use std::{borrow::Cow, str::FromStr, vec};

use anyhow::Result;
use fancy_regex::Regex;

use crate::{model::Language, util};

pub const LANGUAGES: [Language; 83] = [
    Language::Af,
    Language::Am,
    Language::Ar,
    Language::As,
    Language::Az,
    Language::Be,
    Language::Bg,
    Language::Bn,
    Language::Bs,
    Language::Ca,
    Language::Cs,
    Language::Da,
    Language::De,
    Language::El,
    Language::En,
    Language::EnGb,
    Language::EnIn,
    Language::Es,
    Language::Es419,
    Language::EsUs,
    Language::Et,
    Language::Eu,
    Language::Fa,
    Language::Fi,
    Language::Fil,
    Language::Fr,
    Language::FrCa,
    Language::Gl,
    Language::Gu,
    Language::Hi,
    Language::Hr,
    Language::Hu,
    Language::Hy,
    Language::Id,
    Language::Is,
    Language::It,
    Language::Iw,
    Language::Ja,
    Language::Ka,
    Language::Kk,
    Language::Km,
    Language::Kn,
    Language::Ko,
    Language::Ky,
    Language::Lo,
    Language::Lt,
    Language::Lv,
    Language::Mk,
    Language::Ml,
    Language::Mn,
    Language::Mr,
    Language::Ms,
    Language::My,
    Language::Ne,
    Language::Nl,
    Language::No,
    Language::Or,
    Language::Pa,
    Language::Pl,
    Language::Pt,
    Language::PtPt,
    Language::Ro,
    Language::Ru,
    Language::Si,
    Language::Sk,
    Language::Sl,
    Language::Sq,
    Language::Sr,
    Language::SrLatn,
    Language::Sv,
    Language::Sw,
    Language::Ta,
    Language::Te,
    Language::Th,
    Language::Tr,
    Language::Uk,
    Language::Ur,
    Language::Uz,
    Language::Vi,
    Language::ZhCn,
    Language::ZhHk,
    Language::ZhTw,
    Language::Zu,
];

#[derive(Debug)]
pub struct TimeagoPattern<'a> {
    word_separator: &'a str,
    seconds: Vec<&'a str>,
    minutes: Vec<&'a str>,
    hours: Vec<&'a str>,
    days: Vec<&'a str>,
    weeks: Vec<&'a str>,
    months: Vec<&'a str>,
    years: Vec<&'a str>,
    special_cases: Vec<(&'a str, u64)>,
}

