const FavoriteService = require("../services/FavoriteService");

class FavoriteController {
    index(req, res) {
        const favorites = FavoriteService.getFavorites(req.user.id, req.user.household_id);

        res.locals.title = "Favorieten";
        res.render("favorites/index", {
            favorites,
            user: req.user
        });
    }

    toggle(req, res) {
        const productId = Number.parseInt(req.params.id, 10);

        if (!Number.isInteger(productId)) {
            req.flash("error", "Product niet gevonden.");
            return res.redirect("/products");
        }

        const isFavorite = FavoriteService.toggleFavorite(req.user.id, productId, req.user.household_id);
        if (!isFavorite && !FavoriteService.getFavoriteIds(req.user.id, req.user.household_id).has(productId)) {
            req.flash("error", "Product niet gevonden.");
            return res.redirect("/products");
        }

        req.flash("success", isFavorite ? "Product toegevoegd aan favorieten." : "Product verwijderd uit favorieten.");
        res.redirect("/products");
    }

    remove(req, res) {
        const productId = Number.parseInt(req.params.productId, 10);

        if (!Number.isInteger(productId)) {
            req.flash("error", "Product niet gevonden.");
            return res.redirect("/favorites");
        }

        const removed = FavoriteService.removeFavorite(req.user.id, productId, req.user.household_id);
        if (!removed) {
            req.flash("error", "Product niet gevonden in favorieten.");
            return res.redirect("/favorites");
        }

        req.flash("success", "Product verwijderd uit favorieten.");
        res.redirect("/favorites");
    }
}

module.exports = new FavoriteController();