V1.1 met AI functie

controllers/MenuController.js

@@ -0,0 +1,67 @@
+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),
+                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();

routes/web.js

@@ -34,6 +34,9 @@ require("../controllers/CategoryController");
 const ShoppingListController =
 require("../controllers/ShoppingListController");
 
+const MenuController =
+require("../controllers/MenuController");
+
 router.get(
     "/",
     auth,
@@ -122,6 +125,24 @@ router.get(
     ShoppingListController.index.bind(ShoppingListController)
 );
 
+router.get(
+    "/menu",
+    auth,
+    MenuController.index.bind(MenuController)
+);
+
+router.post(
+    "/menu/generate",
+    auth,
+    MenuController.generate.bind(MenuController)
+);
+
+router.post(
+    "/menu/add",
+    auth,
+    MenuController.addToList.bind(MenuController)
+);
+
 router.post(
     "/lists",
     auth,

services/MenuService.js

@@ -0,0 +1,157 @@
+const db = require("../config/database");
+const ProductRepository = require("../repositories/ProductRepository");
+
+
+function normalizeName(name) {
+    return name.trim().toLowerCase().replace(/\s+/g, " ");
+}
+
+
+class MenuService {
+
+
+    async generate(preferences) {
+        const apiKey = process.env.OPENAI_API_KEY;
+        if (!apiKey) {
+            throw new Error("OPENAI_API_KEY ontbreekt in de configuratie.");
+        }
+
+        const response = await fetch("https://api.openai.com/v1/chat/completions", {
+            method: "POST",
+            headers: {
+                "Content-Type": "application/json",
+                Authorization: `Bearer ${apiKey}`
+            },
+            body: JSON.stringify({
+                model: process.env.OPENAI_MODEL || "gpt-4o-mini",
+                response_format: { type: "json_object" },
+                messages: [
+                    {
+                        role: "system",
+                        content: "Je maakt praktische weekmenu's. Geef uitsluitend geldige JSON terug met precies de structuur {days:[{day,recipe,ingredients:[{name,amount,unit}]}]}. Gebruik zeven dagen, Nederlandse productnamen, positieve numerieke hoeveelheden en korte recepten."
+                    },
+                    {
+                        role: "user",
+                        content: `Maak een weekmenu voor ${preferences.people} personen. Dieet: ${preferences.diet || "geen specifiek dieet"}. Niet gewenst: ${preferences.exclude || "niets"}. Budget: ${preferences.budget || "geen voorkeur"}.`
+                    }
+                ]
+            })
+        });
+
+        if (!response.ok) {
+            let providerMessage = "onbekende fout";
+            try {
+                const errorPayload = await response.json();
+                providerMessage = errorPayload.error?.message || providerMessage;
+            } catch (error) {
+                providerMessage = `HTTP ${response.status}`;
+            }
+            throw new Error(`AI-service fout (${response.status}): ${providerMessage}`);
+        }
+
+        const payload = await response.json();
+        if (!payload.choices?.[0]?.message?.content) {
+            throw new Error("De AI-service gaf geen menu-inhoud terug.");
+        }
+        let menu;
+        try {
+            menu = JSON.parse(payload.choices?.[0]?.message?.content || "{}");
+        } catch (error) {
+            throw new Error("De AI-service gaf geen geldig menu terug.");
+        }
+
+        if (!Array.isArray(menu.days) || menu.days.length === 0) {
+            throw new Error("De AI-service gaf een leeg menu terug.");
+        }
+
+        menu.days = menu.days.map(day => ({
+            day: String(day.day || "Dag"),
+            recipe: String(day.recipe || "Onbekend recept"),
+            ingredients: Array.isArray(day.ingredients)
+                ? day.ingredients
+                    .filter(item => item && String(item.name || "").trim())
+                    .map(item => ({
+                        name: String(item.name).trim(),
+                        amount: Number.isFinite(Number(item.amount)) ? Number(item.amount) : 1,
+                        unit: String(item.unit || "")
+                    }))
+                : []
+        }));
+
+        return menu;
+    }
+
+
+    getNewProducts(menu) {
+        const existingNames = new Set(
+            ProductRepository.getAll().map(product => normalizeName(product.name))
+        );
+        const seen = new Set();
+        const newProducts = [];
+
+        for (const day of menu.days) {
+            for (const ingredient of day.ingredients) {
+                const key = normalizeName(ingredient.name);
+                if (!existingNames.has(key) && !seen.has(key)) {
+                    seen.add(key);
+                    newProducts.push(ingredient.name);
+                }
+            }
+        }
+
+        return newProducts;
+    }
+
+
+    addToShoppingList(householdId, name, menu) {
+        const products = ProductRepository.getAll();
+        const productsByName = new Map(
+            products.map(product => [normalizeName(product.name), product])
+        );
+        const insertProduct = db.prepare(`
+            INSERT INTO products (name, category_id, barcode) VALUES (?, NULL, NULL)
+        `);
+        const insertList = db.prepare(`
+            INSERT INTO shopping_lists (household_id, name) VALUES (?, ?)
+        `);
+        const insertItem = db.prepare(`
+            INSERT INTO shopping_list_items (list_id, product_id, amount, sort_order)
+            VALUES (?, ?, ?, ?)
+        `);
+
+        const create = db.transaction(() => {
+            const listResult = insertList.run(householdId, name);
+            const listId = listResult.lastInsertRowid;
+            let sortOrder = 0;
+            const added = new Set();
+
+            for (const day of menu.days) {
+                for (const ingredient of day.ingredients) {
+                    const key = normalizeName(ingredient.name);
+                    if (added.has(key)) continue;
+
+                    let product = productsByName.get(key);
+                    if (!product) {
+                        const result = insertProduct.run(ingredient.name);
+                        product = { id: result.lastInsertRowid, name: ingredient.name };
+                        productsByName.set(key, product);
+                    }
+
+                    const amount = Number(ingredient.amount);
+                    insertItem.run(listId, product.id, amount > 0 ? amount : 1, sortOrder);
+                    added.add(key);
+                    sortOrder += 1;
+                }
+            }
+
+            return listId;
+        });
+
+        return create();
+    }
+
+
+}
+
+
+module.exports = new MenuService();

