trackBulkFileChanges method

AttributionState trackBulkFileChanges({ required AttributionState attrState, required List<FileChange> changes, })

Track multiple file changes in bulk, mutating a single Map copy.

Implementation

AttributionState trackBulkFileChanges({
  required AttributionState attrState,
  required List<FileChange> changes,
}) {
  final newFileStates = Map<String, FileAttributionState>.from(
    attrState.fileStates,
  );

  for (final change in changes) {
    final effectiveMtime =
        change.mtime ?? DateTime.now().millisecondsSinceEpoch;

    if (change.type == 'deleted') {
      final normalizedPath = normalizeFilePath(change.path);
      final existingState = newFileStates[normalizedPath];
      final existingContribution = existingState?.neomageContribution ?? 0;
      final deletedChars = change.oldContent.length;

      newFileStates[normalizedPath] = FileAttributionState(
        contentHash: '',
        neomageContribution: existingContribution + deletedChars,
        mtime: effectiveMtime,
      );
    } else {
      final newFileState = _computeFileModificationState(
        existingFileStates: newFileStates,
        filePath: change.path,
        oldContent: change.oldContent,
        newContent: change.newContent,
        mtime: effectiveMtime,
      );
      if (newFileState != null) {
        final normalizedPath = normalizeFilePath(change.path);
        newFileStates[normalizedPath] = newFileState;
      }
    }
  }

  return attrState.copyWith(fileStates: newFileStates);
}