impl From<Language> for TimeagoPattern<'_> {
    fn from(language: Language) -> Self {
        match language {
            Language::Af => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["sekonde", "sekondes"],
                minutes: vec!["minute", "minuut"],
                hours: vec!["ure", "uur"],
                days: vec!["dae", "dag"],
                weeks: vec!["week", "weke"],
                months: vec!["maand", "maande"],
                years: vec!["jaar"],
                special_cases: vec![],
            },
            Language::Am => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["ሰኮንዶች", "ሴኮንድ"],
                minutes: vec!["ደቂቃ", "ደቂቃዎች"],
                hours: vec!["ሰዓት", "ሰዓቶች"],
                // INFO: add days[0]
                days: vec!["ቀናት", "ቀን", "ቀኖች"],
                weeks: vec!["ሳምንታት", "ሳምንት"],
                months: vec!["ወራት", "ወር"],
                years: vec!["ዓመታት", "ዓመት"],
                special_cases: vec![],
            },
            Language::Ar => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["ثانية", "ثانيتين", "ثوانٍ"],
                minutes: vec!["دقائق", "دقيقة", "دقيقتين"],
                hours: vec!["ساعات", "ساعة", "ساعتين"],
                days: vec!["أيام", "يوم", "يومين", "يومًا"],
                weeks: vec!["أسابيع", "أسبوع", "أسبوعين"],
                months: vec!["أشهر", "شهر", "شهرين", "شهرًا"],
                years: vec!["سنة", "سنتين", "سنوات"],
                special_cases: vec![
                    ("ساعتين", 2 * 3600),
                    ("يومين", 2 * 3600 * 24),
                    ("أسبوعين", 2 * 3600 * 24 * 7),
                    ("شهرين", 2 * 3600 * 24 * 30),
                    ("سنتين", 2 * 3600 * 24 * 365),
                ],
            },
            // INFO: newly added
            Language::As => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["ছেকেণ্ড"],
                minutes: vec!["মিনিট"],
                hours: vec!["ঘণ্টা"],
                days: vec!["দিন"],
                weeks: vec!["সপ্তাহ"],
                months: vec!["মাহ"],
                years: vec!["বছৰৰ"],
                special_cases: vec![],
            },
            Language::Az => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["saniyə"],
                minutes: vec!["dəqiqə"],
                hours: vec!["saat"],
                days: vec!["gün"],
                weeks: vec!["həftə"],
                months: vec!["ay"],
                years: vec!["il"],
                special_cases: vec![],
            },
            Language::Be => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["секунд", "секунду", "секунды"],
                minutes: vec!["хвілін", "хвіліну", "хвіліны"],
                hours: vec!["гадзін", "гадзіну", "гадзіны"],
                days: vec!["дзень", "дзён", "дня", "дні"],
                weeks: vec!["тыдзень", "тыдня", "тыдні"],
                months: vec!["месяц", "месяца", "месяцы", "месяцаў"],
                years: vec!["год", "года", "гады", "гадоў"],
                special_cases: vec![],
            },
            Language::Bg => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["секунда", "секунди"],
                minutes: vec!["минута", "минути"],
                hours: vec!["час", "часа"],
                days: vec!["ден", "дни"],
                weeks: vec!["седмица", "седмици"],
                months: vec!["месец", "месеца"],
                years: vec!["година", "години"],
                special_cases: vec![],
            },
            Language::Bn => TimeagoPattern {
                word_separator: " ",
                // INFO: hours fixed
                seconds: vec!["সেকেন্ড"],
                minutes: vec!["মিনিট"],
                hours: vec!["ঘন্টা"],
                days: vec!["দিন"],
                weeks: vec!["সপ্তাহ"],
                months: vec!["মাস"],
                years: vec!["বছর"],
                special_cases: vec![],
            },
            Language::Bs => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["sekundi", "sekunde", "sekundu"],
                minutes: vec!["minuta", "minute", "minutu"],
                hours: vec!["h", "sat", "sata", "sati"],
                days: vec!["dan", "dana"],
                // INFO: fix sedmice (week plural)
                weeks: vec!["sedm.", "sedmice", "sedmicu"],
                months: vec!["mj.", "mjesec", "mjeseca", "mjeseci"],
                years: vec!["godina", "godine", "godinu"],
                special_cases: vec![],
            },
            Language::Ca => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["segon", "segons"],
                minutes: vec!["minut", "minuts"],
                hours: vec!["hora", "hores"],
                days: vec!["dia", "dies"],
                weeks: vec!["setmana", "setmanes"],
                months: vec!["mes", "mesos"],
                years: vec!["any", "anys"],
                special_cases: vec![],
            },
            Language::Cs => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["sekundami", "sekundou"],
                minutes: vec!["minutami", "minutou"],
                hours: vec!["hodinami", "hodinou"],
                days: vec!["dny", "včera"],
                weeks: vec!["týdnem", "týdny"],
                months: vec!["měsícem", "měsíci"],
                years: vec!["rokem", "roky", "lety"],
                special_cases: vec![],
            },
            Language::Da => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["sekund", "sekunder"],
                minutes: vec!["minut", "minutter"],
                hours: vec!["time", "timer"],
                days: vec!["dag", "dage"],
                weeks: vec!["uge", "uger"],
                months: vec!["måned", "måneder"],
                years: vec!["år"],
                special_cases: vec![],
            },
            Language::De => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["Sekunde", "Sekunden"],
                minutes: vec!["Minute", "Minuten"],
                hours: vec!["Stunde", "Stunden"],
                days: vec!["Tag", "Tagen"],
                weeks: vec!["Woche", "Wochen"],
                months: vec!["Monat", "Monaten"],
                years: vec!["Jahr", "Jahren"],
                special_cases: vec![],
            },
            Language::El => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["δευτερόλεπτα", "δευτερόλεπτο"],
                minutes: vec!["λεπτά", "λεπτό"],
                hours: vec!["ώρα", "ώρες"],
                days: vec!["ημέρα", "ημέρες"],
                weeks: vec!["εβδομάδα", "εβδομάδες"],
                months: vec!["μήνα", "μήνες"],
                // INFO: fixed years
                years: vec!["έτος", "έτη"],
                special_cases: vec![],
            },
            Language::En | Language::EnGb | Language::EnIn => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["second", "seconds"],
                minutes: vec!["minute", "minutes"],
                hours: vec!["hour", "hours"],
