD ", "GNF ", "GNS ", "GQE ", "GRD ", "GTQ ", "GWE ", "GWP ", "GYD ", "HK$", "HNL ", "HRD ", "HRK ", "HTG ", "HUF ", "IDR ", "IEP", "ILP ", "ILR ", "₪", "₹", "IQD ", "IRR ", "ISJ ", "ISK ", "ITL ", "JMD ", "JOD ", "JP¥", "KES ", "KGS ", "KHR ", "KMF ", "KPW ", "KRH ", "KRO ", "₩", "KWD ", "KYD ", "KZT ", "LAK ", "LBP ", "LKR ", "LRD ", "LSL ", "LTL ", "LTT ", "LUC ", "LUF ", "LUL ", "LVL ", "LVR ", "LYD ", "MAD ", "MAF ", "MCF ", "MDC ", "MDL ", "MGA ", "MGF ", "MKD ", "MKN ", "MLF ", "MMK ", "MNT ", "MOP ", "MRO ", "MTL ", "MTP ", "MUR ", "MVP ", "MVR ", "MWK ", "MX$", "MXP ", "MXV ", "MYR ", "MZE ", "MZM ", "MZN ", "NAD ", "NGN ", "NIC ", "NIO ", "NLG ", "NOK ", "NPR ", "NZ$", "OMR ", "PAB ", "PEI ", "PEN ", "PES ", "PGK ", "PHP ", "PKR ", "PLN ", "PLZ ", "PTE ", "PYG ", "QAR ", "RHD ", "ROL ", "RON ", "RSD ", "RUB ", "RUR ", "RWF ", "SAR ", "SI$", "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$", "TZS ", "UAH ", "UAK ", "UGS ", "UGX ", "US$", "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 ", "XPF", "XPT ", "XRE", "XSU ", "XTS", "XUA", "XXX", "YDD ", "YER ", "YUD ", "YUM ", "YUN ", "YUR ", "ZAL ", "ZAR ", "ZMK ", "ZMW ", "ZRN ", "ZRZ ", "ZWD ", "ZWL ", "ZWR "},
		currencyPositivePrefix: " ",
		currencyNegativePrefix: "( ",
		currencyNegativeSuffix: ")",
		monthsAbbreviated:      []string{"", "jan.", "feb.", "mrt.", "apr.", "mai.", "jun.", "jul.", "aug.", "sep.", "okt.", "nov.", "des."},
		monthsNarrow:           []string{"", "J", "F", "M", "A", "M", "J", "J", "A", "S", "O", "N", "D"},
		monthsWide:             []string{"", "jannewaris", "febrewaris", "maart", "april", "maaie", "juny", "july", "augustus", "septimber", "oktober", "novimber", "desimber"},
		daysAbbreviated:        []string{"si", "mo", "ti", "wo", "to", "fr", "so"},
		daysNarrow:             []string{"Z", "M", "D", "W", "D", "V", "Z"},
		daysShort:              []string{"si", "mo", "ti", "wo", "to", "fr", "so"},
		daysWide:               []string{"snein", "moandei", "tiisdei", "woansdei", "tongersdei", "freed", "sneon"},
		periodsAbbreviated:     []string{"AM", "PM"},
		periodsNarrow:          []string{"AM", "PM"},
		periodsWide:            []string{"AM", "PM"},
		erasAbbreviated:        []string{"f.Kr.", "n.Kr."},
		erasNarrow:             []string{"f.K.", "n.K."},
		erasWide:               []string{"Foar Kristus", "nei Kristus"},
		timezones:              map[string]string{"ARST": "Argentynske simmertiid", "NZDT": "Nij-Seelânske simmertiid", "LHDT": "Lord Howe-eilânske simmertiid", "GYT": "Guyaanske tiid", "AKST": "Alaska-standerttiid", "AST": "Atlantic-standerttiid", "HNT": "Newfoundlânske-standerttiid", "IST": "Yndiaaske tiid", "AWST": "West-Australyske standerttiid", "ADT": "Atlantic-simmertiid", "HAT": "Newfoundlânske-simmertiid", "AEST": "East-Australyske standerttiid", "JDT": "Japanske simmertiid", "PDT": "Pasifik-simmertiid", "COT": "Kolombiaanske standerttiid", "HAST": "Hawaii-Aleoetyske standerttiid", "ACDT": "Midden-Australyske simmertiid", "AWDT": "West-Australyske simmertiid", "WAST": "West-Afrikaanske simmertiid", "NZST": "Nij-Seelânske standerttiid", "CST": "Central-standerttiid", "HADT": "Hawaii-Aleoetyske simmertiid", "OEZ": "East-Europeeske standerttiid", "SRT": "Surinaamske tiid", "CHAST": "Chatham standerttiid", "MYT": "Maleisyske tiid", "BOT": "Boliviaanske tiid", "UYT": "Uruguayaanske standerttiid", "HKT": "Hongkongse standerttiid", "WART": "West-Argentynske standerttiid", "WIT": "East-Yndonezyske tiid", "TMST": "Turkmeense simmertiid", "UYST": "Uruguayaanske simmertiid", "SGT": "Singaporese standerttiid", "TMT": "Turkmeense standerttiid", "WARST": "West-Argentynske simmertiid", "MST": "Macause standerttiid", "MEZ": "Midden-Europeeske standerttiid", "VET": "Fenezolaanske tiid", "EAT": "East-Afrikaanske tiid", "ACWDT": "Midden-Australyske westelijke simmertiid", "CAT": "Sintraal-Afrikaanske tiid", "SAST": "Sûd-Afrikaanske tiid", "GFT": "Frâns-Guyaanske tiid", "ACST": "Midden-Australyske standerttiid", "ChST": "Chamorro-tiid", "CLST": "Sileenske simmertiid", "∅∅∅": "Brazyljaanske simmertiid", "LHST": "Lord Howe-eilânske standerttiid", "CDT": "Central-simmertiid", "AEDT": "East-Australyske simmertiid", "AKDT": "Alaska-simmertiid", "CHADT": "Chatham simmertiid", "EST": "Eastern-standerttiid", "BT": "Bhutaanske tiid", "WAT": "West-Afrikaanske standerttiid", "GMT": "Greenwich Mean Time", "OESZ": "East-Europeeske simmertiid", "MDT": "Macause simmertiid", "WEZ": "West-Europeeske standerttiid", "WITA": "Sintraal-Yndonezyske tiid", "ART": "Argentynske standerttiid", "CLT": "Sileenske standerttiid", "WESZ": "West-Europeeske simmertiid", "COST": "Kolombiaanske simmertiid", "ECT": "Ecuadoraanske tiid", "EDT": "Eastern-simmertiid", "HKST": "Hongkongse simmertiid", "ACWST": "Midden-Australyske westelijke standerttiid", "WIB": "West-Yndonezyske tiid", "JST": "Japanske standerttiid", "PST": "Pasifik-standerttiid", "MESZ": "Midden-Europeeske simmertiid"},
	}
}

