using DS.Module.Core;
using DS.Module.Core.Extensions;
using DS.WMS.Core.Fee.Method;
using DS.WMS.Core.Flow.Dtos;
using DS.WMS.Core.Op.Dtos.TaskInteraction;
using DS.WMS.Core.Op.Entity;
using DS.WMS.Core.Op.Entity.TaskInteraction;
using DS.WMS.Core.Op.Interface.TaskInteraction;
using DS.WMS.Core.Sys.Entity;
using DS.WMS.Core.TaskPlat.Dtos;
using DS.WMS.Core.TaskPlat.Interface;
using Masuit.Tools.Systems;
using Microsoft.Extensions.DependencyInjection;
using SqlSugar;

namespace DS.WMS.Core.Op.Method.TaskInteraction
{
    /// <summary>
    /// 任务交互服务
    /// </summary>
    public class TaskService : FeeServiceBase, ITaskService
    {
        /// <summary>
        /// 任务管理服务
        /// </summary>
        protected ITaskManageService ManagerService { get; private set; }

        /// <summary>
        /// 初始化
        /// </summary>
        /// <param name="provider"></param>
        protected TaskService(IServiceProvider provider) : base(provider)
        {
            ManagerService = provider.GetRequiredService<ITaskManageService>();
        }

        /// <summary>
        /// 创建关联任务
        /// </summary>
        /// <param name="request"></param>
        /// <param name="useTransaction">是否使用事务</param>
        /// <returns></returns>
        public async Task<DataResult> CreateTaskAsync(TaskCreationRequest request, bool useTransaction = true)
        {
            var task = await GetTaskAsync(request.BusinessId, request.BusinessType, request.TaskType);
            if (task != null)
                return DataResult.FailedWithDesc(nameof(MultiLanguageConst.Task_Exists));

            long tenatId = long.Parse(User.TenantId);
            string tenatName = Db.Queryable<SysTenant>().Where(x => x.Id == tenatId).Select(x => x.Name).First();
            var info = new TaskManageOrderMessageInfo
            {
                Head = new TaskManageOrderMessageHeadInfo
                {
                    GID = Guid.NewGuid().ToString(),
                    BSNO = request.BusinessId,
                    MessageType = "WORK_FLOW_TASK",
                    SenderId = "WorkFlow",
                    SenderName = "工作流平台",
                    ReceiverId = "TaskManage",
                    ReceiverName = "任务管理平台",
                    Version = "1.0",
                    RequestDate = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"),
                    RequestAction = "Add"
                },
                Main = new TaskManageOrderMessageMainInfo
                {
                    TaskType = request.TaskType,
                    TaskSource = TaskSourceEnum.WORK_FLOW,
                    TaskTitle = request.TaskTitle,
                    TaskDesp = request.TaskDescription,
                    TaskUserId = User.UserId,
                    TaskUserName = User.UserName,
                    RecvUserId = User.UserId,
                    RecvUserName = User.UserName,
                    TaskTenatId = tenatId,
                    TaskTenatName = tenatName
                }
            };

            if (info.Main.TaskTitle.IsNullOrEmpty())
            {
                var biz = await TenantDb.Queryable<SeaExport>().Select(x => new
                {
                    x.Id,
                    x.MBLNO,
                    x.Vessel,
                    x.Voyno,
                    x.ETD,
                }).FirstAsync(x => x.Id == request.BusinessId);

                info.Main.TaskDesp = info.Main.TaskTitle = $"{request.TaskType.GetDescription()} {biz.Vessel} {biz.Voyno} ETD:{biz.ETD?.ToString("yyyy-MM-dd")} BLNo:{biz.MBLNO}";
            }

            if (useTransaction)
                await TenantDb.Ado.BeginTranAsync();

            try
            {
                var result = await ManagerService.InitTaskJob(info);
                if (!result.Succeeded)
                    return result;

                task = new BusinessTask
                {
                    BusinessId = request.BusinessId,
                    BusinessType = request.BusinessType,
                    TaskType = request.TaskType,
                    TaskStatus = TaskStatusEnum.Create,
                    CreateBy = long.Parse(User.UserId),
                    CreateTime = DateTime.Now
                };
                task.NextType = GetNextType(task);
                await TenantDb.Insertable(task).ExecuteCommandAsync();

                result = await OnTaskCreated(task);
                if (!result.Succeeded)
                    return result;

                if (useTransaction)
                    await TenantDb.Ado.CommitTranAsync();

                return result;
            }
            catch (Exception ex)
            {
                if (useTransaction)
                    await TenantDb.Ado.RollbackTranAsync();

                await ex.LogAsync(Db);
                return DataResult.FailedWithDesc(nameof(MultiLanguageConst.Operation_Failed));
            }
        }

