@using System.Globalization
@using System.Linq
@using Prefab.Web.Client.Models.Shared

<Card Variant="CardVariant.Product"
      Layout="@Layout"
      CssClass="@CssClass"
      ImagePlaceholderText="@ImagePlaceholderText"
      AdditionalAttributes="RootAttributes"
      ShowBadges="@ShowBadgesSection"
      ShowMeta="@ShowMetaSection"
      ShowRating="@ShouldRenderRating"
      ShowDescription="@ShowDescriptionSection"
      ShowFooter="false"
      Prices="@PricesTemplate">
	<Badges>
		@if (Product.IsOnSale)
		{
			<div class="product-card__badge product-card__badge--style--sale">Sale</div>
		}
		@foreach (var badge in Product.Badges.Where(static badge => !string.IsNullOrWhiteSpace(badge)))
		{
			<div class="product-card__badge">@badge</div>
		}
	</Badges>
	<BadgesContent>
		@BadgesContent?.Invoke(Product)
	</BadgesContent>
	<Image>
		<a href="@Product.Url">
			<img src="@ImageSource"
			     alt="@ImageAltText"
			     loading="lazy" />
		</a>
	</Image>
	<Meta>
		@if (!string.IsNullOrWhiteSpace(Product.CategoryName))
		{
			if (!string.IsNullOrWhiteSpace(Product.CategoryUrl))
			{
				<a href="@Product.CategoryUrl">@Product.CategoryName</a>
			}
			else
			{
				@Product.CategoryName
			}
		}
	</Meta>
	<Heading>
		<a href="@Product.Url">
			@Product.Title
		</a>
	</Heading>
	<Rating>
		@if (Product.ReviewCount > 0)
		{
			<div class="product-card__rating-title">@GetRatingTitle()</div>
		}
		<div class="product-card__rating-stars">
			<div class="rating" aria-label="@RatingAriaLabel">
				<div class="rating__body">
					@foreach (var star in Enumerable.Range(1, TotalStars))
					{
						var isActive = star <= Math.Clamp(Product.Rating, 0, TotalStars);
						<svg class="rating__star @(isActive ? "rating__star--active" : string.Empty)"
						     width="13px"
						     height="12px"
						     aria-hidden="true">
							<g class="rating__fill">
								<use xlink:href="images/sprite.svg#star-normal"></use>
							</g>
							<g class="rating__stroke">
								<use xlink:href="images/sprite.svg#star-normal-stroke"></use>
							</g>
						</svg>
					}
				</div>
			</div>
		</div>
	</Rating>
	<Description>
		@DescriptionContent?.Invoke(Product)
	</Description>
</Card>

@code {
	private static readonly CultureInfo PriceCulture = CultureInfo.CurrentCulture;
	private const string PlaceholderImageDataUrl = "data:image/svg+xml;base64,PHN2ZyB4bWxucz0naHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmcnIHZpZXdCb3g9JzAgMCA0MDAgNDAwJz48cmVjdCB3aWR0aD0nNDAwJyBoZWlnaHQ9JzQwMCcgZmlsbD0nI2YzZjNmMycvPjx0ZXh0IHg9JzUwJScgeT0nNTAlJyBkb21pbmFudC1iYXNlbGluZT0nbWlkZGxlJyB0ZXh0LWFuY2hvcj0nbWlkZGxlJyBmb250LWZhbWlseT0nT3BlbiBTYW5zLCBBcmlhbCwgc2Fucy1zZXJpZicgZm9udC1zaXplPScyOCcgZmlsbD0nIzliOWI5Yic+SW1hZ2UgY29taW5nIHNvb248L3RleHQ+PC9zdmc+";

	[Parameter, EditorRequired]
	public ProductCardModel Product { get; set; } = default!;

	[Parameter]
	public string Layout { get; set; } = "grid";

	[Parameter]
	public string CssClass { get; set; } = string.Empty;

	[Parameter]
	public string ImagePlaceholderText { get; set; } = "Image coming soon";

	[Parameter]
	public RenderFragment<ProductCardModel>? BadgesContent { get; set; }

	[Parameter]
	public RenderFragment<ProductCardModel>? DescriptionContent { get; set; }

	[Parameter]
	public bool ShowPrice { get; set; }

	private bool HasBadges => Product.IsOnSale || Product.Badges.Any(static badge => !string.IsNullOrWhiteSpace(badge));

	private bool ShouldRenderRating => Product.Rating > 0 || Product.ReviewCount > 0;

	private bool ShowBadgesSection => HasBadges || BadgesContent is not null;

	private bool ShowMetaSection => !string.IsNullOrWhiteSpace(Product.CategoryName);

	private bool ShowDescriptionSection => DescriptionContent is not null;

	private RenderFragment? PricesTemplate => !ShowPrice || !Product.HasPrice
		? null
		: @<text>
			<div class="product-card__price">
				<span class="product-card__price-new">@FormatMoney(Product.FromPrice!)</span>
				@if (Product.OldPrice.HasValue)
				{
					<span class="product-card__price-old">@FormatDecimal(Product.OldPrice.Value)</span>
				}
			</div>
		</text>;

	private string RatingAriaLabel => Product.Rating > 0
		? $"{Math.Clamp(Product.Rating, 0, TotalStars)} out of {TotalStars}"
		: "No rating yet";

	private IReadOnlyDictionary<string, object>? RootAttributes =>
		string.IsNullOrWhiteSpace(Product.Sku)
			? null
			: new Dictionary<string, object>
			{
				["data-sku"] = Product.Sku
			};

	private string FormatMoney(MoneyModel money) => money.Amount.ToString("C", PriceCulture);

	private string FormatDecimal(decimal value) => value.ToString("C", PriceCulture);

	private string GetRatingTitle() => $"Reviews ({Math.Max(Product.ReviewCount, 0)})";

	private string ImageSource => string.IsNullOrWhiteSpace(Product.PrimaryImageUrl)
		? PlaceholderImageDataUrl
		: Product.PrimaryImageUrl!;

	private string ImageAltText => string.IsNullOrWhiteSpace(Product.PrimaryImageUrl)
		? ImagePlaceholderText
		: Product.Title;

	private const int TotalStars = 5;
}