                days: vec!["day", "days"],
                weeks: vec!["week", "weeks"],
                months: vec!["month", "months"],
                years: vec!["year", "years"],
                special_cases: vec![],
            },
            Language::Es | Language::EsUs | Language::Es419 => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["segundo", "segundos"],
                minutes: vec!["minuto", "minutos"],
                hours: vec!["hora", "horas"],
                days: vec!["día", "días"],
                weeks: vec!["semana", "semanas"],
                months: vec!["mes", "meses"],
                years: vec!["año", "años"],
                special_cases: vec![],
            },
            Language::Et => TimeagoPattern {
                word_separator: " ",
                // INFO: corrected secs/min/weeks
                seconds: vec!["sekund", "sekundi", "sekundit"],
                minutes: vec!["minut", "minuti", "minutit"],
                hours: vec!["tunni"],
                days: vec!["päev", "päeva"],
                weeks: vec!["nädal", "nädala", "nädalat"],
                months: vec!["kuu", "kuud"],
                years: vec!["aasta", "aastat"],
                special_cases: vec![],
            },
            Language::Eu => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["segundo"],
                minutes: vec!["minutu"],
                hours: vec!["ordu", "ordubete"],
                days: vec!["egun"],
                weeks: vec!["aste", "astebete"],
                months: vec!["hilabete"],
                years: vec!["urte", "urtebete"],
                special_cases: vec![],
            },
            Language::Fa => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["ثانیه"],
                minutes: vec!["دقیقه"],
                hours: vec!["ساعت"],
                days: vec!["روز"],
                weeks: vec!["هفته"],
                months: vec!["ماه"],
                years: vec!["سال"],
                special_cases: vec![],
            },
            Language::Fi => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["sekunti", "sekuntia"],
                minutes: vec!["minuutti", "minuuttia"],
                hours: vec!["tunti", "tuntia"],
                days: vec!["päivä", "päivää"],
                weeks: vec!["viikko", "viikkoa"],
                months: vec!["kuukausi", "kuukautta"],
                years: vec!["vuosi", "vuotta"],
                special_cases: vec![],
            },
            Language::Fil => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["segundo"],
                minutes: vec!["minuto"],
                hours: vec!["oras"],
                days: vec!["araw"],
                weeks: vec!["linggo"],
                months: vec!["buwan"],
                years: vec!["taon"],
                special_cases: vec![],
            },
            Language::Fr | Language::FrCa => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["seconde", "secondes"],
                minutes: vec!["minute", "minutes"],
                hours: vec!["heure", "heures"],
                days: vec!["jour", "jours"],
                weeks: vec!["semaine", "semaines"],
                months: vec!["mois"],
                years: vec!["an", "ans"],
                special_cases: vec![],
            },
            Language::Gl => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["segundo", "segundos"],
                minutes: vec!["minuto", "minutos"],
                hours: vec!["hora", "horas"],
                days: vec!["día", "días"],
                weeks: vec!["semana", "semanas"],
                months: vec!["mes", "meses"],
                years: vec!["ano", "anos"],
                special_cases: vec![],
            },
            Language::Gu => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["સેકંડ"],
                minutes: vec!["મિનિટ"],
                hours: vec!["કલાક"],
                days: vec!["દિવસ"],
                weeks: vec!["અઠવાડિયા"],
                months: vec!["મહિના"],
                years: vec!["વર્ષ"],
                special_cases: vec![],
            },
            Language::Hi => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["सेकंड"],
                minutes: vec!["मिनट"],
                hours: vec!["घंटा", "घंटे"],
                days: vec!["दिन"],
                weeks: vec!["सप्ताह", "हफ़्ते"],
                // INFO: fix months
                months: vec!["माह", "महीना", "महीने"],
                years: vec!["वर्ष"],
                special_cases: vec![],
            },
            Language::Hr => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["sekunde", "sekundi", "sekundu"],
                minutes: vec!["minuta", "minute", "minutu"],
                hours: vec!["sat", "sata", "sati"],
                days: vec!["dan", "dana"],
                weeks: vec!["tjedan", "tjedna"],
                months: vec!["mjesec", "mjeseca", "mjeseci"],
                years: vec!["godina", "godine", "godinu"],
                special_cases: vec![],
            },
            Language::Hu => TimeagoPattern {
                word_separator: " ",
                // INFO: updated
                seconds: vec!["másodperce", "másodperccel"],
                minutes: vec!["perce", "perccel"],
                hours: vec!["órája", "órával"],
                days: vec!["napja", "nappal"],
                weeks: vec!["hete", "héttel"],
                months: vec!["hónapja", "hónappal"],
                years: vec!["éve", "évvel"],
                special_cases: vec![],
            },
            Language::Hy => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["վայրկյան"],
                minutes: vec!["րոպե"],
                hours: vec!["ժամ"],
                days: vec!["օր"],
                weeks: vec!["շաբաթ"],
                months: vec!["ամիս"],
                years: vec!["տարի"],
                special_cases: vec![],
            },
            Language::Id => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["detik"],
                minutes: vec!["menit"],
                hours: vec!["jam"],
                days: vec!["hari"],
                weeks: vec!["minggu"],
                months: vec!["bulan"],
                years: vec!["tahun"],
                special_cases: vec![],
            },
            Language::Is => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["sekúndu", "sekúndum"],
                minutes: vec!["mínútu", "mínútum"],
                hours: vec!["klukkustund", "klukkustundum"],
                days: vec!["degi", "dögum"],
                weeks: vec!["viku", "vikum"],
                months: vec!["mánuði", "mánuðum"],
                years: vec!["ári", "árum"],
                special_cases: vec![],
            },
            Language::It => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["secondi", "secondo"],
                minutes: vec!["minuti", "minuto"],
                hours: vec!["ora", "ore"],
                days: vec!["giorni", "giorno"],
