using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using WeiSha.Core;
using WeiSha.Data;
using Song.Entities;
using Song.ServiceInterfaces;

namespace Song.DataQuery.SQLite
{
 public class StudentCom
 {
 /// <summary>
 /// 高频错题
 /// </summary>
 /// <param name="couid">课程ID</param>
 /// <param name="type">题型</param>
 /// <param name="count">取多少条</param>
 /// <returns></returns>
 public Questions[] QuesOftenwrong(long couid, int type, int count)
 {
 string sql = @"
 select {top} sq.count as Qus_Errornum,c.* 
 from ""Questions"" as c 
 inner join
 (
 SELECT ""Qus_ID"",COUNT(*) as count
 FROM ""Student_Ques""
 where {couid} and {type} group by ""Qus_ID""
 ) as sq on c.""Qus_ID"" = sq.""Qus_ID""
 order by sq.count desc ";
 sql = sql.Replace("{couid}", couid > 0 ? @"""Cou_ID""=" + couid : "1=1");
 sql = sql.Replace("{type}", type > 0 ? @"""Qus_Type""=" + type : "1=1");
 if (count > 0) sql += "limit " + count + " offset 0";
 return Gateway.Default.FromSql(sql).ToArray<Questions>();
 }
 /// <summary>
 /// 登录日志的统计信息
 /// </summary>
 /// <param name="orgid"></param>
 /// <param name="start"></param>
 /// <param name="end"></param>
 /// <param name="province"></param>
 /// <param name="city"></param>
 /// <returns>返回三列,area:行政区划名称,code:区划编码,count:登录人次</returns>
 public DataTable LoginLogsSummary(int orgid, DateTime? start, DateTime? end, string province, string city)
 {
 //支持Posgresql 
 string sql = @"SELECT 
 CASE 
							WHEN ""{{field}}"" = ''
 THEN 'Other'
 ELSE COALESCE(""{{field}}"", 'Other')
 END AS area
 ,MAX(""Lso_Code"") as code
 ,count(*) as count
 FROM ""LogForStudentOnline""
 WHERE {{orgid}} and {{start}} and {{end}} and {{parent}}='{{area}}'
 GROUP BY area order by count desc";
 sql = sql.Replace("{{orgid}}", orgid > 0 ? @"""Org_ID""=" + orgid : "1=1");
 sql = sql.Replace("{{start}}", start == null ? "1=1" : @"""Lso_LoginTime"">='" + ((DateTime)start).ToString("yyyy-MM-dd HH:mm:ss") + "'");
 sql = sql.Replace("{{end}}", end == null ? "1=1" : @"""Lso_LoginTime""<'" + ((DateTime)end).ToString("yyyy-MM-dd HH:mm:ss") + "'");
 if (string.IsNullOrWhiteSpace(province) && string.IsNullOrWhiteSpace(city))
 {
 sql = sql.Replace("{{field}}", "Lso_Province");
 sql = sql.Replace("{{parent}}", "''");
 sql = sql.Replace("{{area}}", "");
 }
 else if (!string.IsNullOrWhiteSpace(province))
 {
 sql = sql.Replace("{{field}}", "Lso_City");
 sql = sql.Replace("{{parent}}", @"""Lso_Province""");
 sql = sql.Replace("{{area}}", province);
 }
 else if (!string.IsNullOrWhiteSpace(city))
 {
 sql = sql.Replace("{{field}}", "Lso_District");
 sql = sql.Replace("{{parent}}", @"""Lso_City""");
 sql = sql.Replace("{{area}}", city);
 }

