internal static JToken MapProperties()

in libraries/Microsoft.Bot.Builder.AI.LUIS/V3/LuisUtil.cs [43:169]
112 lines of code
34 McCabe index (conditional complexity)

        internal static JToken MapProperties(JToken source, bool inInstance)
        {
            var result = source;
            if (source is JObject obj)
            {
                var nobj = new JObject();

                // Fix datetime by reverting to simple timex
                if (!inInstance && obj.TryGetValue("type", out var type) && type.Type == JTokenType.String && _dateSubtypes.Contains(type.Value<string>()))
                {
                    var timexs = obj["values"];
                    var arr = new JArray();
                    if (timexs != null)
                    {
                        var unique = new HashSet<string>();
                        foreach (var elt in timexs)
                        {
                            unique.Add(elt["timex"]?.Value<string>());
                        }

                        foreach (var timex in unique)
                        {
                            arr.Add(timex);
                        }

                        nobj["timex"] = arr;
                    }

                    nobj["type"] = type;
                }
                else
                {
                    // Map or remove properties
                    foreach (var property in obj.Properties())
                    {
                        var name = NormalizeEntity(property.Name);
                        var isObj = property.Value.Type == JTokenType.Object;
                        var isArray = property.Value.Type == JTokenType.Array;
                        var isString = property.Value.Type == JTokenType.String;
                        var isInt = property.Value.Type == JTokenType.Integer;
                        var val = MapProperties(property.Value, inInstance || property.Name == MetadataKey);
                        if (name == "datetime" && isArray)
                        {
                            nobj.Add("datetimeV1", val);
                        }
                        else if (name == "datetimeV2" && isArray)
                        {
                            nobj.Add("datetime", val);
                        }
                        else if (inInstance)
                        {
                            // Correct $instance issues
                            if (name == "length" && isInt)
                            {
                                nobj.Add("endIndex", property.Value.Value<int>() + property.Parent["startIndex"].Value<int>());
                            }
                            else if (!((isInt && name == "modelTypeId") ||
                                       (isString && name == "role")))
                            {
                                nobj.Add(name, val);
                            }
                        }
                        else
                        {
                            // Correct non-$instance values
                            if (name == "unit" && isString)
                            {
                                nobj.Add("units", val);
                            }
                            else
                            {
                                nobj.Add(name, val);
                            }
                        }
                    }
                }

                result = nobj;
            }
            else if (source is JArray arr)
            {
                var narr = new JArray();
                foreach (var elt in arr)
                {
                    // Check if element is geographyV2
                    var isGeographyV2 = string.Empty;
                    foreach (var props in elt.Children())
                    {
                        var tokenProp = props as JProperty;
                        if (tokenProp == null)
                        {
                            break;
                        }

                        if (tokenProp.Name.Contains("type") && _geographySubtypes.Contains(tokenProp.Value.ToString()))
                        {
                            isGeographyV2 = tokenProp.Value.ToString();
                            break;
                        }
                    }

                    if (!inInstance && !string.IsNullOrEmpty(isGeographyV2))
                    {
                        var geoEntity = new JObject();
                        foreach (var props in elt.Children())
                        {
                            var tokenProp = props as JProperty;
                            if (tokenProp.Name.Contains("value"))
                            {
                                geoEntity.Add("location", tokenProp.Value);
                            }
                        }

                        geoEntity.Add("type", isGeographyV2);
                        narr.Add(geoEntity);
                    }
                    else
                    {
                        narr.Add(MapProperties(elt, inInstance));
                    }
                }

                result = narr;
            }

            return result;
        }