handleUpload method

Implementation

Future<void> handleUpload(BuildContext context) async {
  if (state.uploadFile == null) return;

  try {
    state = state.copyWith(uploadInProgress: true, uploadDone: false);

    final file = File(state.uploadFile!);
    String fileContent;

    // For text files, we directly read the content.
    // For binary files, we encode them into base64 format.

    if (isTextFile(state.uploadFile!)) {
      fileContent = await file.readAsString();
    } else {
      final bytes = await file.readAsBytes();
      fileContent = base64Encode(bytes);
    }

    // Sanitise file name and append encryption extension.

    String sanitizedFileName = path
        .basename(state.uploadFile!)
        .replaceAll(RegExp(r'[^a-zA-Z0-9._-]'), '_')
        .replaceAll(RegExp(r'\.enc\.ttl$'), '');

    final remoteFileName = '$sanitizedFileName.enc.ttl';
    final cleanFileName = sanitizedFileName;

    // Extract the subdirectory path.

    String? subPath = state.currentPath?.replaceFirst(basePath, '').trim();
    String uploadPath = subPath == null || subPath.isEmpty
        ? remoteFileName
        : '${subPath.startsWith("/") ? subPath.substring(1) : subPath}/$remoteFileName';

    // debugPrint('Upload path: $uploadPath');

    if (!context.mounted) return;

    // Upload file with encryption.

    final result = await writePod(
      uploadPath,
      fileContent,
      context,
      const Text('Upload'),
      encrypted: true,
    );

    state = state.copyWith(
      uploadDone: result == SolidFunctionCallStatus.success,
      uploadInProgress: false,
      remoteFileName: remoteFileName,
      cleanFileName: cleanFileName,
    );

    if (result == SolidFunctionCallStatus.success) {
      // Show success message.

      if (context.mounted) {
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(
            content: Text('File uploaded successfully'),
            backgroundColor: Theme.of(context).colorScheme.tertiary,
          ),
        );
        // Call the refresh callback to update the browser.

        _refreshCallback?.call();
      }
    } else if (context.mounted) {
      showAlert(
        context,
        'Upload failed - please check your connection and permissions.',
      );
    }
  } catch (e) {
    if (context.mounted) {
      showAlert(context, 'Upload error: ${e.toString()}');
      debugPrint('Upload error: $e');
    }
    state = state.copyWith(uploadInProgress: false);
  }
}