/// <summary>
        ///     Delete appointments from source
        /// </summary>
        /// <param name="syncProfile"></param>
        /// <param name="sourceCalendarSpecificData"></param>
        /// <param name="syncCallback"></param>
        /// <returns>
        /// </returns>
        private bool DeleteSourceTasks(TaskSyncProfile syncProfile, SyncMetric syncMetric,
                                       IDictionary <string, object> sourceCalendarSpecificData, SyncCallback syncCallback)
        {
            //if (syncProfile.SyncSettings.DisableDelete)
            //{
            //    return true;
            //}
            //Updating entry isDeleteOperation status
            TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.Line);
            TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.ReadingEntriesToDelete,
                                                     SourceTaskService.TaskServiceName);
            //Getting appointments to isDeleteOperation
            TaskSyncEngine.GetSourceEntriesToDelete(syncProfile, SourceTasks, DestinationTasks);
            var appointmentsToDelete = TaskSyncEngine.SourceTasksToDelete;

            //Updating Get entry isDeleteOperation status
            TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.EntriesToDelete, appointmentsToDelete.Count);
            if (appointmentsToDelete.Count == 0)
            {
                TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.Line);
                return(true);
            }

            //Updating isDeleteOperation status
            TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.DeletingEntries,
                                                     SourceTaskService.TaskServiceName);
            //Deleting entries
            var deletedTasks =
                SourceTaskService.DeleteReminderTasks(appointmentsToDelete, sourceCalendarSpecificData).Result;
            var isSuccess = deletedTasks.IsSuccess;

            //Update status if entries were successfully deleted
            TaskSyncStatus =
                StatusHelper.GetMessage(isSuccess
                    ? SyncStateEnum.DeletingEntriesComplete
                    : SyncStateEnum.DeletingEntriesFailed);
            TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.Line);

            if (isSuccess)
            {
                syncMetric.SourceMetric.DeleteCount       = appointmentsToDelete.Count;
                syncMetric.SourceMetric.DeleteFailedCount = appointmentsToDelete.Count - deletedTasks.Count;
                for (var index = 0; index < appointmentsToDelete.Count; index++)
                {
                    SourceTasks.Remove(appointmentsToDelete[index]);
                }
            }
            return(isSuccess);
        }
        /// <summary>
        ///     Add appointments to source
        /// </summary>
        /// <param name="syncProfile"></param>
        /// <param name="syncMetric"></param>
        /// <param name="sourceCalendarSpecificData"></param>
        /// <returns>
        /// </returns>
        private bool AddSourceTasks(TaskSyncProfile syncProfile, SyncMetric syncMetric,
                                    IDictionary <string, object> sourceCalendarSpecificData)
        {
            //Update status for reading entries to add
            TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.ReadingEntriesToAdd,
                                                     SourceTaskService.TaskServiceName);
            //Get entries to add
            TaskSyncEngine.GetSourceEntriesToAdd(syncProfile, SourceTasks, DestinationTasks);
            var appointmentsToAdd = TaskSyncEngine.SourceTasksToAdd;

            TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.EntriesToAdd, appointmentsToAdd.Count);
            if (appointmentsToAdd.Count == 0)
            {
                TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.Line);
                return(true);
            }
            TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.AddingEntries, SourceTaskService.TaskServiceName);

            //Add entries to calendar
            var addedTasks = SourceTaskService.AddReminderTasks(appointmentsToAdd,
                                                                sourceCalendarSpecificData)
                             .Result;
            var isSuccess = addedTasks.IsSuccess;

            //Update status if entries were successfully added
            TaskSyncStatus =
                StatusHelper.GetMessage(isSuccess ? SyncStateEnum.AddEntriesComplete : SyncStateEnum.AddEntriesFailed);
            TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.Line);

            if (isSuccess)
            {
                syncMetric.SourceMetric.AddCount = appointmentsToAdd.Count;
                //LoadSourceId(addedTasks, DestinationTasks.TaskListId);
                SourceTasks.AddRange(addedTasks);
                if (syncProfile.SyncMode == SyncModeEnum.TwoWay)
                {
                    //var updateDestList = UpdateWithChildId(addedTasks, DestinationTasks);
                    //TaskSyncEngine.DestTasksToUpdate.AddRangeCompareForUpdate(updateDestList);
                }
            }

            return(isSuccess);
        }
        public bool SyncTask(TaskSyncProfile syncProfile, SyncMetric syncMetric, SyncCallback syncCallback)
        {
            InitiatePreSyncSetup(syncProfile);

            var isSuccess = false;

            if (syncProfile != null)
            {
                TaskSyncEngine.Clear();
                //Add log for sync mode
                TaskSyncStatus = string.Format("Calendar Sync : {0} {2} {1}", SourceTaskService.TaskServiceName,
                                               DestinationTaskService.TaskServiceName,
                                               syncProfile.SyncMode == SyncModeEnum.TwoWay ? "<===>" : "===>");
                TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.Line);
                DateTime startDate, endDate;
                GetDateRange(syncProfile, out startDate, out endDate);
                //Add log for date range
                TaskSyncStatus = $"Date Range : {startDate.ToString("d")} - {endDate.ToString("d")}";

                //Load calendar specific data
                var sourceCalendarSpecificData =
                    GetCalendarSpecificData(syncProfile.Source, syncProfile);
                var destinationCalendarSpecificData =
                    GetCalendarSpecificData(syncProfile.Destination, syncProfile);

