using System;
using System.Collections.Generic;
using System.Linq;
using WX.CRM.IBLL.Exam;
using WX.CRM.Model.Entity;

namespace WX.CRM.BLL.Exam
{
    public class EXAM_PAPER_BL : DbContextRepository<EXAM_PAPER>, IEXAM_PAPER
    {
        public bool HandExamPaper(decimal eid, decimal paperId, Dictionary<decimal, string> answerList)
        {
            using (var db = new crmContext())
            {
                var paper = db.EXAM_PAPER.FirstOrDefault(p => p.EID == eid && p.ID == paperId);
                if (paper == null)
                {
                    return false;
                }
                //如果已经交过卷，直接返回
                if (paper.HANDTIME.HasValue)
                    return true;
                paper.HANDTIME = DateTime.Now;
                paper.USETIME = (paper.HANDTIME - paper.STARTTIME).Value.Seconds;

                var paperSubject = db.EXAM_PAPERSUBJECT.Where(p => p.PAPERID == paper.ID);
                var score = 0;
                foreach (var item in paperSubject)
                {
                    var answer = answerList.FirstOrDefault(p => p.Key == item.ID).Value;
                    if (item.RIGHTANSWER == answer)
                    {
                        score++;
                    }
                    item.ANSWER = answer;
                }

                paper.SCORE = score;

                db.SaveChanges();

                return true;
            }
        }
    }
}