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conversion fix, bugfixes

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randogoth 2025-03-03 23:01:34 +02:00
parent 6eb21e5886
commit ab4accfc8c
1 changed files with 61 additions and 15 deletions
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76
lib/rugreefer.dart
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@ -35,26 +35,52 @@ class RugReefer {
}
}
Future<List<Map<String, dynamic>>> lookup(double latitude, double longitude, {double distanceThreshold = 10.0}) async {
final String geohash = GeoHasher().encode(latitude, longitude, precision: 4);
Future<Map<String, Map<String, List<String>>>> lookup(double latitude, double longitude, {double distanceThreshold = 10.0}) async {
final String geohash = GeoHasher().encode(longitude, latitude, precision: 4);
print("Generated geohash: $geohash");
final jsonMap = await loadJsonFromAssets(categoryMap);
print("Loaded JSON Map from Assets");
List<Map<String, dynamic>> rawData = kIsWeb
? await _lookupWeb(geohash, latitude, longitude, distanceThreshold)
: await _lookupFile(geohash, latitude, longitude, distanceThreshold);
try {
List<Map<String, dynamic>> rawData = kIsWeb
? await _lookupWeb(geohash, latitude, longitude, distanceThreshold)
: await _lookupFile(geohash, latitude, longitude, distanceThreshold);
return _processMetadata(rawData, jsonMap, latitude, longitude, distanceThreshold);
print("Raw Data from lookup: ${jsonEncode(rawData)}");
final processedData = _processMetadata(rawData, jsonMap, latitude, longitude, distanceThreshold);
print("Processed Data: ${jsonEncode(processedData)}");
return processedData;
} catch (e, stackTrace) {
print("Error in lookup: $e");
print("StackTrace: $stackTrace");
return {};
}
}
Future<List<Map<String, dynamic>>> _lookupFile(String geohash, double latitude, double longitude, double distanceThreshold) async {
await _initCacheDir();
final File cacheFile = File('${cacheDir?.path}/$geohash.geojson.gz');
print("Checking cache file: ${cacheFile.path}");
if (!cacheFile.existsSync() || await _isCacheExpired(geohash)) {
print("Cache file missing or expired, downloading...");
await _downloadGeoJson(geohash, cacheFile);
} else {
print("Cache file found, updating last access time");
await _updateLastAccessTime(geohash);
}
final String geoJsonStr = utf8.decode(GZipCodec().decode(cacheFile.readAsBytesSync()));
return jsonDecode(geoJsonStr)['features'];
print("Read from cache: ${geoJsonStr.length} characters");
// ✅ Explicitly cast to List<Map<String, dynamic>>
final List<dynamic> decodedJson = jsonDecode(geoJsonStr)['features'];
return decodedJson.cast<Map<String, dynamic>>();
}
Future<List<Map<String, dynamic>>> _lookupWeb(String geohash, double latitude, double longitude, double distanceThreshold) async {
@ -114,22 +140,29 @@ class RugReefer {
return jsonDecode(jsonString);
}
List<Map<String, dynamic>> _processMetadata(List<Map<String, dynamic>> features, Map<String, dynamic> jsonMap, double latitude, double longitude, double distanceThreshold) {
Map<String, Map<String, List<String>>> _processMetadata(
List<Map<String, dynamic>> features,
Map<String, dynamic> jsonMap,
double latitude,
double longitude,
double distanceThreshold) {
final Position point = Position(longitude, latitude);
Map<String, Map<String, List<String>>> groupedObjects = {};
Map<String, Map<String, List<String>>> groupedObjects = {"in": {}, "by": {}};
for (var feature in features) {
final geometry = feature['geometry'];
final metadata = Map<String, dynamic>.from(feature['properties']['tags'] ?? {})..removeWhere((_, v) => v == null);
String? mainKey;
// Determine spatial category: "in" (Polygon) or "by" (LineString)
switch (geometry['type']) {
case 'Polygon':
final polygon = Polygon(
coordinates: (geometry['coordinates'] as List)
.map((ring) => (ring as List)
.map((p) => Position(p[0].toDouble(), p[1].toDouble()))
.toList())
.map((p) => Position(p[0].toDouble(), p[1].toDouble()))
.toList())
.toList(),
);
if (booleanPointInPolygon(point, polygon)) mainKey = 'in';
@ -143,25 +176,38 @@ class RugReefer {
if (_isPointNearLine(Point(coordinates: point), line, distanceThreshold)) mainKey = 'by';
break;
}
if (mainKey == null) continue;
groupedObjects.putIfAbsent(mainKey, () => {});
for (var key in metadata.keys) {
var value = metadata[key];
for (var category in jsonMap.keys) {
var categoryMap = jsonMap[category];
if (categoryMap is Map && categoryMap.containsKey(key)) {
var rule = categoryMap[key];
if (rule is String || (rule is List && rule.contains(metadata[key])) || rule == true) {
if (rule is String && rule == value) {
groupedObjects[mainKey]!.putIfAbsent(category, () => []);
groupedObjects[mainKey]![category]!.add(metadata[key]);
groupedObjects[mainKey]![category]!.add(value);
} else if (rule is List && rule.contains(value)) {
groupedObjects[mainKey]!.putIfAbsent(category, () => []);
groupedObjects[mainKey]![category]!.add(value);
} else if (rule == true) {
groupedObjects[mainKey]!.putIfAbsent(category, () => []);
groupedObjects[mainKey]![category]!.add(value);
}
}
}
}
}
return groupedObjects.entries.map((entry) => {entry.key: entry.value}).toList();
return groupedObjects;
}
bool _isPointNearLine(Point point, LineString line, double distanceThreshold) {
for (final Position p in line.coordinates) {
if (distance(point, Point(coordinates: p), Unit.meters) <= distanceThreshold) {