Rilascia gestione completa progetti e aggiornamenti 0.4.0

Services/MapExportService.cs

@@ -135,11 +135,43 @@ public sealed class MapExportService
 
     private static byte[] BuildPdfReport(JsonElement features, string title)
     {
+        var paths = features.EnumerateArray()
+            .Where(feature => feature.TryGetProperty("geometry", out _))
+            .SelectMany(feature => PdfCoordinatePaths(feature.GetProperty("geometry")))
+            .Where(path => path.Count > 0)
+            .ToArray();
+        var points = paths.SelectMany(path => path).ToArray();
+        var minLon = points.Length == 0 ? 0 : points.Min(point => point.Lon);
+        var maxLon = points.Length == 0 ? 1 : points.Max(point => point.Lon);
+        var minLat = points.Length == 0 ? 0 : points.Min(point => point.Lat);
+        var maxLat = points.Length == 0 ? 1 : points.Max(point => point.Lat);
+        var lonSpan = Math.Max(0.0000001, maxLon - minLon);
+        var latSpan = Math.Max(0.0000001, maxLat - minLat);
+        const double mapLeft = 48, mapBottom = 438, mapWidth = 499, mapHeight = 330;
+        var scale = Math.Min(mapWidth / lonSpan, mapHeight / latSpan);
+        var drawing = new StringBuilder("0.08 0.44 0.37 RG 0.86 0.94 0.91 rg 1.4 w ");
+        foreach (var path in paths.Take(400))
+        {
+            for (var pointIndex = 0; pointIndex < path.Count; pointIndex++)
+            {
+                var x = mapLeft + (path[pointIndex].Lon - minLon) * scale;
+                var y = mapBottom + (path[pointIndex].Lat - minLat) * scale;
+                drawing.AppendFormat(CultureInfo.InvariantCulture, "{0:0.##} {1:0.##} {2} ", x, y, pointIndex == 0 ? "m" : "l");
+            }
+            drawing.Append("S ");
+        }
+        drawing.Append("0 0 0 RG 1 w 497 730 m 497 758 l S 497 758 m 491 746 l 503 746 l h f ");
+        var middleLatitude = (minLat + maxLat) / 2;
+        var widthMeters = lonSpan * 111_320 * Math.Cos(middleLatitude * Math.PI / 180);
+        var scaleMeters = Math.Max(1, NiceScaleDistance(widthMeters / 4));
+        var scalePixels = widthMeters <= 0 ? 80 : Math.Clamp(scaleMeters / widthMeters * mapWidth, 35, 150);
+        drawing.AppendFormat(CultureInfo.InvariantCulture, "48 422 m {0:0.##} 422 l S 48 418 m 48 426 l S {0:0.##} 418 m {0:0.##} 426 l S ", 48 + scalePixels);
         var lines = new List<string>
         {
             title,
             $"Rapporto LME Mappe Catastali - {DateTime.Now:dd/MM/yyyy HH:mm}",
             $"Oggetti: {features.GetArrayLength()}",
+            $"Scala grafica: {scaleMeters:0} m | Nord: alto pagina",
             ""
         };
         var index = 1;
@@ -148,14 +180,17 @@ public sealed class MapExportService
             var properties = feature.TryGetProperty("properties", out var value) ? value : default;
             var category = GetString(properties, "_lmeCategory") ?? "drawing";
             var geometry = feature.TryGetProperty("geometry", out var geo) ? geo.GetProperty("type").GetString() : "-";
-            lines.Add($"{index++}. {FeatureName(properties, category)} [{category}, {geometry}]");
+            var sheet = GetString(properties, "foglio") ?? GetString(properties, "FOGLIO");
+            var parcel = GetString(properties, "particella") ?? GetString(properties, "PARTICELLA") ?? GetString(properties, "LABEL");
+            var reference = string.Join(" ", new[] { sheet is null ? null : $"F.{sheet}", parcel is null ? null : $"P.{parcel}" }.Where(item => item is not null));
+            lines.Add($"{index++}. {FeatureName(properties, category)} [{category}, {geometry}] {reference}".TrimEnd());
         }
-        var content = new StringBuilder("BT /F1 16 Tf 48 790 Td ");
-        foreach (var line in lines.Take(42))
+        var content = drawing.Append("BT /F1 12 Tf 48 810 Td ");
+        foreach (var line in lines.Take(21))
         {
             var safe = line.Replace("\\", "\\\\").Replace("(", "\\(").Replace(")", "\\)")
                 .Select(character => character <= 255 ? character : '?').ToArray();
-            content.Append('(').Append(safe).Append(") Tj 0 -18 Td ");
+            content.Append('(').Append(safe).Append(") Tj 0 -16 Td ");
         }
         content.Append("ET");
         var stream = Encoding.Latin1.GetBytes(content.ToString());
@@ -183,6 +218,36 @@ public sealed class MapExportService
         return output.ToArray();
     }
 
+    private static double NiceScaleDistance(double value)
+    {
+        if (value <= 0) return 1;
+        var power = Math.Pow(10, Math.Floor(Math.Log10(value)));
+        var normalized = value / power;
+        var nice = normalized >= 5 ? 5 : normalized >= 2 ? 2 : 1;
+        return nice * power;
+    }
+
+    private static IEnumerable<List<(double Lon, double Lat)>> PdfCoordinatePaths(JsonElement geometry)
+    {
+        if (!geometry.TryGetProperty("type", out var typeElement) || !geometry.TryGetProperty("coordinates", out var coordinates)) yield break;
+        var type = typeElement.GetString();
+        if (type == "Point") { yield return [PdfPoint(coordinates)]; yield break; }
+        if (type == "LineString") { yield return coordinates.EnumerateArray().Select(PdfPoint).ToList(); yield break; }
+        if (type == "Polygon" || type == "MultiLineString")
+        {
+            foreach (var path in coordinates.EnumerateArray()) yield return path.EnumerateArray().Select(PdfPoint).ToList();
+            yield break;
+        }
+        if (type == "MultiPolygon")
+        {
+            foreach (var polygon in coordinates.EnumerateArray())
+            foreach (var path in polygon.EnumerateArray()) yield return path.EnumerateArray().Select(PdfPoint).ToList();
+        }
+    }
+
+    private static (double Lon, double Lat) PdfPoint(JsonElement coordinate) =>
+        (coordinate[0].GetDouble(), coordinate[1].GetDouble());
+
     private static string BuildKml(JsonElement features, string documentName)
     {
         var document = new XElement(Kml + "Document",