Esempio n. 1
0
        public IEnumerable <NewsfeedResponseModel> GetUserFeed(string userId, int skip, int take)
        {
            var userFeedKey = GetEntryKey(FeedPrefix, userId);
            List <NewsfeedResponseModel> responseItems = new List <NewsfeedResponseModel>();
            var startIndex = skip;
            var counter    = 0;

            using (var client = GetClientInstance())
            {
                var allPostIds = client.GetAllItemsFromSet(userFeedKey);
                if (allPostIds != null && allPostIds.Count > 0)
                {
                    IEnumerable <string> postIds;
                    if (allPostIds.Count > take)
                    {
                        postIds = allPostIds.Skip(skip).Take(take);
                    }
                    else
                    {
                        postIds = allPostIds.Take(take);
                    }
                    foreach (var postId in postIds)
                    {
                        //Read post from cache
                        var currentPost = wallPostRepo.GetPost(postId);
                        if (currentPost != null)
                        {
                            var userActionsOnPostKey = GetEntryKey(FeedPrefix, string.Concat(userId, ":", postId));
                            //10000 is just a random rank assumed to be the max events on a post
                            var userActionsOnPost = client.GetRangeFromSortedSet(userActionsOnPostKey, 0, 10000);
                            if (userActionsOnPost != null && userActionsOnPost.Count > 0)
                            {
                                var mappedActions = new List <NewsfeedAction>();
                                foreach (var action in userActionsOnPost)
                                {
                                    var values = action.Split(':');
                                    mappedActions.Add(new NewsfeedAction {
                                        Action = (NewsfeedActionType)Convert.ToInt16(values[1]), By = values[0]
                                    });
                                }
                                var totalCommentCount = commentCountRepo.GetCommentCount(currentPost.Id);
                                var totalLikeCount    = entryLikeRepo.GetPostLikeCount(currentPost.Id);

                                var model = new NewsfeedResponseModel
                                {
                                    Body         = currentPost.Body,
                                    CreatedDate  = currentPost.CreatedDate,
                                    Id           = currentPost.Id,
                                    ModifiedDate = currentPost.ModifiedDate,
                                    PostedBy     = currentPost.PostedBy,
                                    PostType     = currentPost.PostType,
                                    WallOwner    = new WallModel {
                                        OwnerId = currentPost.TargetWall.Id, WallOwnerType = (WallType)currentPost.TargetWall.WallOwnerTypeId
                                    },
                                    FeedDescription = mappedActions,
                                    LikeCount       = totalLikeCount,
                                    CommentCount    = totalCommentCount
                                };
                                responseItems.Add(model);

                                counter++;
                                if (counter == take)
                                {
                                    break;
                                }
                            }
                            else
                            {
                                client.RemoveItemFromSet(userFeedKey, postId);
                                client.RemoveEntry(userActionsOnPostKey);
                            }
                        }
                        else
                        {
                            client.RemoveItemFromSet(userFeedKey, postId);
                        }
                    }
                }
                return(responseItems);
            }
        }
        public IEnumerable <NewsfeedResponseModel> GetUserFeed(string userId, int skip, int take)
        {
            var userFeedKey = GetEntryKey(FeedPrefix, userId);
            List <NewsfeedResponseModel> responseItems = new List <NewsfeedResponseModel>();
            var startIndex = skip;
            var counter    = 0;
            var db         = StackExchangeRedisConnectionProvider.GetDataBase();
            var allPostIds = db.SetMembers(userFeedKey).ToList();

            if (allPostIds != null && allPostIds.Count > 0)
            {
                IEnumerable <RedisValue> postIds;
                if (allPostIds.Count > take)
                {
                    postIds = allPostIds.Skip(skip).Take(take);
                }
                else
                {
                    postIds = allPostIds.Take(take);
                }
                foreach (var postId in postIds)
                {
                    //Read post from cache
                    var currentPost = wallPostRepo.GetPost(postId);
                    if (currentPost != null)
                    {
                        var userActionsOnPostKey = GetEntryKey(FeedPrefix, string.Concat(userId, ":", postId));
                        //10000 is just a random rank assumed to be the max events on a post
                        var userActionsOnPost = db.SortedSetRangeByScoreWithScores(userActionsOnPostKey, 0, 10000);
                        if (userActionsOnPost != null && userActionsOnPost.Length > 0)
                        {
                            var mappedActions = new List <NewsfeedAction>();
                            foreach (var action in userActionsOnPost)
                            {
                                var values = action.Element.ToString().Split(':');
                                mappedActions.Add(new NewsfeedAction {
                                    Action = (NewsfeedActionType)Convert.ToInt16(values[1]), By = values[0]
                                });
                            }
                            var totalCommentCount = commentCountRepo.GetCommentCount(currentPost.Id);
                            var totalLikeCount    = entryLikeRepo.GetPostLikeCount(currentPost.Id);

                            var model = new NewsfeedResponseModel
                            {
                                Body         = currentPost.Body,
                                CreatedDate  = currentPost.CreatedDate,
                                Id           = currentPost.Id,
                                ModifiedDate = currentPost.ModifiedDate,
                                PostedBy     = currentPost.PostedBy,
                                PostType     = currentPost.PostType,
                                WallOwner    = new WallModel {
                                    OwnerId = currentPost.TargetWall.Id, WallOwnerType = (WallType)currentPost.TargetWall.WallOwnerTypeId
                                },
                                FeedDescription = mappedActions,
                                LikeCount       = totalLikeCount,
                                CommentCount    = totalCommentCount
                            };
                            responseItems.Add(model);

                            counter++;
                            if (counter == take)
                            {
                                break;
                            }
                        }
                        else
                        {
                            db.SetRemove(userFeedKey, postId);
                            db.KeyDelete(userActionsOnPostKey);
                        }
                    }
                    else
                    {
                        db.SetRemove(userFeedKey, postId);
                    }
                }
            }
            return(responseItems);
        }