using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Rendering;
using FastReport.Web.Blazor.Export;
#if !WASM
using FastReport.Web.Infrastructure;
#endif

namespace FastReport.Web.Blazor.Components
{
    public partial class ExportComponent : Microsoft.AspNetCore.Components.ComponentBase
    {

        [Parameter]
        public WebReport WebReport { get; set; }

        /// Main function
        protected override void BuildRenderTree(RenderTreeBuilder builder)
        {
            //Utils.Config.EnableScriptSecurity = false;

            if(WebReport.Report.IsPrepared)
            {
                int pageWidth = (int)Math.Ceiling(WebReport.GetReportPageWidthInPixels() * WebReport.Zoom);
                //int pageHeight = (int)Math.Ceiling(WebReport.GetReportPageHeightInPixels() * WebReport.Zoom);
                WebReport.ReportMaxWidth = pageWidth;

                using (BlazorExport blazor = new BlazorExport())
                {
                    WebReport.PictureCache.Clear();

                    blazor.StylePrefix = $"fr{WebReport.ID}";
                    blazor.Pictures = WebReport.Pictures;
                    blazor.EmbedPictures = WebReport.EmbedPictures;
                    blazor.OnClick += ProcessClick;
                    blazor.EnableMargins = WebReport.EnableMargins;
                    blazor.Zoom = WebReport.Zoom;

                    blazor.PageNumbers = WebReport.SinglePage ? "" : (WebReport.CurrentPageIndex + 1).ToString();
#if !WASM
                    var routeOptions = FastReportGlobal.FastReportOptions;
                    blazor.WebImagePrefix = WebUtils.ToUrl(routeOptions.RoutePathBaseRoot,
                        routeOptions.RouteBasePath,
                        $"preview.getPicture?reportId={WebReport.ID}&pictureId=");
#endif
                    blazor.SinglePage = WebReport.SinglePage;
                    blazor.CurPage = WebReport.CurrentPageIndex;

                    blazor.Export(WebReport.Report, builder);

                    if (!blazor.EmbedPictures)
                        WebReport.CacheHtmlPictures(blazor, blazor.CurPage);

                }
            }
        }

        private void ProcessClick(object sender, OnClickEventArgs args)
        {
            bool update = WebReport.ProcessClick(sender, args);

            // call Re-render
            if(update)
                WebReport.OnUpdate();
        }

    }
}