using Newtonsoft.Json;
using System.Diagnostics.CodeAnalysis;
using WIDESEA_Core;
using WIDESEAWCS_Common.HttpEnum;
using WIDESEAWCS_Common.TaskEnum;
using WIDESEAWCS_Core;
using WIDESEAWCS_ITaskInfoService;
using WIDESEAWCS_Model.Models;
using WIDESEAWCS_QuartzJob;
using WIDESEAWCS_QuartzJob.Models;
using WIDESEAWCS_QuartzJob.Service;

namespace WIDESEAWCS_Tasks
{
    /// <summary>
    /// 堆垛机任务选择器：封装任务挑选与站台可用性判断。
    /// </summary>
    public class StackerCraneTaskSelector
    {
        private readonly ITaskService _taskService;
        private readonly IRouterService _routerService;
        private readonly Func<int, Dt_Task?> _transferCheck;

        public StackerCraneTaskSelector(ITaskService taskService, IRouterService routerService, HttpClientHelper httpClientHelper)
            : this(taskService, routerService, taskNum => QueryTransferTask(httpClientHelper, taskNum))
        {
        }

        public StackerCraneTaskSelector(ITaskService taskService, IRouterService routerService, Func<int, Dt_Task?> transferCheck)
        {
            _taskService = taskService;
            _routerService = routerService;
            _transferCheck = transferCheck;
        }

        public Dt_Task? SelectTask(IStackerCrane commonStackerCrane)
        {
            Dt_Task? candidateTask;
            if (commonStackerCrane.LastTaskType == null)
            {
                candidateTask = _taskService.QueryStackerCraneTask(commonStackerCrane.DeviceCode);
            }
            else if (commonStackerCrane.LastTaskType.GetValueOrDefault().GetTaskTypeGroup() == TaskTypeGroup.OutbondGroup)
            {
                candidateTask = _taskService.QueryStackerCraneInTask(commonStackerCrane.DeviceCode);
                candidateTask ??= _taskService.QueryStackerCraneOutTask(commonStackerCrane.DeviceCode);
            }
            else
            {
                candidateTask = _taskService.QueryStackerCraneOutTask(commonStackerCrane.DeviceCode);
            }

            if (candidateTask == null)
            {
                return null;
            }

            if (candidateTask.TaskType.GetTaskTypeGroup() != TaskTypeGroup.OutbondGroup)
            {
                return candidateTask;
            }

            Dt_Task? selectedTask = TrySelectOutboundTask(candidateTask);
            if (selectedTask != null)
            {
                return selectedTask;
            }

            var otherOutStationCodes = _routerService
                .QueryNextRoutes(commonStackerCrane.DeviceCode, candidateTask.NextAddress, candidateTask.TaskType)
                .Select(x => x.ChildPosi)
                .ToList();

            var tasks = _taskService.QueryStackerCraneOutTasks(commonStackerCrane.DeviceCode, otherOutStationCodes);
            foreach (var alternativeTask in tasks)
            {
                selectedTask = TrySelectOutboundTask(alternativeTask);
                if (selectedTask != null)
                {
                    return selectedTask;
                }
            }

            return _taskService.QueryStackerCraneInTask(commonStackerCrane.DeviceCode);
        }

        private Dt_Task? TrySelectOutboundTask(Dt_Task outboundTask)
        {
            // 只要是出库任务，必须先调用WMS判断是否需要移库。
            var taskAfterTransferCheck = _transferCheck(outboundTask.TaskNum) ?? outboundTask;
            var taskGroup = taskAfterTransferCheck.TaskType.GetTaskTypeGroup();

            if (taskGroup == TaskTypeGroup.RelocationGroup || taskGroup == TaskTypeGroup.OutbondGroup)
            {
                TryAddTaskFromWms(taskAfterTransferCheck);
            }

            if (taskGroup == TaskTypeGroup.RelocationGroup)
            {
                return taskAfterTransferCheck;
            }

            if (taskGroup != TaskTypeGroup.OutbondGroup)
            {
                return taskAfterTransferCheck;
            }

            return IsOutTaskStationAvailable(taskAfterTransferCheck) ? taskAfterTransferCheck : null;
        }

        private static Dt_Task? QueryTransferTask(HttpClientHelper httpClientHelper, int taskNum)
        {
            var response = httpClientHelper.Post<WebResponseContent>(
                nameof(ConfigKey.TransferCheck),
                taskNum.ToString());

            if (response == null || !response.IsSuccess || response.Data == null || !response.Data.Status || response.Data.Data == null)
            {
                return null;
            }

            var taskJson = response.Data.Data.ToString();
            return string.IsNullOrWhiteSpace(taskJson) ? null : JsonConvert.DeserializeObject<Dt_Task>(taskJson);
        }

        private void TryAddTaskFromWms(Dt_Task task)
        {
            if (task.TaskNum <= 0)
            {
                return;
            }

            var existingTask = _taskService.QueryByTaskNum(task.TaskNum);
            if (existingTask != null)
            {
                return;
            }

            _taskService.AddData(task);
        }

        private bool IsOutTaskStationAvailable([NotNull] Dt_Task task)
        {
            Dt_Router? router = _routerService.QueryNextRoute(task.Roadway, task.NextAddress, task.TaskType);
            if (router == null)
            {
                _taskService.UpdateTaskExceptionMessage(task.TaskNum, $"未找到站台【{task.NextAddress}】信息，无法校验站台");
                return false;
            }

            IDevice? device = Storage.Devices.FirstOrDefault(x => x.DeviceCode == router.ChildPosiDeviceCode);
            if (device == null)
            {
                _taskService.UpdateTaskExceptionMessage(task.TaskNum, $"未找到出库站台【{router.ChildPosiDeviceCode}】对应的通讯对象，无法判断出库站台是否被占用");
                return false;
            }

            CommonConveyorLine conveyorLine = (CommonConveyorLine)device;
            return conveyorLine.IsOccupied(router.ChildPosi);
        }
    }
}