using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using AutoMapper;
using HslCommunication.WebSocket;
using WIDESEAWCS_BasicInfoRepository;
using WIDESEAWCS_BasicInfoService;
using WIDESEAWCS_Common;
using WIDESEAWCS_Core;
using WIDESEAWCS_Core.BaseRepository;
using WIDESEAWCS_Core.BaseServices;
using WIDESEAWCS_Core.Helper;
using WIDESEAWCS_DTO.BasicInfo;
using WIDESEAWCS_DTO.PlacedBlockDTO;
using WIDESEAWCS_DTO.TaskInfo;
using WIDESEAWCS_IBasicInfoRepository;
using WIDESEAWCS_IBasicInfoService;
using WIDESEAWCS_ITaskInfoRepository;
using WIDESEAWCS_Model.Models;

namespace WIDESEAWCS_BasicInfoService
{
    /// <summary>
    /// 容器服务类，提供容器相关的业务逻辑操作
    /// </summary>
    /// <remarks>
    /// 主要功能包括： <br/>
    /// 1. 获取物品在容器中的放置位置 <br/>
    /// 2. 处理异常工位的位置分配 <br/>
    /// 3. 根据订单或尺寸获取合适的位置 <br/>
    /// 4. 释放容器资源 <br/>
    /// 使用依赖注入方式获取仓储接口和工作单元管理
    /// </remarks>
    public class ContainerService : ServiceBase<Dt_Container, IContainerRepository>, IContainerService
    {
        /// <summary>
        /// 用于对象映射的映射器实例
        /// </summary>
        private readonly IMapper _mapper;
        /// <summary>
        /// 工作单元管理接口实例，用于管理数据库事务和工作单元
        /// </summary>
        private readonly IUnitOfWorkManage _unitOfWorkManage;
        /// <summary>
        /// 容器物品仓储接口实例
        /// </summary>
        private readonly IContainerItemRepository _containerItemRepository;
        /// <summary>
        /// 订单容器仓储接口实例
        /// </summary>
        private readonly IOrderContainerRepository _orderContainerRepository;
        /// <summary>
        /// 任务仓储接口实例，用于操作任务数据
        /// </summary>
        private readonly ITaskRepository _taskRepository;
        /// <summary>
        /// WebSocket服务器实例，用于处理实时通信
        /// </summary>
        private readonly WebSocketServer _webSocketServer;

        /// <summary>
        /// 容器服务构造函数
        /// </summary>
        /// <param name="BaseDal">容器仓储接口</param>
        /// <param name="mapper">对象映射器</param>
        /// <param name="unitOfWorkManage">工作单元管理器</param>
        /// <param name="containerItemRepository">容器项仓储接口</param>
        /// <param name="orderContainerRepository">订单容器仓储接口</param>
        /// <param name="taskRepository">任务仓储接口</param>
        /// <param name="webSocketServer">WebSocket服务实例</param>
        public ContainerService(IContainerRepository BaseDal, IMapper mapper, IUnitOfWorkManage unitOfWorkManage, IContainerItemRepository containerItemRepository, IOrderContainerRepository orderContainerRepository, ITaskRepository taskRepository, WebSocketServer webSocketServer) : base(BaseDal)
        {
            _mapper = mapper;
            _unitOfWorkManage = unitOfWorkManage;
            _containerItemRepository = containerItemRepository;
            _orderContainerRepository = orderContainerRepository;
            _taskRepository = taskRepository;
            _webSocketServer = webSocketServer;
        }

        /// <summary>
        /// 获取任务位置信息
        /// </summary>
        /// <param name="length">物品长度</param>
        /// <param name="width">物品宽度</param>
        /// <param name="height">物品高度</param>
        /// <param name="containerSize">容器尺寸</param>
        /// <param name="placedBlocks">已放置块列表</param>
        /// <param name="edge">边缘参数</param>
        /// <returns>返回任务位置信息，若放置失败则返回null</returns>
        /// <exception cref="Exception">当放置过程中发生错误时抛出异常</exception>
        public TaskPosition? GetTaskPosition(int length, int width, int height, ContainerSize containerSize, List<PlacedBlock> placedBlocks, int edge)
        {
            try
            {
                PlaceBlockService placeBlockService = new PlaceBlockService(containerSize, placedBlocks);

                TaskPosition? taskPosition = placeBlockService.PlaceBlock(length, width, height, edge);
                return taskPosition;
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }

