using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using VM;

namespace Web.BLL
{
    /// <summary>
    /// 考试Cache扩展帮助类
    /// </summary>
    public class ExamCacheHelper
    {
        /// <summary>
        /// 公共试卷缓存
        /// </summary>
        private PaperVM cache = null;
        /// <summary>
        /// 个人使用试卷缓存
        /// </summary>
        private PaperVM cache2 = null;
        public ExamCacheHelper(PaperVM cache, PaperVM cache2)
        {
            this.cache = cache;
            this.cache2 = cache2;
        }

        /// <summary>
        /// 获取第一个问题类型问题ID
        /// </summary>
        /// <returns></returns>
        public KeyValue GetFirstQuestionType()
        {

            KeyValue model = new KeyValue();
            List<PaperDetailVM> list = cache.Details.ToList();
            list.ForEach(x =>
            {
                if (ExamCaches.QuestionCache.ContainsKey(x.QuesionId))
                {
                    x.StructType = ExamCaches.QuestionCache[x.QuesionId].StructType;
                    x.StructTypeId = ExamCaches.QuestionCache[x.QuesionId].CharpterID;
                }
            });

            var scorlist = GetTheoryQuestionType();

            List<PaperDetailVM> list2 = new List<PaperDetailVM>();

            string[] strAn = scorlist[0].strIdList.Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries);
            for (int an = 0; an < strAn.Length; an++)
            {
                list2.AddRange(list.Where(a => a.StructTypeId == Convert.ToInt32(strAn[an])).OrderBy(x => x.QuesionId).ToList());
            }
            list2 = list2.OrderBy(x => x.QuesionId).ToList();

            int StructType = 0;
            int questionId = 0;
            if (list2.Count > 0)
            {
                StructType = list2[0].StructType;
                questionId = list2[0].QuesionId;
            }
            model.Key = StructType;
            model.Value = questionId;

            return model;
        }

        /// <summary>
        /// 获取当前问题在试卷中排第几个
        /// </summary>
        /// <param name="questionType">问题类型</param>
        /// <param name="questionId">问题ID</param>
        /// <returns></returns>
        public int GetCurrentIndex(int questionType, int questionId)
        {
            int index = 0;

            var model = ExamCaches.QuestionCache.Values.Where(x => x.Id == questionId).FirstOrDefault();

            //获取本题在list中的位置
            index = cache.Details.Where(x => x.QuesionId == questionId).Select(x => x.QuesionId).ToList().IndexOf(questionId);

            return index;
        }

        /// <summary>
        /// 返回排序后的题型最小值（及就是排在第一个单选题）
        /// </summary>
        /// <param name="questionType">问题类型</param>
        /// <param name="questionId">问题ID</param>
        /// <returns></returns>
        public KeyValue GetCharpterIdIndex()
        {
            var paix = GetTheoryQuestionType();

            KeyValue model = new KeyValue();
            model.Key = paix[0].Id;
            model.Value = paix[0].strIdList;
            return model;
        }


        /// <summary>
        /// 获取题型列表
        /// </summary>
        /// <param name="questionType">问题类型</param>
        /// <param name="questionId">问题ID</param>
        /// <returns></returns>
        public List<TheoryQuestionTypeVM> GetTheoryQuestionType()
        {

            //准备存放容器
            List<TheoryQuestionTypeVM> TheoryQuestionType = new List<TheoryQuestionTypeVM>();

            var scorlist = cache.ScoreInfo.ToList();
            for (int f = 0; f < scorlist.Count; f++)
            {
                List<int> QuestionType = scorlist[f].CharpterID.Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries).ToList().ConvertAll(x => Convert.ToInt32(x)).ToList();
                string key = scorlist[f].CharpterID;
                int value = QuestionType.Min();

                TheoryQuestionTypeVM type = new TheoryQuestionTypeVM();
                type.Id = value;
                type.strIdList = key;
                if (TrainingCaches.TheoryQuestionTypeCache.ContainsKey(value))
                {
                    type.TypeName = TrainingCaches.TheoryQuestionTypeCache[value].TypeName;
                }

