internal static string ComposeUrl()

in Darabonba/Core.cs [28:69]
40 lines of code
8 McCabe index (conditional complexity)

        internal static string ComposeUrl(Request request)
        {
            var urlBuilder = new StringBuilder("");

            urlBuilder.Append(ConverterUtils.StrToLower(request.Protocol)).Append("://");
            urlBuilder.Append(DictUtils.GetDicValue(request.Headers, "host"));
            if (request.Port > 0)
            {
                urlBuilder.Append(":");
                urlBuilder.Append(request.Port);
            }
            urlBuilder.Append(request.Pathname);

            if (request.Query != null && request.Query.Count > 0)
            {
                if (urlBuilder.ToString().Contains("?"))
                {
                    if (!urlBuilder.ToString().EndsWith("&"))
                    {
                        urlBuilder.Append("&");
                    }
                }
                else
                {
                    urlBuilder.Append("?");
                }
                foreach (var entry in request.Query)
                {
                    var key = entry.Key;
                    var val = entry.Value;
                    if (val == null)
                    {
                        continue;
                    }
                    urlBuilder.Append(PercentEncode(key));
                    urlBuilder.Append("=");
                    urlBuilder.Append(PercentEncode(val));
                    urlBuilder.Append("&");
                }
            }
            return urlBuilder.ToString().TrimEnd('?').TrimEnd('&');
        }