src/Jiaowu.Api/Controllers/BaseDataController.cs

@@ -557,7 +557,7 @@ public sealed class BaseDataController(AppDbContext db, IAppCache cache) : Contr
                 .Select(x => new ClassroomListItem(
                     x.Id, x.Code, x.Name, x.BuildingId, x.Building!.CampusId,
                     x.Building.Name, x.Building.Campus!.Name, x.Capacity,
-                    x.RoomType, x.TeachingVenueNature, x.Equipment,
+                    x.Floor, x.RoomType, x.TeachingVenueNature, x.Equipment,
                     x.IsEnabled, x.SortOrder))
                 .ToListAsync(cancellationToken);
             return Ok(new PagedResult<ClassroomListItem>(
@@ -578,6 +578,7 @@ public sealed class BaseDataController(AppDbContext db, IAppCache cache) : Contr
                     x.Building.Name,
                     x.Building.Campus!.Name,
                     x.Capacity,
+                    x.Floor,
                     x.RoomType,
                     x.TeachingVenueNature,
                     x.Equipment,
@@ -645,6 +646,7 @@ public sealed class BaseDataController(AppDbContext db, IAppCache cache) : Contr
             Name = request.Name.Trim(),
             BuildingId = request.BuildingId,
             Capacity = request.Capacity,
+            Floor = request.Floor,
             RoomType = request.RoomType.Trim(),
             TeachingVenueNature = request.TeachingVenueNature == 0
                 ? TeachingVenueNature.GeneralClassroom
@@ -668,6 +670,7 @@ public sealed class BaseDataController(AppDbContext db, IAppCache cache) : Contr
         ApplyCatalog(entity, request);
         entity.BuildingId = request.BuildingId;
         entity.Capacity = request.Capacity;
+        entity.Floor = request.Floor;
         entity.RoomType = request.RoomType.Trim();
         entity.TeachingVenueNature = request.TeachingVenueNature == 0
             ? TeachingVenueNature.GeneralClassroom
@@ -822,6 +825,7 @@ public sealed record ClassroomRequest(
     string Code, string Name, int SortOrder, bool IsEnabled,
     Guid BuildingId,
     [Range(1, 1000)] int Capacity,
+    [Range(1, 99)] int Floor,
     [Required, MaxLength(40)] string RoomType,
     TeachingVenueNature TeachingVenueNature,
     [MaxLength(300)] string? Equipment)
@@ -879,6 +883,7 @@ public sealed record ClassroomListItem(
     string BuildingName,
     string CampusName,
     int Capacity,
+    int Floor,
     string RoomType,
     TeachingVenueNature TeachingVenueNature,
     string? Equipment,

src/Jiaowu.Api/Controllers/ExperimentsController.cs

@@ -1308,6 +1308,104 @@ public sealed class ExperimentsController(
             IsolationLevel.Serializable);
     }
 
