修正实验室选择

src/Jiaowu.Api/Controllers/ExperimentsController.cs

@@ -503,12 +503,32 @@ public sealed class ExperimentsController(
                 x.CourseId != first.CourseId))
             return ValidationProblem("批量设置仅支持同一学期、同一课程的教学任务。");
 
+        if (request.ArrangementMode == ExperimentArrangementMode.SelfScheduled &&
+            request.ProjectCount is < 1 or > 100)
+            return ValidationProblem("自行安排一次可生成 1 至 100 个实验项目。");
+
         var code = request.Code.Trim();
+        var names = NormalizeBatchProjectNames(request.Names);
+        var definitionCount = request.ArrangementMode == ExperimentArrangementMode.SelfScheduled
+            ? request.ProjectCount
+            : 1;
+        if (request.ArrangementMode == ExperimentArrangementMode.SelfScheduled &&
+            names is not null && names.Count != definitionCount)
+            return ValidationProblem($"已填写 {names.Count} 个项目名称，请将生成项目数设为相同数量。");
+        if (request.ArrangementMode == ExperimentArrangementMode.SelfScheduled &&
+            taskIds.Count * definitionCount > 1000)
+            return ValidationProblem("本次最多生成 1000 个自行安排实验项目，请缩小教学任务或项目数量。");
+
+        var projectCodes = Enumerable.Range(1, definitionCount)
+            .Select(index => ProjectCode(code, index, definitionCount))
+            .ToList();
+        if (projectCodes.Any(item => item.Length > 40))
+            return ValidationProblem("项目编码前缀过长，无法追加顺序号。");
         if (request.ArrangementMode == ExperimentArrangementMode.SelfScheduled)
         {
             var conflictingTaskNumbers = await db.ExperimentProjects.AsNoTracking()
                 .WhereIn(taskIds, x => x.TeachingTaskId)
-                .Where(x => x.Code == code)
+                .Where(x => projectCodes.Contains(x.Code))
                 .Select(x => x.TeachingTask!.TaskNumber)
                 .OrderBy(x => x)
                 .ToListAsync(cancellationToken);
@@ -565,7 +585,7 @@ public sealed class ExperimentsController(
                 return ConflictProblem("所选实验课中已存在相同实验项目编码和周次，不能重复生成。");
         }
 
-        var projects = new List<ExperimentProject>(tasks.Count);
+        var projects = new List<ExperimentProject>(tasks.Count * definitionCount);
         foreach (var task in tasks)
         {
             var item = request.ForTeachingTask(task.Id);
@@ -594,43 +614,57 @@ public sealed class ExperimentsController(
                         continue;
                     }
                 }
-                projects.Add(new ExperimentProject
+                for (var definitionIndex = 1; definitionIndex <= definitionCount; definitionIndex++)
                 {
-                    TeachingTaskId = task.Id,
-                    ScheduleEntryId = occurrence.Entry?.Id,
-                    ScheduleWeek = occurrence.Week,
-                    Code = code,
-                    Name = request.Name.Trim(),
-                    ArrangementMode = request.ArrangementMode,
-                    Description = Normalize(request.Description),
-                    Requirements = Normalize(request.Requirements),
-                    StartDate = request.StartDate,
-                    EndDate = request.EndDate,
-                    SelectionStartsAt = NormalizeSelectionTime(request.SelectionStartsAt),
-                    SelectionEndsAt = NormalizeSelectionTime(request.SelectionEndsAt)
-                });
+                    projects.Add(new ExperimentProject
+                    {
+                        TeachingTaskId = task.Id,
+                        ScheduleEntryId = occurrence.Entry?.Id,
+                        ScheduleWeek = occurrence.Week,
+                        Code = ProjectCode(code, definitionIndex, definitionCount),
+                        Name = request.Name.Trim(),
+                        ArrangementMode = request.ArrangementMode,
+                        Description = Normalize(request.Description),
+                        Requirements = Normalize(request.Requirements),
+                        StartDate = request.StartDate,
+                        EndDate = request.EndDate,
+                        SelectionStartsAt = NormalizeSelectionTime(request.SelectionStartsAt),
+                        SelectionEndsAt = NormalizeSelectionTime(request.SelectionEndsAt)
+                    });
+                }
             }
         }
 