                //Get source and destination Tasks
                isSuccess = LoadTasks(sourceCalendarSpecificData,
                                      destinationCalendarSpecificData);

                if (isSuccess)
                {
                    syncMetric.SourceMetric.OriginalCount = SourceTasks.Count;
                    syncMetric.DestMetric.OriginalCount   = DestinationTasks.Count;
                    //LoadSourceId(DestinationTasks, SourceTasks.TaskListId);
                    //LoadSourceId(SourceTasks, DestinationTasks.TaskListId);
                }

                if (isSuccess)
                {
                    //Delete destination Tasks
                    isSuccess = DeleteDestinationTasks(syncProfile, syncMetric, destinationCalendarSpecificData, syncCallback);
                }

                if (isSuccess)
                {
                    //Add Tasks to destination
                    isSuccess = AddDestinationTasks(syncProfile, syncMetric, destinationCalendarSpecificData);
                }

                if (isSuccess && syncProfile.SyncMode == SyncModeEnum.TwoWay)
                {
                    //Delete destination appointments
                    isSuccess = DeleteSourceTasks(syncProfile, syncMetric, sourceCalendarSpecificData, syncCallback);
                    if (isSuccess)
                    {
                        //If sync mode is two way... add events to source
                        isSuccess = AddSourceTasks(syncProfile, syncMetric, sourceCalendarSpecificData);
                    }
                }

                if (isSuccess)
                {
                    isSuccess = UpdateEntries(syncProfile, syncMetric, sourceCalendarSpecificData, destinationCalendarSpecificData);
                }
            }
            syncMetric.IsSuccess   = isSuccess;
            SourceTasks            = null;
            DestinationTasks       = null;
            SourceTaskService      = null;
            DestinationTaskService = null;
            return(isSuccess);
        }
        /// <summary>
        ///     Delete appointments in destination
        /// </summary>
        /// <param name="syncProfile"></param>
        /// <param name="syncMetric"></param>
        /// <param name="destinationCalendarSpecificData"></param>
        /// <param name="syncCallback"></param>
        /// <returns>
        /// </returns>
        private bool DeleteDestinationTasks(TaskSyncProfile syncProfile, SyncMetric syncMetric,
                                            IDictionary <string, object> destinationCalendarSpecificData, SyncCallback syncCallback)
        {
            //if (syncProfile.SyncSettings.DisableDelete)
            //{
            //    return true;
            //}
            //Updating entry isDeleteOperation status
            TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.Line);
            TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.ReadingEntriesToDelete,
                                                     DestinationTaskService.TaskServiceName);
            //Getting appointments to isDeleteOperation
            TaskSyncEngine.GetDestEntriesToDelete(syncProfile,
                                                  SourceTasks, DestinationTasks);
            var appointmentsToDelete = TaskSyncEngine.DestTasksToDelete;

            if (syncProfile.SyncMode == SyncModeEnum.OneWay)
            {
                //if (syncProfile.SyncSettings.ConfirmOnDelete && syncCallback != null)
                //{
                //    var orphanEntries = Environment.NewLine +
                //                        string.Join(Environment.NewLine, TaskSyncEngine.DestOrphanEntries);
                //    //Log Orphan Entries
                //    Logger.Warn("Orphan entries to delete: " + orphanEntries);

                //    var message = string.Format("Are you sure you want to delete {0} orphan entries from {1}?{2}",
                //        appointmentsToDelete.Count, DestinationTaskService.TaskServiceName,
                //        orphanEntries);
                //    var e = new SyncEventArgs(message, UserActionEnum.ConfirmDelete);

                //    var task = syncCallback(e);
                //    if (task.Result)
                //    {
                //        appointmentsToDelete.AddRange(TaskSyncEngine.DestOrphanEntries);
                //    }
                //}
                //else if (!syncProfile.SyncSettings.DisableDelete)
                //{
                //    appointmentsToDelete.AddRange(TaskSyncEngine.DestOrphanEntries);
                //}
            }

            //Updating Get entry isDeleteOperation status
            TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.EntriesToDelete, appointmentsToDelete.Count);

            if (appointmentsToDelete.Count == 0)
            {
                TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.Line);
                return(true);
            }

            //Updating isDeleteOperation status
            TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.DeletingEntries,
                                                     DestinationTaskService.TaskServiceName);

            //Deleting entries

            var deletedTasks = DestinationTaskService.DeleteReminderTasks(appointmentsToDelete, destinationCalendarSpecificData)
                               .Result;
            var isSuccess = deletedTasks.IsSuccess;

            //Update status if entries were successfully deleted
            TaskSyncStatus =
                StatusHelper.GetMessage(isSuccess
                    ? SyncStateEnum.DeletingEntriesComplete
                    : SyncStateEnum.DeletingEntriesFailed);
            TaskSyncStatus = StatusHelper.GetMessage(SyncStateEnum.Line);
            if (isSuccess)
            {
                syncMetric.DestMetric.DeleteCount       = appointmentsToDelete.Count;
                syncMetric.DestMetric.DeleteFailedCount = appointmentsToDelete.Count - deletedTasks.Count;
                for (var index = 0; index < appointmentsToDelete.Count; index++)
                {
                    DestinationTasks.Remove(appointmentsToDelete[index]);
                }
            }

            return(isSuccess);
        }