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


class MenuController {


    index(req, res) {

        res.render("menu/index", { title: "Weekmenu" });

    }


    async generate(req, res) {
        const people = Number.parseInt(req.body.people, 10);
        const preferences = {
            people: Number.isInteger(people) && people > 0 && people <= 12 ? people : 2,
            diet: (req.body.diet || "").trim(),
            exclude: (req.body.exclude || "").trim(),
            budget: (req.body.budget || "").trim()
        };

        try {
            const menu = await MenuService.generate(preferences);
            res.render("menu/preview", {
                title: "Weekmenu controleren",
                menu,
                newProducts: MenuService.getNewProducts(menu, req.user.household_id),
                listName: "Weekboodschappen"
            });
        } catch (error) {
            req.flash("error", error.message);
            res.redirect("/menu");
        }
    }


    addToList(req, res) {
        let menu;
        try {
            menu = JSON.parse(req.body.menu || "{}");
        } catch (error) {
            req.flash("error", "Het menu kan niet worden gelezen.");
            return res.redirect("/menu");
        }

        if (!Array.isArray(menu.days) || menu.days.length === 0) {
            req.flash("error", "Het menu is leeg.");
            return res.redirect("/menu");
        }

        const listName = (req.body.list_name || "Weekboodschappen").trim();
        if (!listName) {
            req.flash("error", "Geef een naam voor de boodschappenlijst op.");
            return res.redirect("/menu");
        }

        const listId = MenuService.addToShoppingList(req.user.household_id, listName, menu);
        req.flash("success", "Weekmenu toegevoegd aan de boodschappenlijst.");
        res.redirect(`/lists/${listId}`);
    }


}


module.exports = new MenuController();