private SpeechConfig CreateSpeechConfig()

in src/extensions/speech_extension/commands/synthesize_command.cs [224:277]
48 lines of code
15 McCabe index (conditional complexity)

        private SpeechConfig CreateSpeechConfig()
        {
            var key = _values["service.config.key"];
            var host = _values["service.config.host"];
            var region = _values["service.config.region"];
            var endpoint = _values["service.config.endpoint.uri"];
            var tokenValue = _values["service.config.token.value"];

            if (_values.Contains("embedded.config.embedded"))
            {
                key = "UNUSED";
                region = "UNUSED";
            }

            if (string.IsNullOrEmpty(endpoint) && string.IsNullOrEmpty(region) && string.IsNullOrEmpty(host))
            {
                _values.AddThrowError("ERROR:", $"Creating SpeechConfig; requires one of: region, endpoint, or host.");
            }
            else if (!string.IsNullOrEmpty(region) && string.IsNullOrEmpty(tokenValue) && string.IsNullOrEmpty(key))
            {
                _values.AddThrowError("ERROR:", $"Creating SpeechConfig; use of region requires one of: key or token.");
            }

            SpeechConfig? config = null;
            if (!string.IsNullOrEmpty(endpoint))
            {
                config = string.IsNullOrEmpty(key)
                    ? SpeechConfig.FromEndpoint(new Uri(endpoint))
                    : SpeechConfig.FromEndpoint(new Uri(endpoint), key);
            }
            else if (!string.IsNullOrEmpty(host))
            {
                config = string.IsNullOrEmpty(key)
                    ? SpeechConfig.FromHost(new Uri(host))
                    : SpeechConfig.FromHost(new Uri(host), key);
            }
            else // if (!string.IsNullOrEmpty(region))
            {
                config = string.IsNullOrEmpty(tokenValue)
                    ? SpeechConfig.FromSubscription(key, region)
                    : SpeechConfig.FromAuthorizationToken(tokenValue, region);
            }

            if (!string.IsNullOrEmpty(tokenValue))
            {
                config.AuthorizationToken = tokenValue;
            }

            var format = _values["audio.output.format"];
            if (!string.IsNullOrEmpty(format)) config.SetSpeechSynthesisOutputFormat(AudioOutputHelpers.OutputFormatFrom(format));

            SetSpeechConfigProperties(config);
            return config;
        }