+    [HttpPost("sessions/{id:guid}/proxy-bookings/batch")]
+    [Authorize(Roles = Managers)]
+    public async Task<ActionResult> CreateProxyBookings(
+        Guid id,
+        ProxyExperimentBookingBatchRequest request,
+        CancellationToken cancellationToken)
+    {
+        var studentIds = request.StudentIds.Distinct().ToArray();
+        if (studentIds.Length == 0)
+            return ValidationProblem("请至少选择一名学生。");
+        if (studentIds.Length > 100)
+            return ValidationProblem("单次最多可代选 100 名学生。");
+
+        return await db.ExecuteInRetriableTransactionAsync<ActionResult>(
+            async transaction =>
+            {
+                db.ChangeTracker.Clear();
+                var session = await LoadManagedSessionAsync(id, cancellationToken);
+                if (session is null) return NotFound();
+                if (!CanManageSession(session)) return Forbid();
+                if (session.Status != ExperimentSessionStatus.Scheduled ||
+                    session.ExperimentProject!.Status != ExperimentProjectStatus.Published ||
+                    session.ExperimentProject.ArrangementMode != ExperimentArrangementMode.SelfScheduled)
+                    return ConflictProblem("只能为已发布的自行安排实验场次代选学生。");
+
+                var students = await db.Students
+                    .WhereIn(studentIds, x => x.Id)
+                    .OrderBy(x => x.StudentNumber)
+                    .ToListAsync(cancellationToken);
+                if (students.Count != studentIds.Length)
+                    return ValidationProblem("存在无效的学生档案。");
+                var inactive = students.FirstOrDefault(x => x.Status != StudentStatus.Active);
+                if (inactive is not null)
+                    return ConflictProblem($"学生 {inactive.StudentNumber} {inactive.Name} 当前不是在籍状态。");
+
+                var roster = await TeachingTaskRosterQuery.LoadForTasksAsync(
+                    db, [session.ExperimentProject.TeachingTaskId], cancellationToken);
+                var eligibleStudentIds = roster.Select(x => x.StudentId).ToHashSet();
+                var outOfRoster = students.FirstOrDefault(x => !eligibleStudentIds.Contains(x.Id));
+                if (outOfRoster is not null)
+                    return ConflictProblem($"学生 {outOfRoster.StudentNumber} {outOfRoster.Name} 不在本实验项目的教学任务名单内。");
+
+                var existingBookings = await db.ExperimentBookings
+                    .Where(x => x.ExperimentProjectId == session.ExperimentProjectId)
+                    .WhereIn(studentIds, x => x.StudentId)
+                    .ToListAsync(cancellationToken);
+                var booked = existingBookings.FirstOrDefault(x =>
+                    x.Status == ExperimentBookingStatus.Booked);
+                if (booked is not null)
+                {
+                    var student = students.First(x => x.Id == booked.StudentId);
+                    return ConflictProblem(booked.ExperimentSessionId == session.Id
+                        ? $"学生 {student.StudentNumber} {student.Name} 已预约本实验场次。"
+                        : $"学生 {student.StudentNumber} {student.Name} 已预约本实验项目的其他场次。");
+                }
+
+                foreach (var student in students)
+                {
+                    var scheduleProblem = await StudentConflictAsync(student.Id, session, cancellationToken);
+                    if (scheduleProblem is not null)
+                        return ConflictProblem($"学生 {student.StudentNumber} {student.Name}：{scheduleProblem}");
+                }
+
+                var reservedCount = await db.ExperimentBookings.CountAsync(x =>
+                    x.ExperimentSessionId == session.Id && x.Status == ExperimentBookingStatus.Booked,
+                    cancellationToken);
+                if (reservedCount + students.Count > session.Capacity)
+                    return ConflictProblem($"该实验场次仅剩 {Math.Max(0, session.Capacity - reservedCount)} 个名额，无法完成本次代选。");
+
+                foreach (var student in students)
+                {
+                    var existing = existingBookings.FirstOrDefault(x => x.StudentId == student.Id);
+                    if (existing is null)
+                    {
+                        db.ExperimentBookings.Add(new ExperimentBooking
+                        {
+                            ExperimentProjectId = session.ExperimentProjectId,
+                            ExperimentSessionId = session.Id,
+                            StudentId = student.Id
+                        });
+                    }
+                    else
+                    {
+                        existing.ExperimentSessionId = session.Id;
+                        existing.Status = ExperimentBookingStatus.Booked;
+                        existing.BookedAt = DateTime.UtcNow;
+                        existing.CancelledAt = null;
+                    }
+                }
+                session.ReservedCount = reservedCount + students.Count;
+                await db.SaveChangesAsync(cancellationToken);
+                await transaction.CommitAsync(cancellationToken);
+                return Ok(new { BookedCount = students.Count });
+            },
+            cancellationToken,
+            IsolationLevel.Serializable);
+    }
+
     [HttpPost("sessions/{id:guid}/book")]
     [Authorize(Roles = SystemRoles.Student)]
     public async Task<ActionResult> Book(
@@ -1967,6 +2065,9 @@ public sealed record ExperimentSessionRequest(
 
 public sealed record ProxyExperimentBookingRequest(Guid StudentId);
 
+public sealed record ProxyExperimentBookingBatchRequest(
+    [Required, MinLength(1)] IReadOnlyCollection<Guid> StudentIds);
+
 public sealed record ExperimentSessionBatchRequest(
     [Required] IReadOnlyList<ExperimentSessionBatchItem> Items);
 