 DataSet ds = Gateway.Default.FromSql(sql).ToDataSet();
 return ds.Tables[0];
 }

 /// <summary>
 /// 错题所属的课程
 /// </summary>
 /// <param name="stid">学员id</param>
 /// <param name="couname">课程名称,可模糊查询</param>
 /// <param name="size"></param>
 /// <param name="index"></param>
 /// <param name="countSum"></param>
 /// <returns></returns>
 public Course[] QuesForCourse(int stid, string couname, int size, int index, out int countSum)
 {
 //计算满足条件的数量
 string sumSql = @"select COUNT(*) from ""Course"" as c inner join 
 (select ""Cou_ID"" from ""Student_Ques"" where ""Ac_ID"" = {stid} group by ""Cou_ID"") as q
 on c.""Cou_ID"" = q.""Cou_ID"" where {course}";
 sumSql = sumSql.Replace("{stid}", stid.ToString());
 sumSql = sumSql.Replace("{course}", string.IsNullOrWhiteSpace(couname) ? "1=1" : @"""Cou_Name"" LIKE '%" + couname + "%'");
 countSum = Convert.ToInt32(Gateway.Default.FromSql(sumSql).ToScalar());

 //分页获取数据
 string sql = @"select cou.*,sq.count from ""Course"" as cou inner join 
 (select ""Cou_ID"", max(""Squs_ID"") as sid, COUNT(*) as count from ""Student_Ques"" where ""Ac_ID"" = {stid} group by ""Cou_ID"") as sq
 on cou.""Cou_ID"" = sq.""Cou_ID"" where {course} ORDER BY sq.count desc
 LIMIT {{size}} OFFSET {{index}}";

 sql = sql.Replace("{stid}", stid.ToString());
 sql = sql.Replace("{course}", string.IsNullOrWhiteSpace(couname) ? "1=1" : @"""Cou_Name"" LIKE '%" + couname + "%'");
 //分页
 sql = sql.Replace("{{size}}", size.ToString());
 sql = sql.Replace("{{index}}", ((index - 1) * size).ToString());

 return Gateway.Default.FromSql(sql).ToArray<Course>();

 }
 /// <summary>
 /// 购买的课程的学员,不重复
 /// </summary>
 /// <param name="orgid"></param>
 /// <param name="stsid"></param>
 /// <param name="couid"></param>
 /// <param name="acc"></param>
 /// <param name="name"></param>
 /// <param name="idcard"></param>
 /// <param name="mobi"></param>
 /// <param name="start"></param>
 /// <param name="end"></param>
 /// <param name="size"></param>
 /// <param name="index"></param>
 /// <param name="countSum"></param>
 /// <returns>Ac_CurrCourse列为学员选修的课程数</returns>
 public List<Accounts> PurchasePager(int orgid, long stsid, long couid,
 string acc, string name, string idcard, string mobi,
 DateTime? start, DateTime? end, int size, int index, out int countSum)
 {
 //支持Sqlite
 //计算总数的脚本
 string sqlsum = @"select COUNT(*) as total from 
 (select ""Ac_ID"",count(""Ac_ID"") as count from 
		(select * from ""Student_Course"" where {{where4sc}} and ({{start}} and {{end}}) ) as ss group by ""Ac_ID"" 
	) as sc inner join
 ""Accounts"" as a on sc.""Ac_ID"" = a.""Ac_ID"" {{where4acc}}"; ;
 //购买记录的条件
 string where4sc = "{{orgid}} and {{couid}} and {{stsid}}";
 where4sc = where4sc.Replace("{{orgid}}", orgid > 0 ? @"""Student_Course"".""Org_ID"" =" + orgid.ToString() : "1=1");
 where4sc = where4sc.Replace("{{couid}}", couid > 0 ? @"""Student_Course"".""Cou_ID"" =" + couid.ToString() : "1=1");
 where4sc = where4sc.Replace("{{stsid}}", stsid > 0 ? @"""Student_Course"".""Sts_ID"" =" + stsid.ToString() : "1=1");
 //学员查询条件
 string where4acc = "where {{acc}} and {{name}} and {{idcard}} and {{mobi}}";
 where4acc = where4acc.Replace("{{acc}}", string.IsNullOrWhiteSpace(acc) ? "1=1" : @"a.""Ac_AccName"" LIKE '%" + acc + "%'");
 where4acc = where4acc.Replace("{{name}}", string.IsNullOrWhiteSpace(name) ? "1=1" : @"a.""Ac_Name"" LIKE '%" + name + "%'");
 where4acc = where4acc.Replace("{{idcard}}", string.IsNullOrWhiteSpace(idcard) ? "1=1" : @"a.""Ac_IDCardNumber"" LIKE '%" + idcard + "%'");
 where4acc = where4acc.Replace("{{mobi}}", string.IsNullOrWhiteSpace(mobi) ? "1=1" : @"a.""Ac_MobiTel1"" LIKE '%" + mobi + "%'");

