import { type ClassValue, clsx } from 'clsx';
import { ProductFeaturesSchemas } from '../types';

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

export function generateId(lenght?: number): string {
  return Math.random().toString(lenght || 36).substring(2) + Date.now().toString(lenght || 36);
}

export function addMonths(date: Date, months: number): Date {
  const result = new Date(date);
  result.setMonth(result.getMonth() + months);
  return result;
}

export function formatCurrency(amount: number, currency = 'USD'): string {
  return new Intl.NumberFormat('en-US', {
    style: 'currency',
    currency,
  }).format(amount);
}

export function formatDate(date: Date): string {
  return new Intl.DateTimeFormat('en-US', {
    year: 'numeric',
    month: 'long',
    day: 'numeric',
  }).format(date);
}

export function isSubscriptionExpired(endDate: Date): boolean {
  return new Date() > endDate;
}

export function getDaysUntilExpiry(endDate: Date): number {
  const now = new Date();
  const diffTime = endDate.getTime() - now.getTime();
  return Math.ceil(diffTime / (1000 * 60 * 60 * 24));
}

export function getProductFeaturesSchema<
  T extends keyof typeof ProductFeaturesSchemas
>(productName: T) {
  return ProductFeaturesSchemas[productName];
}