using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Linq.Expressions;
using EMIS.Entities;
using EMIS.CommonLogic.SystemServices;
using EMIS.DataLogic.Common.Students;
using Bowin.Common.Linq;
using Bowin.Common.Linq.Entity;
using EMIS.ViewModel.DifferentDynamic;
using EMIS.ViewModel;
using EMIS.Utility.FormValidate;
using EMIS.ViewModel.WorkflowManage;
using EMIS.CommonLogic.CalendarManage;

namespace EMIS.CommonLogic.Students
{
    public class BatchRepeatServices : BaseWorkflowServices<CF_DifferentDynamic>, IBatchRepeatServices
    {
        public Lazy<IDifferentDynamicServices> DifferentDynamicServices { get; set; }
        public Lazy<ISchoolYearServices> SchoolYearServices { get; set; }
        public BatchRepeatDAL BatchRepeatDAL { get; set; }

        public IGridResultSet<DifferentDynamicView> GetDifferentDynamicViewGrid(ConfiguretView configuretView, Guid? schoolyearID, Guid? campusID,
            Guid? collegeID, int? education, int? year, int? standard, int? learningform, int? differentDynamicStatus, int pageIndex, int pageSize)
        {
            var statusList = this.GetStatusViewList();

            Expression<Func<CF_DifferentDynamic, bool>> filter = (x => x.ChangeApplyTypeID == (int)CF_ChangeApplyType.BatchRepeat);
            Expression<Func<CF_College, bool>> collegeFilter = (x => true);
            Expression<Func<CF_Facultymajor, bool>> facultyFilter = (x => true);
            Expression<Func<CF_Grademajor, bool>> gradeFilter = (x => true);

            if (schoolyearID.HasValue)
            {
                filter = filter.And(x => x.SchoolyearID == schoolyearID);
            }
            if (campusID.HasValue)
            {
                collegeFilter = collegeFilter.And(x => x.CampusID == campusID);
            }
            if (collegeID.HasValue)
            {
                collegeFilter = collegeFilter.And(x => x.CollegeID == collegeID);
            }
            if (year.HasValue)
            {
                gradeFilter = gradeFilter.And(x => x.GradeID == year);
            }
            if (standard.HasValue)
            {
                facultyFilter = facultyFilter.And(x => x.StandardID == standard);
            }
            if (education.HasValue)
            {
                facultyFilter = facultyFilter.And(x => x.EducationID == education);
            }
            if (learningform.HasValue)
            {
                facultyFilter = facultyFilter.And(x => x.LearningformID == learningform);
            }
            if (differentDynamicStatus.HasValue)
            {
                filter = filter.And(x => x.ApprovalStatus == differentDynamicStatus);
            }

            var query = BatchRepeatDAL.GetDifferentDynamicQueryable(filter, gradeFilter, facultyFilter, collegeFilter);

            query = GetQueryByDataRangeByCollege(query);

            if (!string.IsNullOrEmpty(configuretView.ConditionValue))
                query = query.DynamicWhere(configuretView.Attribute, configuretView.Condition, configuretView.ConditionValue);

            query = query.OrderByDescending(w => w.SchoolyearCode).ThenByDescending(w => w.EntityCreateTime).ThenBy(w => w.LoginID);

            var result = query.ToGridResultSet(pageIndex, pageSize);

            result.rows.ForEach(x => x.ApprovalStatusName = statusList.Where(w => w.ID == x.EntityApprovalStatus).Select(w => w.Name).FirstOrDefault());

            return result;
        }

        public List<DifferentDynamicView> GetDifferentDynamicViewList(ConfiguretView configuretView, Guid? schoolyearID, Guid? campusID, Guid? collegeID, 
            int? education, int? year, int? standard, int? learningform, int? differentDynamicStatus)
        {
            var statusList = this.GetStatusViewList();

            Expression<Func<CF_DifferentDynamic, bool>> filter = (x => x.ChangeApplyTypeID == (int)CF_ChangeApplyType.BatchRepeat);
            Expression<Func<CF_College, bool>> collegeFilter = (x => true);
            Expression<Func<CF_Facultymajor, bool>> facultyFilter = (x => true);
            Expression<Func<CF_Grademajor, bool>> gradeFilter = (x => true);

            if (schoolyearID.HasValue)
            {
                filter = filter.And(x => x.SchoolyearID == schoolyearID);
            }
            if (campusID.HasValue)
            {
                collegeFilter = collegeFilter.And(x => x.CampusID == campusID);
            }
            if (collegeID.HasValue)
            {
                collegeFilter = collegeFilter.And(x => x.CollegeID == collegeID);
            }
            if (year.HasValue)
            {
                gradeFilter = gradeFilter.And(x => x.GradeID == year);
            }
            if (standard.HasValue)
            {
                facultyFilter = facultyFilter.And(x => x.StandardID == standard);
            }
            if (education.HasValue)
            {
                facultyFilter = facultyFilter.And(x => x.EducationID == education);
            }
            if (learningform.HasValue)
            {
                facultyFilter = facultyFilter.And(x => x.LearningformID == learningform);
            }
            if (differentDynamicStatus.HasValue)
            {
                filter = filter.And(x => x.ApprovalStatus == differentDynamicStatus);
            }

