public static async Task AddProductToCategoryAsync(CategoryVM category, IEnumerable <ProductVM> products)
{
await Db.Categories.AddProductsAsync(category.Model, products.Select(p => p.Model).ToList()).ConfigureAwait(false);
foreach (var productVm in products)
{
if (category.AllProducts.Any(p => p.Model.Id == productVm.Model.Id))
{
continue;
}
var isGoodProduct = true;
if (category.IsFilterSetted)
{
isGoodProduct = Filters.IsGoodProduct(productVm.Model, category.FiltersManagerVM.FiltersVM.Model);
}
if (isGoodProduct)
{
await AsyncHelper.ExecuteAtUI(() => category.Products.Add(productVm)).ConfigureAwait(false);
}
category.AllProducts.Add(productVm);
}
}
private async void LoadProducts(CategoryVM category)
{
if (category is null)
{
return;
}
category.IsLoading = true;
await AsyncHelper.ExecuteAtUI(() => category.Products.Clear()).ConfigureAwait(false);
var productsFromDb =
await Db.Categories.GetAllProductsAsync(category.Model).ConfigureAwait(false);
var productVmForDataGrid = new List <ProductVM>();
foreach (var product in productsFromDb)
{
ProductVM productVm;
if (!_allProducts.ContainsKey(product.Id))
{
productVm = new ProductVM(product);
_allProducts.Add(product.Id, productVm);
}
else
{
productVm = _allProducts[product.Id];
}
productVmForDataGrid.Add(productVm);
}
await AsyncHelper.ExecuteAtUI(() => category.Products.AddRange(productVmForDataGrid)).ConfigureAwait(false);
category.AllProducts.Clear();
category.AllProducts.AddRange(category.Products);
category.IsLoading = false;
category.IsProductsLoaded = true;
}
private async Task GetCategoriesFromDb()
{
var expandedIds = GetExpandedCategoriesFromSettings();
var openedCategories = GetOpenedCategoriesFromSettings();
int selectedCategoryLastSesstion = 0;
if (!string.IsNullOrWhiteSpace(Settings.Default.SelectedCategoryId))
{
selectedCategoryLastSesstion = Convert.ToInt32(Settings.Default.SelectedCategoryId);
}
void ParseChildren(CategoryVM currentNode)
{
if (openedCategories.Contains(currentNode.Model.Id))
{
var currentSelectedCategory = SelectedCategory;
OpenCategory(currentNode);
SelectedCategory = currentNode.Model.Id == selectedCategoryLastSesstion
? currentNode
: currentSelectedCategory;
}
if (expandedIds.Contains(currentNode.Model.Id))
{
currentNode.IsExpanded = true;
}
if (currentNode.Model.Children is null)
{
return;
}
foreach (var child in currentNode.Model.Children.OrderBy(c => c.SortOrder))
{
var childVm = new CategoryVM(child)
{
ParentCollection = currentNode.ChildCategories
};
currentNode.ChildCategories.Add(childVm);
ParseChildren(childVm);
}
}
var allCategories = await Db.Categories.AllAsync().ConfigureAwait(false);
var firstLevel = allCategories.Where(c => c.ParentId == null).OrderBy(c => c.SortOrder).ToList();
if (!firstLevel.Any(c => c.Title == "Избранное" && c.IsFixed))
{
await CreateFixedCategory("Избранное", 100).ConfigureAwait(false);
}
if (!firstLevel.Any(c => c.Title == "Черный список" && c.IsFixed))
{
await CreateFixedCategory("Черный список", 200).ConfigureAwait(false);
}
foreach (var child in firstLevel)
{
var vm = new CategoryVM(child)
{
ParentCollection = Categories
};
ParseChildren(vm);
Categories.Add(vm);
}
}