feat: add /api/chart/v2/{isin} endpoint and register IChartDataServiceV2

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

CertReports.Syncfusion/Controllers/ChartController.cs

@@ -20,11 +20,16 @@ namespace CertReports.Syncfusion.Controllers;
 public class ChartController : ControllerBase
 {
     private readonly IChartDataService _chartDataService;
+    private readonly IChartDataServiceV2 _chartDataServiceV2;
     private readonly ILogger<ChartController> _logger;
 
-    public ChartController(IChartDataService chartDataService, ILogger<ChartController> logger)
+    public ChartController(
+        IChartDataService chartDataService,
+        IChartDataServiceV2 chartDataServiceV2,
+        ILogger<ChartController> logger)
     {
         _chartDataService = chartDataService;
+        _chartDataServiceV2 = chartDataServiceV2;
         _logger = logger;
     }
 
@@ -77,6 +82,55 @@ public class ChartController : ControllerBase
         }
     }
 
+    /// <summary>
+    /// Endpoint V2: grafico migliorato con titolo, colori distinti, label sulle linee e legenda in basso.
+    /// Richiede SP cedlab_Chart_UL1 e cedlab_Chart_AllSeriesV2 nel DB.
+    /// </summary>
+    [HttpGet("v2/{isin}")]
+    public async Task<IActionResult> GenerateChartV2(
+        string isin,
+        [FromQuery] int width = 1100,
+        [FromQuery] int height = 700,
+        [FromQuery] string format = "png")
+    {
+        if (string.IsNullOrWhiteSpace(isin))
+            return BadRequest("ISIN non valido.");
+
+        width  = Math.Clamp(width,  400, 2000);
+        height = Math.Clamp(height, 300, 1500);
+
+        try
+        {
+            var chartData = await _chartDataServiceV2.GetChartDataV2Async(isin);
+
+            if (chartData == null || chartData.SeriesPoints.Count == 0)
+            {
+                return NotFound(new
+                {
+                    status  = "KO",
+                    message = $"Nessun dato per il grafico V2 di {isin} (meno di 30 prezzi EOD?).",
+                });
+            }
+
+            byte[] pngBytes = SkiaChartRendererV2.RenderToPng(chartData, width, height);
+
+            if (format.Equals("pdf", StringComparison.OrdinalIgnoreCase))
+            {
+                byte[] pdfBytes = WrapPngInPdf(pngBytes);
+                Response.Headers.Append("Content-Disposition", $"inline; filename=chart_v2_{isin}.pdf");
+                return File(pdfBytes, "application/pdf");
+            }
+
+            Response.Headers.Append("Content-Disposition", $"inline; filename=chart_v2_{isin}.png");
+            return File(pngBytes, "image/png");
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Errore generazione chart V2 per ISIN {Isin}", isin);
+            return StatusCode(500, new { status = "KO", message = "Errore nella generazione del grafico V2." });
+        }
+    }
+
     private static byte[] WrapPngInPdf(byte[] pngBytes)
     {
         var doc = new PdfDocument();

CertReports.Syncfusion/Program.cs

@@ -41,6 +41,7 @@ builder.Services.AddHealthChecks()
 // Registra i servizi applicativi
 builder.Services.AddScoped<ICertificateDataService, CertificateDataService>();
 builder.Services.AddScoped<IChartDataService, ChartDataService>();
+builder.Services.AddScoped<IChartDataServiceV2, ChartDataServiceV2>();
 builder.Services.AddScoped<IPdfSectionRenderer, AnagraficaSectionRenderer>();
 builder.Services.AddScoped<IPdfSectionRenderer, EventiSectionRenderer>();
 builder.Services.AddScoped<IPdfSectionRenderer, ScenarioSectionRenderer>();