 //计算满足条件的记录总数 
 sqlsum = sqlsum.Replace("{{start}}", start == null ? "1=1" : @"""Stc_StartTime"">='" + ((DateTime)start).ToString("yyyy-MM-dd HH:mm:ss") + "'");
 sqlsum = sqlsum.Replace("{{end}}", end == null ? "1=1" : @"""Stc_StartTime""<'" + ((DateTime)end).ToString("yyyy-MM-dd HH:mm:ss") + "'");
 sqlsum = sqlsum.Replace("{{where4acc}}", where4acc);
 sqlsum = sqlsum.Replace("{{where4sc}}", where4sc);
 object o = Gateway.Default.FromSql(sqlsum).ToScalar();
 countSum = Convert.ToInt32(o);

 //分页查询的脚本
 string sqljquery = @"
 select a.""Ac_ID"",sc.count as Ac_CurrCourse,""Ac_AccName"",""Ac_Name"",""Ac_IDCardNumber"",""Ac_Age"",""Ac_Photo"",
 ""Ac_Money"",""Ac_Point"",""Ac_Coupon"",""Org_ID"",""Sts_ID"",""Sts_Name"",""Ac_Sex"",""Ac_MobiTel1"",""Ac_MobiTel2""
 from
 (
 select * from
 (select ""Ac_ID"", count(""Ac_ID"") as count from
 (select * from ""Student_Course"" {{where4acc}} and({{start}} and {{end}})) as ss group by ""Ac_ID""
 ) order by count desc
 ) as sc

 inner join
 ""Accounts"" as a on sc.""Ac_ID"" = a.""Ac_ID"" {{where4acc}}

 LIMIT {{size}} OFFSET {{index}}
 ";
 sqljquery = sqljquery.Replace("{{start}}", start == null ? "1=1" : @"""Stc_StartTime"">='" + ((DateTime)start).ToString("yyyy-MM-dd HH:mm:ss") + "'");
 sqljquery = sqljquery.Replace("{{end}}", end == null ? "1=1" : @"""Stc_StartTime""<'" + ((DateTime)end).ToString("yyyy-MM-dd HH:mm:ss") + "'");
 sqljquery = sqljquery.Replace("{{where4acc}}", where4acc);
 sqljquery = sqljquery.Replace("{{where4sc}}", where4sc);

 //分页
 sqljquery = sqljquery.Replace("{{size}}", size.ToString());
 sqljquery = sqljquery.Replace("{{index}}", ((index - 1) * size).ToString());

 return Gateway.Default.FromSql(sqljquery).ToList<Accounts>();
 }
 /// <summary>
 /// 学员的活跃情况
 /// </summary>
 /// <param name="orgid">机构id</param>
 /// <param name="stsid">学员组id</param>
 /// <param name="acc">账号</param>
 /// <param name="name">姓名</param>
 /// <param name="mobi">手机号</param>
 /// <param name="idcard">身份证号</param>
 /// <param name="code">学号</param>
 /// <param name="orderby">排序字段</param>
 /// <param name="orderpattr">排序方式,asc或desc</param>
 /// <returns></returns>
 public DataTable Activation(int orgid, long stsid, string acc, string name, string mobi, string idcard, string code,
 string orderby, string orderpattr,
 int size, int index, out int countSum)
 {
 string sql = @"
	 select acc.""Ac_ID"",""Ac_Name"",""Ac_AccName"",""Ac_Sex"",""Ac_Photo"",""Ac_IDCardNumber"",""Ac_MobiTel1"",""Ac_LastTime"",""Sts_ID"",""Sts_Name"",""Ac_Money""
		 ,logincount,logintime
		 ,coursecount,rechargecount,lastrecharge,laststudy,lastexrcise,lasttest,lastexam
 from ""Accounts"" as acc

