using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using JNPF.Common.Extension;
using JNPF.Templates;
using Microsoft.AspNetCore.Mvc;
using NPOI.SS.Formula.Functions;
using Spire.Doc;
using Tnb.WarehouseMgr.Entities;

namespace Tnb.WarehouseMgr
{
    /// <summary>
    /// 动态规划类
    /// </summary>
    public class Dp
    {
        private HashSet<string> set = new HashSet<string>();
        
        /// <summary>
        /// 动态规划函数
        /// </summary>
        /// <returns></returns>
        public void DpFunc(List<WmsRoad> roads, List<string> pointIds, Dictionary<string, bool> isVisited, string sPointId, string ePointId, dynamic ArrivedEpoint)
        {
            var sRoads = roads.FindAll(x => x.startpoint_id == sPointId).ToList();
            var sRoads_EPointIds = sRoads.Select(x => x.endpoint_id).ToList();

            if (!isVisited[sPointId])
            {
                pointIds.Add(sPointId);
                set.Add(roads?.Find(x => x.startpoint_id == sPointId)?.startpoint_code!);
                isVisited[sPointId] = true;
            }

            if (sRoads_EPointIds.Contains(ePointId)) //判断是否到达终点
            {
                ArrivedEpoint.isArrivedEpoint = true;
                pointIds.Add(ePointId);
                foreach (var kvp in isVisited)
                {
                    isVisited[kvp.Key] = true;
                }
                return;
            }
            if (sRoads_EPointIds?.Count > 0)
            {
                var subRoads = roads?.FindAll(x => sRoads_EPointIds.Contains(x.startpoint_id) && !isVisited[x.endpoint_id]);
                if (subRoads?.Count > 0)
                {
                    for (int i = 0; i < subRoads.Count; i++)
                    {
                        var sIdx = subRoads[i].startpoint_id;
                        if (!isVisited[sIdx])
                        {
                            DpFunc(roads, pointIds, isVisited, sIdx, ePointId, ArrivedEpoint);
                        }
                    }
                }
            }
            if (!ArrivedEpoint.isArrivedEpoint)
            {
                pointIds.Remove(sPointId);
            }
        }
    }
}