UHF-12838: Add map_url on sync

Author: sundflux

conf/cmi/search_api.index.mobilenote_data.yml

@@ -37,6 +37,11 @@ field_settings:
     datasource_id: mobilenote_data_source
     property_path: geometry
     type: geo_shape
+  map_url:
+    label: 'Map URL'
+    datasource_id: mobilenote_data_source
+    property_path: map_url
+    type: string
   notes:
     label: Notes
     datasource_id: mobilenote_data_source

public/modules/custom/helfi_kymp_content/src/MobileNoteDataService.php

@@ -232,6 +232,7 @@ protected function transformFeature(array $feature): MobileNoteData {
     // Convert geometry to GeoJSON object.
     if (!empty($geometry['coordinates'])) {
       $item['geometry'] = $this->convertGeometry($geometry);
+      $item['map_url'] = $this->buildMapUrl($geometry['coordinates']);
     }
 
     $dataDefinition = $this->typedDataManager->createDataDefinition('mobilenote_data');
@@ -310,4 +311,66 @@ protected function convertGeometry(array $geometry): object {
     ];
   }
 
+  /**
+   * Builds a kartta.hel.fi map URL from EPSG:3879 coordinates.
+   *
+   * Buffers the LineString into a Polygon (10m) and generates a WKT-based URL.
+   *
+   * @param array $coordinates
+   *   Array of [x, y] coordinate pairs in EPSG:3879.
+   *
+   * @return string
+   *   The kartta.hel.fi URL.
+   */
+  protected function buildMapUrl(array $coordinates): string {
+    $buffer = 10;
+
+    // Build perpendicular offset polygon from the LineString.
+    $left = [];
+    $right = [];
+    $count = count($coordinates);
+
+    for ($i = 0; $i < $count - 1; $i++) {
+      $dx = $coordinates[$i + 1][0] - $coordinates[$i][0];
+      $dy = $coordinates[$i + 1][1] - $coordinates[$i][1];
+      $len = sqrt($dx * $dx + $dy * $dy);
+      if ($len == 0) {
+        continue;
+      }
+      // Perpendicular unit vector.
+      $nx = -$dy / $len * $buffer;
+      $ny = $dx / $len * $buffer;
+
+      $left[] = [round($coordinates[$i][0] + $nx, 2), round($coordinates[$i][1] + $ny, 2)];
+      $left[] = [round($coordinates[$i + 1][0] + $nx, 2), round($coordinates[$i + 1][1] + $ny, 2)];
+      $right[] = [round($coordinates[$i][0] - $nx, 2), round($coordinates[$i][1] - $ny, 2)];
+      $right[] = [round($coordinates[$i + 1][0] - $nx, 2), round($coordinates[$i + 1][1] + $ny, 2)];
+    }
+
+    // Close the polygon: left side forward, right side reversed.
+    $ring = array_merge($left, array_reverse($right));
+    $ring[] = $ring[0];
+
+    // Build WKT.
+    $points = array_map(fn($p) => $p[0] . ' ' . $p[1], $ring);
+    $wkt = 'POLYGON ((' . implode(', ', $points) . '))';
+
+    // Calculate center point.
+    $sumX = $sumY = 0;
+    foreach ($coordinates as $coord) {
+      $sumX += $coord[0];
+      $sumY += $coord[1];
+    }
+    $centerE = round($sumX / $count);
+    $centerN = round($sumY / $count);
+
+    // Build URL. rawurlencode uses %20 for spaces (required by kartta.hel.fi).
+    return sprintf(
+      'https://kartta.hel.fi/?e=%d&n=%d&r=2&l=Karttasarja&geom=%s',
+      $centerE,
+      $centerN,
+      rawurlencode($wkt)
+    );
+  }
+
 }

public/modules/custom/helfi_kymp_content/src/Plugin/DataType/MobileNoteData.php

@@ -46,6 +46,7 @@ public static function propertyDefinitions(): array {
       'phone' => ['type' => 'string', 'label' => 'Phone', 'desc' => 'Contact phone number'],
       'street_names' => ['type' => 'any', 'label' => 'Street names', 'desc' => 'Enriched street names'],
       'geometry' => ['type' => 'any', 'label' => 'Geometry', 'desc' => 'GeoJSON geometry for geo queries'],
+      'map_url' => ['type' => 'string', 'label' => 'Map URL', 'desc' => 'Pre-built kartta.hel.fi link'],
     ];
 
     foreach ($fields as $key => $info) {