src/Jiaowu.Api/Controllers/ScheduleSettingsController.cs

@@ -14,6 +14,50 @@ namespace Jiaowu.Api.Controllers;
 [Route("api/schedules")]
 public sealed class ScheduleSettingsController(AppDbContext db, IAppCache cache) : ControllerBase
 {
+    [HttpGet("optimization-settings")]
+    public async Task<ActionResult> GetOptimizationSettings(
+        Guid academicTermId,
+        CancellationToken cancellationToken)
+    {
+        var settings = await db.ScheduleOptimizationSettings.AsNoTracking()
+            .FirstOrDefaultAsync(x => x.AcademicTermId == academicTermId, cancellationToken)
+            ?? ScheduleOptimizationSettings.CreateDefault(academicTermId);
+        return Ok(ToOptimizationSettingsResponse(settings));
+    }
+
+    [HttpPut("optimization-settings/{academicTermId:guid}")]
+    public async Task<ActionResult> SaveOptimizationSettings(
+        Guid academicTermId,
+        ScheduleOptimizationSettingsRequest request,
+        CancellationToken cancellationToken)
+    {
+        if (!await db.AcademicTerms.AnyAsync(
+                x => x.Id == academicTermId && x.IsEnabled,
+                cancellationToken))
+            return ValidationProblem("学期不存在或已停用。");
+
+        var settings = await db.ScheduleOptimizationSettings
+            .FirstOrDefaultAsync(x => x.AcademicTermId == academicTermId, cancellationToken);
+        if (settings is null)
+        {
+            settings = ScheduleOptimizationSettings.CreateDefault(academicTermId);
+            db.ScheduleOptimizationSettings.Add(settings);
+        }
+        settings.TeacherSameDayWeight = request.TeacherSameDayWeight;
+        settings.ClassSameDayWeight = request.ClassSameDayWeight;
+        settings.ClassGapWeight = request.ClassGapWeight;
+        settings.ConsecutiveClassWeight = request.ConsecutiveClassWeight;
+        settings.EarlyPeriodPenalty = request.EarlyPeriodPenalty;
+        settings.LatePeriodPenalty = request.LatePeriodPenalty;
+        settings.RoomCapacityWasteWeight = request.RoomCapacityWasteWeight;
+        settings.CoursePreferenceWeight = request.CoursePreferenceWeight;
+        settings.GeneticPopulationSize = request.GeneticPopulationSize;
+        settings.GeneticGenerationCount = request.GeneticGenerationCount;
+        settings.GeneticMutationRatePercent = request.GeneticMutationRatePercent;
+        await db.SaveChangesAsync(cancellationToken);
+        return Ok(ToOptimizationSettingsResponse(settings));
+    }
+
     [HttpGet("time-slots")]
     public async Task<ActionResult> GetTimeSlots(
         Guid academicTermId,
@@ -32,6 +76,21 @@ public sealed class ScheduleSettingsController(AppDbContext db, IAppCache cache)
             })
             .ToListAsync(cancellationToken));
 
