using YLErp.Modules.SystemModule;

namespace YLErp.Modules.EodModule.SettlementModule
{
    /// <summary>
    /// 
    /// </summary>
    public class EodTaskQueryService : YLBaseService
    {
        public EodTaskQueryService(OptUserInfo userInfo) : base(userInfo)
        {

        }

        public IEnumerable<EodTask> GetEodTasksToShow(bool onlyLastRunTask)
        {
            var lastTask = EodTaskRunner.LastTask;

            //onlyLastRunTask时如果runner没有lastTask则从数据库取第一个

            if (onlyLastRunTask && lastTask != null)
            {
                return new[] { lastTask };
            }

            var taskId = lastTask?.id ?? 0;

            var startDate = DateTime.Today.AddDays(-3);

            var taskPredicate = PredicateBuilder.Create<EodTask>(t => t.TaskStartTime > startDate && t.id != taskId);

            List<EodTask> taskList;

            if (onlyLastRunTask)
            {
                //查找今天最后一次执行的任务
                var firstTask = DbContext.EodTask.Where(taskPredicate).Where(t => t.TaskStartTime > DateTime.Today)
                    .OrderByDescending(t => t.TaskStartTime).FirstOrDefault();

                if (firstTask == null)
                {
                    //查找正在等待执行的任务
                    firstTask = DbContext.EodTask.Where(taskPredicate).Where(t => t.TaskState < EodTaskState.completed)
                        .OrderBy(t => t.StartDate).ThenBy(n => n.id).FirstOrDefault();

                    if (firstTask == null)
                    {
                        return Enumerable.Empty<EodTask>();
                    }
                }

                taskList = new List<EodTask> { firstTask };
                taskPredicate = taskPredicate.And(n => n.id == firstTask.id);
            }
            else
            {
                taskList = DbContext.EodTask.Where(taskPredicate).OrderByDescending(n => n.TaskStartTime).ToList();
            }

            var detailQuery = from t in DbContext.EodTask.Where(taskPredicate)
                              join d in DbContext.EodTaskDetail on t.id equals d.TaskId
                              orderby d.TaskId, d.id descending
                              select new EodTaskDetailDto
                              {
                                  TaskId = d.TaskId,
                                  ValueDate = d.ValueDate,
                                  ElapsedMilliseconds = d.ElapsedMilliseconds
                              };

            var detailGroup = detailQuery.ToLookup(n => n.TaskId);

            foreach (var task in taskList)
            {
                if (task.TaskState == EodTaskState.running)
                {
                    task.TaskState = EodTaskState.interrupted;
                }

                var dg = detailGroup.FirstOrDefault(n => n.Key == task.id);
                if (dg != null)
                {
                    task.Details = dg.Take(4).ToArray();
                }
                var clientNameStr = "";
                if (!string.IsNullOrEmpty(task.ClientIds))
                {
                    var clientNames= ClientDataModelV1.GetAllOpenClient(isContainClosed: true).Where(l=> task.ClientIds.Split(',').ToArray().Contains(l.Value)).Select(l=>l.Text);
                    clientNameStr = string.Join(",", clientNames);
                }
                task.ClientNameStr= clientNameStr;
            }

            if (lastTask != null)
            {
                taskList.Insert(0, lastTask);
            }

            return taskList;
        }
    }
}