using System.ComponentModel;
using System.Reflection;
using Newtonsoft.Json;
using WIDESEA_Common.TaskEnum;
using WIDESEA_Core;
using WIDESEA_Core.Helper;
using WIDESEA_DTO.Task;
using WIDESEA_Model.Models;

namespace WIDESEA_TaskInfoService
{
    public partial class TaskService
    {
        #region 手动任务

        /// <summary>
        /// 手动创建任务
        /// </summary>
        /// <param name="dto">手动创建任务参数</param>
        /// <returns></returns>
        public async Task<WebResponseContent> CreateManualTaskAsync(CreateManualTaskDto dto)
        {
            try
            {
                int taskType;
                int taskStatus;
                switch (dto.TaskType)
                {
                    case "入库":
                        taskType = TaskInboundTypeEnum.Inbound.GetHashCode();
                        taskStatus = TaskInStatusEnum.InNew.GetHashCode();
                        break;

                    case "出库":
                        taskType = TaskOutboundTypeEnum.Outbound.GetHashCode();
                        taskStatus = TaskOutStatusEnum.OutNew.GetHashCode();
                        break;

                    case "移库":
                        taskType = TaskRelocationTypeEnum.Relocation.GetHashCode();
                        taskStatus = TaskRelocationStatusEnum.RelocationNew.GetHashCode();
                        break;

                    default:
                        return WebResponseContent.Instance.Error($"不支持的任务类型: {dto.TaskType}");
                }

                int taskNum = await BaseDal.GetTaskNo();

                var task = new Dt_Task
                {
                    TaskNum = taskNum,
                    PalletCode = dto.Barcode,
                    SourceAddress = dto.SourceAddress,
                    TargetAddress = dto.TargetAddress,
                    TaskType = taskType,
                    TaskStatus = taskStatus,
                    Grade = dto.Grade,
                    Roadway = dto.TargetAddress,
                    WarehouseId = dto.WarehouseId,
                    CurrentAddress = dto.SourceAddress,
                    NextAddress = dto.TargetAddress,
                    Creater = "manual",
                    CreateDate = DateTime.Now,
                    ModifyDate = DateTime.Now
                };

                var wmsTaskDtos = new List<WMSTaskDTO>()
                {
                    new()
                    {
                        TaskNum = task.TaskNum,
                        PalletCode = task.PalletCode,
                        SourceAddress = task.SourceAddress,
                        TargetAddress = task.TargetAddress,
                        TaskType = task.TaskType,
                        Roadway = task.Roadway,
                        TaskStatus = task.TaskStatus,
                        WarehouseId = task.WarehouseId
                    }
                };

                return await _unitOfWorkManage.BeginTranAsync(async () =>
                {
                    // 保存到数据库并同步发送给WCS
                    var result = await BaseDal.AddDataAsync(task) > 0;
                    if (!result)
                        return WebResponseContent.Instance.Error("创建任务失败");

                    var wcsResult = _httpClientHelper.Post<WebResponseContent>(
                        "http://localhost:9292/api/Task/ReceiveManualTask",
                        wmsTaskDtos.ToJson());

                    if (!wcsResult.IsSuccess || !wcsResult.Data.Status)
                        return WebResponseContent.Instance.Error($"任务已创建但发送给WCS失败: {wcsResult.Data?.Message}");

                    return WebResponseContent.Instance.OK($"手动创建任务成功，任务号: {taskNum}");
                });
            }
            catch (Exception ex)
            {
                return WebResponseContent.Instance.Error($"手动创建任务异常: {ex.Message}");
            }
        }

        /// <summary>
        /// 手动下发任务到WCS（批量处理）
        /// </summary>
        /// <param name="dtos">下发任务参数列表</param>
        /// <returns>批量下发结果</returns>
        public async Task<WebResponseContent> DispatchTasksToWCSAsync(List<DispatchTaskDto> dtos)
        {
            try
            {
                if (dtos == null || !dtos.Any())
                    return WebResponseContent.Instance.Error("请选择要下发的任务");

                var resultDto = new DispatchResultDto
                {
                    SuccessCount = 0,
                    FailCount = 0,
                    FailResults = new List<DispatchTaskResultDto>()
                };