                weeks: vec!["settimana", "settimane"],
                months: vec!["mese", "mesi"],
                years: vec!["anni", "anno"],
                special_cases: vec![],
            },
            Language::Iw => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["שניות", "שנייה"],
                minutes: vec!["דקה", "דקות"],
                hours: vec!["שעה", "שעות"],
                days: vec!["יום", "ימים"],
                weeks: vec!["שבוע", "שבועות"],
                months: vec!["חודש", "חודשים"],
                years: vec!["שנה", "שנים"],
                special_cases: vec![
                    ("שעתיים", 2 * 3600),
                    ("יומיים", 2 * 3600 * 24),
                    ("שבועיים", 2 * 3600 * 24 * 7),
                    ("חודשיים", 2 * 3600 * 24 * 30),
                    ("שנתיים", 2 * 3600 * 24 * 365),
                ],
            },
            Language::Ja => TimeagoPattern {
                word_separator: "",
                seconds: vec!["秒"],
                minutes: vec!["分"],
                hours: vec!["時間"],
                days: vec!["日"],
                weeks: vec!["週間"],
                months: vec!["か月"],
                years: vec!["年"],
                special_cases: vec![],
            },
            Language::Ka => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["წამის"],
                minutes: vec!["წუთის"],
                hours: vec!["საათის"],
                days: vec!["დღის"],
                weeks: vec!["კვირის"],
                months: vec!["თვის"],
                years: vec!["წლის"],
                special_cases: vec![],
            },
            Language::Kk => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["секунд"],
                minutes: vec!["минут"],
                hours: vec!["сағат"],
                days: vec!["күн"],
                weeks: vec!["апта"],
                months: vec!["ай"],
                years: vec!["жыл"],
                special_cases: vec![],
            },
            Language::Km => TimeagoPattern {
                word_separator: "",
                seconds: vec!["វិនាទីមុន"],
                minutes: vec!["នាទីមុន"],
                hours: vec!["ម៉ោងមុន"],
                days: vec!["ថ្ងៃមុន"],
                weeks: vec!["សប្ដាហ៍មុន"],
                months: vec!["ខែមុន"],
                years: vec!["ឆ្នាំមុន"],
                special_cases: vec![],
            },
            Language::Kn => TimeagoPattern {
                word_separator: " ",
                // INFO: fix hours
                seconds: vec!["ಸೆಕೆಂಡುಗಳ", "ಸೆಕೆಂಡ್"],
                minutes: vec!["ನಿಮಿಷಗಳ", "ನಿಮಿಷದ"],
                hours: vec!["ಗಂಟೆ", "ಗಂಟೆಗಳ", "ಗಂಟೆಯ"],
                days: vec!["ದಿನಗಳ", "ದಿನದ"],
                weeks: vec!["ವಾರಗಳ", "ವಾರದ"],
                months: vec!["ತಿಂಗಳ", "ತಿಂಗಳುಗಳ"],
                years: vec!["ವರ್ಷಗಳ", "ವರ್ಷದ"],
                special_cases: vec![],
            },
            Language::Ko => TimeagoPattern {
                word_separator: "",
                seconds: vec!["초"],
                minutes: vec!["분"],
                hours: vec!["시간"],
                days: vec!["일"],
                weeks: vec!["주"],
                months: vec!["개월"],
                years: vec!["년"],
                special_cases: vec![],
            },
            Language::Ky => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["секунд"],
                minutes: vec!["мүнөт"],
                hours: vec!["саат"],
                days: vec!["күн"],
                weeks: vec!["апта"],
                months: vec!["ай"],
                years: vec!["жыл"],
                special_cases: vec![],
            },
            Language::Lo => TimeagoPattern {
                word_separator: "",
                seconds: vec!["ວິນາທີກ່ອນ"],
                minutes: vec!["ນາທີກ່ອນ"],
                hours: vec!["ຊົ່ວໂມງກ່ອນ"],
                days: vec!["ມື້ກ່ອນ"],
                weeks: vec!["ອາທິດກ່ອນ"],
                months: vec!["ເດືອນກ່ອນ"],
                years: vec!["ປີກ່ອນ"],
                special_cases: vec![],
            },
            Language::Lt => TimeagoPattern {
                // INFO: fix weeks
                word_separator: " ",
                seconds: vec!["sekundes", "sekundę", "sekundžių"],
                minutes: vec!["minutes", "minutę", "minučių"],
                hours: vec!["valandas", "valandą", "valandų"],
                days: vec!["dienas", "dieną", "dienų"],
                weeks: vec!["savaites", "savaitę", "savaičių"],
                months: vec!["mėnesius", "mėnesių", "mėnesį"],
                years: vec!["metus", "metų"],
                special_cases: vec![],
            },
            Language::Lv => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["sekundes", "sekundēm"],
                minutes: vec!["minūtes", "minūtēm", "minūtes"],
                hours: vec!["stundas", "stundām"],
                days: vec!["dienas", "dienām"],
                weeks: vec!["nedēļas", "nedēļām"],
                months: vec!["mēneša", "mēnešiem"],
                years: vec!["gada", "gadiem"],
                special_cases: vec![],
            },
            Language::Mk => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["секунда", "секунди"],
                minutes: vec!["минута", "минути"],
                hours: vec!["час", "часа"],
                days: vec!["ден", "дена"],
                // INFO: fix weeks
                weeks: vec!["недела", "недели", "седмици"],
                months: vec!["месец", "месеци"],
                years: vec!["година", "години"],
                special_cases: vec![],
            },
            Language::Ml => TimeagoPattern {
                word_separator: "",
                seconds: vec!["സെക്കന്റ്", "സെക്കൻഡ്"],
                minutes: vec!["മിനിറ്റ്"],
                hours: vec!["മണിക്കൂർ"],
                days: vec!["ദിവസം"],
                // weeks: vec!["ആഴ്ച", "ആഴ്\u{200c}ച"],
                weeks: vec!["ആഴ്ച"],
                months: vec!["മാസം"],
                years: vec!["വർഷം"],
                special_cases: vec![],
            },
            Language::Mn => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["секундын"],
                minutes: vec!["минутын"],
                hours: vec!["цагийн"],
                days: vec!["өдрийн"],
                weeks: vec!["долоо", "хоногийн"],
                months: vec!["сарын"],
                years: vec!["жилийн"],
                special_cases: vec![],
            },
            Language::Mr => TimeagoPattern {
                word_separator: "",
                seconds: vec!["सेकंदांपूर्वी", "सेकंदापूर्वी"],
                minutes: vec!["मिनिटांपूर्वी", "मिनिटापूर्वी"],
                hours: vec!["तासांपूर्वी", "तासापूर्वी"],
                days: vec!["दिवसांपूर्वी", "दिवसापूर्वी"],
                weeks: vec!["आठवड्यांपूर्वी", "आठवड्यापूर्वी"],
                months: vec!["महिन्यांपूर्वी", "महिन्यापूर्वी"],
                years: vec!["वर्षांपूर्वी", "वर्षापूर्वी"],
