实验成绩管理改为紧凑的课程分组视图

src/Jiaowu.Api/Controllers/ExperimentGradesController.cs

@@ -76,13 +76,25 @@ public sealed class ExperimentGradesController(
                     item.Teacher!.TeacherNumber.Contains(keyword) ||
                     item.Teacher.Name.Contains(keyword)));
 
-        var total = await source.CountAsync(cancellationToken);
-        var items = await source
-            .OrderByDescending(x => x.TeachingTask!.AcademicTerm!.StartDate)
-            .ThenBy(x => x.TeachingTask!.TaskNumber)
-            .ThenBy(x => x.Code)
+        var total = await source.Select(x => x.TeachingTaskId)
+            .Distinct()
+            .CountAsync(cancellationToken);
+        var taskIds = await source
+            .GroupBy(x => new
+            {
+                x.TeachingTaskId,
+                StartDate = x.TeachingTask!.AcademicTerm!.StartDate,
+                x.TeachingTask.TaskNumber
+            })
+            .OrderByDescending(x => x.Key.StartDate)
+            .ThenBy(x => x.Key.TaskNumber)
             .Skip((page - 1) * pageSize)
             .Take(pageSize)
+            .Select(x => x.Key.TeachingTaskId)
+            .ToListAsync(cancellationToken);
+        var projects = await source
+            .Where(x => taskIds.Contains(x.TeachingTaskId))
+            .OrderBy(x => x.Code)
             .Select(x => new
             {
                 x.Id,
@@ -124,6 +136,32 @@ public sealed class ExperimentGradesController(
                     }
             })
             .ToListAsync(cancellationToken);
+        var order = taskIds.Select((id, index) => new { id, index })
+            .ToDictionary(x => x.id, x => x.index);
+        var items = projects.GroupBy(x => x.TeachingTaskId)
+            .OrderBy(group => order[group.Key])
+            .Select(group =>
+            {
+                var first = group.First();
+                return new
+                {
+                    TeachingTaskId = group.Key,
+                    first.TaskNumber,
+                    first.TaskName,
+                    first.AcademicTermId,
+                    first.TermName,
+                    first.CourseCode,
+                    first.CourseName,
+                    first.CollegeName,
+                    first.TeacherNames,
+                    ProjectCount = group.Count(),
+                    SheetCount = group.Count(project => project.Sheet != null),
+                    ScoredCount = group.Sum(project => project.Sheet?.ScoredCount ?? 0),
+                    StudentCount = group.Sum(project => project.Sheet?.StudentCount ?? 0),
+                    Projects = group.ToList()
+                };
+            })
+            .ToList();
         return Ok(new
         {
             Items = items,