 left join --登录次数与最后登录时间
 (select ""Ac_ID"", COUNT(0) as logincount, max(""Lso_CrtTime"") as logintime from ""LogForStudentOnline"" group by ""Ac_ID"") as ol

 on acc.""Ac_ID"" = ol.""Ac_ID""

 left join --课程购买个数
 (select ""Ac_ID"", COUNT(0) as coursecount from ""Student_Course"" group by ""Ac_ID"") as buy

 on acc.""Ac_ID"" = buy.""Ac_ID""

 left join ----资金动向
 (select ""Ac_ID"", COUNT(*) as rechargecount, max(""Ma_CrtTime"") as lastrecharge from ""MoneyAccount"" where ""Ma_Type"" = 2 group by ""Ac_ID"") as recharge

 on acc.""Ac_ID"" = recharge.""Ac_ID""

 left join --视频学习记录
 (select ""Ac_ID"", max(""Lss_LastTime"") as laststudy from ""LogForStudentStudy"" group by ""Ac_ID"") as video

 on acc.""Ac_ID"" = video.""Ac_ID""

 left join --试题练习记录
 (select ""Ac_ID"", max(""Lse_LastTime"") as lastexrcise from ""LogForStudentExercise"" group by ""Ac_ID"") as ques

 on acc.""Ac_ID"" = ques.""Ac_ID""

 left join --测试成绩
 (select ""Ac_ID"", max(""Tr_CrtTime"") as lasttest from ""TestResults"" group by ""Ac_ID"") as test

 on acc.""Ac_ID"" = test.""Ac_ID""

 left join --考试成绩
 (select ""Ac_ID"", max(""Exr_CrtTime"") as lastexam from ""ExamResults"" group by ""Ac_ID"") as exam

 on acc.""Ac_ID"" = exam.""Ac_ID""
 --查询条件
 where {{where}}

 ORDER BY ""{{orderby}}"" {{orderpattr}}
 LIMIT {{size}} OFFSET {{index}}";
 //查询条件
 string wheresql = @" {{orgid}} and {{stsid}} and {{acc}} and {{name}} and {{mobi}} and {{idcard}} and {{code}}";
 wheresql = wheresql.Replace("{{orgid}}", orgid <= 0 ? "1=1" : @"""Org_ID""=" + orgid);
 wheresql = wheresql.Replace("{{stsid}}", stsid <= 0 ? "1=1" : @"""Sts_ID""=" + stsid);
 wheresql = wheresql.Replace("{{acc}}", string.IsNullOrWhiteSpace(acc) ? "1=1" : @"""Ac_AccName"" LIKE '%" + acc + "%'");
 wheresql = wheresql.Replace("{{name}}", string.IsNullOrWhiteSpace(name) ? "1=1" : @"""Ac_Name"" LIKE '%" + name + "%'");
 wheresql = wheresql.Replace("{{mobi}}", string.IsNullOrWhiteSpace(mobi) ? "1=1" : @"""Ac_MobiTel1"" LIKE '%" + mobi + "%'");
 wheresql = wheresql.Replace("{{idcard}}", string.IsNullOrWhiteSpace(idcard) ? "1=1" : @"""Ac_IDCardNumber"" LIKE '%" + idcard + "%'");
 wheresql = wheresql.Replace("{{code}}", string.IsNullOrWhiteSpace(code) ? "1=1" : @"""Ac_CodeNumber"" LIKE '%" + code + "%'");
 //获取记录总数
 string sumSql = @"select COUNT(*) from ""Accounts"" where " + wheresql;
 countSum = Convert.ToInt32(Gateway.Default.FromSql(sumSql).ToScalar());

 //查询
 sql = sql.Replace("{{where}}", wheresql);
 //排序条件与方式
 sql = sql.Replace("{{orderby}}", string.IsNullOrWhiteSpace(orderby) ? "Ac_LastTime" : orderby);
 sql = sql.Replace("{{orderpattr}}", "asc".Equals(orderpattr, StringComparison.OrdinalIgnoreCase) ? "ASC" : "DESC");
 //分页
 sql = sql.Replace("{{size}}", size.ToString());
 sql = sql.Replace("{{index}}", ((index - 1) * size).ToString());

