detectFileType function

FileType? detectFileType(String path)

Detect the file type of the given file path.

The function supports the following file types:

• image: .jpg, .jpeg, .png, .gif, .bmp, .tiff
• video: .mp4, .avi, .mov, .mkv
• pdf: .pdf
• word: .doc, .docx
• excel: .xls, .xlsx
• csv: .csv
• ppt: .ppt, .pptx
• text: .txt, .md

Implementation

FileType? detectFileType(String path) {
  // For remote URLs like https://host/file.pdf?token=..., inspect uri.path.
  final Uri? uri = Uri.tryParse(path);
  final String normalizedPath =
      (uri != null && uri.hasScheme && uri.path.isNotEmpty) ? uri.path : path;
  final String extension = p.extension(normalizedPath).toLowerCase();

  if (<String>['.jpg', '.jpeg', '.png', '.gif', '.bmp', '.tiff']
      .contains(extension)) {
    return FileType.image;
  } else if (<String>['.mp4', '.avi', '.mov', '.mkv'].contains(extension)) {
    return FileType.video;
  } else if (extension == '.pdf') {
    return FileType.pdf;
  } else if (<String>['.doc', '.docx'].contains(extension)) {
    return FileType.word;
  } else if (<String>['.xls', '.xlsx'].contains(extension)) {
    return FileType.excel;
  } else if (extension == '.csv') {
    return FileType.csv;
  } else if (<String>['.ppt', '.pptx'].contains(extension)) {
    return FileType.ppt;
  } else if (<String>['.txt'].contains(extension)) {
    return FileType.text;
  } else if (<String>['.md'].contains(extension)) {
    return FileType.md;
  } else {
    return null;
  }
}