feat: add FundChartSectionRenderer (chart PNG wrapped as PDF landscape page)

CertReports.Syncfusion/Services/Implementations/FundChartSectionRenderer.cs

@@ -0,0 +1,52 @@
+using CertReports.Syncfusion.Services.Interfaces;
+using Syncfusion.Drawing;
+using Syncfusion.Pdf;
+using Syncfusion.Pdf.Graphics;
+
+namespace CertReports.Syncfusion.Services.Implementations;
+
+public class FundChartSectionRenderer
+{
+    private readonly IFundDataService _dataService;
+    private readonly ILogger<FundChartSectionRenderer> _logger;
+
+    public FundChartSectionRenderer(IFundDataService dataService,
+        ILogger<FundChartSectionRenderer> logger)
+    {
+        _dataService = dataService;
+        _logger      = logger;
+    }
+
+    public async Task<PdfDocument?> RenderAsync(string isin, string instrumentName)
+    {
+        try
+        {
+            var points   = await _dataService.GetChartPricesAsync(isin);
+            var pngBytes = FundSkiaChartRenderer.Render(points, instrumentName,
+                width: 1100, height: 650);
+            return WrapInPdf(pngBytes);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Errore FundChartSectionRenderer per ISIN {Isin}", isin);
+            return null;
+        }
+    }
+
+    private static PdfDocument WrapInPdf(byte[] pngBytes)
+    {
+        var doc = new PdfDocument();
+        doc.PageSettings.Size        = PdfPageSize.A4;
+        doc.PageSettings.Orientation = PdfPageOrientation.Landscape;
+        doc.PageSettings.Margins.All = 20;
+        var page = doc.Pages.Add();
+        var g    = page.Graphics;
+        float w  = page.GetClientSize().Width;
+        float h  = page.GetClientSize().Height;
+
+        using var imgStream = new MemoryStream(pngBytes);
+        var pdfImage = PdfImage.FromStream(imgStream);
+        g.DrawImage(pdfImage, new RectangleF(0, 0, w, h));
+        return doc;
+    }
+}