import { getCurrency } from "@visulima/iso-locale";

// BCP 47 format
getCurrency("en-US"); // "USD"
getCurrency("pt-BR"); // "BRL"
getCurrency("zh-Hant-TW"); // "TWD"

// Underscore format
getCurrency("en_US"); // "USD"
getCurrency("pt_BR"); // "BRL"

// Direct country code
getCurrency("US"); // "USD"
getCurrency("GB"); // "GBP"

import { parseBCP47Tag } from "@visulima/iso-locale";

const parsed = parseBCP47Tag("en-US");
console.log(parsed);
// { language: "en", country: "US" }

const parsed2 = parseBCP47Tag("zh-Hant-TW");
console.log(parsed2);
// { language: "zh", script: "Hant", country: "TW" }

import { generateBCP47Tag } from "@visulima/iso-locale";

generateBCP47Tag("en", "US"); // "en-US"
generateBCP47Tag("fr", "FR"); // "fr-FR"
generateBCP47Tag("zh", "TW", "Hant"); // "zh-Hant-TW"

import { getBCP47Tags } from "@visulima/iso-locale";

// Single language country
getBCP47Tags("US"); // ["en-US"]

// Multi-language country
getBCP47Tags("CA"); // ["en-CA", "fr-CA"]
getBCP47Tags("CH"); // ["de-CH", "fr-CH", "it-CH", "rm-CH"]

import { isValidBCP47Tag } from "@visulima/iso-locale";

isValidBCP47Tag("en-US"); // true
isValidBCP47Tag("zh-Hant-TW"); // true
isValidBCP47Tag("invalid"); // false

import { iso6393To6391, convert6393To6391 } from "@visulima/iso-locale";

// Single conversion
iso6393To6391("eng"); // "en"
iso6393To6391("fra"); // "fr"
iso6393To6391("spa"); // "es"

// Array conversion
convert6393To6391(["eng", "fra", "spa"]); // ["en", "fr", "es"]

import { getLocales } from "@visulima/iso-locale";

getLocales("EUR"); // ["FR", "DE", "ES", "IT", ...]
getLocales("USD"); // ["US", ...]

import { getCurrency, getSymbol, getByCode } from "@visulima/iso-locale";

function formatCurrencyByLocale(amount: number, locale: string): string {
    const currencyCode = getCurrency(locale);
    if (!currencyCode) return `${amount}`;

    const currency = getByCode(currencyCode);
    const symbol = getSymbol(currencyCode);
    const decimals = currency?.decimals ?? 2;

    return `${symbol}${amount.toFixed(decimals)}`;
}

formatCurrencyByLocale(100, "en-US"); // "$100.00"
formatCurrencyByLocale(100, "en-GB"); // "£100.00"
formatCurrencyByLocale(100, "fr-FR"); // "€100.00"

import { getBCP47Tags, getByAlpha2 } from "@visulima/iso-locale";

function getLocaleOptions(countryCode: string) {
    const tags = getBCP47Tags(countryCode);
    const country = getByAlpha2(countryCode);

    return tags.map((tag) => ({
        value: tag,
        label: `${tag} - ${country?.name}`,
    }));
}

getLocaleOptions("CA");
// [
//   { value: "en-CA", label: "en-CA - Canada" },
//   { value: "fr-CA", label: "fr-CA - Canada" }
// ]

import { parseBCP47Tag, getCurrency } from "@visulima/iso-locale";

function parseUserLocale(locale: string) {
    const parsed = parseBCP47Tag(locale);
    if (!parsed) {
        throw new Error(`Invalid locale: ${locale}`);
    }

    return {
        language: parsed.language,
        country: parsed.country,
        script: parsed.script,
        currency: parsed.country ? getCurrency(locale) : undefined,
    };
}

parseUserLocale("en-US");
// { language: "en", country: "US", currency: "USD" }