views/auth/login.ejs

@@ -73,16 +73,3 @@
     </div>
 
 </div>
-
-
-
-</form>
-
-<p class="text-secondary mt-3">
-    Nog geen account? <a href="/register">Registreren</a>
-</p>
-
-
-</div>
-
-</div>

views/menu/index.ejs

@@ -0,0 +1,33 @@
+<div class="page-header mb-4">
+    <h1>Weekmenu maken</h1>
+    <p class="text-secondary">Laat een menu maken en controleer het voordat de boodschappenlijst wordt aangemaakt.</p>
+</div>
+
+<div class="row">
+    <div class="col-md-8">
+        <div class="card">
+            <div class="card-header"><h2 class="card-title">Jouw voorkeuren</h2></div>
+            <div class="card-body">
+                <form method="post" action="/menu/generate">
+                    <label class="form-label" for="people">Aantal personen</label>
+                    <input id="people" class="form-control mb-3" type="number" name="people"
+                           value="2" min="1" max="12" required>
+
+                    <label class="form-label" for="diet">Dieet of voorkeur</label>
+                    <input id="diet" class="form-control mb-3" type="text" name="diet"
+                           placeholder="bijv. vegetarisch">
+
+                    <label class="form-label" for="exclude">Niet gewenst</label>
+                    <input id="exclude" class="form-control mb-3" type="text" name="exclude"
+                           placeholder="bijv. champignons, noten">
+
+                    <label class="form-label" for="budget">Budget</label>
+                    <input id="budget" class="form-control mb-4" type="text" name="budget"
+                           placeholder="bijv. maximaal 80 euro">
+
+                    <button class="btn btn-primary" type="submit">Weekmenu maken</button>
+                </form>
+            </div>
+        </div>
+    </div>
+</div>

views/menu/preview.ejs

@@ -0,0 +1,44 @@
+<div class="page-header mb-4">
+    <a href="/menu" class="btn btn-link">&larr; Voorkeuren aanpassen</a>
+    <h1>Weekmenu controleren</h1>
+</div>
+
+<div class="row">
+    <div class="col-md-8">
+        <% menu.days.forEach(day => { %>
+            <div class="card mb-3">
+                <div class="card-header"><h2 class="card-title"><%= day.day %>: <%= day.recipe %></h2></div>
+                <div class="card-body">
+                    <ul class="mb-0">
+                        <% day.ingredients.forEach(ingredient => { %>
+                            <li><%= ingredient.amount %> <%= ingredient.unit %> <%= ingredient.name %></li>
+                        <% }); %>
+                    </ul>
+                </div>
+            </div>
+        <% }); %>
+    </div>
+
+    <div class="col-md-4">
+        <div class="card">
+            <div class="card-header"><h2 class="card-title">Aan boodschappenlijst toevoegen</h2></div>
+            <div class="card-body">
+                <% if (newProducts.length > 0) { %>
+                    <p class="text-secondary small">Deze producten bestaan nog niet en worden aangemaakt:</p>
+                    <ul class="small">
+                        <% newProducts.forEach(product => { %><li><%= product %></li><% }); %>
+                    </ul>
+                <% } else { %>
+                    <p class="text-secondary small">Alle producten bestaan al in PantryHub.</p>
+                <% } %>
+                <form method="post" action="/menu/add">
+                    <input type="hidden" name="menu" value="<%= JSON.stringify(menu) %>">
+                    <label class="form-label" for="list-name">Naam boodschappenlijst</label>
+                    <input id="list-name" class="form-control mb-3" type="text" name="list_name"
+                           value="<%= listName %>" maxlength="120" required>
+                    <button class="btn btn-primary w-100" type="submit">Toevoegen aan lijst</button>
+                </form>
+            </div>
+        </div>
+    </div>
+</div>

views/partials/navbar.ejs

@@ -26,6 +26,7 @@
         <nav class="navbar-nav ms-auto">
         <a class="nav-link" href="/">Dashboard</a>
         <a class="nav-link" href="/lists">Lijsten</a>
+        <a class="nav-link" href="/menu">Weekmenu</a>
         <a class="nav-link" href="/products">Producten</a>
         <a class="nav-link" href="/categories">Categorieën</a>
         <a class="nav-link" href="/household">Huishouden</a>