import type { WishlistRepository } from '@/domain/wishlist/repository';
import type { WishlistItem } from '@/domain/wishlist/entities';
import { STORAGE_KEYS } from '@/domain/shared/constants';

export class LocalStorageWishlistRepository implements WishlistRepository {
  load(): WishlistItem[] {
    if (typeof window === 'undefined') return [];

    const raw = localStorage.getItem(STORAGE_KEYS.wishlist);
    if (!raw) return [];

    try {
      const parsed = JSON.parse(raw) as WishlistItem[];
      return Array.isArray(parsed) ? parsed : [];
    } catch {
      return [];
    }
  }

  save(items: WishlistItem[]): void {
    if (typeof window === 'undefined') return;
    localStorage.setItem(STORAGE_KEYS.wishlist, JSON.stringify(items));
  }
}