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import 'package:http/http.dart' as http;
import 'dart:convert';
class UriUtility {
static bool isURL(String url) {
// Validate if the URL string is empty, or contains spaces or invalid characters
if (url.isEmpty || RegExp(r'[\s<>]').hasMatch(url)) {
print('URL is either empty or contains spaces/invalid characters.');
return false;
}
// Check for 'mailto:' at the start of the URL
if (url.startsWith('mailto:')) {
print('URL starts with "mailto:".');
return false;
}
// Try to parse the URL, return false if parsing fails
Uri? uri;
try {
uri = Uri.parse(url);
} catch (e) {
print('URL parsing failed: $e');
return false;
}
// Validate the URL has a scheme (protocol) and host
if (uri.scheme.isEmpty || uri.host.isEmpty) {
print('URL is missing a scheme (protocol) or host.');
return false;
}
// Check if the URI has user info, which is not a common case for a valid HTTP/HTTPS URL
if (uri.hasAuthority &&
uri.userInfo.contains(':') &&
uri.userInfo.split(':').length > 2) {
print('URL contains invalid user info.');
return false;
}
// Validate the port number if exists
if (uri.hasPort && (uri.port <= 0 || uri.port > 65535)) {
print('URL contains an invalid port number.');
return false;
}
print('URL is valid.');
return true;
}
Future<bool> isValidGitHubRepo(String repoUrl) async {
var uri = Uri.parse(repoUrl);
if (uri.host != 'github.com') {
return false;
}
var segments = uri.pathSegments;
if (segments.length < 2) {
return false;
}
var user = segments[0];
var repo = segments[1];
var apiUri = Uri.https('api.github.com', '/repos/$user/$repo');
var response = await http.get(apiUri);
if (response.statusCode != 200) {
return false;
}
var data = json.decode(response.body);
return data is Map && data['full_name'] == '$user/$repo';
}
}
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