// available langs

export type LanguageItem = {
	cr_locale?: string;
	hd_locale?: string;
	adn_locale?: string;
	new_hd_locale?: string;
	locale: string;
	code: string;
	name: string;
	language?: string;
};

const languages: LanguageItem[] = [
	{ locale: 'un', code: 'und', name: 'Undetermined', language: 'Undetermined', new_hd_locale: 'und', cr_locale: 'und', adn_locale: 'und' },
	{ cr_locale: 'en-US', new_hd_locale: 'en-US', hd_locale: 'English', locale: 'en', code: 'eng', name: 'English' },
	{ cr_locale: 'en-IN', locale: 'en-IN', code: 'eng', name: 'English (India)' },
	{ cr_locale: 'es-LA', new_hd_locale: 'es-MX', hd_locale: 'Spanish LatAm', locale: 'es-419', code: 'spa', name: 'Spanish', language: 'Latin American Spanish' },
	{ cr_locale: 'es-419', hd_locale: 'Spanish', locale: 'es-419', code: 'spa-419', name: 'Spanish', language: 'Latin American Spanish' },
	{ cr_locale: 'es-ES', new_hd_locale: 'es-ES', hd_locale: 'Spanish Europe', locale: 'es-ES', code: 'spa-ES', name: 'Castilian', language: 'European Spanish' },
	{ cr_locale: 'pt-BR', new_hd_locale: 'pt-BR', hd_locale: 'Portuguese', locale: 'pt-BR', code: 'por', name: 'Portuguese', language: 'Brazilian Portuguese' },
	{ cr_locale: 'pt-PT', locale: 'pt-PT', code: 'por', name: 'Portuguese (Portugal)', language: 'Portugues (Portugal)' },
	{ cr_locale: 'fr-FR', adn_locale: 'fr', hd_locale: 'French', locale: 'fr', code: 'fra', name: 'French' },
	{ cr_locale: 'de-DE', adn_locale: 'de', hd_locale: 'German', locale: 'de', code: 'deu', name: 'German' },
	{ cr_locale: 'ar-ME', locale: 'ar', code: 'ara-ME', name: 'Arabic' },
	{ cr_locale: 'ar-SA', hd_locale: 'Arabic', locale: 'ar', code: 'ara', name: 'Arabic (Saudi Arabia)' },
	{ cr_locale: 'it-IT', hd_locale: 'Italian', locale: 'it', code: 'ita', name: 'Italian' },
	{ cr_locale: 'ru-RU', hd_locale: 'Russian', locale: 'ru', code: 'rus', name: 'Russian' },
	{ cr_locale: 'tr-TR', hd_locale: 'Turkish', locale: 'tr', code: 'tur', name: 'Turkish' },
	{ cr_locale: 'hi-IN', locale: 'hi', code: 'hin', name: 'Hindi' },
	{ locale: 'zh', code: 'cmn', name: 'Chinese (Mandarin, PRC)' },
	{ cr_locale: 'zh-CN', locale: 'zh-CN', code: 'zho', name: 'Chinese (Mainland China)' },
	{ cr_locale: 'zh-TW', locale: 'zh-TW', code: 'chi', name: 'Chinese (Taiwan)' },
	{ cr_locale: 'zh-HK', locale: 'zh-HK', code: 'zh-HK', name: 'Chinese (Hong-Kong)', language: '中文 (粵語)' },
	{ cr_locale: 'ko-KR', hd_locale: 'Korean', locale: 'ko', code: 'kor', name: 'Korean' },
	{ cr_locale: 'ca-ES', locale: 'ca-ES', code: 'cat', name: 'Catalan' },
	{ cr_locale: 'pl-PL', locale: 'pl-PL', code: 'pol', name: 'Polish' },
	{ cr_locale: 'th-TH', locale: 'th-TH', code: 'tha', name: 'Thai', language: 'ไทย' },
	{ cr_locale: 'ta-IN', locale: 'ta-IN', code: 'tam', name: 'Tamil (India)', language: 'தமிழ்' },
	{ cr_locale: 'ms-MY', locale: 'ms-MY', code: 'may', name: 'Malay (Malaysia)', language: 'Bahasa Melayu' },
	{ cr_locale: 'vi-VN', locale: 'vi-VN', code: 'vie', name: 'Vietnamese', language: 'Tiếng Việt' },
	{ cr_locale: 'id-ID', locale: 'id-ID', code: 'ind', name: 'Indonesian', language: 'Bahasa Indonesia' },
	{ cr_locale: 'te-IN', locale: 'te-IN', code: 'tel', name: 'Telugu (India)', language: 'తెలుగు' },
	{ cr_locale: 'ja-JP', adn_locale: 'ja', hd_locale: 'Japanese', locale: 'ja', code: 'jpn', name: 'Japanese' }
];

// add en language names
(() => {
	for (const languageIndex in languages) {
		if (!languages[languageIndex].language) {
			languages[languageIndex].language = languages[languageIndex].name;
		}
	}
})();

