buildDynamicVersionMap function

Map<String, String> buildDynamicVersionMap(List<Map<String, dynamic>> rawSpecs)

Builds a map of base activity type -> highest versioned activity type by scanning all string values in the swagger JSON for ACTIVITY_TYPE_* patterns.

Implementation

Map<String, String> buildDynamicVersionMap(
    List<Map<String, dynamic>> rawSpecs) {
  final allActivityTypes = <String>{};

  void collect(dynamic value) {
    if (value is String && value.startsWith('ACTIVITY_TYPE_')) {
      allActivityTypes.add(value);
    } else if (value is Map) {
      for (final v in value.values) collect(v);
    } else if (value is List) {
      for (final v in value) collect(v);
    }
  }

  for (final spec in rawSpecs) {
    collect(spec);
  }

  final baseToHighest = <String, (int, String)>{};
  final versionPattern = RegExp(r'^(.+)_V(\d+)$');

  for (final activityType in allActivityTypes) {
    final match = versionPattern.firstMatch(activityType);
    if (match != null) {
      final base = match.group(1)!;
      final version = int.parse(match.group(2)!);
      if (!baseToHighest.containsKey(base) ||
          version > baseToHighest[base]!.$1) {
        baseToHighest[base] = (version, activityType);
      }
    }
  }

  return baseToHighest.map((base, record) => MapEntry(base, record.$2));
}