                //题型Id
                int ty = 0;
                for (int a = 0; a<QuestionType.Count;a++ )
                {
                    ty = ExamCaches.QuestionCache.Values.Where(x => x.CharpterID == QuestionType[a]).Select(x => x.StructType).FirstOrDefault();
                    if(ty!=0){
                        break;
                    }
                }
                 
                if (ty != 5)
                {
                    type.Sort = ty;
                }
                else
                {
                    if (type.TypeName == "简答题")
                    {
                        type.Sort = 6;
                    }
                    else if (type.TypeName == "论述题")
                    {
                        type.Sort = 7;
                    }
                    else
                    {
                        type.Sort = 8;
                    }
                }

                TheoryQuestionType.Add(type);
            }
            //TheoryQuestionType = TheoryQuestionType.OrderBy(x => x.Id).ToList();

            TheoryQuestionType = TheoryQuestionType.OrderBy(x => x.Sort).ToList();

            return TheoryQuestionType;
        }

        /// <summary>
        /// 获取题型列表下所有题目
        /// </summary>
        /// <param name="questionType">问题类型</param>
        /// <param name="questionId">问题ID</param>
        /// <returns></returns>
        public List<PaperDetailVM> GetPaperDetail()
        {

            //准备存放容器
            List<PaperDetailVM> list = cache.Details.ToList();
            list.ForEach(x =>
            {
                x.StructTypeId = ExamCaches.QuestionCache.Where(a => a.Value.Id == x.QuesionId).Select(a => a.Value.CharpterID).FirstOrDefault();
            });

            List<PaperDetailVM> list2 = new List<PaperDetailVM>();
            var questionType = GetTheoryQuestionType();

            foreach (var item in questionType)
            {
                string[] strAn = item.strIdList.Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries);
                List<PaperDetailVM> l = new List<PaperDetailVM>();
                for (int an = 0; an < strAn.Length; an++)
                {
                    l.AddRange(list.Where(a => a.StructTypeId == Convert.ToInt32(strAn[an])).OrderBy(x => x.QuesionId).ToList());
                }
                l = l.OrderBy(x => x.QuesionId).ToList();
                list2.AddRange(l);
            }

            return list2;
        }

        /// <summary>
        /// 根据当前问题位置，获取问题(问题类型，问题ID)
        /// </summary>
        /// <param name="index">位置</param>
        /// <returns>问题(问题类型，问题ID)</returns>
        public KeyValue GetKeyValueByIndex(int index, int PaperId, int? type, int LibraryId)
        {
            KeyValue model = new KeyValue();
            // var papercont = ExamCaches.PaperCache.Where(x => x.Value.Id == PaperId ).FirstOrDefault();

            PaperVM papercont = null;

            if (LibraryId == 23)
            {
                //认证考试
                papercont = MvcHelper.User.ExamInfo.Where(x => x.Value.Id == PaperId).Select(x => x.Value).FirstOrDefault();
            }
            else
            {
                //理论考试
                papercont = ExamCaches.PaperCache.Where(x => x.Value.Id == PaperId).Select(x => x.Value).FirstOrDefault();
            }

            //准备数据
            List<PaperDetailVM> list = papercont.Details.ToList();
            list.ForEach(x =>
            {
                if (ExamCaches.QuestionCache.ContainsKey(x.QuesionId))
                {
                    x.StructType = ExamCaches.QuestionCache[x.QuesionId].StructType;
                    x.StructTypeId = ExamCaches.QuestionCache[x.QuesionId].CharpterID;
                }
            });

            List<PaperDetailVM> list2 = new List<PaperDetailVM>();

            var charpter2 = GetTheoryQuestionType();
            string strcharpter2 = null;
            for (int a = 0; a < charpter2.Count; a++)
            {
                string[] An = charpter2[a].strIdList.Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries);
                for (int b = 0; b < An.Length; b++)
                {
                    if (An[b] == type.ToString())
                    {
                        strcharpter2 = charpter2[a].strIdList;
                        break;
                    }
                }
            }

            string[] strAn = strcharpter2.Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries);
            for (int an = 0; an < strAn.Length; an++)
            {
                list2.AddRange(list.Where(a => a.StructTypeId == Convert.ToInt32(strAn[an])).OrderBy(x => x.QuesionId).ToList());
            }
            list2 = list2.OrderBy(x => x.QuesionId).ToList();

            model.Key = list2[index].StructType;
            model.Value = list2[index].QuesionId;