        /// <summary>
        /// 获取异常工位位置
        /// </summary>
        /// <param name="length">物品长度</param>
        /// <param name="width">物品宽度</param>
        /// <param name="height">物品高度</param>
        /// <returns>元组包含三个值：是否成功获取、任务位置对象(失败时为null)、错误信息(成功时为空)</returns>
        /// <remarks>
        /// 当异常容器中物品数量≥5时，使用固定Z轴位置99；否则根据当前物品数量计算位置
        /// </remarks>
        public (bool, TaskPosition?, string) GetExceptionPosition(int length, int width, int height)
        {
            Dt_Container? container = Db.Queryable<Dt_Container>().Where(x => x.ContainerType == ContainerTypeEnum.ExceptionContainer.ObjToInt()).Includes(x => x.Items).First();
            if (container == null)
            {
                return (false, null, "请配置异常工位");
            }

            if (container.Items.Count >= 5)
            {
                ContainerSize containerSize = new ContainerSize(container.ContainerLength, container.ContainerWidth, container.ContainerHeight);
                ExceptionPlaceBlockService exceptionPlaceBlockService = new ExceptionPlaceBlockService(containerSize);
                TaskPosition taskPosition = exceptionPlaceBlockService.ExceptionPlaceBlock(length, width, height, 0);
                taskPosition.TakeCenterPositionZ = 99;
                taskPosition.PutPosition = container.ContainerCode;
                if (LightStatusStorage.LightStatusDic.ContainsKey(container.ContainerCode))
                {
                    LightStatusStorage.LightStatusDic[container.ContainerCode] = LightStatusEnum.LightError;
                }
                return (true, taskPosition, "");
            }
            else
            {
                ContainerSize containerSize = new ContainerSize(container.ContainerLength, container.ContainerWidth, container.ContainerHeight);
                ExceptionPlaceBlockService exceptionPlaceBlockService = new ExceptionPlaceBlockService(containerSize);
                TaskPosition taskPosition = exceptionPlaceBlockService.ExceptionPlaceBlock(length, width, height, container.Items.Count);
                taskPosition.PutPosition = container.ContainerCode;
                return (true, taskPosition, "");
            }

        }

        /// <summary>
        /// 根据订单信息或尺寸获取任务位置
        /// </summary>
        /// <param name="orderId">订单ID</param>
        /// <param name="orderNo">订单编号</param>
        /// <param name="length">长度</param>
        /// <param name="width">宽度</param>
        /// <param name="height">高度</param>
        /// <returns>
        /// 返回元组包含三个值： <br/>
        /// Item1 - 是否成功获取位置 <br/>
        /// Item2 - 获取到的任务位置对象，可能为null <br/>
        /// Item3 - 错误代码，成功时返回空字符串
        /// </returns>
        public (bool, TaskPosition?, string) GetPosition(int orderId, string orderNo, int length, int width, int height)
        {
            TaskPosition? taskPosition = GetPositionByOrder(orderId, orderNo, length, width, height);
            if (taskPosition != null)
            {
                return (true, taskPosition, "");
            }
            taskPosition = GetPosition(length, width, height);
            if (taskPosition != null)
            {
                return (true, taskPosition, "");
            }
            return (false, null, "10001");
        }

        /// <summary>
        /// 根据物品尺寸获取合适的容器位置
        /// </summary>
        /// <param name="length">物品长度</param>
        /// <param name="width">物品宽度</param>
        /// <param name="height">物品高度</param>
        /// <returns>返回找到的任务位置信息，包含容器编码；若未找到合适位置则返回null</returns>
        /// <remarks>
        /// 该方法会查询所有可用空容器，并根据物品尺寸和容器状态判断是否适合放置。 <br/>
        /// 对于超大物品(长或宽超过1600)或有特殊要求的容器会进行特殊处理。
        /// </remarks>
        public TaskPosition? GetPosition(int length, int width, int height)
        {
            List<Dt_Container> containers = Db.Queryable<Dt_Container>().Where(x => x.ContainerType == ContainerTypeEnum.PutContainer.ObjToInt()).Includes(x => x.Items).ToList();