                special_cases: vec![],
            },
            Language::Ms => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["saat"],
                minutes: vec!["minit"],
                hours: vec!["jam"],
                days: vec!["hari"],
                weeks: vec!["minggu"],
                months: vec!["bulan"],
                years: vec!["tahun"],
                special_cases: vec![],
            },
            Language::My => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["စက္ကန့်"],
                minutes: vec!["မိနစ်"],
                hours: vec!["နာရီ"],
                days: vec!["ရက်"],
                weeks: vec!["ပတ်"],
                months: vec!["လ"],
                years: vec!["နှစ်"],
                special_cases: vec![],
            },
            Language::Ne => TimeagoPattern {
                word_separator: " ",
                // INFO: fix hours
                seconds: vec!["सेकेन्ड"],
                minutes: vec!["मिनेट"],
                hours: vec!["घण्टा"],
                days: vec!["दिन"],
                weeks: vec!["हप्ता"],
                months: vec!["महिना"],
                years: vec!["वर्ष"],
                special_cases: vec![],
            },
            Language::Nl => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["seconde", "seconden"],
                minutes: vec!["minuten", "minuut"],
                hours: vec!["uur"],
                days: vec!["dag", "dagen"],
                weeks: vec!["week", "weken"],
                months: vec!["maand", "maanden"],
                years: vec!["jaar"],
                special_cases: vec![],
            },
            Language::No => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["sekund", "sekunder"],
                minutes: vec!["minutt", "minutter"],
                hours: vec!["time", "timer"],
                days: vec!["dag", "dager", "døgn"],
                weeks: vec!["uke", "uker"],
                // INFO: fixed months, days
                months: vec!["måned", "måneder"],
                years: vec!["år"],
                special_cases: vec![],
            },
            // INFO: newly added
            Language::Or => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["ସେକେଣ୍ଡ"],
                minutes: vec!["ମିନିଟ୍"],
                hours: vec!["ଘଣ୍ଟା"],
                days: vec!["ଦିନ"],
                weeks: vec!["ସପ୍ତାହ"],
                months: vec!["ମାସ"],
                years: vec!["ବର୍ଷ"],
                special_cases: vec![],
            },
            Language::Pa => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["ਸਕਿੰਟ"],
                minutes: vec!["ਮਿੰਟ"],
                hours: vec!["ਘੰਟਾ", "ਘੰਟੇ"],
                days: vec!["ਦਿਨ"],
                weeks: vec!["ਹਫ਼ਤਾ", "ਹਫ਼ਤੇ"],
                months: vec!["ਮਹੀਨਾ", "ਮਹੀਨੇ"],
                years: vec!["ਸਾਲ"],
                special_cases: vec![],
            },
            Language::Pl => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["sekund", "sekundy", "sekundę"],
                minutes: vec!["minut", "minuty", "minutę"],
                hours: vec!["godzin", "godziny", "godzinę"],
                days: vec!["dni", "dzień"],
                weeks: vec!["tydzień", "tygodnie"],
                months: vec!["miesiąc", "miesiące", "miesięcy"],
                years: vec!["lat", "lata", "rok"],
                special_cases: vec![],
            },
            Language::Pt | Language::PtPt => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["segundo", "segundos"],
                minutes: vec!["minuto", "minutos"],
                hours: vec!["hora", "horas"],
                days: vec!["dia", "dias"],
                weeks: vec!["semana", "semanas"],
                months: vec!["meses", "mês"],
                years: vec!["ano", "anos"],
                special_cases: vec![],
            },
            Language::Ro => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["secunde", "secundă"],
                minutes: vec!["minut", "minute"],
                hours: vec!["ore", "oră"],
                days: vec!["zi", "zile"],
                weeks: vec!["săptămâni", "săptămână"],
                months: vec!["luni", "lună"],
                years: vec!["an", "ani"],
                special_cases: vec![],
            },
            Language::Ru => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["секунд", "секунду", "секунды", "только что"],
                minutes: vec!["минут", "минуту", "минуты"],
                hours: vec!["час", "часа", "часов"],
                days: vec!["день", "дней", "дня"],
                weeks: vec!["Неделю", "недели"],
                months: vec!["месяц", "месяца", "месяцев"],
                years: vec!["Год", "года", "лет"],
                special_cases: vec![],
            },
            Language::Si => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["තත්පර"],
                minutes: vec!["මිනිත්තු"],
                hours: vec!["පැය"],
                days: vec!["දින"],
                weeks: vec!["සති"],
                months: vec!["මාස"],
                years: vec!["වසර"],
                special_cases: vec![],
            },
            Language::Sk => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["sekundami", "sekundou"],
                minutes: vec!["minútami", "minútou"],
                hours: vec!["hodinami", "hodinou"],
                days: vec!["dňami", "dňom"],
                weeks: vec!["týždňami", "týždňom"],
                months: vec!["mesiacmi", "mesiacom"],
                years: vec!["rokmi", "rokom"],
                special_cases: vec![],
            },
            Language::Sl => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["sekundama", "sekundami", "sekundo"],
                minutes: vec!["minutama", "minutami", "minuto"],
                hours: vec!["urama", "urami", "uro"],
                days: vec!["dnem", "dnevi", "dnevoma"],
                weeks: vec!["tedni", "tednom", "tednoma"],
                months: vec!["mesecem", "mesecema", "meseci"],
                years: vec!["leti", "letom", "letoma"],
                special_cases: vec![],
            },
            Language::Sq => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["sekonda", "sekondë"],
                minutes: vec!["minuta", "minutë"],
                hours: vec!["orë"],
                days: vec!["ditë"],
                weeks: vec!["javë"],
                months: vec!["muaj"],
                years: vec!["vit", "vjet"],
                special_cases: vec![],
            },
            Language::Sr => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["секунде", "секунди"],
                minutes: vec!["минута"],
                hours: vec!["сат", "сата", "сати"],
                // INFO: simplified days
                days: vec!["дан", "дана"],
                weeks: vec!["недеље", "недељу"],
                months: vec!["месец", "месеца", "месеци"],
                years: vec!["година", "године", "годину"],
