public async Task <ServerResponse <List <FeedResponse> > > GetFeedsAsync(long appUserId,
FeedFilterRequest feedFilterRequest, Expression <Func <Feed, bool> > accessPredicate)
{
return(await BaseInvokeAsync(async() =>
{
var query = DbContext.Feeds
.AsQueryable()
.Where(x => x.AppUserId == appUserId.ToString())
.Where(accessPredicate)
.AsEnumerable();
query = FilterFeeds(query, feedFilterRequest);
query = query.OrderByDescending(x => x.CreateDate);
if (feedFilterRequest.Offset.HasValue)
{
query = query.Skip(feedFilterRequest.Offset.Value);
}
if (feedFilterRequest.Limit.HasValue)
{
query = query.Take(feedFilterRequest.Limit.Value);
}
return ServerResponseBuilder.Build(await query.ToAsyncEnumerable()
.Select(x => Mapper.Map <Feed, FeedResponse>(x))
.ToListAsync());
}));
}
private IEnumerable <Feed> FilterFeeds(IEnumerable <Feed> query, FeedFilterRequest feedFilterRequest)
{
if (feedFilterRequest.TagIds.Any())
{
query = query.Where(x => x.Tags.Any(tag => feedFilterRequest.TagIds.Any(t => t == tag.Id)));
}
return(query);
}
