public static string ParseFilter()

in apps/samplecode/education/rosterapi/EducationAccelerator.WebApi/EducationAccelerator.WebApi/Models/BaseModel.cs [176:213]

30 lines of code
6 McCabe index (conditional complexity)


        public static string ParseFilter(Type modelType, string filter, Dictionary<string, string> attributes)
        {
            var match = filterMatcher.Match(filter);

            if (!match.Success)
            {
                throw new InvalidFilterFieldException($"Filter: {filter}");
            }

            var dataFieldRaw = match.Groups[1].Value;
            var dataField = dataFieldRaw.ToLower();
            var predicate = match.Groups[2].Value;
            var value = match.Groups[3].Value.ToLower();

            // get the CRM field name
            // get the comparator
            // if the field is an enum, get the numerical value, otherwise just pass in the given value (any other types need special consideration?)

            var lookupMethod = modelType.GetMethod("LookupProperty", BindingFlags.Public | BindingFlags.Static | BindingFlags.FlattenHierarchy);

            try
            {
                var comparator = ComparatorMap[predicate];
                var modelProp = (PropertyInfo)lookupMethod.Invoke(null, new object[] { modelType, dataField });

                var fieldType = modelProp.PropertyType;
                var getter = modelProp.GetMethod;
                var comparisonValue = fieldType.IsEnum ? ((int)Enum.Parse(fieldType, value)).ToString() : value;

                comparisonValue = comparator == "like" ? $"%{comparisonValue}%" : comparisonValue;

                return $"<condition attribute='{attributes[dataField]}' operator='{comparator}' value='{comparisonValue}' />";
            }
            catch (Exception e)
            {
                throw new InvalidFilterFieldException($"{dataFieldRaw}");
            }
        }