HTM-1160: Allow configuration of template for feature type

src/main/java/org/tailormap/api/configuration/dev/PopulateTestData.java

@@ -519,7 +519,8 @@
                                   new GeoServiceLayerSettings()
                                       .attribution(map5Attr.getAttribution())
                                       .hiDpiDisabled(false)
-                                      .hiDpiMode(TileLayerHiDpiMode.SUBSTITUTELAYERSHOWNEXTZOOMLEVEL)
+                                      .hiDpiMode(
+                                          TileLayerHiDpiMode.SUBSTITUTELAYERSHOWNEXTZOOMLEVEL)
                                       .hiDpiSubstituteLayer("map5topo_hq"),
                               "map5topo_gray", map5Attr,
                               "map5topo_simple", map5Attr,
@@ -1062,7 +1063,8 @@
       root.setChildrenIds(childrenIds);
       app.getSettings()
           .putLayerSettingsItem("lyr:map5:map5topo", new AppLayerSettings().title("Map5"))
-          .putLayerSettingsItem("lyr:map5:map5topo_simple", new AppLayerSettings().title("Map5 simple"));
+          .putLayerSettingsItem(
+              "lyr:map5:map5topo_simple", new AppLayerSettings().title("Map5 simple"));
       app.getContentRoot()
           .addBaseLayerNodesItem(
               new AppTreeLayerNode()

src/main/java/org/tailormap/api/controller/FeaturesController.java

@@ -60,6 +60,7 @@
 import org.tailormap.api.persistence.json.AppLayerSettings;
 import org.tailormap.api.persistence.json.AppTreeLayerNode;
 import org.tailormap.api.persistence.json.AttributeSettings;
+import org.tailormap.api.persistence.json.FeatureTypeTemplate;
 import org.tailormap.api.persistence.json.GeoServiceLayer;
 import org.tailormap.api.persistence.json.TMAttributeDescriptor;
 import org.tailormap.api.persistence.json.TMAttributeType;
@@ -460,6 +461,10 @@
     } finally {
       featureSource.getDataStore().dispose();
     }
+    FeatureTypeTemplate ftt = tmFeatureType.getSettings().getTemplate();
+    if (ftt != null) {
+      featuresResponse.setTemplate(ftt.getTemplate());
+    }
     if (addFields) {
       configuredAttributes.values().stream()
           .map(

src/main/resources/openapi/persistence-schemas.yaml

@@ -242,6 +242,8 @@ components:
         - attributeSettings
         - readOnlyAttributes
       properties:
+        template:
+          $ref: '#/components/schemas/FeatureTypeTemplate'
         attributeOrder:
           description: Reordering of the attributes by attribute names. Attributes in the feature
             type that are not in this array should still be shown; either after the attribute that
@@ -266,6 +268,17 @@ components:
           additionalProperties:
             $ref: '#/components/schemas/AttributeSettings'
 
+    FeatureTypeTemplate:
+      type: object
+      description: Template/description for a feature. Will replace placeholders by attribute values in the viewer
+      properties:
+        template:
+          type: string
+        markupLanguage:
+          type: string
+        templateLanguage:
+          type: string
+
     AttributeSettings:
       properties:
         title:

src/main/resources/openapi/viewer-api.yaml

@@ -244,6 +244,10 @@ components:
           minLength: 0
           items:
             $ref: './viewer-schemas.yaml#/components/schemas/ColumnMetadata'
+        template:
+          description: Template/description for a feature. Will replace placeholders by attribute values in the viewer
+          type: string
+          nullable: true
       example:
         total: 400
         page: 5

src/test/java/org/tailormap/api/controller/FeaturesControllerIntegrationTest.java

@@ -275,6 +275,7 @@ private static ResultMatcher[] provinciesWFSResultMatchers() {
       jsonPath("$.features[0].attributes.fuuid").doesNotExist(),
       jsonPath("$.columnMetadata").isArray(),
       jsonPath("$.columnMetadata").isNotEmpty(),
+      jsonPath("$.template").isEmpty(),
       jsonPath("$.columnMetadata[?(@.key == 'naam')].alias").value("Naam"),
       jsonPath("$.columnMetadata[?(@.key == 'identificatie')].key").isEmpty(),
       jsonPath("$.columnMetadata[?(@.key == 'ligtInLandCode')].key").isEmpty(),