            Dt_Container? container = containers.OrderBy(x => x.ContainerSort).FirstOrDefault(x => x.ContainerStatus == ContainerStatusEnum.Empty.ObjToInt() && x.ContainerEnable);
            List<PlacedBlock> placedBlocks = new List<PlacedBlock>();
            if (container != null)
            {
                int edge = 0;
                if (container.ContainerNo == containers.Where(x => x.DeviceCode == container.DeviceCode && x.ContainerType == ContainerTypeEnum.PutContainer.ObjToInt()).Min(x => x.ContainerNo))
                {
                    edge = 1;
                }
                int containerLength = container.ContainerLength;
                int containerWidth = container.ContainerWidth;
                int maxValue = Math.Max(length, width);
                int minValue = Math.Min(length, width);
                if (minValue > container.ContainerWidth)
                {
                    containerLength = maxValue;
                    containerWidth = minValue;
                }
                ContainerSize containerSize = new ContainerSize(containerLength, containerWidth, container.ContainerHeight);
                TaskPosition? taskPosition = GetTaskPosition(length, width, height, containerSize, placedBlocks, edge);
                if (taskPosition != null)
                {
                    taskPosition.PutPosition = container.ContainerCode;
                    return taskPosition;
                }
            }

            return null;
        }

        /// <summary>
        /// 获取指定容器中的可用位置
        /// </summary>
        /// <param name="container">目标容器对象</param>
        /// <param name="length">待放置物品长度</param>
        /// <param name="width">待放置物品宽度</param>
        /// <param name="height">待放置物品高度</param>
        /// <returns>元组包含： <br/>
        ///   - bool: 是否找到合适位置 <br/>
        ///   - TaskPosition?: 找到的任务位置信息(可为null) <br/>
        ///   - string: 错误代码(成功时返回空字符串)
        /// </returns>
        /// <remarks>
        /// 方法会检查容器尺寸是否满足物品放置要求， <br/>
        /// 并考虑容器边缘情况计算最佳放置位置
        /// </remarks>
        public (bool, TaskPosition?, string) GetPosition(Dt_Container container, int length, int width, int height)
        {
            List<Dt_Container> containers = Db.Queryable<Dt_Container>().Where(x => x.ContainerType == ContainerTypeEnum.PutContainer.ObjToInt()).Includes(x => x.Items).ToList();
            List<PlacedBlock> placedBlocks = new List<PlacedBlock>();
            if (container != null)
            {
                int edge = 0;
                if (container.ContainerNo == containers.Where(x => x.DeviceCode == container.DeviceCode && x.ContainerType == ContainerTypeEnum.PutContainer.ObjToInt()).Min(x => x.ContainerNo))
                {
                    edge = 1;
                }
                int containerLength = container.ContainerLength;
                int containerWidth = container.ContainerWidth;
                int maxValue = Math.Max(length, width);
                int minValue = Math.Min(length, width);
                if (minValue > container.ContainerWidth)
                {
                    containerLength = maxValue;
                    containerWidth = minValue;
                }
                ContainerSize containerSize = new ContainerSize(containerLength, containerWidth, container.ContainerHeight);
                TaskPosition? taskPosition = GetTaskPosition(length, width, height, containerSize, placedBlocks, edge);
                if (taskPosition != null)
                {
                    taskPosition.PutPosition = container.ContainerCode;
                    return (true, taskPosition, "");
                }
            }

            return (false, null, "10002");
        }

        /// <summary>
        /// 根据订单信息获取可用货位位置
        /// </summary>
        /// <param name="orderId">订单ID</param>
        /// <param name="orderNo">订单编号</param>
        /// <param name="length">物品长度</param>
        /// <param name="width">物品宽度</param>
        /// <param name="height">物品高度</param>
        /// <returns>返回符合条件的任务位置信息，若找不到则返回null</returns>
        /// <remarks>
        /// 该方法会查询订单关联的容器，并检查每个容器中已放置物品的布局， <br/>
        /// 通过算法计算新物品在容器中的最佳放置位置
        /// </remarks>
        public TaskPosition? GetPositionByOrder(int orderId, string orderNo, int length, int width, int height)
        {
            List<Dt_OrderContainer> orderContainers = Db.Queryable<Dt_OrderContainer>().Where(it => it.OrderNo == orderNo && it.OrderId == orderId).ToList();
            if (orderContainers != null && orderContainers.Count > 0)
            {
                List<Dt_Container> dt_Containers = Db.Queryable<Dt_Container>().ToList();

                List<Dt_Container> containers = dt_Containers.Where(it => orderContainers.Any(x => x.ContainerId == it.Id && x.ContainerCode == it.ContainerCode) && it.ContainerEnable && it.ContainerStatus != ContainerStatusEnum.ReadyRelease.ObjToInt()).ToList().OrderBy(x => x.ContainerSort).ToList();

                for (int i = 0; i < containers.Count; i++)
                {
                    containers[i].Items = Db.Queryable<Dt_ContainerItem>().Where(x => x.ContainerId == containers[i].Id).ToList();
                }

                foreach (var container in containers)
                {
                    List<PlacedBlock> placedBlocks = new List<PlacedBlock>();

                    foreach (var item in container.Items)
                    {
                        int tempLength = item.ItemLength;
                        int tempWidth = item.ItemWidth;