-        var names = NormalizeBatchProjectNames(request.Names);
         if (request.GenerateSequentialNames)
         {
             if (names is not null)
                 return ValidationProblem("自动生成顺序号时无需填写逐行项目名称。");
-            var width = Math.Max(2, projects.Count.ToString().Length);
+            var width = Math.Max(2, (request.ArrangementMode == ExperimentArrangementMode.SelfScheduled
+                ? definitionCount
+                : projects.Count).ToString().Length);
             if (request.Name.Trim().Length + width + 1 > 120)
                 return ValidationProblem("项目名称前缀过长，无法追加顺序号。");
             for (var index = 0; index < projects.Count; index++)
-                projects[index].Name = $"{request.Name.Trim()} {(index + 1).ToString($"D{width}")}";
+            {
+                var number = request.ArrangementMode == ExperimentArrangementMode.SelfScheduled
+                    ? index % definitionCount + 1
+                    : index + 1;
+                projects[index].Name = $"{request.Name.Trim()} {number.ToString($"D{width}")}";
+            }
         }
         else if (names is not null)
         {
             if (names.Any(name => string.IsNullOrWhiteSpace(name) || name.Length > 120))
                 return ValidationProblem("每个实验项目名称均不能为空，且不能超过 120 个字符。");
-            if (names.Count != projects.Count)
+            var expectedNameCount = request.ArrangementMode == ExperimentArrangementMode.SelfScheduled
+                ? definitionCount
+                : projects.Count;
+            if (names.Count != expectedNameCount)
                 return ValidationProblem($"已填写 {names.Count} 个项目名称，但本次将生成 {projects.Count} 个实验项目；请确保每行对应一个项目。");
             for (var index = 0; index < projects.Count; index++)
-                projects[index].Name = names[index];
+                projects[index].Name = names[request.ArrangementMode == ExperimentArrangementMode.SelfScheduled
+                    ? index % definitionCount
+                    : index];
         }
 
         db.ExperimentProjects.AddRange(projects);
@@ -1370,9 +1404,7 @@ public sealed class ExperimentsController(
             .FirstOrDefaultAsync(x =>
                 x.Id == request.ClassroomId && x.IsEnabled,
                 cancellationToken);
-        if (classroom is null) return "实验教室不存在或已停用。";
-        if (!TeachingVenueNatureRules.SupportsExperiment(classroom.TeachingVenueNature))
-            return "所选场地未标注实验教学性质。";
+        if (classroom is null) return "实验场地不存在或已停用。";
         if (request.Capacity > classroom.Capacity)
             return $"场次容量不能超过教室容量 {classroom.Capacity} 人。";
         if (project.ArrangementMode ==
@@ -1737,6 +1769,11 @@ public sealed class ExperimentsController(
         return names.Select(name => name.Trim()).ToList();
     }
 
+    private static string ProjectCode(string prefix, int index, int count) =>
+        count == 1
+            ? prefix
+            : $"{prefix}-{index.ToString($"D{Math.Max(2, count.ToString().Length)}")}";
+
     private ActionResult ConflictProblem(string detail) =>
         Conflict(new ProblemDetails
         {
@@ -1776,7 +1813,8 @@ public sealed record ExperimentProjectBatchRequest(
     IReadOnlyList<string>? Names = null,
     bool GenerateSequentialNames = false,
     DateTime? SelectionStartsAt = null,
-    DateTime? SelectionEndsAt = null)
+    DateTime? SelectionEndsAt = null,
+    [Range(1, 100)] int ProjectCount = 1)
 {
     public ExperimentProjectRequest ForTeachingTask(Guid teachingTaskId) =>
         new(