                special_cases: vec![],
            },
            Language::SrLatn => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["sekunde", "sekundi"],
                minutes: vec!["minuta"],
                hours: vec!["sat", "sati", "sata"],
                // INFO: simplified days
                days: vec!["dan", "dana"],
                weeks: vec!["nedelja", "nedelje", "nedelju"],
                months: vec!["mesec", "meseci", "meseca"],
                years: vec!["godine", "godina", "godinu"],
                special_cases: vec![],
            },
            Language::Sv => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["sekund", "sekunder"],
                minutes: vec!["minut", "minuter"],
                hours: vec!["timmar", "timme"],
                days: vec!["dag", "dagar"],
                weeks: vec!["vecka", "veckor"],
                months: vec!["månad", "månader"],
                years: vec!["år"],
                special_cases: vec![],
            },
            Language::Sw => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["sekunde"],
                minutes: vec!["dakika"],
                hours: vec!["saa"],
                days: vec!["siku"],
                weeks: vec!["wiki"],
                months: vec!["Mwezi", "miezi"],
                years: vec!["Miaka", "Mwaka"],
                special_cases: vec![],
            },
            Language::Ta => TimeagoPattern {
                word_separator: " ",
                // INFO: fixed minutes hours months, TODO: 1 second
                //  2 விநாடிகளுக்கு முன்
                seconds: vec!["வினாடி", "வினாடிகளுக்கு"],
                // 1 நிமிடத்திற்கு முன் 2 நிமிடங்களுக்கு முன்
                minutes: vec!["நிமிடங்களுக்கு", "நிமிடத்திற்கு", "நிமிடங்கள்", "நிமிடம்"],
                hours: vec!["மணிநேரம்"],
                days: vec!["நாட்களுக்கு", "நாளுக்கு"],
                weeks: vec!["வாரங்களுக்கு", "வாரம்"],
                months: vec!["மாதத்துக்கு", "மாதங்களுக்கு"],
                years: vec!["ஆண்டிற்கு", "ஆண்டுகளுக்கு"],
                special_cases: vec![],
            },
            Language::Te => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["సెకను", "సెకన్ల"],
                minutes: vec!["నిమిషం", "నిమిషాల"],
                hours: vec!["గంట", "గంటల"],
                days: vec!["రోజు", "రోజుల"],
                weeks: vec!["వారం", "వారాల"],
                months: vec!["నెల", "నెలల"],
                years: vec!["సంవత్సరం", "సంవత్సరాల"],
                special_cases: vec![],
            },
            Language::Th => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["วินาทีที่ผ่านมา"],
                minutes: vec!["นาทีที่ผ่านมา"],
                hours: vec!["ชั่วโมงที่ผ่านมา"],
                days: vec!["วันที่ผ่านมา"],
                weeks: vec!["สัปดาห์ที่ผ่านมา"],
                months: vec!["เดือนที่ผ่านมา"],
                // INFO: fixed years
                years: vec!["ปีที่แล้ว"],
                special_cases: vec![],
            },
            Language::Tr => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["saniye"],
                minutes: vec!["dakika"],
                hours: vec!["saat"],
                days: vec!["gün"],
                weeks: vec!["hafta"],
                months: vec!["ay"],
                years: vec!["yıl"],
                special_cases: vec![],
            },
            Language::Uk => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["секунд", "секунди", "секунду"],
                minutes: vec!["хвилин", "хвилини", "хвилину"],
                hours: vec!["годин", "години", "годину"],
                days: vec!["день", "дні", "днів"],
                weeks: vec!["тиждень", "тижні"],
                months: vec!["місяць", "місяці", "місяців"],
                years: vec!["роки", "років", "рік"],
                special_cases: vec![],
            },
            Language::Ur => TimeagoPattern {
                word_separator: " ",
                // INFO: fix days, months
                seconds: vec!["سیکنڈ", "سیکنڈز"],
                minutes: vec!["منٹ", "منٹس"],
                hours: vec!["گھنٹہ", "گھنٹے"],
                days: vec!["دن", "دنوں"],
                weeks: vec!["ہفتہ", "ہفتے"],
                months: vec!["مہینہ", "مہینے"],
                years: vec!["سال"],
                special_cases: vec![],
            },
            Language::Uz => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["soniya"],
                minutes: vec!["daqiqa"],
                hours: vec!["soat"],
                days: vec!["kun"],
                weeks: vec!["hafta"],
                months: vec!["oy"],
                years: vec!["yil"],
                special_cases: vec![],
            },
            Language::Vi => TimeagoPattern {
                word_separator: " ",
                seconds: vec!["giây"],
                minutes: vec!["phút"],
                hours: vec!["giờ", "tiếng"],
                days: vec!["ngày"],
                weeks: vec!["tuần"],
                months: vec!["tháng"],
                years: vec!["năm"],
                special_cases: vec![],
            },
            Language::ZhCn => TimeagoPattern {
                // INFO: remove 'ago' character
                word_separator: "",
                seconds: vec!["秒"],
                minutes: vec!["分钟"],
                hours: vec!["小时"],
                days: vec!["天"],
                weeks: vec!["周"],
                months: vec!["个月"],
                years: vec!["年"],
                special_cases: vec![],
            },
            Language::ZhHk => TimeagoPattern {
                // INFO: fix days, remove 'ago' character
                word_separator: "",
                seconds: vec!["秒"],
                minutes: vec!["分鐘"],
                hours: vec!["小時"],
                days: vec!["日"],
                weeks: vec!["星期"],
                months: vec!["個月"],
                years: vec!["年"],
                special_cases: vec![],
            },
            Language::ZhTw => TimeagoPattern {
                // INFO: fix days, remove 'ago' character
                word_separator: "",
                seconds: vec!["秒"],
                minutes: vec!["分鐘"],
                hours: vec!["小時"],
                days: vec!["天"],
                weeks: vec!["週"],
                months: vec!["個月"],
                years: vec!["年"],
                special_cases: vec![],
            },
            Language::Zu => TimeagoPattern {
                word_separator: " ",
                // INFO: fix hours, days
                seconds: vec!["amasekhondi", "isekhondi"],
                minutes: vec!["amaminithi", "iminithi"],
                hours: vec!["emahoreni", "amahora", "ihora"],
                days: vec!["ezinsukwini", "izinsuku", "usuku"],
                weeks: vec!["amaviki", "iviki"],
                months: vec!["inyanga", "izinyanga"],
                years: vec!["iminyaka", "unyaka"],
                special_cases: vec![],
            },
        }
    }
}

