public async Task Delete(string id)
{
ShopApp.Models.Product product = this.dbContext.Products.FirstOrDefault(p => p.Id == id);
// we delete the product only if it already exists
if (product != null)
{
this.dbContext.Products.Remove(product);
await this.dbContext.SaveChangesAsync();
}
}
public async Task Edit(ProductBaseInputModel model)
{
ShopApp.Models.Product productEntity = this.dbContext.Products
.FirstOrDefault(product => product.Id == ((ProductEditModel)model).Id);
if (productEntity == null)
{
throw new InvalidOperationException("Invalid product id!");
}
productEntity.Name = model.Name;
productEntity.Price = model.Price;
productEntity.Description = model.Description;
productEntity.CoverUrl = model.CoverUrl;
productEntity.CategoryId = model.CategoryId;
await this.dbContext.SaveChangesAsync();
}
public async Task <ProductBaseInputModel> Create(ProductBaseInputModel model)
{
ShopApp.Models.Product productEntity = new ShopApp.Models.Product
{
Id = Guid.NewGuid().ToString(),
Name = model.Name,
AddedOn = DateTime.UtcNow,
Description = model.Description,
CoverUrl = model.CoverUrl,
Price = model.Price,
CategoryId = model.CategoryId
};
this.dbContext.Products.Add(productEntity);
await this.dbContext.SaveChangesAsync();
return(model);
}
public async Task DecrementProductStockCount(string id, int quantity)
{
bool productExists = this.Exists(id);
if (productExists)
{
ShopApp.Models.Product product = this.dbContext.Products.FirstOrDefault(p => p.Id == id);
if (product.StockCount - quantity < 0)
{
throw new InvalidOperationException($"Not enough quantity of {product.Name} product.");
}
product.StockCount = product.StockCount - quantity;
await this.dbContext.SaveChangesAsync();
}
else
{
throw new InvalidOperationException($"Invalid product id.");
}
}
