From c20e2def5bc1eb19f819d59d4a0b51d17172cdeb Mon Sep 17 00:00:00 2001
From: pietervdvn <pietervdvn@posteo.net>
Date: Thu, 22 Apr 2021 20:08:03 +0200
Subject: [PATCH] Load timestamp from geojson

---
 Logic/FeatureSource/GeoJsonSource.ts |  7 ++++++-
 scripts/generateCache.ts             | 11 +++++++----
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/Logic/FeatureSource/GeoJsonSource.ts b/Logic/FeatureSource/GeoJsonSource.ts
index 7f17fd8..1000f66 100644
--- a/Logic/FeatureSource/GeoJsonSource.ts
+++ b/Logic/FeatureSource/GeoJsonSource.ts
@@ -179,7 +179,12 @@ export default class GeoJsonSource implements FeatureSource {
                 }
                 self.seenids.add(feature.properties.id)
 
-                newFeatures.push({feature: feature, freshness: time})
+                let freshness : Date = time;
+                if(feature["_timestamp"] !== undefined){
+                    freshness = new Date(feature["_timestamp"])
+                }
+                
+                newFeatures.push({feature: feature, freshness: freshness})
             }
             console.log("Downloaded "+newFeatures.length+" new features and "+skipped+" already seen features from "+ url);
             
diff --git a/scripts/generateCache.ts b/scripts/generateCache.ts
index 7e626e4..8c205d6 100644
--- a/scripts/generateCache.ts
+++ b/scripts/generateCache.ts
@@ -156,10 +156,13 @@ async function postProcess(targetdir: string, r: TileRange, theme: LayoutConfig)
                     }
                 }
             }
-            const featuresFreshness = geojson.features.map(feature => ({
-                freshness: osmTime,
-                feature: feature
-            }));
+            const featuresFreshness = geojson.features.map(feature => {
+                feature["_timestamp"] = rawOsm.osm3s.timestamp_osm_base;
+                return ({
+                    freshness: osmTime,
+                    feature: feature
+                });
+            });
             // Extract the relationship information
             const relations = ExtractRelations.BuildMembershipTable(ExtractRelations.GetRelationElements(rawOsm))
             MetaTagging.addMetatags(featuresFreshness, relations, theme.layers);