                // 第一步：查询并校验所有任务状态，收集有效任务
                var validTasks = new List<(DispatchTaskDto Dto, Dt_Task Task)>();

                foreach (var dto in dtos)
                {
                    var task = await BaseDal.QueryFirstAsync(t => t.TaskId == dto.TaskId);
                    if (task == null)
                    {
                        resultDto.FailResults.Add(new DispatchTaskResultDto
                        {
                            TaskId = dto.TaskId,
                            TaskNum = 0,
                            Success = false,
                            ErrorMessage = "任务不存在"
                        });
                        resultDto.FailCount++;
                        continue;
                    }

                    // 校验任务状态：仅入库新单/出库新单/移库新单可下发
                    bool canDispatch = false;
                    if (task.TaskType == TaskInboundTypeEnum.Inbound.GetHashCode()
                        && task.TaskStatus == TaskInStatusEnum.InNew.GetHashCode())
                        canDispatch = true;
                    else if (task.TaskType == TaskOutboundTypeEnum.Outbound.GetHashCode()
                        && task.TaskStatus == TaskOutStatusEnum.OutNew.GetHashCode())
                        canDispatch = true;
                    else if (task.TaskType == TaskRelocationTypeEnum.Relocation.GetHashCode()
                        && task.TaskStatus == TaskRelocationStatusEnum.RelocationNew.GetHashCode())
                        canDispatch = true;

                    if (!canDispatch)
                    {
                        var statusName = GetTaskStatusName(task.TaskType, task.TaskStatus);
                        resultDto.FailResults.Add(new DispatchTaskResultDto
                        {
                            TaskId = dto.TaskId,
                            TaskNum = task.TaskNum,
                            Success = false,
                            ErrorMessage = $"任务状态[{statusName}]不允许下发"
                        });
                        resultDto.FailCount++;
                        continue;
                    }

                    validTasks.Add((dto, task));
                }

                // 如果全部校验失败，直接返回
                if (validTasks.Count == 0)
                    return WebResponseContent.Instance.Error($"下发失败，共{resultDto.FailCount}个任务");

                // 第二步：构造所有WMSTaskDTO，一次性调用WCS
                var wmsTaskDtos = validTasks.Select(vt => new WMSTaskDTO
                {
                    Id = vt.Task.TaskId,
                    TaskNum = vt.Task.TaskNum,
                    PalletCode = vt.Dto.PalletCode,
                    SourceAddress = vt.Dto.SourceAddress,
                    TargetAddress = vt.Dto.TargetAddress,
                    CurrentAddress = vt.Dto.SourceAddress,
                    NextAddress = vt.Dto.TargetAddress,
                    TaskType = vt.Task.TaskType,
                    TaskStatus = vt.Task.TaskStatus,
                    Roadway = vt.Task.Roadway,
                    Grade = vt.Dto.Grade,
                    WarehouseId = vt.Task.WarehouseId,
                    PalletType = vt.Task.PalletType
                }).ToList();

                // 一次性调用WCS批量接口
                var wcsResult = _httpClientHelper.Post<WebResponseContent>(
                    "http://localhost:9292/api/Task/ReceiveManualTask",
                    wmsTaskDtos.ToJson());

                if (wcsResult == null || !wcsResult.IsSuccess)
                {
                    // WCS调用失败，所有任务都算失败
                    // 尝试从WCS响应中解析错误详情
                    string errorDetail = "";
                    if (wcsResult?.Data != null)
                    {
                        // 尝试将Data转换为错误信息
                        try
                        {
                            var errorData = wcsResult.Data.ToString();
                            errorDetail = $"WCS错误: {errorData}";
                        }
                        catch
                        {
                            errorDetail = wcsResult?.ErrorMessage ?? "WCS响应异常";
                        }
                    }
                    else
                    {
                        errorDetail = wcsResult?.ErrorMessage ?? "WCS响应异常";
                    }

                    foreach (var vt in validTasks)
                    {
                        resultDto.FailResults.Add(new DispatchTaskResultDto
                        {
                            TaskId = vt.Dto.TaskId,
                            TaskNum = vt.Task.TaskNum,
                            Success = false,
                            ErrorMessage = $"{errorDetail} (任务号:{vt.Task.TaskNum}, 托盘:{vt.Dto.PalletCode})"
                        });
                        resultDto.FailCount++;
                    }
                    resultDto.SuccessCount = 0;
                    return WebResponseContent.Instance.Error($"WCS批量下发失败，共{resultDto.FailCount}个任务");
                }

