using EXAM.Models;
using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace EXAM.Controllers
{
    public class AnswersController : Controller
    {
        // GET: Answers
        public ActionResult TeAnswer()
        {
            return View(); 
        }

       
        public ActionResult TeAnswerDetail(int AnswerID)
        {
            return View(); 
        }
        public ActionResult Verify(int id)
        {
            using (ExamDBEntities db=new ExamDBEntities())
            {
              var da=  db.Detail.Where(d=>d.AnswerID==id).ToList();
                int sum = 0;
                foreach (var i in da)
                {
                    if (i.DetailAnswer==i.Topic.TopicAnswer)
                    {
                        sum += i.Topic.TopicScore;
                    }
                }
                
                var dd = db.Answer.Find(id);
                dd.AnswerScore = sum;
                dd.AnswerState = 2;
                dd.BatchTime = DateTime.Now;
                db.Entry(dd).State = EntityState.Modified;
                db.SaveChanges();
                return RedirectToAction("TeAnswer");
            }
          
        }

        /// <summary>
        /// 学生答题列表
        /// </summary>
        /// <returns></returns>
        public ActionResult MyAnswer()
        {
            if (Session["Student"] == null)
            {
                return RedirectToAction("LoginStudent", "Home");
            }
            using (ExamDBEntities db = new ExamDBEntities()) {
                db.Configuration.LazyLoadingEnabled = false;
                var da = Session["Student"] as Student;
               var dd= db.Answer.Where(a => a.StuID == da.StuID).Include("Student").Include("Paper").ToList();
                return View(dd);
            }
           
        }


        /// <summary>
        /// 点击开始答题/继续答题的跳转
        /// </summary>
        /// <param name="PaperID"></param>
        /// <param name="AnswerID"></param>
        /// <returns></returns>

        public ActionResult BeginAnswer(int PaperID,int? AnswerID)
        {
            var stu = Session["Student"] as Student;
            if (stu==null)
            {
                return RedirectToAction("Index","Home");
            }
            using (ExamDBEntities db = new ExamDBEntities())
            {
                var st = new Answer
                {                    
                    StuID = stu.StuID,
                    AnswerTime = DateTime.Now,
                    AnswerState = 0,
                    PaperID = PaperID,
                    TeacherID=1,
                    AnswerScore=0
                };
                var res = db.Answer.Where(s => s.StuID == stu.StuID && s.PaperID == PaperID).FirstOrDefault();
                //点击开始答题的时候
                if (res == null&&AnswerID == null)
                {
                    db.Configuration.LazyLoadingEnabled = false;
                    //添加做题记录
                    db.Entry(st).State = EntityState.Added;
                    //  db.SaveChanges();
                    //找到试卷中的说有题目   
                    var top = db.Topic.Where(t => t.PaperID == PaperID).ToList();
                    //插入到答题表
                    foreach (var item in top)
                    {
                        db.Entry(new Detail
                        {
                            AnswerID = st.AnswerID,
                            TopicID = item.TopicID
                        }).State = EntityState.Added;
                    }
                    db.SaveChanges();
                }
                else
                {
                    
                    st.AnswerID = res.AnswerID;
                    
                    if (res.AnswerState != 0)
                    {
                        //查看详情MyAnswerDetail
                        return RedirectToAction("MyAnswerDetail", new { AnswersID = st.AnswerID });
                    }
                 
                }
            
                return RedirectToAction("AnswerDetail", new { AnswerID = st.AnswerID });
            }                      
        }

        /// <summary>
        /// 学生考试
        /// </summary>
        /// <param name="AnswerID"></param>
        /// <returns></returns>
        public ActionResult AnswerDetail(int AnswerID)
        {             
                return View();            
        }

        /// <summary>
        /// 提交试卷
        /// 停用
        /// </summary>
        /// <param name="Detail"></param>
        /// <returns></returns>
        [HttpPost]
        public bool AnswerDetail(IList<Detail> Detail,int? type)
        {
            using (ExamDBEntities db = new ExamDBEntities())
            {
                var id = Detail[0].AnswerID;
                var dd = db.Detail.Where(d => d.AnswerID == id).ToList();
                for (int i = 0; i < dd.Count; i++)
                {
                    dd[i].DetailAnswer = Detail[i].DetailAnswer;
                    dd[i].Answer.AnswerState = int.Parse(type+"");
                }
               
                db.SaveChanges();

                return true;
            }           
        }

        public ActionResult MyAnswerDetail(int AnswersID)
        {
            return View();
        }

    }
}