invokeAPI method
Implementation
Future<Response> invokeAPI(
String path,
String method,
List<QueryParam> queryParams,
Object? body,
Map<String, String> headerParams,
Map<String, String> formParams,
String? contentType,
) async {
String basePath = (env == Environment.PRODUCTION)
? "https://suggest.dxpapi.com/api/v2"
: "https://staging-suggest.dxpapi.com/api/v2";
headerParams.addAll(_defaultHeaderMap);
if (contentType != null) {
headerParams['Content-Type'] = contentType;
}
final urlEncodedQueryParams = queryParams.map((param) => '$param');
final queryString = urlEncodedQueryParams.isNotEmpty ? '?${urlEncodedQueryParams.join('&')}' : '';
final uri = Uri.parse('$basePath$path$queryString');
try {
// Special case for uploading a single file which isn't a 'multipart/form-data'.
if (
body is MultipartFile && (contentType == null ||
!contentType.toLowerCase().startsWith('multipart/form-data'))
) {
final request = StreamedRequest(method, uri);
request.headers.addAll(headerParams);
request.contentLength = body.length;
body.finalize().listen(
request.sink.add,
onDone: request.sink.close,
// ignore: avoid_types_on_closure_parameters
onError: (Object error, StackTrace trace) => request.sink.close(),
cancelOnError: true,
);
final response = await _client.send(request);
return Response.fromStream(response);
}
if (body is MultipartRequest) {
final request = MultipartRequest(method, uri);
request.fields.addAll(body.fields);
request.files.addAll(body.files);
request.headers.addAll(body.headers);
request.headers.addAll(headerParams);
final response = await _client.send(request);
return Response.fromStream(response);
}
final msgBody = contentType == 'application/x-www-form-urlencoded'
? formParams
: await serializeAsync(body);
final nullableHeaderParams = headerParams.isEmpty ? null : headerParams;
switch(method) {
case 'POST': return await _client.post(uri, headers: nullableHeaderParams, body: msgBody,);
case 'PUT': return await _client.put(uri, headers: nullableHeaderParams, body: msgBody,);
case 'DELETE': return await _client.delete(uri, headers: nullableHeaderParams, body: msgBody,);
case 'PATCH': return await _client.patch(uri, headers: nullableHeaderParams, body: msgBody,);
case 'HEAD': return await _client.head(uri, headers: nullableHeaderParams,);
case 'GET': return await _client.get(uri, headers: nullableHeaderParams,);
}
} on SocketException catch (error, trace) {
throw ApiException.withInner(
HttpStatus.badRequest,
'Socket operation failed: $method $path',
error,
trace,
);
} on TlsException catch (error, trace) {
throw ApiException.withInner(
HttpStatus.badRequest,
'TLS/SSL communication failed: $method $path',
error,
trace,
);
} on IOException catch (error, trace) {
throw ApiException.withInner(
HttpStatus.badRequest,
'I/O operation failed: $method $path',
error,
trace,
);
} on ClientException catch (error, trace) {
throw ApiException.withInner(
HttpStatus.badRequest,
'HTTP connection failed: $method $path',
error,
trace,
);
} on Exception catch (error, trace) {
throw ApiException.withInner(
HttpStatus.badRequest,
'Exception occurred: $method $path',
error,
trace,
);
}
throw ApiException(
HttpStatus.badRequest,
'Invalid HTTP operation: $method $path',
);
}