/// <summary>
/// Filters the items.
/// </summary>
/// <param name="request">The request.</param>
/// <param name="items">The items.</param>
/// <param name="user">The user.</param>
/// <returns>IEnumerable{`0}.</returns>
private IEnumerable <BaseItem> FilterItems(GetItemsByName request, IEnumerable <BaseItem> items, User user)
{
if (!string.IsNullOrEmpty(request.NameStartsWithOrGreater))
{
items = items.Where(i => string.Compare(request.NameStartsWithOrGreater, i.SortName, StringComparison.CurrentCultureIgnoreCase) < 1);
}
if (!string.IsNullOrEmpty(request.NameStartsWith))
{
items = items.Where(i => string.Compare(request.NameStartsWith, i.SortName.Substring(0, 1), StringComparison.CurrentCultureIgnoreCase) == 0);
}
if (!string.IsNullOrEmpty(request.NameLessThan))
{
items = items.Where(i => string.Compare(request.NameLessThan, i.SortName, StringComparison.CurrentCultureIgnoreCase) == 1);
}
var imageTypes = request.GetImageTypes().ToList();
if (imageTypes.Count > 0)
{
items = items.Where(item => imageTypes.Any(item.HasImage));
}
var filters = request.GetFilters().ToList();
if (filters.Contains(ItemFilter.Dislikes))
{
items = items.Where(i =>
{
var userdata = UserDataRepository.GetUserData(user, i);
return(userdata != null && userdata.Likes.HasValue && !userdata.Likes.Value);
});
}
if (filters.Contains(ItemFilter.Likes))
{
items = items.Where(i =>
{
var userdata = UserDataRepository.GetUserData(user, i);
return(userdata != null && userdata.Likes.HasValue && userdata.Likes.Value);
});
}
if (filters.Contains(ItemFilter.IsFavoriteOrLikes))
{
items = items.Where(i =>
{
var userdata = UserDataRepository.GetUserData(user, i);
var likes = userdata.Likes ?? false;
var favorite = userdata.IsFavorite;
return(likes || favorite);
});
}
if (filters.Contains(ItemFilter.IsFavorite))
{
items = items.Where(i =>
{
var userdata = UserDataRepository.GetUserData(user, i);
return(userdata != null && userdata.IsFavorite);
});
}
// Avoid implicitly captured closure
var currentRequest = request;
return(items.Where(i => ApplyAdditionalFilters(currentRequest, i, user, false)));
}
/// <summary>
/// Filters the items.
/// </summary>
/// <param name="request">The request.</param>
/// <param name="items">The items.</param>
/// <param name="user">The user.</param>
/// <returns>IEnumerable{`0}.</returns>
private IEnumerable <TItemType> FilterItems(GetItemsByName request, IEnumerable <TItemType> items, User user)
{
if (!string.IsNullOrEmpty(request.NameStartsWithOrGreater))
{
items = items.Where(i => string.Compare(request.NameStartsWithOrGreater, i.SortName, StringComparison.CurrentCultureIgnoreCase) < 1);
}
if (!string.IsNullOrEmpty(request.NameStartsWith))
{
items = items.Where(i => string.Compare(request.NameStartsWith, i.SortName.Substring(0, 1), StringComparison.CurrentCultureIgnoreCase) == 0);
}
if (!string.IsNullOrEmpty(request.NameLessThan))
{
items = items.Where(i => string.Compare(request.NameLessThan, i.SortName, StringComparison.CurrentCultureIgnoreCase) == 1);
}
var imageTypes = request.GetImageTypes().ToList();
if (imageTypes.Count > 0)
{
items = items.Where(item => imageTypes.Any(imageType => ItemsService.HasImage(item, imageType)));
}
var filters = request.GetFilters().ToList();
if (filters.Count == 0)
{
return(items);
}
items = items.AsParallel();
if (filters.Contains(ItemFilter.Dislikes))
{
items = items.Where(i =>
{
var userdata = UserDataRepository.GetUserData(user.Id, i.GetUserDataKey());
return(userdata != null && userdata.Likes.HasValue && !userdata.Likes.Value);
});
}
if (filters.Contains(ItemFilter.Likes))
{
items = items.Where(i =>
{
var userdata = UserDataRepository.GetUserData(user.Id, i.GetUserDataKey());
return(userdata != null && userdata.Likes.HasValue && userdata.Likes.Value);
});
}
if (filters.Contains(ItemFilter.IsFavoriteOrLikes))
{
items = items.Where(i =>
{
var userdata = UserDataRepository.GetUserData(user.Id, i.GetUserDataKey());
var likes = userdata.Likes ?? false;
var favorite = userdata.IsFavorite;
return(likes || favorite);
});
}
if (filters.Contains(ItemFilter.IsFavorite))
{
items = items.Where(i =>
{
var userdata = UserDataRepository.GetUserData(user.Id, i.GetUserDataKey());
return(userdata != null && userdata.IsFavorite);
});
}
return(items.AsEnumerable());
}