using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using EMIS.DataLogic.SchedulingManage.ScheduleApproval;
using EMIS.ViewModel.SchedulingManage.ScheduleApproval;
using EMIS.Entities;
using System.Linq.Expressions;
using EMIS.ViewModel;
using Bowin.Common.Linq;
using Bowin.Common.Linq.Entity;
using EMIS.CommonLogic.SystemServices;
using EMIS.Utility.FormValidate;
using EMIS.DataLogic.SchedulingManage.SchedulingSettings;

namespace EMIS.CommonLogic.SchedulingManage.ScheduleApproval
{
    public class CollegeScheduleApprovalServices : BaseWorkflowServices<ES_CollegeScheduleStatus>, ICollegeScheduleApprovalServices
    {
        public CollegeScheduleApprovalDAL collegeScheduleApprovalDAL { get; set; }
        public CollegePriorityDAL CollegePriorityDAL { get; set; }

        public IGridResultSet<CollegeScheduleApprovalView> GetCollegeScheduleApprovalViewGrid(Guid? SchoolyearID, Guid? collegeID, int? approvalStatus, int pageIndex, int pageSize)
        {
            var status = this.GetStatusViewList();
            Expression<Func<CF_College, bool>> exp = (x => x.RecordStatus > (int)SYS_STATUS.UNUSABLE);
            Expression<Func<ES_CollegeScheduleStatus, bool>> exp1 = (x => x.RecordStatus > (int)SYS_STATUS.UNUSABLE);
            if (SchoolyearID != null)
                exp1 = exp1.And(x => x.SchoolyearID == SchoolyearID);
            if (collegeID != null)
                exp = exp.And(x => x.CollegeID == collegeID);
            //if (approvalStatus != null)
            //{
            //    if (approvalStatus == (int)EMIS.ViewModel.ES_CollegeScheduleStatusCode.NotSubmited)
            //        exp1 = exp1.And(x => x.RecordStatus == approvalStatus || x.RecordStatus == null);
            //    else
            //        exp1 = exp1.And(x => x.RecordStatus == approvalStatus);
            //}
            var query = this.GetQueryByDataRangeByCollege(collegeScheduleApprovalDAL.GetCollegeScheduleApprovalViewQueryable(exp, exp1));
            if (approvalStatus != null)
            {
                if (approvalStatus == (int)EMIS.ViewModel.ES_CollegeScheduleStatusCode.NotSubmited)
                    query = query.Where(x => x.RecordStatus == approvalStatus || x.RecordStatus == null);
                else
                    query = query.Where(x => x.RecordStatus == approvalStatus);
            }

            var result = query.OrderBy(x => x.CollegeNo).ThenByDescending(x => x.CreateTime).ToGridResultSet<CollegeScheduleApprovalView>(pageIndex, pageSize);

            result.rows.ForEach(x => {  
                x.CollegeScheduleStatusID = x.CollegeScheduleStatusID ?? Guid.Empty;
                x.RecordStatus = x.RecordStatus ?? (int)EMIS.ViewModel.ES_CollegeScheduleStatusCode.NotSubmited;
                x.StatusName = status.FirstOrDefault(w => w.ID == x.RecordStatus).Name;
            });

            return result;
        }

        public List<CollegeScheduleApprovalView> GetCollegeScheduleApprovalViewList(IList<ViewModel.EducationSchedule.CollegeSchoolyearView> collegeAndSchoolyearList,
            bool isNeedDataRange = true)
        {
            var status = this.GetStatusViewList();
            Expression<Func<CF_College, bool>> exp = (x => x.RecordStatus > (int)SYS_STATUS.UNUSABLE);
            Expression<Func<ES_CollegeScheduleStatus, bool>> exp1 = (x => x.RecordStatus > (int)SYS_STATUS.UNUSABLE);
            var query = collegeScheduleApprovalDAL.GetCollegeScheduleApprovalViewQueryable(exp, exp1);
            if (isNeedDataRange)
            {
                query = this.GetQueryByDataRangeByCollege(query);
            }

            try
            {
                var result = query
                    .SelectByKeys(collegeAndSchoolyearList).OrderBy(x => x.CollegeNo).ThenByDescending(x => x.CreateTime).ToList();

                result.ForEach(x => x.StatusName = status.FirstOrDefault(w => w.ID == x.RecordStatus).Name);

                return result;
            }
            catch (Exception)
            {
                
                throw;
            }
        }

        public bool Submit(List<Guid?> collegeScheduleStatusIDs, List<Guid?> collegeIDs, Guid schoolYearID)
        {
            try
            {
                int i = 0;
                string allMessage = "";
                List<Guid> submitCollegeScheduleStatusIDList = new List<Guid>();
                for (i = 0; i < collegeIDs.Count; i++)
                {
                    var collegeID = collegeIDs[i];
                    var collegeScheduleStatus = this.collegeScheduleApprovalDAL.collegeScheduleStatusRepository
                        .GetList(x => x.SchoolyearID == schoolYearID && x.CollegeID == collegeID, (x => x.CF_College)).FirstOrDefault();

                    if (collegeScheduleStatus != null)
                    {
                        if (collegeScheduleStatus.RecordStatus != (int)ES_CollegeScheduleStatusCode.NotSubmited)
                        {
                            allMessage += collegeScheduleStatus.CF_College.Name + "的课表已经提交，无需重复提交。";
                            continue;
                        }
                        SetModifyStatus(collegeScheduleStatus);
                    }
                    else
                    {
                        collegeScheduleStatus = new ES_CollegeScheduleStatus();
                        collegeScheduleStatus.CollegeScheduleStatusID = Guid.NewGuid();
                        collegeScheduleStatus.CollegeID = collegeIDs[i];
                        collegeScheduleStatus.SchoolyearID = schoolYearID;

