MESSENGER-5379 dynamic location attribution from style.json

RiotSwiftUI/Modules/LocationSharing/MapView/View/LocationSharingMapView.swift

@@ -68,6 +68,9 @@ struct LocationSharingMapView: UIViewRepresentable {
     
     /// Called when the user pan on the map
     var userDidPan: (() -> Void)?
+    
+    // bwi #5379: for copyright attribution
+    var attributionsChanged: ((LocationSharingAttribution) -> Void)?
 
     // MARK: - UIViewRepresentable
     
@@ -154,6 +157,23 @@ extension LocationSharingMapView {
             return nil
         }
         
+        func mapView(_ mapView: MGLMapView, didFinishLoading style: MGLStyle) {
+            // bwi #5379: set copyright to info from style json if available. Needs reevaluation if there is more than one source
+            
+            var attribution = LocationSharingAttribution()
+            
+            for source in style.sources {
+                if let tileSource = source as? MGLRasterTileSource {
+                    for attributionInfo in tileSource.attributionInfos {
+                        attribution.copyrightTexts.append(attributionInfo.title.plainTextString())
+                        attribution.copyrightLinks.append(attributionInfo.url)
+                    }
+                }
+            }
+            
+            locationSharingMapView.attributionsChanged?(attribution)
+        }
+        
         func mapViewDidFailLoadingMap(_ mapView: MGLMapView, withError error: Error) {
             locationSharingMapView.errorSubject.send(.failedLoadingMap)
         }