initial commit

Models/RepositoryPageModel.cs

@@ -0,0 +1,44 @@
+using Microsoft.Data.SqlClient;
+
+namespace Library.Models;
+
+public class RepositoryPageModel : BasePageModel
+{
+	public BookListData Books { get; } = new( );
+	public CategoryItemData CategoryData { init; get; } = null!;
+	public List<CategoryItemData> CategoryPath { init; get; } = new( );
+	public PagingData PagingData { init; get; } = null!;
+
+	public RepositoryPageModel( SqlConnection? db , int category_index , int page_index )
+		: base( db )
+	{
+		CategoryData = LookupCategoryData( category_index );
+		BuildCategoryPath( CategoryTree.FindCategory( CategoryData.ParentID ) );
+		Books.LoadCategory( db! , CategoryData.ID , page_index , 20 );
+
+		int books_in_category = BookListData.GetCategoryCount( db! , category_index );
+		PagingData = new PagingData( "/Repository/" + category_index + "?page=" , page_index , books_in_category , 20 );
+	}
+
+	private CategoryItemData LookupCategoryData( int category_index )
+	{
+		CategoryItemData? category_data = CategoryTree.FindCategory( category_index );
+		if ( category_data != null )
+			return category_data!;
+		return CategoryTree.FindCategory( CategoryTree.GetRootID( ) )!;
+	}
+
+	private void BuildCategoryPath( CategoryItemData? item )
+	{
+		if ( item == null )
+			return;
+
+		CategoryItemData? parent_item = CategoryTree.FindCategory( item!.ParentID );
+		if ( parent_item != null )
+			BuildCategoryPath( parent_item );
+
+		CategoryPath.Add( item! );
+	}
+
+
+}