getLensMessage method

Future<Map<String, String>> getLensMessage(String address)

Implementation

Future<Map<String, String>> getLensMessage(String address) async {
  try {
    final Map<String, String> headers = {'Content-Type': 'application/json'};
    final Map<String, dynamic> requestBody = {
      'query': '''
    query Challenge(\$request: ChallengeRequest!) {
      challenge(request: \$request) { text }
    }
  ''',
      'variables': {
        'request': {
          'address': address,
        },
      },
    };

    final response = await http.post(
      Uri.parse('https://api.lens.dev/'),
      headers: headers,
      body: jsonEncode(requestBody),
    );
    if (response.statusCode == 200) {
      final Map<String, dynamic> responseData = jsonDecode(response.body);
      final String text = responseData['data']['challenge']['text'] as String;
      return {'message': text};
    } else {
      throw Exception('failed to get lens message');
    }
  } catch (error) {
    throw Exception('error getting lens message => $error');
  }
}