using Sln.Wcs.HikRoBotSdk;
using Sln.Wcs.HikRoBotSdk.Dto.GenAgvSchedulingTask;
using Sln.Wcs.HoistSdk;
using Sln.Wcs.HoistSdk.Dto.HoistTaskExecutor;
using Sln.Wcs.Model.Domain;
using Sln.Wcs.Repository.service;

namespace Sln.Wcs.Strategy;

/// <summary>
/// 任务执行策略 - 轮询数据库中待执行的任务，根据设备类型调用对应 SDK 下发
/// </summary>
public class TaskExecuteStrategy : ITaskExecuteStrategy
{
    private readonly ILiveTaskQueueService _taskQueueService;
    private readonly ILiveTaskDetailService _taskDetailService;
    private readonly IHIKRoBotSdk _hikRobotSdk;
    private readonly IHoistSdk _hoistSdk;

    public TaskExecuteStrategy(
        ILiveTaskQueueService taskQueueService,
        ILiveTaskDetailService taskDetailService,
        IHIKRoBotSdk hikRobotSdk,
        IHoistSdk hoistSdk)
    {
        _taskQueueService = taskQueueService;
        _taskDetailService = taskDetailService;
        _hikRobotSdk = hikRobotSdk;
        _hoistSdk = hoistSdk;
    }

    /// <summary>
    /// 执行一轮任务调度：查询所有待执行任务，按设备类型下发
    /// </summary>
    public Task<int> ExecuteAsync()
    {
        return Task.Run(() =>
        {
            // 1. 查询所有待执行的任务队列（task_status = 1）
            var pendingTasks = _taskQueueService.Query(x => x.taskStatus == 1);

            if (pendingTasks.Count == 0)
                return 0;

            int dispatchedCount = 0;

            foreach (var task in pendingTasks)
            {
                try
                {
                    // 2. 查询任务明细
                    var details = _taskDetailService.Query(x => x.taskCode == task.taskCode);

                    if (details.Count == 0)
                        continue;

                    // 3. 取第一个未执行的明细步骤
                    var currentDetail = details
                        .Where(x => x.taskStatus == 1)
                        .OrderBy(x => x.objId)
                        .FirstOrDefault();

                    if (currentDetail == null)
                        continue;

                    // 4. 根据设备类型下发任务
                    var success = DispatchByDeviceType(currentDetail);

                    if (success)
                    {
                        // 5. 更新明细状态为执行中
                        currentDetail.taskStatus = 2;
                        _taskDetailService.Update(currentDetail);

                        // 6. 更新队列状态为执行中
                        task.taskStatus = 2;
                        _taskQueueService.Update(task);

                        dispatchedCount++;
                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine($"任务 {task.taskCode} 下发失败: {ex.Message}");
                }
            }

            return dispatchedCount;
        });
    }

    /// <summary>
    /// 根据设备类型分发到对应 SDK
    /// </summary>
    private bool DispatchByDeviceType(LiveTaskDetail detail)
    {
        return detail.deviceType switch
        {
            1 => DispatchToAgv(detail),
            2 => DispatchToHoist(detail),
            _ => throw new NotSupportedException($"不支持的设备类型: {detail.deviceType}")
        };
    }

    /// <summary>
    /// 下发 AGV 任务（海康机器人 SDK）
    /// </summary>
    private bool DispatchToAgv(LiveTaskDetail detail)
    {
        var dto = new GenAgvSchedulingTaskDto
        {
            reqCode = detail.taskCode,
            reqTime = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"),
            clientCode = "WCS",
            taskCode = detail.taskCode,
            taskTyp = detail.taskType switch
            {
                1 => "1", // 入库
                2 => "2", // 出库
                _ => "0"
            },
            taskMode = detail.taskType switch
            {
                1 => "2", // 入库 move
                2 => "1", // 出库 move
                _ => "0"
            },
            wbCode = detail.startPoint,
            ctnrCode = detail.palletBarcode,
            materialLot = detail.materialBarcode,
            positionCodePath = new List<Position>
            {
                new() { positionCode = detail.startPoint, type = "00" },
                new() { positionCode = detail.endPoint, type = "00" }
            }
        };

        var result = _hikRobotSdk.GenAgvSchedulingTask(dto);
        return result.code == "0";
    }

    /// <summary>
    /// 下发提升机任务（Hoist SDK）
    /// </summary>
    private bool DispatchToHoist(LiveTaskDetail detail)
    {
        var dto = new HoistTaskExeDto
        {
            hoistCode = detail.startPoint,
            taskCode = detail.taskCode,
            startPoint = ParseIntPoint(detail.startPoint),
            endPoint = ParseIntPoint(detail.endPoint)
        };

        var result = _hoistSdk.HoistTaskExecutor(dto);
        return result.code == "0";
    }

    /// <summary>
    /// 将位置字符串转为整数楼层/层号
    /// </summary>
    private static int ParseIntPoint(string? point)
    {
        if (string.IsNullOrEmpty(point))
            return 0;

        return int.TryParse(point, out var val) ? val : 0;
    }
}