const FavoriteRepository = require("../repositories/FavoriteRepository");
const ProductRepository = require("../repositories/ProductRepository");

class FavoriteService {
    getFavorites(userId, householdId) {
        return FavoriteRepository.getByHousehold(householdId);
    }

    getFavoriteIds(userId, householdId) {
        return FavoriteRepository.getIdsByHousehold(householdId);
    }

    toggleFavorite(userId, productId, householdId) {
        const product = ProductRepository.findById(productId, householdId);
        if (!product) return false;

        const current = FavoriteRepository.find(householdId, productId);
        if (current) {
            FavoriteRepository.remove(householdId, productId);
            return false;
        }

        FavoriteRepository.add(householdId, productId);
        return true;
    }

    removeFavorite(userId, productId, householdId) {
        const product = ProductRepository.findById(productId, householdId);
        if (!product) return false;

        return FavoriteRepository.remove(householdId, productId).changes > 0;
    }
}

module.exports = new FavoriteService();