using iWareCc.DecomposeTask.Entity;
using iWareCc.Properties;
using iWareCommon.Common.Entity;
using iWareCommon.Utils;
using iWareDataCore.ORM;
using iWareDataCore.TASK.Entity;
using iWareDataCore.TASK.EnumType;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace iWareCc.DecomposeTask.Chain
{
   public class 按策略获取一个待分解任务: IHandler
    {
        
        private IHandler nextHandler = null;
        /// <summary>
        /// 该节点的下一个节点
        /// </summary>
        public IHandler NextHandler
        {
            set { nextHandler = value; }
        }


        /// <summary>
        /// 主任务容器
        /// </summary>
        private MainTaskContainer MainTaskContainer;

        

        /// <summary>
        /// 从数据库里提取一个待分解的主任务
        /// </summary>
        public 按策略获取一个待分解任务(MainTaskContainer mainTaskContainer)
        {
            this.MainTaskContainer = mainTaskContainer;
        }

        /// <summary>
        /// 从数据库中提取一个未分解的主任务（按照分解次数,优先级,创建时间排序）
        /// </summary>
        public void Handle()
        {

            using (var dbModel = new DbModelCore())
            {
                try
                {
                    TASKMainTask mTask = null;
                    var taskPart = dbModel.TASKPartTasks.FirstOrDefault(x => x.maintasktype == (int)EMainTaskType.出库任务 && x.isfinished == 0);
                    if (taskPart != null)
                    {
                        mTask = dbModel.TASKMainTasks.OrderBy(x => x.decompositiontimes).ThenBy(x => x.sendtime).ThenBy(x => x.priority).FirstOrDefault(x => x.status == (int)EMainTaskStatus.未分解 && x.tasktype == (int)EMainTaskType.入库任务);
                    }
                    else
                    {
                        mTask = dbModel.TASKMainTasks.OrderBy(x => x.tasktype == (int)EMainTaskType.出库任务).OrderBy(x => x.decompositiontimes).ThenBy(x => x.sendtime).ThenBy(x => x.priority).FirstOrDefault(x => x.status == (int)EMainTaskStatus.未分解);
                        if (mTask == null)
                        {
                            mTask = dbModel.TASKMainTasks.OrderBy(x => x.decompositiontimes).ThenBy(x => x.sendtime).ThenBy(x => x.priority).FirstOrDefault(x => x.status == (int)EMainTaskStatus.未分解);
                        }
                    }
                    if (mTask == null)
                    {
                        LogTextHelper.WriteLine(Resources.LogDir + @"/分解任务流程", "获取第一个分解任务:暂无待分解的任务");
                        return;
                    }
                    if (taskPart != null && mTask.tasktype == (int)EMainTaskType.出库任务)
                    {
                        LogTextHelper.WriteLine(Resources.LogDir + @"/分解任务流程", "当前存在未完成的出库任务");
                        return;
                    }
                    mTask.decompositiontimes += 1;
                    if (mTask.decompositiontimes >= 100)
                    {
                        mTask.decompositiontimes = 0;
                    }
                    dbModel.SaveChanges();
                    
                    MainTaskContainer.MainTask = new MainTaskEntity(mTask);
                    LogTextHelper.WriteLine(Resources.LogDir + @"/分解任务流程", "获取第一个分解任务:{0}", mTask.id);

                    if (nextHandler != null)
                    {
                        nextHandler.Handle();
                    }

                }
                catch (Exception ex)
                {
                    LogTextHelper.WriteLog(Resources.LogDir, this.ToString(), "Handle", ex.Message);
                }
            }


        }
    }
}