            return model;
        }

        /// <summary>
        /// 获取用户填写的答案
        /// </summary>
        /// <param name="questionType">问题类型</param>
        /// <param name="questionId">问题ID</param>
        /// <returns>答案</returns>
        public List<int> GetUserAnswers(int questionType, int questionId)
        {
            int userId = MvcHelper.User.Id;
            List<int> answer = null;
            if (cache2.UserAnswer != null && cache2.UserAnswer.Count > 0)
            {
                if (questionType == (int)StructType.SelectRadio || questionType == (int)StructType.SelectCheckBox || questionType == (int)StructType.Determine)
                {
                    var myAnswers = cache2.UserAnswer.Where(x => x.QuesionId == questionId && x.UserId == userId).Select(x => x.Answer1).ToList();
                    if (myAnswers != null && myAnswers.Count > 0)
                    {
                        answer = new List<int>();
                        foreach (var item in myAnswers)
                        {
                            if (item.HasValue)
                            {
                                answer.Add(item.Value);
                            }
                        }
                    }
                }
            }

            return answer;
        }

        /// <summary>
        /// 获取用户填写的答案
        /// </summary>
        /// <param name="questionType">问题类型</param>
        /// <param name="questionId">问题ID</param>
        /// <returns>答案</returns>
        public List<string> GetUserAnswers2(int questionType, int questionId)
        {
            int userId = MvcHelper.User.Id;
            List<string> answer = null;
            if (cache2.UserAnswer != null && cache2.UserAnswer.Count > 0)
            {
                answer = cache2.UserAnswer.Where(x => x.QuesionId == questionId && x.UserId == userId).Select(x => x.Answer2).ToList();
            }
            return answer;
        }

        /// <summary>
        /// 获取用户填写的答案
        /// </summary>
        /// <param name="questionType">问题类型</param>
        /// <param name="questionId">问题ID</param>
        /// <returns>答案</returns>
        public List<string> GetUserAnswers3(int questionType, int questionId)
        {
            int userId = MvcHelper.User.Id;
            List<string> answer = null;
            if (cache2.UserAnswer != null && cache2.UserAnswer.Count > 0)
            {
                answer = cache2.UserAnswer.Where(x => x.QuesionId == questionId && x.UserId == userId).Select(x => x.Answer3).ToList();
            }
            return answer;
        }

        /// <summary>
        /// 获取问题标记
        /// </summary>
        /// <param name="questionType">问题类型</param>
        /// <param name="questionId">问题ID</param>
        /// <returns>是否被标记</returns>
        public bool GetIsMark(int questionType, int questionId)
        {
            var bo = false;
            if (cache2.UserAnswerResult != null && cache2.UserAnswerResult.Count > 0)
            {
                var model = cache2.UserAnswerResult.Where(x => x.QuesionId == questionId && x.UserId == MvcHelper.User.Id).FirstOrDefault();
                if (model != null)
                {
                    bo = model.IsMark;
                }
            }
            return bo;

        }

        /// <summary>
        /// 获取展示信息
        /// </summary>
        /// <param name="questionType">问题类型</param>
        /// <param name="questionId">问题ID</param>
        /// <returns>展示信息</returns>
        public string GetInfoShow(int questionType, int questionId, int PaperId)
        {
            StringBuilder sb = new StringBuilder();

            //准备存放容器
            List<PaperDetailVM> list = cache.Details.ToList();
            list.ForEach(x =>
            {
                if (ExamCaches.QuestionCache.ContainsKey(x.QuesionId))
                {
                    x.StructTypeId = ExamCaches.QuestionCache[x.QuesionId].CharpterID;
                }
            });

