* Extended functionalities

* Added different UIs

meal-plan-frontend-angular/src/app/core/utils/meal-planner-suggestions.util.ts

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+import { MealPlanEntry } from '../models/meal-plan.models';
+import { MealCategory, RecipeListItem } from '../models/recipe.models';
+
+export const PLANNER_MEAL_CATEGORIES = [
+  MealCategory.Breakfast,
+  MealCategory.SecondBreakfast,
+  MealCategory.Lunch,
+  MealCategory.Dinner,
+] as const;
+
+export interface DayMealPlanning {
+  dailyTarget: number;
+  logged: number;
+  remaining: number;
+  slotTarget: number;
+  openSlots: number;
+  pendingCalories: number;
+}
+
+export interface PendingMealSelection {
+  category: MealCategory;
+  calories: number;
+}
+
+export function entryCaloriesTotal(entry: MealPlanEntry): number {
+  if (entry.calories == null) return 0;
+  return Math.round(entry.calories * entry.portions);
+}
+
+export function computeDayMealPlanning(
+  date: string,
+  category: MealCategory,
+  entries: MealPlanEntry[],
+  dailyTarget: number,
+  pending?: PendingMealSelection | null,
+): DayMealPlanning {
+  const dayEntries = entries.filter((e) => e.planDate === date);
+  const categoriesWithSaved = new Set(dayEntries.map((e) => e.mealCategory));
+  const existingInSlot = dayEntries.find((e) => e.mealCategory === category);
+
+  let logged = dayEntries.reduce((sum, e) => sum + entryCaloriesTotal(e), 0);
+
+  const pendingCalories =
+    pending && pending.category === category && pending.calories > 0 ? pending.calories : 0;
+
+  if (pendingCalories > 0) {
+    if (existingInSlot) {
+      logged = logged - entryCaloriesTotal(existingInSlot) + pendingCalories;
+    } else {
+      logged += pendingCalories;
+    }
+  }
+
+  const remaining = dailyTarget - logged;
+
+  const emptyCategories = PLANNER_MEAL_CATEGORIES.filter((cat) => !categoriesWithSaved.has(cat));
+  const currentSlotSaved = categoriesWithSaved.has(category);
+
+  let unfilled = [...emptyCategories];
+  if (pendingCalories > 0 && !currentSlotSaved) {
+    unfilled = unfilled.filter((cat) => cat !== category);
+  }
+
+  let openSlots: number;
+  if (currentSlotSaved) {
+    openSlots = Math.max(1, unfilled.length + 1);
+  } else if (pendingCalories > 0) {
+    openSlots = Math.max(1, unfilled.length);
+  } else if (unfilled.includes(category)) {
+    openSlots = Math.max(1, unfilled.length);
+  } else {
+    openSlots = Math.max(1, unfilled.length + 1);
+  }
+
+  const slotTarget = dailyTarget > 0 ? Math.round(Math.max(0, remaining) / openSlots) : 0;
+
+  return { dailyTarget, logged, remaining, slotTarget, openSlots, pendingCalories };
+}
+
+export function rankRecipeSuggestions(
+  recipes: RecipeListItem[],
+  category: MealCategory,
+  slotTarget: number,
+  limit = 6,
+): { recipe: RecipeListItem; diff: number }[] {
+  if (slotTarget <= 0) return [];
+
+  return recipes
+    .filter((r) => r.mealCategory === category && r.calories != null && r.calories > 0)
+    .map((recipe) => ({ recipe, diff: Math.abs(recipe.calories! - slotTarget) }))
+    .sort((a, b) => a.diff - b.diff || a.recipe.name.localeCompare(b.recipe.name))
+    .slice(0, limit);
+}
+
+export function estimateEntryCalories(recipe: RecipeListItem | null, portions: number): number | null {
+  if (!recipe?.calories) return null;
+  return Math.round(recipe.calories * portions);
+}