实验成绩导出

src/Jiaowu.Api/Controllers/ExperimentGradesController.cs

@@ -190,6 +190,84 @@ public sealed class ExperimentGradesController(
         });
     }
 
+    [HttpGet("teaching-tasks/{teachingTaskId:guid}/export.xlsx")]
+    [Authorize(Roles = Managers)]
+    public async Task<IActionResult> ExportTeachingTaskScores(
+        Guid teachingTaskId,
+        CancellationToken cancellationToken)
+    {
+        var sheets = await ScopedSheets()
+            .Where(sheet =>
+                sheet.ExperimentProject!.TeachingTaskId == teachingTaskId)
+            .Include(sheet => sheet.Records)
+            .ThenInclude(record => record.Student)
+            .ThenInclude(student => student!.AdministrativeClass)
+            .Include(sheet => sheet.ExperimentProject)
+            .ThenInclude(project => project!.TeachingTask)
+            .ThenInclude(task => task!.AcademicTerm)
+            .Include(sheet => sheet.ExperimentProject)
+            .ThenInclude(project => project!.TeachingTask)
+            .ThenInclude(task => task!.Course)
+            .ThenInclude(course => course!.College)
+            .AsSplitQuery()
+            .AsNoTracking()
+            .OrderBy(sheet => sheet.ExperimentProject!.Code)
+            .ToListAsync(cancellationToken);
+        if (sheets.Count == 0)
+            return NotFound();
+
+        var task = sheets[0].ExperimentProject!.TeachingTask!;
+        var course = task.Course!;
+        var students = sheets
+            .SelectMany(sheet => sheet.Records)
+            .Select(record => record.Student!)
+            .GroupBy(student => student.Id)
+            .Select(group => group.First())
+            .OrderBy(student => student.StudentNumber)
+            .ToList();
+        var aggregate = await ExperimentGradeAggregationService.CalculateAsync(
+            db,
+            teachingTaskId,
+            students.Select(student => student.Id).ToArray(),
+            cancellationToken);
+        var headers = new List<string>
+        {
+            "学期", "开课学院", "课程代码", "课程名称", "教学班",
+            "学号", "姓名", "行政班"
+        };
+        headers.AddRange(sheets.Select(sheet =>
+            $"{sheet.ExperimentProject!.Code}·{sheet.ExperimentProject.Name}" +
+            $"（{SheetStatusLabel(sheet.Status)}）"));
+        headers.Add("实验合成总分（仅已发布项目）");
+
+        var rows = students.Select(student =>
+        {
+            var values = new List<object?>
+            {
+                task.AcademicTerm!.Name,
+                course.College!.Name,
+                course.Code,
+                course.Name,
+                task.TaskNumber,
+                student.StudentNumber,
+                student.Name,
+                student.AdministrativeClass!.Name
+            };
+            values.AddRange(sheets.Select(sheet => (object?)sheet.Records
+                .FirstOrDefault(record => record.StudentId == student.Id)
+                ?.TotalScore));
+            values.Add(aggregate.Scores.GetValueOrDefault(student.Id));
+            return (IReadOnlyList<object?>)values;
+        }).ToList();
+        var bytes = ExcelWorkbookHelper.Create("课程实验成绩", headers, rows);
+        return File(bytes, ExcelWorkbookHelper.ContentType,
+            DownloadFileName.Export(
+                "课程实验成绩",
+                ".xlsx",
+                course.Code,
+                task.TaskNumber));
+    }
+
     [HttpGet("mine")]
     [Authorize(Roles = SystemRoles.Student)]
     public async Task<ActionResult> GetMine(CancellationToken cancellationToken)
@@ -1300,6 +1378,17 @@ public sealed class ExperimentGradesController(
         _ => "待登记"
     };
 
+    private static string SheetStatusLabel(ExperimentGradeSheetStatus status) =>
+        status switch
+        {
+            ExperimentGradeSheetStatus.Draft => "录入中",
+            ExperimentGradeSheetStatus.Submitted => "待审核",
+            ExperimentGradeSheetStatus.Approved => "审核通过",
+            ExperimentGradeSheetStatus.Published => "已发布",
+            ExperimentGradeSheetStatus.Returned => "已退回",
+            _ => status.ToString()
+        };
+
     private static bool TryParseParticipationStatus(
         ExcelRow row,
         out ExperimentParticipationStatus status,