补考系统

2026-07-25 19:16:11 +08:00
parent 376bc0d0a1
commit 44e90ae35f
12 changed files with 1765 additions and 2 deletions
@@ -0,0 +1,125 @@
+using Jiaowu.Api.Domain.Academic;
+using Jiaowu.Api.Infrastructure.Persistence;
+using Microsoft.EntityFrameworkCore;
+
+namespace Jiaowu.Api.Infrastructure.Exams;
+
+public sealed class MakeupExamEligibilityService(AppDbContext db)
+{
+    public async Task<List<EligibleStudent>> GetEligibleStudentsAsync(
+        Guid teachingTaskId,
+        CancellationToken cancellationToken)
+    {
+        var gradeSheet = await db.GradeSheets.AsNoTracking()
+            .Where(x => x.TeachingTaskId == teachingTaskId)
+            .Select(x => new { x.Id, x.TeachingTask!.AcademicTermId })
+            .FirstOrDefaultAsync(cancellationToken);
+
+        if (gradeSheet is null)
+            return [];
+
+        // Find students already enrolled in any makeup session for this teaching task
+        var alreadyEnrolledIds = await db.MakeupExamEnrollments.AsNoTracking()
+            .Where(x => x.MakeupExamSession!.TeachingTaskId == teachingTaskId &&
+                        x.MakeupExamSession!.MakeupExamPlan!.Status != MakeupExamPlanStatus.Archived)
+            .Select(x => x.StudentId)
+            .Distinct()
+            .ToListAsync(cancellationToken);
+
+        var enrolledSet = alreadyEnrolledIds.ToHashSet();
+        var results = new Dictionary<Guid, EligibleStudent>();
+
+        // 1. Approved deferred exams (highest priority)
+        var deferredStudents = await db.DeferredExams.AsNoTracking()
+            .Where(x => x.TeachingTaskId == teachingTaskId &&
+                        x.Status == ApprovalStatus.Approved &&
+                        !enrolledSet.Contains(x.StudentId))
+            .Select(x => new
+            {
+                x.StudentId,
+                x.Student!.StudentNumber,
+                x.Student.Name,
+                ClassName = x.Student.AdministrativeClass!.Name,
+                x.Id
+            })
+            .ToListAsync(cancellationToken);
+
+        foreach (var s in deferredStudents)
+        {
+            if (!results.ContainsKey(s.StudentId))
+            {
+                results[s.StudentId] = new EligibleStudent(
+                    s.StudentId, s.StudentNumber, s.Name, s.ClassName,
+                    MakeupReason.DeferredApproved, null,
+                    SourceDeferredExamId: s.Id);
+            }
+        }
+
+        // 2. Absent students
+        var absentStudents = await db.GradeRecords.AsNoTracking()
+            .Where(x => x.GradeSheetId == gradeSheet.Id &&
+                        x.ExamStatus == GradeExamStatus.Absent &&
+                        !enrolledSet.Contains(x.StudentId))
+            .Select(x => new
+            {
+                x.StudentId,
+                x.Student!.StudentNumber,
+                x.Student.Name,
+                ClassName = x.Student.AdministrativeClass!.Name,
+                GradeRecordId = (Guid?)x.Id
+            })
+            .ToListAsync(cancellationToken);
+
+        foreach (var s in absentStudents)
+        {
+            if (!results.ContainsKey(s.StudentId))
+            {
+                results[s.StudentId] = new EligibleStudent(
+                    s.StudentId, s.StudentNumber, s.Name, s.ClassName,
+                    MakeupReason.Absent, null,
+                    SourceGradeRecordId: s.GradeRecordId);
+            }
+        }
+
+        // 3. Failed students (TotalScore < 60, Normal status)
+        var failedStudents = await db.GradeRecords.AsNoTracking()
+            .Where(x => x.GradeSheetId == gradeSheet.Id &&
+                        x.ExamStatus == GradeExamStatus.Normal &&
+                        x.TotalScore < 60 &&
+                        !enrolledSet.Contains(x.StudentId))
+            .Select(x => new
+            {
+                x.StudentId,
+                x.Student!.StudentNumber,
+                x.Student.Name,
+                ClassName = x.Student.AdministrativeClass!.Name,
+                x.TotalScore,
+                GradeRecordId = (Guid?)x.Id
+            })
+            .ToListAsync(cancellationToken);
+
+        foreach (var s in failedStudents)
+        {
+            if (!results.ContainsKey(s.StudentId))
+            {
+                results[s.StudentId] = new EligibleStudent(
+                    s.StudentId, s.StudentNumber, s.Name, s.ClassName,
+                    MakeupReason.Failed, s.TotalScore,
+                    SourceGradeRecordId: s.GradeRecordId);
+            }
+        }
+
+        return [.. results.Values.OrderBy(x => x.StudentNumber)];
+    }
+}
+
+public sealed record EligibleStudent(
+    Guid StudentId,
+    string StudentNumber,
+    string Name,
+    string ClassName,
+    MakeupReason Reason,
+    decimal? TotalScore = null,
+    Guid? SourceGradeRecordId = null,
+    Guid? SourceDeferredExamId = null,
+    string? Detail = null);