various fixes: ocean GPS, ~0 GPS, delayed op feedback

android/app/src/main/kotlin/deckers/thibault/aves/channel/calls/MetadataHandler.kt

@@ -353,10 +353,9 @@ class MetadataHandler(private val context: Context) : MethodCallHandler {
             if (locationString != null) {
                 val matcher = Metadata.VIDEO_LOCATION_PATTERN.matcher(locationString)
                 if (matcher.find() && matcher.groupCount() >= 2) {
-                    // keep `0.0` as `0.0`, not `0`
+                    val latitude = matcher.group(1)?.toDoubleOrNull()
-                    val latitude = matcher.group(1)?.toDoubleOrNull() ?: 0.0
+                    val longitude = matcher.group(2)?.toDoubleOrNull()
-                    val longitude = matcher.group(2)?.toDoubleOrNull() ?: 0.0
+                    if (latitude != null && longitude != null) {
-                    if (latitude != 0.0 || longitude != 0.0) {
                         metadataMap[KEY_LATITUDE] = latitude
                         metadataMap[KEY_LONGITUDE] = longitude
                     }

lib/model/image_entry.dart

@@ -375,12 +375,17 @@ class ImageEntry {
           : call());
       if (addresses != null && addresses.isNotEmpty) {
         final address = addresses.first;
+        final cc = address.countryCode;
+        final cn = address.countryName;
+        final aa = address.adminArea;
         addressDetails = AddressDetails(
           contentId: contentId,
-          countryCode: address.countryCode,
+          countryCode: cc,
-          countryName: address.countryName,
+          countryName: cn,
-          adminArea: address.adminArea,
+          adminArea: aa,
-          locality: address.locality,
+          // if country & admin fields are null, it is likely the ocean,
+          // which is identified by `featureName` but we default to the address line anyway
+          locality: address.locality ?? (cc == null && cn == null && aa == null ? address.addressLine : null),
         );
       }
     } catch (error, stackTrace) {

lib/model/image_metadata.dart

@@ -34,9 +34,11 @@ class CatalogMetadata {
   bool isFlipped;
   int rotationDegrees;
   final String mimeType, xmpSubjects, xmpTitleDescription;
-  final double latitude, longitude;
+  double latitude, longitude;
   Address address;
 
+  static const double _precisionErrorTolerance = 1e-9;
+
   CatalogMetadata({
     this.contentId,
     this.mimeType,
@@ -48,10 +50,15 @@ class CatalogMetadata {
     this.xmpTitleDescription,
     double latitude,
     double longitude,
-  })  
+  }) {
-  // Geocoder throws an IllegalArgumentException when a coordinate has a funky values like 1.7056881853375E7
+    // Geocoder throws an `IllegalArgumentException` when a coordinate has a funky values like `1.7056881853375E7`
-  : latitude = latitude == null || latitude < -90.0 || latitude > 90.0 ? null : latitude,
+    // We also exclude zero coordinates, taking into account precision errors (e.g. {5.952380952380953e-11,-2.7777777777777777e-10}),
-        longitude = longitude == null || longitude < -180.0 || longitude > 180.0 ? null : longitude;
+    // but Flutter's `precisionErrorTolerance` (1e-10) is slightly too lenient for this case.
+    if (latitude != null && longitude != null && (latitude.abs() > _precisionErrorTolerance || longitude.abs() > _precisionErrorTolerance)) {
+      this.latitude = latitude < -90.0 || latitude > 90.0 ? null : latitude;
+      this.longitude = longitude < -180.0 || longitude > 180.0 ? null : longitude;
+    }
+  }
 
   CatalogMetadata copyWith({
     @required int contentId,

lib/widgets/common/action_mixins/feedback.dart

@@ -56,7 +56,7 @@ mixin FeedbackMixin {
               stream: opStream,
               builder: (context, snapshot) {
                 Widget child = SizedBox.shrink();
-                if (!snapshot.hasError && snapshot.connectionState == ConnectionState.active) {
+                if (!snapshot.hasError) {
                   final percent = processed.length.toDouble() / selection.length;
                   child = CircularPercentIndicator(
                     percent: percent,