/**
 * Utilitários de rotas e navegação internacionalizada.
 * Módulo puro (sem 'use client') seguro para Server e Client Components.
 */

// Ponto único de configuração de idiomas ATIVOS.
// Para ativar um novo idioma no site, basta adicionar seu código aqui (ex.: ["pt", "en"]).
export const ENABLED_LOCALES = ["pt", "en"];

export const ALL_LOCALES = [
	{ code: "pt", label: "Português", short: "PT", lang: "pt-BR", og: "pt_BR" },
	{ code: "en", label: "English", short: "EN", lang: "en", og: "en_US" },
	{ code: "es", label: "Español", short: "ES", lang: "es-419", og: "es_419" },
	{ code: "fr", label: "Français", short: "FR", lang: "fr", og: "fr_FR" },
	{ code: "de", label: "Deutsch", short: "DE", lang: "de", og: "de_DE" },
	{ code: "zh-CN", label: "简体中文", short: "中", lang: "zh-CN", og: "zh_CN" },
];

export const ALL_LOCALE_CODES = ALL_LOCALES.map((l) => l.code);

export const LOCALES = ALL_LOCALES.filter((l) => ENABLED_LOCALES.includes(l.code));

export const CANONICAL_ROUTES = [
	{
		id: "series_item",
		match: /^(?:\/(?:pt|en|es|fr|de|zh-CN))?\/(?:series|serien)\/([^/?#]+)/,
		getSlug: (loc, key) => (loc === "de" ? `/serien/${key}` : `/series/${key}`),
	},
	{
		id: "frameworks_item",
		match: /^(?:\/(?:pt|en|es|fr|de|zh-CN))?\/frameworks\/([^/?#]+)/,
		getSlug: (loc, key) => `/frameworks/${key}`,
	},
	{
		id: "series",
		match: /^(?:\/(?:pt|en|es|fr|de|zh-CN))?\/(?:series|serien)(?:\/|$)/,
		getSlug: (loc) => (loc === "de" ? "/serien" : "/series"),
	},
	{
		id: "catalogo",
		match: /^(?:\/(?:pt|en|es|fr|de|zh-CN))?\/(?:catalogo|catalog|catalogue|katalog)(?:\/|$)/,
		getSlug: (loc) => {
			if (loc === "de") return "/katalog";
			if (loc === "fr") return "/catalogue";
			if (loc === "en" || loc === "zh-CN") return "/catalog";
			return "/catalogo";
		},
	},
	{
		id: "comparacao",
		match: /^(?:\/(?:pt|en|es|fr|de|zh-CN))?\/(?:comparacao|compare|comparacion|comparaison|vergleich)(?:\/|$)/,
		getSlug: (loc) => {
			if (loc === "en" || loc === "zh-CN") return "/compare";
			if (loc === "es") return "/comparacion";
			if (loc === "fr") return "/comparaison";
			if (loc === "de") return "/vergleich";
			return "/comparacao";
		},
	},
	{
		id: "componentes",
		match: /^(?:\/(?:pt|en|es|fr|de|zh-CN))?\/(?:componentes|components|composants|komponenten)(?:\/|$)/,
		getSlug: (loc) => {
			if (loc === "en" || loc === "zh-CN") return "/components";
			if (loc === "fr") return "/composants";
			if (loc === "de") return "/komponenten";
			return "/componentes";
		},
	},
	{
		id: "diagnostico",
		match: /^(?:\/(?:pt|en|es|fr|de|zh-CN))?\/(?:diagnostico|diagnostics|diagnostic|diagnose)(?:\/|$)/,
		getSlug: (loc) => {
			if (loc === "en" || loc === "zh-CN") return "/diagnostics";
			if (loc === "fr") return "/diagnostic";
			if (loc === "de") return "/diagnose";
			return "/diagnostico";
		},
	},
	{
		id: "frameworks",
		match: /^(?:\/(?:pt|en|es|fr|de|zh-CN))?\/frameworks(?:\/|$)/,
		getSlug: () => "/frameworks",
	},
	{
		id: "glossario",
		match: /^(?:\/(?:pt|en|es|fr|de|zh-CN))?\/(?:glossario|glossary|glosario|glossaire|glossar)(?:\/|$)/,
		getSlug: (loc) => {
			if (loc === "en" || loc === "zh-CN") return "/glossary";
			if (loc === "es") return "/glosario";
			if (loc === "fr") return "/glossaire";
			if (loc === "de") return "/glossar";
			return "/glossario";
		},
	},
	{
		id: "seletor",
		match: /^(?:\/(?:pt|en|es|fr|de|zh-CN))?\/(?:seletor|selector|selecteur|auswahl)(?:\/|$)/,
		getSlug: (loc) => {
			if (loc === "en" || loc === "es" || loc === "zh-CN") return "/selector";
			if (loc === "fr") return "/selecteur";
			if (loc === "de") return "/auswahl";
			return "/seletor";
		},
	},
	{
		id: "sobre",
		match: /^(?:\/(?:pt|en|es|fr|de|zh-CN))?\/(?:sobre|about|acerca|a-propos|ueber-uns)(?:\/|$)/,
		getSlug: (loc) => {
			if (loc === "en" || loc === "zh-CN") return "/about";
			if (loc === "es") return "/acerca";
			if (loc === "fr") return "/a-propos";
			if (loc === "de") return "/ueber-uns";
			return "/sobre";
		},
	},
	{
		id: "livro",
		match: /^(?:\/(?:pt|en|es|fr|de|zh-CN))?\/livro(?:\/|$)/,
		getSlug: (loc) => (loc === "pt" ? "/livro" : ""),
	},
];

export function getLocalizedHref(pathname, targetLocale) {
	if (!pathname || pathname === "/") {
		return `/${targetLocale}`;
	}

	const [cleanPath, ...queryParts] = pathname.split("?");
	const query = queryParts.length > 0 ? `?${queryParts.join("?")}` : "";

	for (const loc of ALL_LOCALE_CODES) {
		if (cleanPath === `/${loc}` || cleanPath === `/${loc}/`) {
			return `/${targetLocale}${query}`;
		}
	}

	for (const route of CANONICAL_ROUTES) {
		const m = cleanPath.match(route.match);
		if (m) {
			const slug = route.getSlug(targetLocale, m[1]);
			return slug ? `/${targetLocale}${slug}${query}` : `/${targetLocale}${query}`;
		}
	}

	return `/${targetLocale}${query}`;
}

export function getPtPath(pathname) {
	return getLocalizedHref(pathname, "pt");
}