using SqlSugar;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using wms.dto.response.sx;
using wms.sqlsugar.model.sx;

namespace wms.service.Extensions
{
    /// <summary>
    /// 时效服务扩展
    /// </summary>
    public static class SxServiceExtension
    {
        /// <summary>
        /// 装箱时处理焊点盘
        /// </summary>
        /// <param name="rule">箱号对应的装箱规则</param>
        /// <param name="invlist">库存信息</param>
        /// <param name="outInvlist">后续可用的不带焊点盘信息</param>
        /// <returns>填充后的焊点盘列表</returns>
        public static List<StockTemp> ProcessWeldingPointsBoxing(BillPboxrule rule, IEnumerable<StockTemp>? invlist, out IEnumerable<StockTemp>? outInvlist)
        {
            var solderinvlist = new List<StockTemp>();
            invlist ??= Enumerable.Empty<StockTemp>();

            // 如果不控制焊点盘数，则直接按生产时间排序后返回
            if (rule.SolderMaxCount <= 0)
            {
                outInvlist = invlist.OrderBy(p => p.ProductTime);
                return solderinvlist;
            }

            // 计算需要获取的焊点盘数量
            int itemsPerBox = (rule.SpoolType == "BS60" || rule.SpoolType == "BS40") ? 72 : 36;
            int requiredSolderBoxes = Math.Max(0, rule.FullCountQty / itemsPerBox * rule.SolderMaxCount);

            // 获取所有带焊点的盘并排序
            var availableSolders = invlist.Where(p => p.SolderCount > 0).OrderBy(p => p.ProductTime).ThenByDescending(p => p.SolderCount).ToList();

            // 根据是否管控总焊点数量来选择不同的策略
            if (rule.PerSolderMaxCount <= 0)
            {
                // 不管控总焊点数量，直接取前 N 个
                solderinvlist = availableSolders.Take(requiredSolderBoxes).ToList();
            }
            else
            {
                // 管控总焊点数量，使用 GetWeldingPointsBoxing 方法
                solderinvlist = GetWeldingPointsBoxing(
                    currentBoxes: solderinvlist,
                    maxBoxCount: requiredSolderBoxes,
                    maxTotalSolderCount: rule.PerSolderMaxCount,
                    inventory: availableSolders
                );
            }

            // 剩余可用库存为无焊点的
            outInvlist = invlist.Where(p => p.SolderCount == 0);

            return solderinvlist;
        }

        /// <summary>
        /// 获取焊点盘（装箱处理）
        /// </summary>
        /// <param name="currentBoxes">已有的焊点盘</param>
        /// <param name="maxBoxCount">最大焊点盘数</param>
        /// <param name="maxTotalSolderCount">最大焊点总数</param>
        /// <param name="inventory">库存信息</param>
        /// <returns>填充后的焊点盘列表</returns>
        public static List<StockTemp> GetWeldingPointsBoxing(List<StockTemp> currentBoxes, int maxBoxCount, int maxTotalSolderCount, IEnumerable<StockTemp>? inventory)
        {
            if (inventory == null || !inventory.Any()) return currentBoxes;

            // 当前状态统计
            var currentBoxCount = currentBoxes.Count;
            var currentTotalSolderCount = currentBoxes.Sum(x => x.SolderCount);

            // 如果已经满载，直接返回
            if (currentBoxCount >= maxBoxCount || currentTotalSolderCount >= maxTotalSolderCount) return currentBoxes;

            // 将库存转换为列表并排序，避免重复排序
            var availableInventory = inventory.Where(p => p.SolderCount > 0).OrderBy(p => p.ProductTime).ThenByDescending(p => p.SolderCount).ToList();

            foreach (var item in availableInventory)
            {
                // 判断是否还能继续添加
                if (currentBoxCount >= maxBoxCount || currentTotalSolderCount >= maxTotalSolderCount) break;

                // 添加当前项
                currentBoxes.Add(item);
                currentBoxCount++;
                currentTotalSolderCount += item.SolderCount;
            }

            return currentBoxes;
        }
    }
}