using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using Bowin.Common.Linq;
using Bowin.Common.Linq.Entity;
using EMIS.DataLogic.SupervisionManage;
using EMIS.ViewModel.SupervisionManage;
using EMIS.ViewModel;
using EMIS.Entities;
using EMIS.CommonLogic.CalendarManage;
using EMIS.CommonLogic.SystemServices;
using System.Web;

namespace EMIS.CommonLogic.SupervisionManage
{
    public class LessonRecordServices : BaseServices, ILessonRecordServices, IFileUploadServices
    {
        public LessonRecordDAL LessonRecordDAL { get; set; }

        public Lazy<ISchoolYearServices> SchoolYearServices { get; set; }

        public IGridResultSet<LessonRecordView> GetLessonRecordViewGrid(ConfiguretView conditionView, Guid? schoolyearID, Guid? collegeID, 
            Guid? supervisionCollegeID, DateTime? startDate, DateTime? endDate, int? pageIndex = null, int? pageSize = null)
        {
            Expression<Func<SUP_LessonRecord, bool>> exp = (x => x.RecordStatus > (int)SYS_STATUS.UNUSABLE);
            Expression<Func<CF_Staff, bool>> supervisorExp = (x => true);

            if (schoolyearID.HasValue)
            {
                exp = exp.And(x => x.SchoolyearID == schoolyearID);
            }
            if (collegeID.HasValue)
            {
                supervisorExp = supervisorExp.And(x => x.CollegeID == collegeID);
            }
            if (supervisionCollegeID.HasValue)
            {
                exp = exp.And(x => x.SupervisionCollegeID == supervisionCollegeID);
            }
            if (startDate.HasValue)
            {
                exp = exp.And(x => x.LessonDate >= startDate);
            }
            if (endDate.HasValue)
            {
                var correctEndDate = endDate.Value.Date.AddDays(1);
                exp = exp.And(x => x.LessonDate < correctEndDate);
            }
            var query = LessonRecordDAL.GetLessonRecordViewQueryable(exp, supervisorExp);

            if (!string.IsNullOrEmpty(conditionView.ConditionValue))
            {
                query = query.DynamicWhere(conditionView.Attribute, conditionView.Condition, conditionView.ConditionValue);
            }
            query = this.GetQueryByDataRange(query).OrderByDescending(x => x.SchoolyearCode).ThenByDescending(x => x.LessonDate)
                .ThenBy(x => x.StartTimes);

            return query.ToGridResultSet(pageIndex, pageSize);
        }

        public List<LessonRecordView> GetLessonRecordViewList(ConfiguretView conditionView, Guid? schoolyearID, Guid? collegeID, 
            Guid? supervisionCollegeID, DateTime? startDate, DateTime? endDate)
        {
            return GetLessonRecordViewGrid(conditionView, schoolyearID, collegeID, supervisionCollegeID, startDate, endDate).rows;
        }

        public LessonRecordView GetLessonRecordView(Guid lessonRecordID)
        {
            return LessonRecordDAL.GetLessonRecordViewQueryable(x => x.LessonRecordID == lessonRecordID, (x => true)).FirstOrDefault();
        }

        public void Save(LessonRecordView lessonRecordView, IList<FileUploadView> attachmentList)
        {
            var lessonRecord = new SUP_LessonRecord();

            if (lessonRecordView.LessonRecordID != Guid.Empty)
            {
                lessonRecord = this.LessonRecordDAL.LessonRecordRepository.GetSingle(x => x.LessonRecordID == lessonRecordView.LessonRecordID, 
                    (x => x.SUP_LessonRecordAttachment));
                this.SetModifyStatus(lessonRecord);
            }
            else
            {
                lessonRecord.LessonRecordID = Guid.NewGuid();
                //lessonRecord.SchoolyearID = SchoolYearServices.Value.GetCurrentSchoolYear().SchoolYearID;
                this.SetNewStatus(lessonRecord);
                this.UnitOfWork.Add(lessonRecord);
            }
            lessonRecord.SchoolyearID = lessonRecordView.SchoolyearID;
            lessonRecord.LessonDate = lessonRecordView.LessonDate;
            lessonRecord.Location = lessonRecordView.Location;
            lessonRecord.SupervisionCollegeID = lessonRecordView.SupervisionCollegeID;
            lessonRecord.UserID = lessonRecordView.UserID;
            lessonRecord.ClassmajorID = lessonRecordView.ClassmajorID;
            lessonRecord.CoursematerialID = lessonRecordView.CoursematerialID;
            lessonRecord.Weekday = lessonRecordView.Weekday;
            lessonRecord.CoursesTimeID = lessonRecordView.CoursesTimeID;
            lessonRecord.TotalScore = lessonRecordView.TotalScore;
            lessonRecord.Content = HttpUtility.HtmlDecode(lessonRecordView.Content);
                //lessonRecordView.Content.Replace("&lt;", "<").Replace("&gt", ">").Replace("&amp", "&").Replace("&quot", "\"").Replace("&apos", "'");

                //System.Text.RegularExpressions.Regex.Unescape(lessonRecordView.Content);
            lessonRecord.Record = HttpUtility.HtmlDecode(lessonRecordView.Record);
                //System.Text.RegularExpressions.Regex.Unescape(lessonRecordView.Record);

            lessonRecord.SUP_LessonRecordAttachment = new HashSet<SUP_LessonRecordAttachment>();
            if (attachmentList!=null)
            {
                attachmentList.ToList().ForEach(x =>
                {
                    var attachment = new SUP_LessonRecordAttachment();
                    attachment.LessonRecordAttachmentID = Guid.NewGuid();
                    attachment.LessonRecordID = lessonRecord.LessonRecordID;
                    attachment.Name = x.FileName;
                    attachment.Url = x.FileUrl;

                    this.SetNewStatus(attachment);
                    UnitOfWork.Add(attachment);
                });
            }
            UnitOfWork.Commit();
        }

        public void Delete(IList<Guid?> lessonRecordIDList)
        {
            UnitOfWork.Delete<SUP_LessonRecordAttachment>(x => lessonRecordIDList.Contains(x.LessonRecordID));
            UnitOfWork.Delete<SUP_LessonRecord>(x => lessonRecordIDList.Contains(x.LessonRecordID));
        }

        public List<FileUploadView> GetFileList(Guid? formID)
        {
            return LessonRecordDAL.GetLessonRecordAttachmentQueryable(x => x.LessonRecordID == formID).ToList();
        }
    }
}