impl TryFrom<&str> for TimeagoPattern<'_> {
    type Error = serde_json::Error;

    fn try_from(s: &str) -> Result<Self, Self::Error> {
        Language::from_str(s).map(|l| Self::from(l))
    }
}

impl TimeagoPattern<'_> {
    pub fn parse(&self, textual_date: &str) -> Option<u64> {
        self.special_cases
            .iter()
            .find_map(|case| {
                if self.textual_date_matches(textual_date, case.0) {
                    Some(case.1)
                } else {
                    None
                }
            })
            .or_else(|| match self.parse_time_unit(textual_date) {
                Some(tu) => Some(util::parse_numeric::<u64>(textual_date).unwrap_or(1) * tu),
                None => None,
            })
    }

    fn parse_time_unit(&self, textual_date: &str) -> Option<u64> {
        match self.is_time_unit(textual_date, &self.seconds) {
            true => Some(1),
            false => match self.is_time_unit(textual_date, &self.minutes) {
                true => Some(60),
                false => match self.is_time_unit(textual_date, &self.hours) {
                    true => Some(3600),
                    false => match self.is_time_unit(textual_date, &self.days) {
                        true => Some(24 * 3600),
                        false => match self.is_time_unit(textual_date, &self.weeks) {
                            true => Some(7 * 24 * 3600),
                            false => match self.is_time_unit(textual_date, &self.months) {
                                true => Some(30 * 24 * 3600),
                                false => match self.is_time_unit(textual_date, &self.years) {
                                    true => Some(365 * 24 * 3600),
                                    false => None,
                                },
                            },
                        },
                    },
                },
            },
        }
    }

