using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
using System.Data.Entity;
using Autofac;
using EMIS.DataLogic.SystemDAL;
using EMIS.Entities;
using EMIS.ViewModel.SystemView;
using Bowin.Common.JSON;
using EMIS.CommonLogic.PlugworkflowServices;
using Bowin.Common.Linq.Entity;
using Bowin.Common.Utility;
using System.Linq.Expressions;
using EMIS.Utility.FormValidate;
using EMIS.DataLogic.Repositories;
using EMIS.ViewModel.WorkflowManage;
using EMIS.Utility;
using EMIS.DataLogic.StudentManage.StudentProfile;

namespace EMIS.CommonLogic.SystemServices
{
    public class BaseWorkflowServices<TEntity> : BaseServices, IBaseWorkflowServices<TEntity> where TEntity : class
    {
        protected Func<List<Guid>, Guid, bool> DataRangeUserFunc { get; set; }
        public Lazy<IWorkflowServices> WorkflowServices { get; set; }
        public StudentDAL StudentDAL { get; set; }

        private string tableName { get; set; }

        /// <summary>
        /// 
        /// </summary>
        public BaseWorkflowServices()
        {
            tableName = typeof(TEntity).Name;
            var scope = AutofacHelper.RequestLifetimeScope;
            StudentDAL = scope.Resolve<StudentDAL>();
        }

        /// <summary>
        /// 查询对应的接入流程表开始流程环节的Pid（对应的流程环节Pid）
        /// </summary>
        /// <returns></returns>
        public int? GetStartStatus()
        {
            return WorkflowServices.Value.GetStartStatus(tableName);
        }

        /// <summary>
        /// 查询对应的接入流程表已退回流程环节Pid（注：不包含开始环节、结束环节且为[BP]标识）
        /// </summary>
        /// <returns></returns>
        public int? GetSendBackStatus()
        {
            return WorkflowServices.Value.GetSendBackStatus(tableName);
        }

        /// <summary>
        /// 查询对应的接入流程表已通过流程环节Pid（注：不包含开始环节、结束环节且为[PASS]标识）
        /// </summary>
        /// <returns></returns>
        public int? GetPassNoEndStatus()
        {
            return WorkflowServices.Value.GetPassNoEndStatus(tableName);
        }

        /// <summary>
        /// 查询对应的结束流程环节Pid
        /// </summary>
        /// <returns></returns>
        public List<int?> GetEndStatus()
        {
            return WorkflowServices.Value.GetEndStatus(tableName);
        }

        /// <summary>
        /// 查询对应的结束流程环节且正常结束的流程环节Pid（注：结束环节且不为[BP]标识的）
        /// </summary>
        /// <returns></returns>
        public int? GetCorrectEndStatus()
        {
            return WorkflowServices.Value.GetCorrectEndStatus(tableName);
        }

        /// <summary>
        /// 查询对应的接入流程表非正常结束的流程环节Pid（注：通常为结束环节且为[BP]标识的）
        /// </summary>
        /// <returns></returns>
        public List<int?> GetBackpointStatus()
        {
            return WorkflowServices.Value.GetBackpointStatus(tableName);
        }

        /// <summary>
        /// 查询对应的接入流程表中开始环节、审核流程环节Pid（注：不包含结束、非正常[BP]结束环节）
        /// </summary>
        /// <returns></returns>
        public List<int?> GetStartApproveStatusList()
        {
            return WorkflowServices.Value.GetStartApproveStatusList(tableName);
        }

        /// <summary>
        /// 查询重录待审，重新录入环节Pid(用于期末设定学生名单背景颜色)
        /// </summary>
        /// <returns></returns>
        public List<int?> GetRebutStatus()
        {
            return WorkflowServices.Value.GetRebutStatus(tableName);
        }

        /// <summary>
        /// 查询对应的接入流程表中全部流程环节信息（WorkflowStatusView）
        /// </summary>
        /// <returns></returns>
        public List<WorkflowStatusView> GetStatusViewList()
        {
            return WorkflowServices.Value.GetStatusViewList(tableName);
        }

        /// <summary>
        /// 查询对应的接入流程表中审核流程环节信息（WorkflowStatusView，不包含开始、结束、非正常[BP]结束环节）
        /// </summary>
        /// <returns></returns>
        public List<WorkflowStatusView> GetApproveStatusViewList()
        {
            return WorkflowServices.Value.GetApproveStatusViewList(tableName);
        }

        /// <summary>
        /// 重载方法，根据当前流程环节ID获取全部审批动作
        /// </summary>
        /// <returns></returns>
        public List<ActionView> GetActionView()
        {
            return WorkflowServices.Value.GetActionView(tableName);
        }

        /// <summary>
        /// 查询开始流程环节的动作列表List
        /// </summary>
        /// <returns></returns>
        public List<ActionView> GetStartActionView()
        {
            return WorkflowServices.Value.GetStartActionView(tableName);
        }

        /// <summary>
        /// 根据当前环节ID、用户ID查询下一步审批动作信息List（ActionView）
        /// </summary>
        /// <param name="formID">表单ID</param>
        /// <param name="userID">当前用户ID</param>
        /// <returns></returns>
        public List<ActionView> GetActionView(Guid formID, Guid userID)
        {
            try
            {
                return WorkflowServices.Value.GetActionView(tableName, formID, userID);
            }
            catch (Exception)
            {
                throw;
            }
        }

