Add pantry and shopping lists

stacks/recipe/js/services/planStore.js

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+import { RECIPES } from '../data/catalog.js';
+import { MEAL_SLOTS } from '../planner/mealSlots.js';
+import { PLANS_STORAGE_KEY } from '../storageKeys.js';
+import { startOfDay } from './dateUtils.js';
+
+export function dateKey(d) {
+    const x = startOfDay(d);
+    const y = x.getFullYear();
+    const m = String(x.getMonth() + 1).padStart(2, '0');
+    const day = String(x.getDate()).padStart(2, '0');
+    return `${y}-${m}-${day}`;
+}
+
+export function newPlanEntryId() {
+    if (typeof crypto !== 'undefined' && typeof crypto.randomUUID === 'function') {
+        return crypto.randomUUID();
+    }
+    return `e${Date.now()}-${Math.random().toString(36).slice(2, 11)}`;
+}
+
+/** Jedna pora dnia = tablica wpisów { id, recipeId, servings } */
+export function normalizeSlotValue(v) {
+    if (!v) return [];
+    if (Array.isArray(v)) {
+        return v
+            .filter((x) => x && x.recipeId && RECIPES[x.recipeId])
+            .map((x) => ({
+                id: x.id && String(x.id).length ? String(x.id) : newPlanEntryId(),
+                recipeId: x.recipeId,
+                servings: Math.max(1, Math.min(12, Number(x.servings) || 1)),
+            }));
+    }
+    if (typeof v === 'object' && v.recipeId && RECIPES[v.recipeId]) {
+        return [{
+            id: newPlanEntryId(),
+            recipeId: v.recipeId,
+            servings: Math.max(1, Math.min(12, Number(v.servings) || 1)),
+        }];
+    }
+    return [];
+}
+
+export function normalizeDayPlan(day) {
+    if (!day || typeof day !== 'object') return {};
+    const out = {};
+    MEAL_SLOTS.forEach((s) => {
+        const arr = normalizeSlotValue(day[s.id]);
+        if (arr.length > 0) out[s.id] = arr;
+    });
+    return out;
+}
+
+export function normalizeAllPlans(plans) {
+    if (!plans || typeof plans !== 'object') return {};
+    const out = {};
+    Object.keys(plans).forEach((key) => {
+        const d = normalizeDayPlan(plans[key]);
+        if (Object.keys(d).length > 0) out[key] = d;
+    });
+    return out;
+}
+
+export function loadPlans() {
+    try {
+        const raw = localStorage.getItem(PLANS_STORAGE_KEY);
+        if (!raw) return {};
+        const parsed = JSON.parse(raw);
+        if (typeof parsed !== 'object' || parsed === null) return {};
+        return normalizeAllPlans(parsed);
+    } catch {
+        return {};
+    }
+}
+
+export function savePlans(plans) {
+    try {
+        localStorage.setItem(PLANS_STORAGE_KEY, JSON.stringify(plans));
+    } catch { /* ignore */ }
+}
+
+export function getDayPlan(plans, d) {
+    const key = dateKey(d);
+    const day = plans[key];
+    return day && typeof day === 'object' ? day : {};
+}