* Extended functionalities

* Added different UIs

MealPlan.Api/Services/Generators/CatalogMatchingService.cs

@@ -0,0 +1,60 @@
+using MealPlan.Api.Data;
+using Microsoft.EntityFrameworkCore;
+
+namespace MealPlan.Api.Services.Generators;
+
+public interface ICatalogMatchingService
+{
+    Task<int?> ResolveCatalogItemIdAsync(string nameOrCatalogName, CancellationToken ct = default);
+}
+
+public class CatalogMatchingService : ICatalogMatchingService
+{
+    private readonly AppDbContext _db;
+    private List<CatalogEntry>? _cache;
+
+    public CatalogMatchingService(AppDbContext db) => _db = db;
+
+    public async Task<int?> ResolveCatalogItemIdAsync(string nameOrCatalogName, CancellationToken ct = default)
+    {
+        if (string.IsNullOrWhiteSpace(nameOrCatalogName)) return null;
+
+        var cache = await GetCacheAsync(ct);
+        var key = Normalize(nameOrCatalogName);
+
+        var exact = cache.FirstOrDefault(c =>
+            c.NameKey == key || c.NamePlKey == key || c.CatalogNameKey == key);
+        if (exact is not null) return exact.Id;
+
+        return cache
+            .Where(c => key.Contains(c.NameKey, StringComparison.Ordinal) ||
+                        c.NameKey.Contains(key, StringComparison.Ordinal) ||
+                        (!string.IsNullOrEmpty(c.NamePlKey) &&
+                         (key.Contains(c.NamePlKey, StringComparison.Ordinal) ||
+                          c.NamePlKey.Contains(key, StringComparison.Ordinal))))
+            .OrderBy(c => Math.Abs(c.NameKey.Length - key.Length))
+            .FirstOrDefault()
+            ?.Id;
+    }
+
+    private async Task<List<CatalogEntry>> GetCacheAsync(CancellationToken ct)
+    {
+        if (_cache is not null) return _cache;
+
+        _cache = await _db.IngredientNutritionCatalog.AsNoTracking()
+            .Where(i => i.IsActive)
+            .Select(i => new CatalogEntry(i.Id, i.Name, i.NamePl))
+            .ToListAsync(ct);
+
+        return _cache;
+    }
+
+    private static string Normalize(string value) => value.Trim().ToLowerInvariant();
+
+    private sealed record CatalogEntry(int Id, string Name, string? NamePl)
+    {
+        public string NameKey { get; } = Name.Trim().ToLowerInvariant();
+        public string NamePlKey { get; } = NamePl?.Trim().ToLowerInvariant() ?? string.Empty;
+        public string CatalogNameKey { get; } = Name.Trim().ToLowerInvariant();
+    }
+}