public IHttpActionResult POST()
        {
            try
            {
                this.ChannelAccessToken = channelAccessToken;
                //取得Line Event(範例,只取第一個)
                var LineEvent = this.ReceivedMessage.events.FirstOrDefault();
                //配合Line verify
                if (LineEvent.replyToken == "00000000000000000000000000000000")
                {
                    return(Ok());
                }

                DateTime time = DateTime.UtcNow.AddHours(8);

                string       userId   = LineEvent.source.userId;
                string       groupId  = LineEvent.source.groupId;
                LineUserInfo UserInfo = null;

                //回覆訊息
                if (LineEvent.type == "message")
                {
                    if (LineEvent.message.type == "text" && LineEvent.source.groupId != null)
                    {
                        UserInfo = isRock.LineBot.Utility.GetGroupMemberProfile(groupId, userId, channelAccessToken);
                        //使用者ID和群組ID

                        LineGroupService lineGroupService = new LineGroupService(groupId);
                        if (lineGroupService.SearchLineGroup())  //尋找群組
                        {
                            //取得正在執行的活動
                            CampaignService campaignService = new CampaignService();
                            List <Campaign> campaigns       = campaignService.GetWorkingCampaign(groupId);
                            foreach (Campaign campaign in campaigns)
                            {
                                //取得留言數量(組)
                                ////因為目前Line團購只有+1+2的關鍵字,所以在第三個參數(keywordPattern)寫+1的Pattern
                                int number = CommentFilterService.KeywordFilter(LineEvent.message.text, campaign.Keyword, "+1");
                                if (number != 0 && number <= campaign.ProductGroup)
                                {
                                    //將搜尋到或新增的Customer存在lineCustomer裡
                                    LineCustomerViewModel lineCustomer = new LineCustomerViewModel();
                                    //搜尋是此訊息的人是否已存在LineCustomer資料表中
                                    if (!BotService.SearchLineCustomer(userId, UserInfo.displayName, ref lineCustomer))
                                    {
                                        //否,新增一筆
                                        lineCustomer = BotService.InsertLineCustomer(userId, UserInfo.displayName);
                                    }

                                    //開始建訂單
                                    GroupOrderViewModel groupOrder        = new GroupOrderViewModel();
                                    GroupOrderService   groupOrderService = new GroupOrderService();
                                    Product             product           = new Product();
                                    product = ProductService.GetProductById(campaign.ProductID);
                                    DateTime messageDateTime = BotService.TimestampToDateTime(LineEvent.timestamp);

                                    //若此留言要成單,所需的成團數量空間
                                    int remaningNumber = campaign.ProductGroup - number;
                                    //如果訂單人數還未滿,就拿此單來用,否則建新的
                                    if (groupOrderService.GetGroupOrder(campaign.CampaignID, remaningNumber, ref groupOrder))
                                    {
                                        decimal amount = product.UnitPrice * number;
                                        groupOrderService.InsertGroupOrder(campaign.CampaignID, messageDateTime, campaign.ProductGroup);
                                        groupOrderService.GetGroupOrder(campaign.CampaignID, remaningNumber, ref groupOrder);
                                    }

                                    //條件都達成,開始下單
                                    GroupOrderDetail groupOrderDetail = new GroupOrderDetail()
                                    {
                                        GroupOrderID    = groupOrder.GroupOrderID,
                                        LineCustomerID  = lineCustomer.LineCustomerID,
                                        ProductName     = product.ProductName,
                                        UnitPrice       = product.UnitPrice,
                                        Quantity        = number,
                                        MessageDateTime = messageDateTime
                                    };
                                    GroupOrderDetailService groupOrderDetailService = new GroupOrderDetailService();
                                    groupOrderDetailService.InsertGroupOrderDetail(groupOrderDetail);

                                    //更新清單資料
                                    int     currentNumberOfProduct = groupOrder.NumberOfProduct + number;
                                    decimal Amount  = groupOrder.Amount + groupOrderDetail.UnitPrice * groupOrderDetail.Quantity;
                                    bool    isGroup = false;
                                    if (currentNumberOfProduct == campaign.ProductGroup)
                                    {
                                        isGroup = true;
                                    }
                                    groupOrderService.UpdateGroupOrder(groupOrder.GroupOrderID, currentNumberOfProduct, Amount, isGroup);
                                    this.ReplyMessage(LineEvent.replyToken, "感謝" + UserInfo.displayName + "的下標!等待活動結束後會一併通知團購成功名單");
                                    break;
                                }
                            }
                        }
                    }
                    if (LineEvent.message.type == "sticker")
                    {
                        return(Ok());
                    }
                    if (LineEvent.message.type == "image")
                    {
                        return(Ok());
                    }
                }
                if (LineEvent.type == "join")
                {
                    DateTime timestampTotime = BotService.TimestampToDateTime(LineEvent.timestamp);

                    LineGroupService lineGroupService = new LineGroupService(groupId);

                    var linegroup = lineGroupService.GetGroupByID();
                    //新的群組
                    if (linegroup == null)
                    {
                        List <CompareStoreManager> managerId = LineBindingService.GroupNullCompare();
                        foreach (var item in managerId)
                        {
                            StoreMeanger checkProfile = BotService.CheckMeanger(groupId, item.LineID);
                            if (checkProfile.message != "Not found")
                            {
                                LineBindingService.CompareUpdateGroupid(groupId, item.StoreManagerID, timestampTotime);
                            }
                        }
                    }
                    else
                    {
                        var nullGroup = LineBindingService.GetNullGroup(linegroup.StoreManagerID);
                        //群組名字一樣,舊的改狀態新的null刪掉
                        if (nullGroup.Count == 0)
                        {
                            LineBindingService.UpdateBotGroupStatus(linegroup.GroupID, "True", timestampTotime);
                        }
                        else if (linegroup.GroupName == nullGroup.FirstOrDefault().GroupName)
                        {
                            LineBindingService.UpdateBotGroupStatus(linegroup.GroupID, "True", timestampTotime);
                            LineBindingService.DelNullGroup(nullGroup.FirstOrDefault().GroupID);
                        }
                        //群組名字不一樣,新的增加
                        else if (linegroup.GroupName != nullGroup.FirstOrDefault().GroupName)
                        {
                            LineBindingService.UpdateBotGroup(nullGroup.FirstOrDefault().GroupID, groupId, "True", timestampTotime);
                        }
                    }
                }
                if (LineEvent.type == "leave")
                {
                    int id = LineBindingService.GetIdByGroupId(groupId);
                    if (id != 0)
                    {
                        LineBindingService.UpdateGroupStatus(id, "False");
                    }
                }
                return(Ok());
            }
            catch (Exception ex)
            {
                foreach (var AdminUserId in AdminUser)
                {
                    this.PushMessage(AdminUserId, "發生錯誤:\n" + ex.Message);
                }

                return(Ok());
            }
        }