                        if (item.ItemLength < item.ItemWidth)
                        {
                            tempLength = item.ItemWidth;
                            tempWidth = item.ItemLength;
                        }

                        Point3D point3D = new Point3D(item.ItemPositionX, item.ItemPositionY, item.ItemPositionZ);
                        placedBlocks.Add(new PlacedBlock(point3D, tempLength, tempWidth, item.ItemHeight));
                    }
                    Dt_OrderContainer? orderContainer = orderContainers.FirstOrDefault(x => x.ContainerId == container.Id && x.ContainerCode == container.ContainerCode);
                    if (orderContainer == null)
                    {
                        continue;
                    }

                    int edge = 0;
                    if (container.ContainerNo == dt_Containers.Where(x => x.DeviceCode == container.DeviceCode && x.ContainerType == ContainerTypeEnum.PutContainer.ObjToInt()).Min(x => x.ContainerNo))
                    {
                        edge = 1;
                    }

                    ContainerSize containerSize = new ContainerSize(orderContainer.MaxLength, orderContainer.MaxWidth, container.ContainerHeight);
                    TaskPosition? taskPosition = GetTaskPosition(length, width, height, containerSize, placedBlocks, edge);
                    if (taskPosition != null)
                    {
                        taskPosition.PutPosition = container.ContainerCode;
                        return taskPosition;
                    }
                }
            }
            return null;
        }

        /// <summary>
        /// 释放指定容器及其关联项
        /// </summary>
        /// <param name="keys">容器ID数组</param>
        /// <returns>操作结果响应</returns>
        /// <remarks>
        /// 1. 查询并获取指定容器及其关联项 <br/>
        /// 2. 更新容器状态为空闲 <br/>
        /// 3. 在事务中执行以下操作： <br/>
        ///    - 删除容器项并移入历史表 <br/>
        ///    - 删除订单容器关联并移入历史表 <br/>
        ///    - 更新容器状态 <br/>
        /// 4. 操作成功返回OK，失败回滚事务并返回错误信息
        /// </remarks>
        public WebResponseContent ReleaseContainer(int[] keys)
        {
            try
            {
                List<Dt_Container> containers = Db.Queryable<Dt_Container>().Where(x => keys.Contains(x.Id)).Includes(x => x.Items).ToList();
                List<Dt_ContainerItem> containerItems = new List<Dt_ContainerItem>();
                List<Dt_OrderContainer> orderContainers = Db.Queryable<Dt_OrderContainer>().Where(x => containers.Select(x => x.Id).ToList().Contains(x.ContainerId)).ToList();

                for (int i = 0; i < containers.Count; i++)
                {
                    containers[i].ContainerStatus = ContainerStatusEnum.Empty.ObjToInt();
                    containerItems.AddRange(containers[i].Items);
                }

                _unitOfWorkManage.BeginTran();
                _containerItemRepository.DeleteAndMoveIntoHty(containerItems, App.User?.UserId > 0 ? WIDESEAWCS_Core.Enums.OperateTypeEnum.人工删除 : WIDESEAWCS_Core.Enums.OperateTypeEnum.自动删除);
                _orderContainerRepository.DeleteAndMoveIntoHty(orderContainers, App.User?.UserId > 0 ? WIDESEAWCS_Core.Enums.OperateTypeEnum.人工删除 : WIDESEAWCS_Core.Enums.OperateTypeEnum.自动删除);
                Db.Updateable(containers).ExecuteCommand();
                _unitOfWorkManage.CommitTran();
                return WebResponseContent.Instance.OK();
            }
            catch (Exception ex)
            {
                _unitOfWorkManage.RollbackTran();
                return WebResponseContent.Instance.Error(ex.Message);
            }
        }

        public WebResponseContent AutoReleaseContainer(int[] keys)
        {
            try
            {
                List<Dt_Container> containers = Db.Queryable<Dt_Container>().Where(x => keys.Contains(x.Id)).Includes(x => x.Items).ToList();

                for (int i = 0; i < containers.Count; i++)
                {
                    AutoReleaseContainer(containers[i].ContainerCode);
                }

                return WebResponseContent.Instance.OK();
            }
            catch (Exception ex)
            {
                return WebResponseContent.Instance.Error(ex.Message);
            }
        }

