Implementation
Future<String> getTransactionContent(String address, String endpoint) async {
final Completer<String> _completer = Completer<String>();
String _content = "";
TransactionResponse? transactionResponse = new TransactionResponse();
final Map<String, String> requestHeaders = {
'Content-type': 'application/json',
'Accept': 'application/json',
};
String _body =
'{"query":"query { transaction(address: \\"$address\\") { data { content }} }"}';
print(_body);
try {
http.Response responseHttp = await http.post(Uri.parse(endpoint + '/api'),
body: _body, headers: requestHeaders);
print(responseHttp.body);
if (responseHttp.statusCode == 200) {
transactionResponse = transactionResponseFromJson(responseHttp.body);
if (transactionResponse.data != null &&
transactionResponse.data!.transaction != null &&
transactionResponse.data!.transaction!.data != null) {
_content = transactionResponse.data!.transaction!.data!.content!;
}
}
} catch (e) {
print("error: " + e.toString());
}
_completer.complete(_content);
return _completer.future;
}