public async Task <ChartViewModel> CreateAsync()
{
var results = await _parkRepository.GetAllOrdersAsync();
var products = await _parkRepository.GetShopProductsAsync();
var count = new decimal[products.Length];
var itemsPurchased = results.Sum(r => r.Items.Sum(i => i.Quantity));
foreach (var order in results)
{
foreach (var item in order.Items)
{
count[Array.FindIndex(products, p => p.ProductId == item.ProductId)] += item.Quantity;
}
}
for (int i = 0; i < products.Length; i++)
{
count[i] = (count[i] / itemsPurchased) * 100m;
}
var builder = new ChartBuilder(ChartType.pie)
.AddDataX(products.Select(p => p.Name).ToArray())
.AddDatasetY(count,
dp: 2,
label: "% of all purchased items"
)
.AddBackgroundColors()
.SetTitle("Percentage of items purchased from all shop orders")
.SetDuration(2)
.SetMaintainAspectRatio(true, true);
var chart = builder.GetChart();
return(new ChartViewModel(chart));
}
public async Task <ProductModel[]> GetShopProductsAsync()
{
return(_mapper.Map <ProductModel[]>(await _parkRepository.GetShopProductsAsync()));
}