        /// <summary>
        /// 查询对应的工作流程中是否有对应的操作权限
        /// </summary>
        /// <param name="formID"></param>
        /// <param name="userID"></param>
        /// <returns></returns>
        public bool IsCanApprove(Guid formID, Guid userID)
        {
            try
            {
                var action = this.WorkflowServices.Value.GetActionView(tableName, formID, userID).FirstOrDefault();
                if (StudentDAL.StudentRepository.GetSingle(x => x.UserID == userID) == null)
                {
                    return WorkflowServices.Value.IsCanApprove(tableName, userID, action.ActionID, new List<Guid> { formID }, DataRangeUserFunc);
                }
                else
                {
                    return WorkflowServices.Value.IsCanApprove(tableName, userID, action.ActionID, new List<Guid> { formID });
                }
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }
        
        /// <summary>
        /// 
        /// </summary>
        /// <param name="userID"></param>
        /// <param name="formIDs"></param>
        /// <returns></returns>
        public List<WorkflowPermissionView> IsCanApprove(Guid userID, List<Guid> formIDs)
        {
            return WorkflowServices.Value.IsCanApprove(tableName, userID, formIDs);
        }

        /// <summary>
        /// 根据当前用户ID、actionID、formIDs判断是否有权限
        /// </summary>
        /// <param name="userID"></param>
        /// <returns></returns>
        public bool GetRangeUserList(Guid userID, Guid actionID, List<Guid> formIDs)
        {
            return WorkflowServices.Value.IsCanApprove(tableName, userID, actionID, formIDs, DataRangeUserFunc);
        }

        /// <summary>
        /// 启动对应的流程并执行指定的动作至下一环节（提交）
        /// </summary>
        /// <param name="formID">需要提交的记录主键ID</param>
        /// <param name="userID">提交人ID</param>
        /// <param name="comment">提交意见</param>
        public void StartUp(List<Guid> formIDList, Guid userID, string comment = "")
        {
            try
            {
                if (StudentDAL.StudentRepository.GetSingle(x => x.UserID == userID) == null)
                {
                    WorkflowServices.Value.BatchStartUp(tableName, formIDList, userID, comment, DataRangeUserFunc);
                }
                else
                {
                    WorkflowServices.Value.BatchStartUp(tableName, formIDList, userID, comment, null);
                }
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }

        /// <summary>
        /// 重载方法，启动对应的流程并执行指定的动作至下一环节（提交），适用于开始节点有两个以上动作时
        /// </summary>
        /// <param name="formID">需要提交的记录主键ID</param>
        /// <param name="userID">提交人ID</param>
        /// <param name="actionID">动作ID</param>
        /// <param name="comment">提交意见</param>
        public void StartUp(Guid formID, Guid userID, Guid actionID, string comment)
        {
            try
            {
                if (StudentDAL.StudentRepository.GetSingle(x => x.UserID == userID) == null)
                {
                    WorkflowServices.Value.StartUp(tableName, formID, userID, actionID, comment, DataRangeUserFunc);
                }
                else
                {
                    WorkflowServices.Value.StartUp(tableName, formID, userID, actionID, comment, null);
                }
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }

        /// <summary>
        /// 审核流程（不包括提交——不包含流程启动）
        /// </summary>
        /// <param name="formID">需要审核的记录主键ID</param>
        /// <param name="userID">审核人ID</param>
        /// <param name="actionID">审核动作ID</param>
        /// <param name="comment">提交意见</param>
        public void Approve(List<Guid> formIDList, Guid userID, Guid actionID, string comment = "")
        {
            try
            {
                if (StudentDAL.StudentRepository.GetSingle(x => x.UserID == userID) == null)
                {
                    WorkflowServices.Value.BatchApprove(tableName, formIDList, userID, actionID, comment, DataRangeUserFunc);
                }
                else
                {
                    WorkflowServices.Value.BatchApprove(tableName, formIDList, userID, actionID, comment, null);
                }
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }

        /// <summary>
        /// 工作流流程状态修改（通常用于取消申请、撤销等环节）
        /// </summary>
        /// <param name="formID">表单ID</param>
        /// <param name="status">状态：A为活动，D为结束、其他的自己定义</param>
        /// <param name="description">描述改变内容</param>
        public void ModifyProcessState(Guid formID, string status, string description)
        {
            try
            {
                WorkflowServices.Value.ModifyProcessState(tableName, formID, status, description);
            }
            catch (Exception)
            {

                throw;
            }
        }

        /// <summary>
        /// 查询对应的审核历史信息列表List（WorkflowApproveHistoryView）
        /// </summary>
        /// <param name="formID">需要获取的记录主键ID</param>
        /// <returns></returns>
        public IList<ViewModel.SystemView.WorkflowApproveHistoryView> GetApproveHistoryViewList(Guid formID)
        {
            try
            {
                return WorkflowServices.Value.GetApproveHistoryViewList(tableName, formID);
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }

        /// <summary>
        /// 根据相应的信息查询待办信息View
        /// </summary>
        /// <typeparam name="T">视图类型</typeparam>
        /// <param name="query">查询视图，指定一个IQueryable决定如何获取表单记录</param>
        /// <param name="userID">待办用户ID</param>
        /// <param name="pkSelector">指定主键列</param>
        /// <param name="pageIndex">页码</param>
        /// <param name="pageSize">每页行数</param>
        /// <returns></returns>
        public IGridResultSet<T> QueryByPendingJob<T, TOrder>(IQueryable<T> query, Guid userID, Expression<Func<T, Guid>> pkSelector,
            Expression<Func<T, TOrder>> orderby, bool isDescending = false, int? pageIndex = null, int? pageSize = null)
        {
            try
            {
                return WorkflowServices.Value.QueryByPendingJob(tableName, query, userID, pkSelector, orderby, isDescending, pageIndex, pageSize);
            }
            catch (Exception)
            {

                throw;
            }
        }

    }
}