统一通知中心

src/Jiaowu.Api/Controllers/GradesController.cs

@@ -397,7 +397,19 @@ public sealed class GradesController(
         sheet.Status = GradeSheetStatus.Submitted;
         sheet.SubmittedAt = DateTime.UtcNow;
         sheet.ReviewComment = null;
-        return await SaveAsync(id, false, cancellationToken);
+        await db.SaveChangesAsync(cancellationToken);
+
+        // Notify college admins
+        var courseName = sheet.TeachingTask!.Course!.Name;
+        var collegeId = sheet.TeachingTask.Course.CollegeId;
+        await NotificationService.SendToRoleAsync(db,
+            SystemRoles.CollegeAdmin,
+            "成绩单待审核",
+            $"《{courseName}》成绩已提交，请及时审核。",
+            collegeId,
+            "/grades",
+            cancellationToken);
+        return NoContent();
     }
 
     [HttpPost("sheets/{id:guid}/approve")]
@@ -425,7 +437,20 @@ public sealed class GradesController(
         sheet.Status = GradeSheetStatus.Approved;
         sheet.ReviewedAt = DateTime.UtcNow;
         sheet.ReviewComment = null;
-        return await SaveAsync(id, false, cancellationToken);
+        await db.SaveChangesAsync(cancellationToken);
+
+        // Notify teachers
+        var teacherUserIds = await db.TeachingTaskTeachers
+            .Where(x => x.TeachingTaskId == sheet.TeachingTaskId)
+            .Select(x => x.Teacher!.UserId)
+            .Where(id => id != null)
+            .Select(id => id!.Value)
+            .ToListAsync(cancellationToken);
+        await NotificationService.SendToUserIdsAsync(db, teacherUserIds,
+            "成绩审核通过",
+            $"《{sheet.TeachingTask!.Course!.Name}》成绩已通过学院审核，等待校级发布。",
+            "/grades", cancellationToken);
+        return NoContent();
     }
 
     [HttpPost("sheets/{id:guid}/return")]
@@ -458,7 +483,19 @@ public sealed class GradesController(
         sheet.Status = GradeSheetStatus.Returned;
         sheet.ReviewedAt = DateTime.UtcNow;
         sheet.ReviewComment = request.Comment.Trim();
-        return await SaveAsync(id, false, cancellationToken);
+        await db.SaveChangesAsync(cancellationToken);
+
+        var teacherUserIds = await db.TeachingTaskTeachers
+            .Where(x => x.TeachingTaskId == sheet.TeachingTaskId)
+            .Select(x => x.Teacher!.UserId)
+            .Where(id => id != null)
+            .Select(id => id!.Value)
+            .ToListAsync(cancellationToken);
+        await NotificationService.SendToUserIdsAsync(db, teacherUserIds,
+            "成绩被退回",
+            $"《{sheet.TeachingTask!.Course!.Name}》成绩被退回修改：{sheet.ReviewComment}",
+            "/grades", cancellationToken);
+        return NoContent();
     }
 
     [HttpPost("sheets/{id:guid}/publish")]
@@ -474,7 +511,23 @@ public sealed class GradesController(
             return ConflictProblem("只有审核通过的成绩单可以发布。");
         sheet.Status = GradeSheetStatus.Published;
         sheet.PublishedAt = DateTime.UtcNow;
-        return await SaveAsync(id, false, cancellationToken);
+        await db.SaveChangesAsync(cancellationToken);
+
+        // Notify enrolled students
+        var studentUserIds = await db.CourseEnrollments
+            .Where(x =>
+                x.CourseSelectionOffering!.TeachingTaskId == sheet.TeachingTaskId &&
+                x.Status == CourseEnrollmentStatus.Enrolled)
+            .Select(x => x.Student!.UserId)
+            .Where(id => id != null)
+            .Select(id => id!.Value)
+            .Distinct()
+            .ToListAsync(cancellationToken);
+        await NotificationService.SendToUserIdsAsync(db, studentUserIds,
+            "成绩已发布",
+            $"《{sheet.TeachingTask!.Course!.Name}》成绩已发布，请查看。",
+            "/grades", cancellationToken);
+        return NoContent();
     }
 
     [HttpGet("student/transcript")]