@inherits DComponentBase

@* daisyUI Drawer: https://daisyui.com/components/drawer/ . daisyUI's hidden drawer-toggle checkbox is bound to IsOpen
   (@bind-IsOpen); the overlay label toggles it natively, Escape closes it, and any
   <label for="{ToggleId}" class="btn drawer-button"> in the content toggles it too. Put the navbar and footer in
   ChildContent. *@
<div @attributes="AdditionalAttributes" class="@CssClass" @onkeydown="OnKeyDown">
	<input id="@toggleId" type="checkbox" class="drawer-toggle" checked="@IsOpen" @onchange="OnChange" />
	<div class="@Cx("drawer-content", ContentClass)">
		@ChildContent
	</div>
	<div class="@Cx("drawer-side", SideClass)">
		<label for="@toggleId" aria-label="@CloseText" class="drawer-overlay"></label>
		@Side
	</div>
</div>

@code {
	/// <summary>The page content, beside the side.</summary>
	[Parameter] public RenderFragment ChildContent { get; set; }
	/// <summary>The sidebar, e.g. &lt;ul class="menu bg-base-200 min-h-full w-80 p-4"&gt;.</summary>
	[Parameter] public RenderFragment Side { get; set; }
	[Parameter] public bool IsOpen { get; set; }
	[Parameter] public EventCallback<bool> IsOpenChanged { get; set; }
	/// <summary>Put the side on the right (drawer-end).</summary>
	[Parameter] public bool End { get; set; }
	[Parameter] public DDrawerOpenFrom OpenFrom { get; set; }
	/// <summary>The checkbox id, for drawer-button labels; defaults to a per-instance id.</summary>
	[Parameter] public string ToggleId { get; set; }
	/// <summary>Accessible name of the overlay, which closes the side.</summary>
	[Parameter] public string CloseText { get; set; } = "close sidebar";
	[Parameter] public string ContentClass { get; set; }
	[Parameter] public string SideClass { get; set; }

	readonly string uid = "d" + Guid.NewGuid().ToString("N")[..8];

	string toggleId => ToggleId ?? uid;

	string CssClass => Cx("drawer", End ? "drawer-end" : null, OpenFromClass, Class);

	string OpenFromClass => OpenFrom switch
	{
		DDrawerOpenFrom.Sm => "sm:drawer-open",
		DDrawerOpenFrom.Md => "md:drawer-open",
		DDrawerOpenFrom.Lg => "lg:drawer-open",
		DDrawerOpenFrom.Xl => "xl:drawer-open",
		DDrawerOpenFrom.Always => "drawer-open",
		_ => null
	};

	Task OnChange(ChangeEventArgs e) => SetOpen(e.Value is true);

	Task OnKeyDown(KeyboardEventArgs e) => e.Key == "Escape" && IsOpen ? SetOpen(false) : Task.CompletedTask;

	async Task SetOpen(bool isOpen)
	{
		IsOpen = isOpen;
		await IsOpenChanged.InvokeAsync(isOpen);
	}
}