public static IPaginationCollection <dynamic> FixTimeZoneOffsetInQueryResult(IPaginationCollection <dynamic> dtos)
{
if (dtos.Items != null)
{
var timeZoneOffset = TimeZoneInfo.Local.GetUtcOffset(DateTime.Now);
var items = new List <dynamic>();
foreach (var dtoItem in dtos.Items)
{
if (dtoItem is IDictionary <string, object> propertyDictionary)
{
var expandoObjectDictionary = new Dictionary <string, object>();
foreach (var(propertyName, value) in propertyDictionary)
{
var propertyValue = value;
// Property fix operations
if (propertyValue is DateTime dateTimeProperty)
{
propertyValue = dateTimeProperty.Add(timeZoneOffset);
}
expandoObjectDictionary.Add(propertyName, propertyValue);
}
// Convert Dictionary to ExpandoObject
var expandoObject = new ExpandoObject();
var eoColl = (ICollection <KeyValuePair <string, object> >)expandoObject;
foreach (var kvp in expandoObjectDictionary)
{
eoColl.Add(kvp);
}
dynamic dynamicObject = expandoObject;
items.Add(dynamicObject);
}
}
return(new PaginationCollection <dynamic>
{
Count = dtos.Count,
Items = items
});
}
return(dtos);
}
public static dynamic ExecuteSelectQuery <T>(this IPaginationCollection <T> paginationCollection, IDictionary <string, bool> selectFields)
{
if (paginationCollection?.Items == null || selectFields == null || !selectFields.Any())
{
return(paginationCollection);
}
bool isInclude = selectFields.Values.Any(x => x);
bool isExclude = selectFields.Values.Any(x => !x);
if (isInclude && isExclude)
{
throw new SelectQueryInclusionException();
}
var selectedProperties = new List <PropertyInfo>();
var jsonFieldNameDictionary = new Dictionary <string, string>();
var properties = typeof(T).GetProperties();
foreach (var propertyInfo in properties)
{
bool?isSelected = null;
var jsonPropertyAttribute = propertyInfo.CustomAttributes.FirstOrDefault(x => x.AttributeType == typeof(JsonPropertyAttribute));
var constructorArguments = jsonPropertyAttribute?.ConstructorArguments.ToList();
var attributeValue = constructorArguments?.Select(x => x.Value?.ToString()).FirstOrDefault(x => !string.IsNullOrEmpty(x));
if (attributeValue != null && selectFields.ContainsKey(attributeValue))
{
isSelected = selectFields[attributeValue];
}
if (attributeValue != null && !string.IsNullOrEmpty(attributeValue))
{
/*
* In projections that explicitly include fields, the _id field is the only field that you can explicitly exclude.
* In projections that explicitly excludes fields, the _id field is the only field that you can explicitly include; however, the _id field is included by default.
*/
if (attributeValue == "_id")
{
selectedProperties.Add(propertyInfo);
jsonFieldNameDictionary.Add(propertyInfo.Name, attributeValue);
continue;
}
if (isInclude)
{
if (isSelected != null && isSelected.Value)
{
selectedProperties.Add(propertyInfo);
}
}
else
{
if (isSelected != null && !isSelected.Value)
{
selectedProperties.Add(propertyInfo);
}
}
if (!jsonFieldNameDictionary.ContainsKey(propertyInfo.Name))
{
jsonFieldNameDictionary.Add(propertyInfo.Name, attributeValue);
}
}
}
if (isExclude)
{
var exludedProperties = new List <PropertyInfo>();
exludedProperties.AddRange(selectedProperties);
selectedProperties.Clear();
selectedProperties.AddRange(properties.Where(propertyInfo => !exludedProperties.Contains(propertyInfo)));
}
List <ExpandoObject> projectinatedList = new List <ExpandoObject>();
foreach (var item in paginationCollection.Items)
{
dynamic expandoObject = new ExpandoObject();
IDictionary <string, object> expandoObjectDictionary = expandoObject as IDictionary <string, object>;
foreach (var propertyInfo in selectedProperties)
{
var propertyName = jsonFieldNameDictionary.ContainsKey(propertyInfo.Name)
? jsonFieldNameDictionary[propertyInfo.Name]
: propertyInfo.Name;
expandoObjectDictionary.Add(propertyName, propertyInfo.GetValue(item));
}
projectinatedList.Add(expandoObject);
}
return(new PaginationCollection <dynamic>
{
Count = paginationCollection.Count,
Items = projectinatedList
});
}