                        SetNewStatus(collegeScheduleStatus);
                        collegeScheduleStatus.RecordStatus = (int)ES_CollegeScheduleStatusCode.NotSubmited;
                        UnitOfWork.Add(collegeScheduleStatus);
                    }
                    this.UnitOfWork.Commit();

                    submitCollegeScheduleStatusIDList.Add(collegeScheduleStatus.CollegeScheduleStatusID);
                }
                this.StartUp(submitCollegeScheduleStatusIDList, CustomPrincipal.Current.UserID);
                if (allMessage != "")
                {
                    throw new Exception(allMessage);
                }
                return true;
            }
            catch (Exception)
            {

                throw;
            }
        }

        public bool Approve(List<Guid> collegeScheduleStatusIDs)
        {
            try
            {
                var startStatus = this.GetStartStatus();
                var endStatus = this.GetCorrectEndStatus();
                var collegeScheduleStatusList = this.collegeScheduleApprovalDAL.GetCollegeScheduleApprovalViewQueryable((x => true), 
                    (x => collegeScheduleStatusIDs.Contains(x.CollegeScheduleStatusID))).ToList();

                if (collegeScheduleStatusIDs.Count == 0)
                {
                    return true;
                }
                var appproveList = collegeScheduleStatusIDs.Where(x => false).Select(x => new { ID = x, ActionID = Guid.Empty }).ToList();
                foreach (var id in collegeScheduleStatusIDs)
                {
                    var collegeScheduleStatus = collegeScheduleStatusList
                        .Where(x => x.CollegeScheduleStatusID == id).FirstOrDefault();

                    if (!collegeScheduleStatus.RecordStatus.HasValue || collegeScheduleStatus.RecordStatus == startStatus)
                    {
                        throw new Exception(collegeScheduleStatus.CollegeName + "的课表目前并未提交，请先提交后再进行审核。");
                    }
                    //if (collegeScheduleStatus.RecordStatus == endStatus)
                    //{
                    //    throw new Exception(collegeScheduleStatus.CollegeName + "的课表目前已形成正式课表，无需审核，教务管理员可以使用撤销功能退回给院系所重新提交。");
                    //}
                    var actionList = this.GetActionView(id, CustomPrincipal.Current.UserID).Where(x => x.ActionName == "同意").ToList();
                    //collegeScheduleStatus.RecordStatus = (int)ES_CollegeScheduleStatusCode.NotSubmited;
                    var action = actionList.FirstOrDefault();
                    if (action == null)
                    {
                        throw new Exception(collegeScheduleStatus.CollegeName + "的课表所在的环节并无审核流程，无法审核。");
                    }
                    appproveList.Add(new { ID = id, ActionID = action.ActionID });
                }
                appproveList.GroupBy(x => x.ActionID).ToList().ForEach(x => this.Approve(x.Select(w => w.ID).ToList(), CustomPrincipal.Current.UserID, x.Key));
                //this.UnitOfWork.Commit();
                return true;
            }
            catch (Exception)
            {

                throw;
            }
        }

        public bool ReturnBack(List<Guid> collegeScheduleStatusIDs)
        {
            try
            {
                var appproveList = collegeScheduleStatusIDs.Where(x => false).Select(x => new { ID = x, ActionID = Guid.Empty }).ToList();
                foreach (var id in collegeScheduleStatusIDs)
                {
                    var actionList = this.GetActionView(id, CustomPrincipal.Current.UserID).Where(x => x.ActionName == "不同意" || x.ActionName == "退回").ToList();
                    //var collegeScheduleStatus = this.collegeScheduleApprovalDAL.collegeScheduleStatusRepository.GetList(x => x.CollegeScheduleStatusID == id).FirstOrDefault();
                    //collegeScheduleStatus.RecordStatus = (int)ES_CollegeScheduleStatusCode.NotSubmited;
                    var action = actionList.FirstOrDefault();
                    if (action == null)
                    {
                        throw new Exception("该环节不能退回。");
                    }
                    appproveList.Add(new { ID = id, ActionID = action.ActionID });
                }
                //this.UnitOfWork.Commit();
                appproveList.GroupBy(x => x.ActionID).ToList().ForEach(x => this.Approve(x.Select(w => w.ID).ToList(), CustomPrincipal.Current.UserID, x.Key));
                return true;
            }
            catch (Exception)
            {

                throw;
            }
        }
    }
}