feat: Add discount module with protobuf definitions and gRPC services

src/Protobufs/BackOffice.BFF.Products.Protobuf/Protos/products.proto

@@ -9,7 +9,7 @@ import "google/protobuf/duration.proto";
 import "google/protobuf/timestamp.proto";
 import "google/api/annotations.proto";
 
-option csharp_namespace = "CMSMicroservice.Protobuf.Protos.Products";
+option csharp_namespace = "BackOffice.BFF.Products.Protobuf.Protos.Products";
 
 service ProductsContract
 {
@@ -66,6 +66,46 @@ service ProductsContract
             body: "*"
         };
     };
+    rpc GetProductsForCategory(GetProductsForCategoryRequest) returns (GetProductsForCategoryResponse){
+        option (google.api.http) = {
+            get: "/GetProductsForCategory"
+        };
+    };
+    rpc GetCategories(GetCategoriesRequest) returns (GetCategoriesResponse){
+        option (google.api.http) = {
+            get: "/GetCategories"
+        };
+    };
+    rpc UpdateProductCategories(UpdateProductCategoriesRequest) returns (google.protobuf.Empty){
+        option (google.api.http) = {
+            post: "/UpdateProductCategories"
+            body: "*"
+        };
+    };
+    rpc UpdateCategoryProducts(UpdateCategoryProductsRequest) returns (google.protobuf.Empty){
+        option (google.api.http) = {
+            post: "/UpdateCategoryProducts"
+            body: "*"
+        };
+    };
+    
+    // Product Gallery / Image Management
+    rpc GetProductGallery(GetProductGalleryRequest) returns (GetProductGalleryResponse){
+        option (google.api.http) = {
+            get: "/GetProductGallery"
+        };
+    };
+    rpc AddProductImage(AddProductImageRequest) returns (AddProductImageResponse){
+        option (google.api.http) = {
+            post: "/AddProductImage"
+            body: "*"
+        };
+    };
+    rpc RemoveProductImage(RemoveProductImageRequest) returns (google.protobuf.Empty){
+        option (google.api.http) = {
+            delete: "/RemoveProductImage"
+        };
+    };
 }
 message CreateNewProductsRequest
 {
@@ -274,3 +314,106 @@ message ToggleProductStatusResponse
     int32 failed = 3;
     repeated BulkOperationError errors = 4;
 }
+
+// Category Product Item (for drag-drop UI)
+message CategoryProductItem
+{
+    int64 id = 1;
+    string title = 2;
+    bool selected = 3;
+}
+
+// Get Products for Category
+message GetProductsForCategoryRequest
+{
+    int64 category_id = 1;
+}
+
+message GetProductsForCategoryResponse
+{
+    repeated CategoryProductItem items = 1;
+}
+
+// Category Item (for product categories drag-drop)
+message CategoryItem
+{
+    int64 id = 1;
+    string title = 2;
+    bool selected = 3;
+}
+
+// Get Categories for Product
+message GetCategoriesRequest
+{
+    int64 product_id = 1;
+}
+
+message GetCategoriesResponse
+{
+    repeated CategoryItem items = 1;
+}
+
+// Update Product Categories
+message UpdateProductCategoriesRequest
+{
+    int64 product_id = 1;
+    repeated int64 category_ids = 2;
+}
+
+// Update Category Products
+message UpdateCategoryProductsRequest
+{
+    int64 category_id = 1;
+    repeated int64 product_ids = 2;
+}
+
+// Image File Model
+message ImageFileModel
+{
+    bytes file = 1;
+    string mime = 2;
+    string file_name = 3;
+}
+
+// Get Product Gallery
+message GetProductGalleryRequest
+{
+    int64 product_id = 1;
+}
+
+message ProductGalleryItem
+{
+    int64 product_gallery_id = 1;
+    int64 product_image_id = 2;
+    string title = 3;
+    string image_path = 4;
+    string image_thumbnail_path = 5;
+}
+
+message GetProductGalleryResponse
+{
+    repeated ProductGalleryItem items = 1;
+}
+
+// Add Product Image
+message AddProductImageRequest
+{
+    int64 product_id = 1;
+    string title = 2;
+    ImageFileModel image_file = 3;
+}
+
+message AddProductImageResponse
+{
+    int64 product_gallery_id = 1;
+    int64 product_image_id = 2;
+    string title = 3;
+    string image_path = 4;
+    string image_thumbnail_path = 5;
+}
+
+// Remove Product Image
+message RemoveProductImageRequest
+{
+    int64 product_gallery_id = 1;
+}