From c9f27610441de5fa38684ecf0c65f8047af0329d Mon Sep 17 00:00:00 2001
From: xiaochanghai <xiaochanghai@foxmail.com>
Date: Tue, 13 May 2025 18:22:33 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96=E8=AF=BE=E7=A8=8B=E5=88=86?=
 =?UTF-8?q?=E6=9E=90=E6=8E=A5=E5=8F=A3?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../ViewModels/Extend/QuestionErrorRanking.cs | 14 +++++++
 .../Ghre/Ghre_CourseServices.cs               | 39 ++++++++++++++++++-
 2 files changed, 51 insertions(+), 2 deletions(-)
 create mode 100644 Tiobon.Core.Model/ViewModels/Extend/QuestionErrorRanking.cs

diff --git a/Tiobon.Core.Model/ViewModels/Extend/QuestionErrorRanking.cs b/Tiobon.Core.Model/ViewModels/Extend/QuestionErrorRanking.cs
new file mode 100644
index 00000000..c567e5b2
--- /dev/null
+++ b/Tiobon.Core.Model/ViewModels/Extend/QuestionErrorRanking.cs
@@ -0,0 +1,14 @@
+namespace Tiobon.Core.Model.ViewModels.Extend;
+
+public class QuestionErrorRanking
+{
+    public long Id { get; set; }
+    public string QuestionContent { get; set; }
+    public string QuestionNo { get; set; }
+    public decimal ErrorCount { get; set; }
+    
+    public decimal TotalCount { get; set; }
+    public string Percent1 { get; set; }
+    public decimal Percent { get; set; }
+
+}
diff --git a/Tiobon.Core.Services/Ghre/Ghre_CourseServices.cs b/Tiobon.Core.Services/Ghre/Ghre_CourseServices.cs
index ebe123e4..997e86a9 100644
--- a/Tiobon.Core.Services/Ghre/Ghre_CourseServices.cs
+++ b/Tiobon.Core.Services/Ghre/Ghre_CourseServices.cs
@@ -1406,7 +1406,7 @@ public class Ghre_CourseServices : BaseServices<Ghre_Course, Ghre_CourseDto, Ins
 
         var sql1 = GetQueryString(sql, filter.pageNum, filter.pageSize, filter.orderBy);
 
-        var data =   DbAccess.QueryList<CourseAndScene>(sql1);
+        var data = DbAccess.QueryList<CourseAndScene>(sql1);
 
         totalCount = await Db.Ado.GetIntAsync("SELECT COUNT(0) from Ghre_CourseScene_V A WHERE 1=1");
 
@@ -1558,7 +1558,6 @@ public class Ghre_CourseServices : BaseServices<Ghre_Course, Ghre_CourseDto, Ins
                 b.PaperName
             })
             .ToListAsync();
-        var examRanking = new JArray();
         var examRankings = new JArray();
 
         for (int i = 0; i < exams.Count; i++)
@@ -1596,6 +1595,42 @@ public class Ghre_CourseServices : BaseServices<Ghre_Course, Ghre_CourseDto, Ins
         data.ExamRankings = examRankings;
         #endregion
 
+        #region 错误率排名 
+
+        var questionErrorRankings = await Db.Queryable<Ghre_Question>()
+            .Where(x => x.CourseId == id || x.CourseIds.Contains(id.ToString()))
+            .Select(x => new QuestionErrorRanking
+            {
+                Id = x.Id,
+                QuestionNo = x.QuestionNo,
+                QuestionContent = x.QuestionContent
+            })
+            .ToListAsync();
+
+        var questionIds = questionErrorRankings.Select(x => x.Id).ToList();
+
+        var recordDetails = await Db.Queryable<Ghre_ExamRecordDetail>()
+            .Where(x => x.QuestionId != null && questionIds.Contains(x.QuestionId.Value))
+            .ToListAsync();
+
+        for (int i = 0; i < questionErrorRankings.Count; i++)
+        {
+            questionErrorRankings[i].TotalCount = recordDetails.Where(x => x.QuestionId == questionErrorRankings[i].Id).Count();
+            questionErrorRankings[i].ErrorCount = recordDetails.Where(x => x.QuestionId == questionErrorRankings[i].Id && x.IsCorrect != true).Count();
+
+            if (questionErrorRankings[i].ErrorCount > 0 && questionErrorRankings[i].TotalCount > 0)
+            {
+
+                decimal? Percent1 = questionErrorRankings[i].ErrorCount / questionErrorRankings[i].TotalCount;
+                questionErrorRankings[i].Percent1 = Percent1.TrimDecimalString(2);
+                questionErrorRankings[i].Percent = Convert.ToDecimal((Percent1 * 100).TrimDecimalString(0));
+            }
+        }
+        questionErrorRankings = questionErrorRankings.OrderByDescending(x => x.Percent).ToList();
+        data.QuestionErrorRankings = questionErrorRankings;
+
+        #endregion
+
         obj.Data = data;
         obj.Success = true;
         obj.Status = 200;