        /// <summary>
        /// 自动释放容器
        /// </summary>
        /// <param name="containerCode">容器编号</param>
        /// <returns>Web响应结果</returns>
        /// <remarks>
        /// 1. 根据容器编号查询容器信息 <br/>
        /// 2. 检查容器是否存在关联任务 <br/>
        /// 3. 若无任务则清空容器状态并删除订单容器记录 <br/>
        /// 4. 若有任务则更新任务状态为"龙门架重新分配" <br/>
        /// 5. 事务处理所有数据库操作
        /// </remarks>
        public WebResponseContent AutoReleaseContainer(string containerCode)
        {
            try
            {
                Dt_Container container = BaseDal.QueryFirst(x => x.ContainerCode == containerCode);
                if (container == null)
                {
                    return WebResponseContent.Instance.Error("容器不存在");
                }

                if (container.ContainerStatus == ContainerStatusEnum.Empty.ObjToInt())
                {
                    return WebResponseContent.Instance.Error("容器已处于空闲状态");
                }

                if (container.ContainerType == ContainerTypeEnum.ExceptionContainer.ObjToInt())
                {
                    if (container.Items != null && container.Items.Count > 0)
                    {
                        _containerItemRepository.DeleteAndMoveIntoHty(container.Items, App.User?.UserId > 0 ? WIDESEAWCS_Core.Enums.OperateTypeEnum.人工删除 : WIDESEAWCS_Core.Enums.OperateTypeEnum.自动删除);
                    }
                    return WebResponseContent.Instance.OK("异常工位已释放");
                }
                List<Dt_Task> tasks = _taskRepository.QueryData(x => x.NextAddress.Contains(container.ContainerCode));

                Dt_OrderContainer orderContainer = _orderContainerRepository.QueryFirst(x => x.ContainerCode == container.ContainerCode && x.ContainerId == container.Id);

                if (tasks != null && tasks.Count > 0)
                {
                    List<string> codes = tasks.Select(x => x.PalletCode).ToList();

                    container.Items = _containerItemRepository.QueryData(x => x.ContainerId == container.Id && !codes.Contains(x.ItemCode));

                    if (container.ContainerType == ContainerTypeEnum.ExceptionContainer.ObjToInt())
                    {
                        tasks.ForEach(x =>
                        {
                            if (x.TaskState == TaskStatusEnum.Gantry_BeRelease.ObjToInt())
                            {
                                x.TaskState = TaskStatusEnum.Gantry_New.ObjToInt();
                            }
                        });
                    }
                    else
                    {
                        tasks.ForEach(x =>
                        {
                            if (x.TaskState == TaskStatusEnum.Gantry_Wait.ObjToInt())
                            {
                                x.TaskState = TaskStatusEnum.Gantry_BeReassign.ObjToInt();
                            }
                        });
                    }
                }
                else
                {
                    container.Items = _containerItemRepository.QueryData(x => x.ContainerId == container.Id);
                }

                _unitOfWorkManage.BeginTran();
                if (container.Items != null && container.Items.Count > 0)
                {
                    _containerItemRepository.DeleteAndMoveIntoHty(container.Items, App.User?.UserId > 0 ? WIDESEAWCS_Core.Enums.OperateTypeEnum.人工删除 : WIDESEAWCS_Core.Enums.OperateTypeEnum.自动删除);
                }

                if (tasks == null || tasks.Count == 0)
                {
                    container.ContainerStatus = ContainerStatusEnum.Empty.ObjToInt();

                    BaseDal.UpdateData(container);
                    if (orderContainer != null)
                    {
                        _orderContainerRepository.DeleteAndMoveIntoHty(orderContainer, App.User?.UserId > 0 ? WIDESEAWCS_Core.Enums.OperateTypeEnum.人工删除 : WIDESEAWCS_Core.Enums.OperateTypeEnum.自动删除);
                    }
                }
                else
                {
                    orderContainer.MaxLength = container.ContainerLength;
                    orderContainer.MaxWidth = container.ContainerWidth;
                    _orderContainerRepository.UpdateData(orderContainer);
                    _taskRepository.UpdateData(tasks);
                }

                _unitOfWorkManage.CommitTran();

                //_webSocketServer发送数据
                _webSocketServer.PublishAllClientPayload(new
                {
                    stationCode = container.ContainerCode,
                    release = 1,
                }.Serialize());

                return WebResponseContent.Instance.OK();
            }
            catch (Exception ex)
            {
                _unitOfWorkManage.RollbackTran();
                return WebResponseContent.Instance.Error(ex.Message);
            }
        }
    }
}