Add product categories and full information display

src/FrontOffice.Main/Utilities/ProductService.cs

@@ -1,4 +1,6 @@
 using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Linq;
 using FrontOffice.BFF.Products.Protobuf.Protos.Products;
 
 namespace FrontOffice.Main.Utilities;
@@ -7,13 +9,18 @@ public record Product(
     long Id,
     string Title,
     string Description,
+    string FullInformation,
     string ImageUrl,
     long Price,
-    int Discount = 0,
+    int Discount = 1,
     int Rate = 0,
     int RemainingCount = 0)
 {
-    public IReadOnlyList<ProductGalleryImage> Gallery { get; init; } = Array.Empty<ProductGalleryImage>();
+    public IReadOnlyList<ProductGalleryImage> Gallery { get; init; }
+        = [];
+
+    public IReadOnlyList<ProductCategoryPathInfo> Categories { get; init; }
+        = [];
 }
 
 public record ProductGalleryImage(
@@ -23,16 +30,28 @@ public record ProductGalleryImage(
     string ImageUrl,
     string ThumbnailUrl);
 
+public record ProductCategoryNodeInfo(
+    long Id,
+    string Title,
+    long? ParentId);
+
+public record ProductCategoryPathInfo(
+    long CategoryId,
+    string Title,
+    IReadOnlyList<ProductCategoryNodeInfo> Nodes)
+{
+    public string DisplayLabel => string.Join(" › ", Nodes.Select(node => node.Title));
+    public ProductCategoryNodeInfo Leaf => Nodes.Last();
+}
+
 public class ProductService
 {
-
     private readonly ConcurrentDictionary<long, Product> _cache = new();
     private readonly ProductsContract.ProductsContractClient _client;
 
     public ProductService(ProductsContract.ProductsContractClient client)
     {
         _client = client;
-    
     }
 
     public async Task<List<Product>> GetProductsAsync(string? query = null)
@@ -57,8 +76,11 @@ public class ProductService
             if (!string.IsNullOrWhiteSpace(query))
             {
                 var q = query.Trim();
-                list = list.Where(p => p.Title.Contains(q, StringComparison.OrdinalIgnoreCase) || p.Description.Contains(q, StringComparison.OrdinalIgnoreCase));
+                list = list.Where(p =>
+                    p.Title.Contains(q, StringComparison.OrdinalIgnoreCase) ||
+                    p.Description.Contains(q, StringComparison.OrdinalIgnoreCase));
             }
+
             return list.OrderBy(p => p.Id).ToList();
         }
     }
@@ -84,7 +106,8 @@ public class ProductService
         }
     }
 
-    private List<Product> MapAndCache(Google.Protobuf.Collections.RepeatedField<GetAllProductsByFilterResponseModel> models)
+    private List<Product> MapAndCache(
+        Google.Protobuf.Collections.RepeatedField<GetAllProductsByFilterResponseModel> models)
     {
         var list = new List<Product>();
         foreach (var m in models)
@@ -93,15 +116,20 @@ public class ProductService
                 Id: m.Id,
                 Title: m.Title ?? string.Empty,
                 Description: m.Description ?? string.Empty,
+                FullInformation: m.FullInformation ?? string.Empty,
                 ImageUrl: string.IsNullOrWhiteSpace(m.ImagePath) ? string.Empty : UrlUtility.DownloadUrl + m.ImagePath,
                 Price: m.Price,
                 Discount: m.Discount,
                 Rate: m.Rate,
                 RemainingCount: m.RemainingCount
             );
-            _cache[p.Id] = p;
+            if (_cache.All(a => a.Key != p.Id))
+                _cache[p.Id] = p;
+
+
             list.Add(p);
         }
+
         return list;
     }
 
@@ -120,18 +148,53 @@ public class ProductService
             Id: model.Id,
             Title: model.Title ?? string.Empty,
             Description: model.Description ?? string.Empty,
+            FullInformation: model.FullInformation ?? string.Empty,
             ImageUrl: BuildUrl(model.ImagePath),
             Price: model.Price,
             Discount: model.Discount,
             Rate: model.Rate,
             RemainingCount: model.RemainingCount)
         {
-            Gallery = gallery
+            Gallery = gallery,
+            Categories = MapCategoryPaths(model.Categories)
         };
 
         _cache[product.Id] = product;
         return product;
     }
 
-    private static string BuildUrl(string? path) => string.IsNullOrWhiteSpace(path) ? string.Empty : UrlUtility.DownloadUrl + path;
-}
+    private static string BuildUrl(string? path) =>
+        string.IsNullOrWhiteSpace(path) ? string.Empty : UrlUtility.DownloadUrl + path;
+
+    private static IReadOnlyList<ProductCategoryPathInfo> MapCategoryPaths(IEnumerable<ProductCategoryPath>? categories)
+    {
+        if (categories is null)
+        {
+            return Array.Empty<ProductCategoryPathInfo>();
+        }
+
+        var result = new List<ProductCategoryPathInfo>();
+        foreach (var category in categories)
+        {
+            var nodes = category.Path
+                .Select(node => new ProductCategoryNodeInfo(
+                    Id: node.Id,
+                    Title: node.Title ?? string.Empty,
+                    ParentId: node.ParentId
+                ))
+                .ToList();
+
+            if (nodes.Count == 0)
+            {
+                continue;
+            }
+
+            result.Add(new ProductCategoryPathInfo(
+                CategoryId: category.CategoryId,
+                Title: category.Title ?? string.Empty,
+                Nodes: nodes));
+        }
+
+        return result;
+    }
+}