packageSupportsPlatform function

Future<List<String>> packageSupportsPlatform(String packageName)

Fetches the supported platforms for a given package from its pub.dev page. Returns a list of supported platforms in uppercase.

Implementation

Future<List<String>> packageSupportsPlatform(String packageName) async {
  // Fetch the package's page from pub.dev.
  var response = await http
      .get(Uri.parse("https://pub.dev/packages/$packageName"))
      .timeout(
    const Duration(seconds: 3),
    onTimeout: () {
      print("timeout");
      throw Exception("Timeout");
    },
  );

  // If the response is successful (status code 200), parse the HTML to extract platform information.
  if (response.statusCode == 200) {
    var document = parse(response.body);
    List<Element> tagBadgeDiv = document.querySelectorAll('.-pub-tag-badge');

    // Check if the tag badge div exists and extract the supported platforms from it.
    if (tagBadgeDiv.isNotEmpty) {
      List<Element> platformElements =
          tagBadgeDiv[1].querySelectorAll('.tag-badge-sub');
      List<String> supportedPlatforms = [];
      for (Element platformElement in platformElements) {
        supportedPlatforms.add(platformElement.text.toUpperCase());
      }
      return supportedPlatforms;
    }
  }

  // If the package page doesn't provide platform information or there was an error, return an empty list.
  return [];
}