using CRM.Core.BLL.Exam;
using CRM.Core.Common.Layui;
using CRM.Core.DAL.Exam;
using CRM.Core.Model.Entity;
using System;
using System.Collections.Generic;
using System.Linq;
using WX.CRM.Common;

namespace CRM.Core.BLL.Application.Exam
{
    public class ExamService
    {
        private readonly Exam_DAL _examDal = new Exam_DAL();

        private readonly EXAM_PAPER_BL _paper = new EXAM_PAPER_BL();

        private readonly EXAM_PAPERSUBJECT_BL _paperSubject = new EXAM_PAPERSUBJECT_BL();

        public ExamResult GenerateExam(int paperType, string appid, string appuserid)
        {
            var paperId = 0;
            var isNew = true;
            //结束时间大于当前时间，然后还没有交卷，说明这个是正在进行中的考试，直接取出
            var doPaper = _paper.Get(p => p.APPID == appid && p.APPUSERID == appuserid && p.TYPE == paperType && p.ENDTIME > DateTime.Now && p.HANDTIME == null);
            if (doPaper != null)
            {
                paperId = doPaper.ID;
                isNew = false;
            }
            else
            {
                paperId = _examDal.GenerateExam(paperType, appid, appuserid);
            }
            var paper = _paper.Get(p => p.ID == paperId);
            var subject = _paperSubject.GetList(p => p.PAPERID == paperId);
            var singleSubject = subject.Where(p => p.SUBJECTTYPE == 1).OrderBy(p => p.RN);
            var composeSubject = subject.Where(p => p.SUBJECTTYPE == 2).OrderBy(p => p.RN);

            return new ExamResult(isNew, paper, singleSubject, composeSubject);
        }

        public bool Save(AnswerDto dto)
        {
            var answerList = new Dictionary<int, string>();
            //var subjectList = subject.ToObject<List<subject>>();
            foreach (var item in dto.subject)
            {
                answerList.Add(item.subjectId, item.answer);
            }
            var ret = _paper.HandExamPaper(dto.paperid, answerList);
            return ret;
        }

        public List<EXAM_PAPER> List(ref Laypage pager, string appid, string appuserid, int? type, DateTime? sTime, DateTime? eTime)
        {
            var where = PredicateExtensionses.True<EXAM_PAPER>();
            if (!string.IsNullOrEmpty(appid))
            {
                where = where.And(p => p.APPID == appid);
            }
            if (!string.IsNullOrEmpty(appuserid))
            {
                where = where.And(p => p.APPUSERID == appuserid);
            }
            if (type.HasValue)
            {
                where = where.And(p => p.TYPE == type);
            }
            if (sTime.HasValue)
            {
                where = where.And(p => p.STARTTIME > sTime.Value);
            }
            if (eTime.HasValue)
            {
                eTime = eTime.Value.AddDays(1);
                where = where.And(p => p.STARTTIME < eTime.Value);
            }

            var list = _paper.GetList(where, p => p.ID, pager).ToList();

            return list;
        }

        public ExamResult Show(int paperId)
        {
            var paper = _paper.Get(p => p.ID == paperId);
            var subject = _paperSubject.GetList(p => p.PAPERID == paperId);
            var singleSubject = subject.Where(p => p.SUBJECTTYPE == 1).OrderBy(p => p.RN);
            var composeSubject = subject.Where(p => p.SUBJECTTYPE == 2).OrderBy(p => p.RN);

            return new ExamResult(false, paper, singleSubject, composeSubject);
        }
    }

    public class ExamResult
    {
        public ExamResult(bool isNew, EXAM_PAPER paper, IEnumerable<EXAM_PAPERSUBJECT> singleSubject, IEnumerable<EXAM_PAPERSUBJECT> composeSubject)
        {
            this.isNew = isNew;
            this.paper = paper;
            this.singleSubject = singleSubject;
            this.composeSubject = composeSubject;
        }

        public bool isNew { get; set; }
        public EXAM_PAPER paper { get; set; }
        public IEnumerable<EXAM_PAPERSUBJECT> singleSubject { get; set; }
        public IEnumerable<EXAM_PAPERSUBJECT> composeSubject { get; set; }
    }


    public class AnswerDto
    {
        public string appid { get; set; }
        public string appuserid { get; set; }
        public int paperid { get; set; }
        public List<subject> subject { get; set; }
    }
    public class subject
    {
        public int subjectId { get; set; }
        public string answer { get; set; }
    }
}