                // WCS调用成功，解析返回的结构化数据
                ReceiveTaskResultDto wcsResultData = null;
                try
                {
                    if (wcsResult.Data?.Data != null)
                    {
                        var jsonStr = wcsResult.Data.Data.ToString();
                        if (!string.IsNullOrEmpty(jsonStr) && jsonStr.Contains("duplicateTasks"))
                        {
                            wcsResultData = JsonConvert.DeserializeObject<ReceiveTaskResultDto>(jsonStr);
                        }
                    }
                }
                catch (Exception ex)
                {
                    // 解析WCS返回数据失败，记录日志但继续处理
                    Console.WriteLine($"解析WCS返回数据异常: {ex.Message}");
                }

                // 如果有重复任务，记录到失败结果中
                if (wcsResultData?.DuplicateTasks != null && wcsResultData.DuplicateTasks.Count > 0)
                {
                    foreach (var dup in wcsResultData.DuplicateTasks)
                    {
                        var statusName = GetTaskStatusName(dup.TaskType, dup.TaskStatus);
                        resultDto.FailResults.Add(new DispatchTaskResultDto
                        {
                            TaskId = 0, // 重复任务可能没有WMS的TaskId
                            TaskNum = dup.TaskNum,
                            Success = false,
                            ErrorMessage = $"WCS中已存在该任务(托盘:{dup.PalletCode}, 状态:{statusName})"
                        });
                        resultDto.FailCount++;
                    }
                }

                // 第三步：WCS调用成功后，批量更新DB
                foreach (var vt in validTasks)
                {
                    vt.Task.PalletCode = vt.Dto.PalletCode;
                    vt.Task.SourceAddress = vt.Dto.SourceAddress;
                    vt.Task.TargetAddress = vt.Dto.TargetAddress;
                    vt.Task.CurrentAddress = vt.Dto.SourceAddress;
                    vt.Task.NextAddress = vt.Dto.TargetAddress;
                    vt.Task.Grade = vt.Dto.Grade;
                    vt.Task.Dispatchertime = DateTime.Now;
                }

                // 批量更新DB
                var tasksToUpdate = validTasks.Select(vt => vt.Task).ToList();
                await BaseDal.UpdateDataAsync(tasksToUpdate);

                resultDto.SuccessCount = validTasks.Count - (wcsResultData?.DuplicateTasks?.Count ?? 0);

                if (resultDto.FailCount == 0)
                    return WebResponseContent.Instance.OK($"成功下发{resultDto.SuccessCount}个任务", resultDto);

                var errorResponse = WebResponseContent.Instance.Error($"部分下发成功{resultDto.SuccessCount}个，失败{resultDto.FailCount}个");
                errorResponse.Data = resultDto;
                return errorResponse;
            }
            catch (Exception ex)
            {
                return WebResponseContent.Instance.Error($"下发任务异常: {ex.Message}");
            }
        }

        /// <summary>
        /// 获取任务状态名称
        /// </summary>
        /// <param name="taskType">任务类型</param>
        /// <param name="taskStatus">任务状态</param>
        /// <returns>状态的中文描述</returns>
        private string GetTaskStatusName(int taskType, int taskStatus)
        {
            FieldInfo? fieldInfo = taskType switch
            {
                _ when taskType == TaskInboundTypeEnum.Inbound.GetHashCode() => typeof(TaskInStatusEnum).GetField(((TaskInStatusEnum)taskStatus).ToString()),
                _ when taskType == TaskOutboundTypeEnum.Outbound.GetHashCode() => typeof(TaskOutStatusEnum).GetField(((TaskOutStatusEnum)taskStatus).ToString()),
                _ when taskType == TaskRelocationTypeEnum.Relocation.GetHashCode() => typeof(TaskRelocationStatusEnum).GetField(((TaskRelocationStatusEnum)taskStatus).ToString()),
                _ => null
            };

            var descAttr = fieldInfo?.GetCustomAttributes(typeof(DescriptionAttribute), false)
                .FirstOrDefault() as DescriptionAttribute;
            return descAttr?.Description ?? taskStatus.ToString();
        }

        #endregion 手动任务
    }
}