+    private static object ToOptimizationSettingsResponse(ScheduleOptimizationSettings settings) => new
+    {
+        settings.TeacherSameDayWeight,
+        settings.ClassSameDayWeight,
+        settings.ClassGapWeight,
+        settings.ConsecutiveClassWeight,
+        settings.EarlyPeriodPenalty,
+        settings.LatePeriodPenalty,
+        settings.RoomCapacityWasteWeight,
+        settings.CoursePreferenceWeight,
+        settings.GeneticPopulationSize,
+        settings.GeneticGenerationCount,
+        settings.GeneticMutationRatePercent
+    };
+
     [HttpPut("time-slots/{academicTermId:guid}")]
     public async Task<ActionResult> ReplaceTimeSlots(
         Guid academicTermId,
@@ -138,6 +197,9 @@ public sealed class ScheduleSettingsController(AppDbContext db, IAppCache cache)
                 AllowedDayOfWeeks = ParseDays(constraint?.AllowedDayOfWeeks),
                 constraint?.EarliestPeriod,
                 constraint?.LatestPeriod,
+                PreferredDayOfWeeks = ParseDays(constraint?.PreferredDayOfWeeks),
+                constraint?.PreferredEarliestPeriod,
+                constraint?.PreferredLatestPeriod,
                 AllowedClassroomIds = constraint?.AllowedClassrooms
                     .Select(x => x.ClassroomId) ?? [],
                 AllowedExperimentClassroomIds = constraint?.AllowedExperimentClassrooms
@@ -159,6 +221,12 @@ public sealed class ScheduleSettingsController(AppDbContext db, IAppCache cache)
             request.LatestPeriod.HasValue &&
             request.EarliestPeriod > request.LatestPeriod)
             return ValidationProblem("最早节次不能晚于最晚节次。");
+        if (request.PreferredDayOfWeeks?.Any(day => day is < 1 or > 7) == true)
+            return ValidationProblem("偏好上课日必须位于星期一至星期日。");
+        if (request.PreferredEarliestPeriod.HasValue &&
+            request.PreferredLatestPeriod.HasValue &&
+            request.PreferredEarliestPeriod > request.PreferredLatestPeriod)
+            return ValidationProblem("偏好最早节次不能晚于偏好最晚节次。");
         if (!Enum.IsDefined(request.SchedulingMode))
             return ValidationProblem("授课方式无效。");
         var task = await db.TeachingTasks
@@ -271,6 +339,11 @@ public sealed class ScheduleSettingsController(AppDbContext db, IAppCache cache)
             : string.Join(',', request.AllowedDayOfWeeks.Distinct().Order());
         constraint.EarliestPeriod = request.EarliestPeriod;
         constraint.LatestPeriod = request.LatestPeriod;
+        constraint.PreferredDayOfWeeks = request.PreferredDayOfWeeks?.Count > 0
+            ? string.Join(',', request.PreferredDayOfWeeks.Distinct().Order())
+            : null;
+        constraint.PreferredEarliestPeriod = request.PreferredEarliestPeriod;
+        constraint.PreferredLatestPeriod = request.PreferredLatestPeriod;
         constraint.AllowedExperimentVenueNatures = request.AllowedExperimentVenueNatures;
         db.TeachingTaskAllowedClassrooms.RemoveRange(constraint.AllowedClassrooms);
         db.TeachingTaskAllowedExperimentClassrooms.RemoveRange(constraint.AllowedExperimentClassrooms);
@@ -515,6 +588,9 @@ public sealed class ScheduleSettingsController(AppDbContext db, IAppCache cache)
         constraint.AllowedDayOfWeeks = null;
         constraint.EarliestPeriod = null;
         constraint.LatestPeriod = null;
+        constraint.PreferredDayOfWeeks = null;
+        constraint.PreferredEarliestPeriod = null;
+        constraint.PreferredLatestPeriod = null;
         db.TeachingTaskAllowedClassrooms.RemoveRange(constraint.AllowedClassrooms);
         db.TeachingTaskAllowedExperimentClassrooms.RemoveRange(constraint.AllowedExperimentClassrooms);
         constraint.AllowedClassrooms = [];
@@ -544,6 +620,19 @@ public sealed record ScheduleTimeSlotRequest(
     TimeOnly EndsAt,
     bool IsEnabled);
 
+public sealed record ScheduleOptimizationSettingsRequest(
+    [Range(0, 10_000)] int TeacherSameDayWeight,
+    [Range(0, 10_000)] int ClassSameDayWeight,
+    [Range(0, 10_000)] int ClassGapWeight,
+    [Range(0, 10_000)] int ConsecutiveClassWeight,
+    [Range(0, 10_000)] int EarlyPeriodPenalty,
+    [Range(0, 10_000)] int LatePeriodPenalty,
+    [Range(0, 10_000)] int RoomCapacityWasteWeight,
+    [Range(0, 10_000)] int CoursePreferenceWeight = 180,
+    [Range(12, 64)] int GeneticPopulationSize = 32,
+    [Range(12, 160)] int GeneticGenerationCount = 80,
+    [Range(1, 50)] int GeneticMutationRatePercent = 12);
+
 public sealed record TeachingTaskScheduleConstraintRequest(
     TeachingTaskSchedulingMode SchedulingMode,
     bool RequiresClassroom,
@@ -556,7 +645,10 @@ public sealed record TeachingTaskScheduleConstraintRequest(
     TeachingVenueNature AllowedExperimentVenueNatures = 0,
     IReadOnlyList<Guid>? AllowedExperimentClassroomIds = null,
     Guid? ExperimentRequiredCampusId = null,
-    Guid? ExperimentRequiredBuildingId = null);
+    Guid? ExperimentRequiredBuildingId = null,
+    IReadOnlyList<int>? PreferredDayOfWeeks = null,
+    [Range(1, 30)] int? PreferredEarliestPeriod = null,
+    [Range(1, 30)] int? PreferredLatestPeriod = null);
 
 public sealed record TeachingTaskScheduleConstraintBatchRequest(
     Guid AcademicTermId,