    fn is_time_unit(&self, textual_date: &str, phrases: &Vec<&str>) -> bool {
        phrases
            .iter()
            .any(|p| self.textual_date_matches(textual_date, p))
    }

    fn textual_date_matches(&self, textual_date: &str, ago_phrase: &str) -> bool {
        if textual_date == ago_phrase {
            return true;
        }

        let text_lower = textual_date.to_lowercase().replace('\u{200b}', "");
        let ago_lower = ago_phrase.to_lowercase();

        if self.word_separator.is_empty() {
            return text_lower.contains(&ago_lower);
        }

        let escaped_phrase = fancy_regex::escape(&ago_lower);
        let escaped_separator = match self.word_separator {
            " " => Cow::Borrowed("[ \\t\\xA0\\u1680\\u180e\\u2000-\\u200a\\u202f\\u205f\\u3000]"),
            _ => fancy_regex::escape(self.word_separator),
        };

        let pattern = format!(
            "(^|{}){}($|{})",
            escaped_separator, escaped_phrase, escaped_separator
        );

        ok_or_bail!(Regex::new(&pattern), false)
            .is_match(&text_lower)
            .unwrap_or_default()
    }
}

#[cfg(test)]
mod tests {
    use std::{collections::BTreeMap, fs::File, io::BufReader, path::Path};

    use rstest::rstest;

    use super::*;

    #[rstest]
    #[case(Language::De, "vor 1 Sekunde", Some(1))]
    #[case(Language::Ar, "قبل ساعة واحدة", Some(3600))]
    fn t_parse(#[case] lang: Language, #[case] textual_date: &str, #[case] expect: Option<u64>) {
        let pat = TimeagoPattern::try_from(lang).unwrap();
        let secs_ago = pat.parse(textual_date);
        assert_eq!(secs_ago, expect);
    }

    #[test]
    fn t_testfile() {
        let json_path = Path::new("testfiles/date/timeago.json");

        let expect = [
            10 * 60,
            20 * 60,
            1 * 3600,
            2 * 3600,
            7 * 3600,
            8 * 3600,
            9 * 3600,
            10 * 3600,
            11 * 3600,
            12 * 3600,
            13 * 3600,
            14 * 3600,
            15 * 3600,
            3 * 3600,
            4 * 3600,
            4 * 3600,
            5 * 3600,
            6 * 3600,
            6 * 3600,
            20 * 3600,
            2 * 3600 * 24,
            3 * 3600 * 24,
            5 * 3600 * 24,
            6 * 3600 * 24,
            8 * 3600 * 24,
            10 * 3600 * 24,
            12 * 3600 * 24,
            2 * 3600 * 24 * 7,
            3 * 3600 * 24 * 7,
            4 * 3600 * 24 * 7,
            1 * 3600 * 24 * 30,
            8 * 3600 * 24 * 30,
            11 * 3600 * 24 * 30,
            1 * 3600 * 24 * 365,
            2 * 3600 * 24 * 365,
            3 * 3600 * 24 * 365,
            4 * 3600 * 24 * 365,
        ];

        let json_file = File::open(json_path).unwrap();
        let strings_map: BTreeMap<String, Vec<String>> =
            serde_json::from_reader(BufReader::new(json_file)).unwrap();

        strings_map.iter().for_each(|(lang, strings)| {
            let pat = TimeagoPattern::try_from(lang.as_str()).unwrap();

            assert_eq!(strings.len(), expect.len());
            strings.iter().enumerate().for_each(|(n, s)| {
                assert_eq!(
                    pat.parse(s),
                    Some(expect[n]),
                    "Language: {}, n: {}",
                    lang,
                    n
                );
            });
        })
    }
}