            var query = BatchRepeatDAL.GetDifferentDynamicQueryable(filter, gradeFilter, facultyFilter, collegeFilter);

            query = GetQueryByDataRangeByCollege(query);

            if (!string.IsNullOrEmpty(configuretView.ConditionValue))
                query = query.DynamicWhere(configuretView.Attribute, configuretView.Condition, configuretView.ConditionValue);

            query = query.OrderByDescending(w => w.SchoolyearCode).ThenByDescending(w => w.EntityCreateTime).ThenBy(w => w.LoginID);

            var result = query.ToList();

            result.ForEach(x => x.ApprovalStatusName = statusList.Where(w => w.ID == x.EntityApprovalStatus).Select(w => w.Name).FirstOrDefault());

            return result;
        }

        public void BatchAddStudents(IList<Guid> studentIDList)
        {
            var studentList = StudentDAL.StudentRepository.GetList(x => studentIDList.Contains(x.UserID), (x => x.CF_Classmajor.CF_Grademajor.CF_Facultymajor)).ToList();
            var schoolyear = SchoolYearServices.Value.GetCurrentSchoolYear();

            studentList.ForEach(student =>
            {
                var differentDynamicView = new DifferentDynamicView()
                {
                    EntityID = Guid.Empty,
                    SchoolyearID = schoolyear.SchoolYearID,
                    UserID = student.UserID,
                    DifferentDynamicType = (int)CF_ChangeType.Repeat,
                    Reason = (int)CF_ChangeReason.PoorPerformance,
                    InSchoolStatusID = student.InSchoolStatusID,
                    StudentStatus = student.StudentStatus,
                    StandardID = student.CF_Classmajor.CF_Grademajor.CF_Facultymajor.StandardID,
                    ClassmajorID = student.ClassmajorID,
                    ApplyTypeID = (int)CF_ChangeApplyType.BatchRepeat,
                    ApplyRemark = "成绩太差，超过4门成绩不及格",
                    Remark = "成绩太差，超过4门成绩不及格"
                };
                DifferentDynamicServices.Value.AddOrUpdateDifferentDynamic(differentDynamicView);
            });
        }

        public void Process(IList<Guid> idList)
        {
            var startStatus = this.GetStartStatus();
            var endStatusList = this.GetBackpointStatus();
            var correctEndStatus = this.GetCorrectEndStatus();
            var differentDynamicList = this.BatchRepeatDAL
                    .GetBatchRepeatProcessView(x => idList.Contains(x.StudentChangeID)
                    && x.AfterClassmajorID == null).ToList();
            ActionView actionView = null;

            if (differentDynamicList.Any(x => x.EntityApprovalStatus == startStatus || x.EntityApprovalStatus == correctEndStatus || endStatusList.Contains(x.EntityApprovalStatus))
                || idList.Any(x => !differentDynamicList.Any(w => w.EntityID == x)))
            {
                throw new Exception("只能审核已提交的数据，所选的记录中有其他状态的数据，无法审核。");
            }
            if (differentDynamicList.Any(x => x.AfterClassmajorID == null))
            {
                throw new Exception("学生" + string.Join("、", differentDynamicList.Where(x => x.AfterClassmajorID == null).Select(x => x.Name)) + "找不到可留级的班，请检查班级设置。");
            }

            if (differentDynamicList.Count > 0)
            {
                actionView = this.GetActionView(differentDynamicList.First().EntityID, CustomPrincipal.Current.UserID)
                            .OrderBy(x => x.Sort).FirstOrDefault();
            }
            else
            {
                return;
            }

            foreach (var differentDynamic in differentDynamicList)
            {
                this.DifferentDynamicServices.Value.AddOrUpdateDifferentDynamic(differentDynamic);
            }
            var approveIDList = differentDynamicList.Select(x => x.EntityID).Distinct().ToList();
            this.Approve(approveIDList, CustomPrincipal.Current.UserID, actionView.ActionID);
        }

        public void Approve(IList<Guid> idList)
        {
            var startStatus = this.GetStartStatus();
            var endStatusList = this.GetBackpointStatus();
            var correctEndStatus = this.GetCorrectEndStatus();
            var differentDynamicList = this.BatchRepeatDAL
                    .GetBatchRepeatProcessView(x => idList.Contains(x.StudentChangeID)
                    && x.AfterClassmajorID != null).ToList();
            ActionView actionView = null;

            if (differentDynamicList.Any(x => x.EntityApprovalStatus == startStatus || x.EntityApprovalStatus == correctEndStatus || endStatusList.Contains(x.EntityApprovalStatus))
                || idList.Any(x => !differentDynamicList.Any(w => w.EntityID == x)))
            {
                throw new Exception("只能审核已处理的数据，所选的记录中有其他状态的数据，无法审核。");
            }

            if (differentDynamicList.Count > 0)
            {
                actionView = this.GetActionView(differentDynamicList.First().EntityID, CustomPrincipal.Current.UserID)
                            .OrderBy(x => x.Sort).FirstOrDefault();
            }
            else
            {
                return;
            }

            var approveIDList = differentDynamicList.Select(x => x.EntityID).Distinct().ToList();
            this.Approve(approveIDList, CustomPrincipal.Current.UserID, actionView.ActionID);
        }
    }
}