            List<PaperDetailVM> list2 = new List<PaperDetailVM>();

            var qType = GetTheoryQuestionType();

            string[] qTypes = null;

            for (int ag = 0; ag < qType.Count; ag++)
            {
                string[] strAn2 = qType[ag].strIdList.Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries);
                for (int g = 0; g < strAn2.Length; g++)
                {
                    if (strAn2[g] == questionType.ToString())
                    {
                        qTypes = qType[ag].strIdList.Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries);
                    }
                }
            }

            foreach (var item in qTypes)
            {
                string[] strAn = item.Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries);
                List<PaperDetailVM> l = new List<PaperDetailVM>();
                for (int an = 0; an < strAn.Length; an++)
                {
                    l.AddRange(list.Where(a => a.StructTypeId == Convert.ToInt32(strAn[an])).OrderBy(x => x.QuesionId).ToList());
                }

                list2.AddRange(l);
            }
            list2 = list2.OrderBy(x => x.QuesionId).ToList();
            var qId = cache.Details.First(x => x.QuesionId == questionId);

            var typeName = TrainingCaches.TheoryQuestionTypeCache.Where(x => x.Value.Id == questionType).Select(x => x.Value.TypeName).FirstOrDefault();
            var Score = cache.ScoreInfo.Where(x => x.CharpterID.Contains(questionType.ToString())).FirstOrDefault();
            decimal RadioScore = Score.Score;
            sb.Append(typeName);
            sb.Append("（共").Append(list2.Count).Append("题，");
            sb.Append("每题").Append(RadioScore.ToString("0.0")).Append("分，");
            sb.Append("共").Append((list2.Count * RadioScore).ToString("0.0")).Append("分）");
            sb.Append(", 当前为第<strong>").Append(list2.IndexOf(qId) + 1).Append("</strong>题");


            return sb.ToString();
        }

        /// <summary>
        /// 获取主题干
        /// </summary>
        /// <param name="questionType">问题类型</param>
        /// <param name="questionId">问题ID</param>
        /// <returns>主题干</returns>
        public string GetTopic(int questionType, int questionId, int PaperId)
        {
            //准备数据
            List<PaperDetailVM> list = cache.Details.Where(x => x.ExamPaperId == PaperId).Distinct().ToList();
            list.ForEach(x =>
            {
                if (ExamCaches.QuestionCache.ContainsKey(x.QuesionId))
                {
                    x.StructTypeId = ExamCaches.QuestionCache[x.QuesionId].CharpterID;
                }
            });

            StringBuilder sb = new StringBuilder();
            var charpter = GetTheoryQuestionType();
            List<int> strcharpter = null;
            for (int a = 0; a < charpter.Count; a++)
            {
                string[] An = charpter[a].strIdList.Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries);
                for (int b = 0; b < An.Length; b++)
                {
                    if (An[b] == questionType.ToString())
                    {
                        strcharpter = charpter[a].strIdList.Split(',').ToList().ConvertAll<int>(y => int.Parse(y));
                    }
                }
            }

            //准备数据
            list = list.Where(a => strcharpter.Contains(a.StructTypeId)).ToList();
            var qId = cache.Details.First(x => x.QuesionId == questionId);
            var mo1 = ExamCaches.QuestionCache.Where(x => x.Value.Id == questionId).FirstOrDefault();

            var typeName = TrainingCaches.TheoryQuestionTypeCache.Where(x => x.Value.Id == questionType).Select(x => x.Value.TypeName).FirstOrDefault();
            //拼接
            sb.Append(" <div style='margin-left:35px;'><div style='font-size:16px;float:left;height:80px;'>" + typeName + "&nbsp;" + (list.IndexOf(qId) + 1) + "&nbsp;:&nbsp;</div><div style='margin-left:5px;'>&nbsp;" + mo1.Value.Context + " </div></div>");

            return sb.ToString();
        }

        /// <summary>
        /// 获取选项
        /// </summary>
        /// <param name="questionId"></param>
        /// <returns></returns>
        public List<QuestionOptionVM> OptionList(int questionId)
        {
            List<QuestionOptionVM> option = new List<QuestionOptionVM>();

            var detail = ExamCaches.QuestionCache.Where(x => x.Value.Id == questionId).FirstOrDefault();
            option = detail.Value.OptionList;
            return option;
        }

        /// <summary>
        /// 获取附件
        /// </summary>
        /// <param name="questionId"></param>
        /// <returns></returns>
        public List<QuestionAttachmentsVM> Attachments(int questionId)
        {
            List<QuestionAttachmentsVM> option = new List<QuestionAttachmentsVM>();

            var detail = ExamCaches.QuestionCache.Where(x => x.Value.Id == questionId).FirstOrDefault();


            if (detail.Value.AttachmentList != null)
            {
                option = detail.Value.AttachmentList;
            }

            return option;
        }

    }
}