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

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

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

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

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

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

	if i == 1 && v == 0 {
		return locales.PluralRuleOne
	}

	return locales.PluralRuleOther
}

// OrdinalPluralRule returns the ordinal PluralRule given 'num' and digits/precision of 'v' for 'fy'
func (fy *fy) 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 'fy'
func (fy *fy) 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 (fy *fy) MonthAbbreviated(month time.Month) string {
	return fy.monthsAbbreviated[month]
}

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

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

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

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

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

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

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

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

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

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

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

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

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

// FmtNumber returns 'num' with digits/precision of 'v' for 'fy' and handles both Whole and Real numbers based on 'v'
func (fy *fy) 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, fy.decimal[0])
			inWhole = true
			continue
		}

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

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

	if num < 0 {
		b = append(b, fy.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 'fy' and handles both Whole and Real numbers based on 'v'
// NOTE: 'num' passed into FmtPercent is assumed to be in percent already
func (fy *fy) 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, fy.decimal[0])
			continue
		}

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

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

	return string(b)
}

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

	s := strconv.FormatFloat(math.Abs(num), 'f', int(v), 64)
	symbol := fy.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, fy.decimal[0])
			inWhole = true
			continue
		}

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

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

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

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

	if num < 0 {
		b = append(b, fy.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, fy.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 'fy'
// in accounting notation.
func (fy *fy) FmtAccounting(num float64, v uint64, currency currency.Type) string {

	s := strconv.FormatFloat(math.Abs(num), 'f', int(v), 64)
	symbol := fy.currencies[currency]
	l := len(s) + len(symbol) + 6 + 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, fy.decimal[0])
			inWhole = true
			continue
		}

		if inWhole {
			if count == 3 {
				b = append(b, fy.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])
		}

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

	} else {

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

		for j := len(fy.currencyPositivePrefix) - 1; j >= 0; j-- {
			b = append(b, fy.currencyPositivePrefix[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, fy.decimal...)
		}

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

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

	return string(b)
}

// FmtDateShort returns the short date representation of 't' for 'fy'
func (fy *fy) 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{0x2d}...)

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

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

	b = append(b, []byte{0x2d}...)

	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 'fy'
func (fy *fy) 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, fy.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 'fy'
func (fy *fy) 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, fy.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 'fy'
func (fy *fy) FmtDateFull(t time.Time) string {

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

	b = append(b, fy.daysWide[t.Weekday()]...)
	b = append(b, []byte{0x20}...)
	b = strconv.AppendInt(b, int64(t.Day()), 10)
	b = append(b, []byte{0x20}...)
	b = append(b, fy.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 'fy'
func (fy *fy) 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, fy.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 'fy'
func (fy *fy) 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, fy.timeSeparator...)

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

	b = strconv.AppendInt(b, int64(t.Minute()), 10)
	b = append(b, fy.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 'fy'
func (fy *fy) 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, fy.timeSeparator...)

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

	b = strconv.AppendInt(b, int64(t.Minute()), 10)
	b = append(b, fy.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 'fy'
func (fy *fy) 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, fy.timeSeparator...)

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

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

	return string(b)
}