 DataSet ds = Gateway.Default.FromSql(sql).ToDataSet();
 return ds.Tables[0];
 }
 /// <summary>
 /// 学员的学习记录
 /// </summary>
 /// <param name="acid">学员id</param>
 /// <returns>datatable中,LastTime:最后学习时间; studyTime:累计学习时间,complete:完成度百分比</returns>
 public DataTable StudentStudyCourseLog(int acid)
 {
 Accounts student = Gateway.Default.From<Accounts>().Where(Accounts._.Ac_ID == acid).ToFirst<Accounts>();
 if (student == null) throw new Exception("当前学员不存在!");
 Organization org = Gateway.Default.From<Organization>().Where(Organization._.Org_ID == student.Org_ID).ToFirst<Organization>();
 if (org == null) throw new Exception("学员所在的机构不存在!");
 WeiSha.Core.CustomConfig config = CustomConfig.Load(org.Org_Config);
 //容差,例如完成度小于5%,则默认100%
 int tolerance = config["VideoTolerance"].Value.Int32 ?? 5;

 string sql = @"
 select ""Cou_ID"",""Cou_Name"",""Sbj_ID"",lastTime,studyTime,complete from ""Course"" as c inner join 
 (select s.couid, max(lastTime) as lastTime, sum(studyTime) as studyTime,
 sum(case when complete >= 100 then 100 else complete end) as complete

 from
 (SELECT ""Ol_ID"", MAX(""Cou_ID"") as couid, MAX(""Lss_LastTime"") as lastTime,
 sum(""Lss_StudyTime"") as studyTime, MAX(""Lss_Duration"") as totalTime, MAX(""Lss_PlayTime"") as playTime,
 (case when max(""Lss_Duration"") > 0 then
 CAST((1000 * (CAST(sum(""Lss_StudyTime"") AS float) / sum(""Lss_Duration""))) AS float) * 100
 else 0 end
				 ) as complete

 FROM ""LogForStudentStudy"" where {{acid}} group by ""Ol_ID""
			 ) as s where s.totalTime > 0 group by s.couid
	 ) as tm on c.""Cou_ID"" = tm.couid ";
 sql = sql.Replace("{{acid}}", acid > 0 ? @"""Ac_ID"" = " + acid : "1=1");
 try
 {
 DataSet ds = Gateway.Default.FromSql(sql).ToDataSet();
 DataTable dt = ds.Tables[0];
 if (dt.Rows.Count > 0)
 {
 ///* 不要删除
 //*****如果没有购买的,则去除
 //购买的课程(含概试用的)
 int count = 0;
 List<Song.Entities.Course> cous = Business.Do<ICourse>().CourseForStudent(acid, null, 0, null, null);
 for (int i = 0; i < dt.Rows.Count; i++)
 {
 bool isExist = false;
 for (int j = 0; j < cous.Count; j++)
 {
 if (dt.Rows[i]["Cou_ID"].ToString() == cous[j].Cou_ID.ToString())
 {
 isExist = true;
 break;
 }
 }
 if (!isExist)
 {
 dt.Rows.RemoveAt(i);
 i--;
 }
 }
 // * */
 //计算完成度 
 foreach (DataRow dr in dt.Rows)
 {
 //课程的累计完成度
 double complete = Convert.ToDouble(dr["complete"].ToString());
 //课程id
 long couid = Convert.ToInt64(dr["Cou_ID"].ToString());
 int olnum = Business.Do<IOutline>().OutlineOfCount(couid, -1, true, true, true, null);
 //完成度
 double peracent = Math.Floor(complete / olnum * 100) / 100;
 dr["complete"] = peracent >= (100 - tolerance) ? 100 : peracent;
 }
 }
 return dt;
 }
 catch
 {
 return null;
 }
 }
 }
}