@namespace Oqtane.UI
@inject IJSRuntime JsRuntime
@inject NavigationManager NavigationManager
@inject SiteState SiteState

@DynamicComponent

@code {
    [CascadingParameter] PageState PageState { get; set; }

    RenderFragment DynamicComponent { get; set; }

    protected override void OnParametersSet()
    {
        // handle page redirection
        if (!string.IsNullOrEmpty(PageState.Page.Url))
        {
            NavigationManager.NavigateTo(PageState.Page.Url);
            return;
        }

        // set page title
        if (!string.IsNullOrEmpty(PageState.Page.Title))
        {
            SiteState.Properties.PageTitle = PageState.Page.Title;
        }
        else
        {
            SiteState.Properties.PageTitle = PageState.Site.Name + " - " + PageState.Page.Name;
        }

        // set page head content
        var content = "";
        var favicon = "favicon.ico";
        if (PageState.Site.FaviconFileId != null)
        {
            favicon = Utilities.FileUrl(PageState.Alias, PageState.Site.FaviconFileId.Value);
        }
        content += $"<link id=\"app-favicon\" rel=\"shortcut icon\" type=\"image/x-icon\" href=\"{favicon}\" />\n";
        content += PageState.Page.Meta ?? "";
        SiteState.Properties.HeadContent = content;

		DynamicComponent = builder =>
		{
			var themeType = Type.GetType(PageState.Page.ThemeType);
			builder.OpenComponent(0, themeType);
			builder.CloseComponent();
		};
	}

	protected override async Task OnAfterRenderAsync(bool firstRender)
	{
		var interop = new Interop(JsRuntime);

        // manage stylesheets for this page 
		string batch = DateTime.UtcNow.ToString("yyyyMMddHHmmssfff");
		var links = new List<object>();
		foreach (Resource resource in PageState.Page.Resources.Where(item => item.ResourceType == ResourceType.Stylesheet))
		{
			var prefix = "app-stylesheet-" + resource.Level.ToString().ToLower();
			var url = (resource.Url.Contains("://")) ? resource.Url : PageState.Alias.BaseUrl + resource.Url;
			links.Add(new { id = prefix + "-" + batch + "-" + (links.Count + 1).ToString("00"), rel = "stylesheet", href = url, type = "text/css", integrity = resource.Integrity ?? "", crossorigin = resource.CrossOrigin ?? "", insertbefore = prefix });
        }
        if (links.Any())
        {
            await interop.IncludeLinks(links.ToArray());
        }
		await interop.RemoveElementsById("app-stylesheet-page-", "", "app-stylesheet-page-" + batch + "-00");
		await interop.RemoveElementsById("app-stylesheet-module-", "", "app-stylesheet-module-" + batch + "-00");
	}
}