import { clsx, type ClassValue } from "clsx";
import { twMerge } from "tailwind-merge";

export function cn(...inputs: ClassValue[]) {
  return twMerge(clsx(inputs));
}

export function formatPrice(price: number, locale: string): string {
  if (locale === "fa") {
    return new Intl.NumberFormat("fa-IR").format(price) + " تومان";
  }
  return new Intl.NumberFormat("en-US").format(price) + " ﷼";
}

export function formatRating(rating: number): string {
  return rating.toFixed(1);
}

// Convert Persian/Arabic digits to Latin
export function toLatinDigits(str: string): string {
  return str
    .replace(/[۰-۹]/g, (d) => String(d.charCodeAt(0) - 0x06f0))
    .replace(/[٠-٩]/g, (d) => String(d.charCodeAt(0) - 0x0660));
}

// Slugify a Persian or Latin string for URLs
export function slugify(str: string): string {
  return toLatinDigits(str)
    .toLowerCase()
    .trim()
    .replace(/[\s_]+/g, "-")
    .replace(/[^a-z0-9؀-ۿ-]/g, "")
    .replace(/-+/g, "-");
}

const DAY_KEYS_FA: Record<string, string> = {
  sat: "شنبه",
  sun: "یکشنبه",
  mon: "دوشنبه",
  tue: "سه‌شنبه",
  wed: "چهارشنبه",
  thu: "پنجشنبه",
  fri: "جمعه",
};

const DAY_KEYS_EN: Record<string, string> = {
  sat: "Sat",
  sun: "Sun",
  mon: "Mon",
  tue: "Tue",
  wed: "Wed",
  thu: "Thu",
  fri: "Fri",
};

export function getDayLabel(key: string, locale: string): string {
  return locale === "fa" ? DAY_KEYS_FA[key] ?? key : DAY_KEYS_EN[key] ?? key;
}

export const PRICE_TIER_LABELS: Record<string, { fa: string; en: string }> = {
  budget:    { fa: "مقرون‌به‌صرفه", en: "Budget" },
  moderate:  { fa: "معمولی",        en: "Moderate" },
  upscale:   { fa: "لوکس",          en: "Upscale" },
  luxury:    { fa: "پریمیوم",       en: "Luxury" },
};

export const NOISE_LABELS: Record<string, { fa: string; en: string }> = {
  quiet:    { fa: "آرام",         en: "Quiet" },
  moderate: { fa: "نسبتاً آرام",  en: "Moderate" },
  lively:   { fa: "شلوغ",         en: "Lively" },
  loud:     { fa: "پرسروصدا",    en: "Loud" },
};