// construct dub language codes
const dubLanguageCodes = (() => {
	const dubLanguageCodesArray: string[] = [];
	for (const language of languages) {
		dubLanguageCodesArray.push(language.code);
	}
	return [...new Set(dubLanguageCodesArray)];
})();

// construct subtitle languages filter
const subtitleLanguagesFilter = (() => {
	const subtitleLanguagesExtraParameters = ['all', 'none'];
	return [
		...subtitleLanguagesExtraParameters,
		...new Set(
			languages.map((l) => {
				return l.locale;
			})
		)
	];
})();

const searchLocales = (() => {
	return [
		'',
		...new Set(
			languages
				.map((l) => {
					return l.cr_locale;
				})
				.slice(0, -1)
		),
		...new Set(
			languages
				.map((l) => {
					return l.adn_locale;
				})
				.slice(0, -1)
		)
	];
})();

// convert
const fixLanguageTag = (tag: string) => {
	tag = typeof tag == 'string' ? tag : 'und';
	const tagLangLC = tag.match(/^(\w{2})-?(\w{2})$/);
	if (tagLangLC) {
		const tagLang = `${tagLangLC[1]}-${tagLangLC[2].toUpperCase()}`;
		if (findLang(tagLang).cr_locale != 'und') {
			return findLang(tagLang).cr_locale;
		} else {
			return tagLang;
		}
	} else {
		return tag;
	}
};

// find lang by cr_locale
const findLang = (cr_locale: string) => {
	const lang = languages.find((l) => {
		return l.cr_locale == cr_locale;
	});
	return lang ? lang : languages.find((l) => l.code === 'und') || { cr_locale: 'und', locale: 'un', code: 'und', name: 'Undetermined', language: 'Undetermined' };
};

const fixAndFindCrLC = (cr_locale: string) => {
	const str = fixLanguageTag(cr_locale);
	return findLang(str || '');
};

// rss subs lang parser
const parseRssSubtitlesString = (subs: string) => {
	const splitMap = subs
		.replace(/\s/g, '')
		.split(',')
		.map((s) => {
			return fixAndFindCrLC(s).locale;
		});
	const sort = sortTags(splitMap);
	return sort.join(', ');
};

// parse subtitles Array
const parseSubtitlesArray = (tags: string[]) => {
	const sort = sortSubtitles(
		tags.map((t) => {
			return { locale: fixAndFindCrLC(t).locale };
		})
	);
	return sort
		.map((t) => {
			return t.locale;
		})
		.join(', ');
};

// sort subtitles
const sortSubtitles = <
	T extends {
		[key: string]: unknown;
	} = Record<string, string>
>(
	data: T[],
	sortkey?: keyof T
): T[] => {
	const idx: Record<string, number> = {};
	const key = sortkey || ('locale' as keyof T);
	const tags = [...new Set(Object.values(languages).map((e) => e.locale))];
	for (const l of tags) {
		idx[l] = Object.keys(idx).length + 1;
	}
	data.sort((a, b) => {
		const ia = idx[a[key] as string] ? idx[a[key] as string] : 50;
		const ib = idx[b[key] as string] ? idx[b[key] as string] : 50;
		return ia - ib;
	});
	return data;
};

const sortTags = (data: string[]) => {
	const retData = data.map((e) => {
		return { locale: e };
	});
	const sort = sortSubtitles(retData);
	return sort.map((e) => e.locale as string);
};

const subsFile = (fnOutput: string, subsIndex: string, langItem: LanguageItem, isCC: boolean, ccTag: string, isSigns?: boolean, format?: string) => {
	subsIndex = (parseInt(subsIndex) + 1).toString().padStart(2, '0');
	return `${fnOutput}.${subsIndex}.${langItem.code}.${langItem.language}${isCC ? `.${ccTag}` : ''}${isSigns ? '.signs' : ''}.${format ? format : 'ass'}`;
};

// construct dub langs const
const dubLanguages = (() => {
	const dubDb: Record<string, string> = {};
	for (const lang of languages) {
		if (!Object.keys(dubDb).includes(lang.name)) {
			dubDb[lang.name] = lang.code;
		}
	}
	return dubDb;
})();

// dub regex
const dubRegExpStr = `\\((${Object.keys(dubLanguages).join('|')})(?: (Dub|VO))?\\)$`;
const dubRegExp = new RegExp(dubRegExpStr);

// code to lang name
const langCode2name = (code: string) => {
	const codeIdx = dubLanguageCodes.indexOf(code);
	return Object.keys(dubLanguages)[codeIdx];
};

// locale to lang name
const locale2language = (locale: string) => {
	const filteredLocale = languages.filter((l) => {
		return l.locale == locale;
	});
	return filteredLocale[0];
};

// output
export {
	languages,
	dubLanguageCodes,
	dubLanguages,
	langCode2name,
	locale2language,
	dubRegExp,
	subtitleLanguagesFilter,
	searchLocales,
	fixLanguageTag,
	findLang,
	fixAndFindCrLC,
	parseRssSubtitlesString,
	parseSubtitlesArray,
	sortSubtitles,
	sortTags,
	subsFile
};