        /// <summary>
        /// 当任务创建时调用
        /// </summary>
        /// <param name="task"></param>
        /// <returns></returns>
        protected virtual Task<DataResult> OnTaskCreated(BusinessTask task) 
        {
            return Task.FromResult(DataResult.Success);
        }

        /// <summary>
        /// 设置任务状态
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        public async Task<DataResult> SetTaskStatusAsync(TaskUpdateRequest request)
        {
            await TenantDb.Ado.BeginTranAsync();
            try
            {
                var result = await ManagerService.SetTaskStatus(request.BusinessId, request.TaskType, request.TaskStatus, DateTime.Now);
                if (!result.Succeeded)
                    return result;

                //更新当前任务状态
                BusinessTask task = await GetTaskAsync(request.BusinessId, request.BusinessType, request.TaskType);
                if (task == null)
                    return DataResult.FailedWithDesc(nameof(MultiLanguageConst.EmptyData));

                if (task.TaskStatus!= request.TaskStatus)
                    await OnTaskStatusChanged(request);

                task.TaskStatus = request.TaskStatus;
                await TenantDb.Updateable(task).UpdateColumns(x => x.TaskStatus).ExecuteCommandAsync();

                if (task.TaskStatus == TaskStatusEnum.Complete)
                {
                    //若存在下一任务，则继续创建
                    if (task.NextType.HasValue)
                    {
                        var req = new TaskCreationRequest
                        {
                            BusinessId = request.BusinessId,
                            BusinessType = request.BusinessType,
                            TaskType = task.NextType.Value
                        };
                        await CreateTaskAsync(req, false);
                    }
                }

                await TenantDb.Ado.CommitTranAsync();
                return DataResult.Success;
            }
            catch (Exception ex)
            {
                await TenantDb.Ado.RollbackTranAsync();
                await ex.LogAsync(Db);
                return DataResult.FailedWithDesc(nameof(MultiLanguageConst.Operation_Failed));
            }
        }

        /// <summary>
        /// 当任务状态发生变化时调用
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        protected virtual Task OnTaskStatusChanged(TaskUpdateRequest request) 
        {
            return Task.CompletedTask;
        }

        /// <summary>
        /// 审批完成回调更新
        /// </summary>
        /// <param name="callback">回调信息</param>
        /// <returns></returns>
        /// <exception cref="ArgumentNullException"><paramref name="callback"/>为null时引发</exception>
        public virtual async Task UpdateBusinessAsync(FlowCallback callback)
        {
            ArgumentNullException.ThrowIfNull(callback, nameof(callback));

            //更新任务状态为完成
            await SetTaskStatusAsync(new TaskUpdateRequest 
            {
                BusinessId = callback.BusinessId,
                BusinessType = callback.BusinessType.GetValueOrDefault(),
                TaskType = TaskBaseTypeEnum.WAIT_ORDER_AUDIT,
                TaskStatus = TaskStatusEnum.Complete
            });
        }

        protected internal async Task<BusinessTask> GetTaskAsync(long id, BusinessType businessType, TaskBaseTypeEnum taskType)
        {
            return await TenantDb.Queryable<BusinessTask>().FirstAsync(x =>
                x.BusinessId == id && x.BusinessType == businessType && x.TaskType == taskType);
        }

        /// <summary>
        /// 获取给定任务的下一任务类型
        /// </summary>
        /// <param name="current">任务信息</param>
        /// <returns></returns>
        public static TaskBaseTypeEnum? GetNextType(BusinessTask current)
        {
            if (current.TaskType == TaskBaseTypeEnum.WAIT_CHECKOUT_BILL) //流程的最后一步
                return null;

            int currentTypeVal = (int)current.TaskType;
            if (currentTypeVal >= 300) //300开始的枚举值为可选服务项目，不存在前后关联性
                return null;

            return (TaskBaseTypeEnum)currentTypeVal++;
        }
    }
}