private async Task <Pagination <TEntity> > NormalizePagination(Pagination <TEntity> pagination)
{
var p = pagination ??= new Pagination <TEntity>();
if (!p.QueryOrFilter.HasValue() && p.QueryFunc == null)
{
p.QueryFunc = x => true;
}
var filter = p.QueryOrFilter.HasValue() ?
await FilterFactory.GetFilter <TEntity>(p.QueryOrFilter) : null;
if (filter != null)
{
var f = filter(new object());//payload is not supported yet
if (f == null)
{
return(null);
}
p.QueryFunc = c => f(c);
}
else
{
if (p.QueryFunc == null) //build only if func not exists
{
var right = ExpressionTreeBuilder.BuildBinaryTreeExpression <TEntity>(p.QueryOrFilter)?.Compile();
if (right == null)
{
return(null);
}
var ecr = WorkContext.CurrentEntityConfigRecord;
if (Config.ManageEntityPermissions)
{
var permittedIds = await PermissionManager.GetPermittedIds(WorkContext.CurrentUserId, ecr.EntityKey, ecr.PermissionRecord.ReadKey);
Func <TEntity, bool> left = a => permittedIds.Contains(a.Id);
p.QueryFunc = x => left(x) && right(x);
}
else
{
p.QueryFunc = x => right(x);
}
}
}
if (p.QueryFunc == null)
{
return(null);
}
if (!CurrentEntityConfigRecord.Metadata.ShowSoftDeleted && CurrentEntityConfigRecord.Metadata.IsSoftDeleted)
{
p.QueryFunc = p.QueryFunc.AndAlso(HideSoftDeletedFunc);
}
var paginationSettings = WorkContext.CurrentEntityConfigRecord.PaginationSettings;
p.OrderBy ??= paginationSettings.DefaultOrderBy;
p.Offset = p.Offset != 0 ? p.Offset : paginationSettings.DefaultOffset;
p.PageSize = p.PageSize != 0 ? p.PageSize : paginationSettings.DefaultPageSize;
p.IncludeNested = p.IncludeNested;
p.SortOrder ??= paginationSettings.DefaultSortOrder;
return(p);
}