评教系统

src/Jiaowu.Api/Controllers/AttendanceController.cs

@@ -13,7 +13,7 @@ using Microsoft.EntityFrameworkCore;
 namespace Jiaowu.Api.Controllers;
 
 [ApiController]
-[Authorize(Roles = AttendanceRoles)]
+[Authorize]
 [Route("api/attendance")]
 public sealed class AttendanceController(
     AppDbContext db,
@@ -27,6 +27,7 @@ public sealed class AttendanceController(
         SystemRoles.Teacher;
 
     [HttpGet("my-tasks")]
+    [Authorize(Roles = AttendanceRoles)]
     public async Task<ActionResult> GetMyTasks(
         Guid? academicTermId,
         CancellationToken cancellationToken)
@@ -57,6 +58,7 @@ public sealed class AttendanceController(
     }
 
     [HttpGet("sheets")]
+    [Authorize(Roles = AttendanceRoles)]
     public async Task<ActionResult> GetSheets(
         Guid teachingTaskId,
         CancellationToken cancellationToken)
@@ -88,6 +90,7 @@ public sealed class AttendanceController(
     }
 
     [HttpPost("sheets")]
+    [Authorize(Roles = AttendanceRoles)]
     public async Task<ActionResult> CreateSheet(
         AttendanceSheetRequest request,
         CancellationToken cancellationToken)
@@ -123,6 +126,7 @@ public sealed class AttendanceController(
     }
 
     [HttpGet("sheets/{id:guid}")]
+    [Authorize(Roles = AttendanceRoles)]
     public async Task<ActionResult> GetSheet(Guid id, CancellationToken cancellationToken)
     {
         var sheet = await db.AttendanceSheets.AsNoTracking()
@@ -184,6 +188,7 @@ public sealed class AttendanceController(
     }
 
     [HttpPut("sheets/{id:guid}/records")]
+    [Authorize(Roles = AttendanceRoles)]
     public async Task<ActionResult> UpdateRecords(
         Guid id,
         AttendanceRecordsRequest request,
@@ -193,6 +198,7 @@ public sealed class AttendanceController(
             .Include(x => x.Records)
             .Include(x => x.TeachingTask)
             .ThenInclude(x => x!.Teachers)
+            .ThenInclude(x => x.Teacher)
             .FirstOrDefaultAsync(x => x.Id == id, cancellationToken);
         if (sheet is null) return NotFound();
         if (!CanManageSheet(sheet)) return Forbid();
@@ -213,6 +219,7 @@ public sealed class AttendanceController(
     }
 
     [HttpPost("sheets/{id:guid}/import")]
+    [Authorize(Roles = AttendanceRoles)]
     public async Task<ActionResult> Import(
         Guid id,
         IFormFile file,
@@ -223,6 +230,7 @@ public sealed class AttendanceController(
             .ThenInclude(x => x.Student)
             .Include(x => x.TeachingTask)
             .ThenInclude(x => x!.Teachers)
+            .ThenInclude(x => x.Teacher)
             .FirstOrDefaultAsync(x => x.Id == id, cancellationToken);
         if (sheet is null) return NotFound();
         if (!CanManageSheet(sheet)) return Forbid();
@@ -262,6 +270,7 @@ public sealed class AttendanceController(
     }
 
     [HttpGet("sheets/{id:guid}/export.xlsx")]
+    [Authorize(Roles = AttendanceRoles)]
     public async Task<ActionResult> Export(Guid id, CancellationToken cancellationToken)
     {
         var sheetData = await db.AttendanceSheets.AsNoTracking()
@@ -308,11 +317,13 @@ public sealed class AttendanceController(
     }
 
     [HttpPost("sheets/{id:guid}/submit")]
+    [Authorize(Roles = AttendanceRoles)]
     public async Task<ActionResult> Submit(Guid id, CancellationToken cancellationToken)
     {
         var sheet = await db.AttendanceSheets
             .Include(x => x.TeachingTask)
             .ThenInclude(x => x!.Teachers)
+            .ThenInclude(x => x.Teacher)
             .FirstOrDefaultAsync(x => x.Id == id, cancellationToken);
         if (sheet is null) return NotFound();
         if (!CanManageSheet(sheet)) return Forbid();
@@ -496,6 +507,7 @@ public sealed class AttendanceController(
             .Include(r => r.AttendanceSheet)
             .ThenInclude(s => s!.TeachingTask)
             .ThenInclude(t => t!.Teachers)
+            .ThenInclude(x => x.Teacher)
             .FirstOrDefaultAsync(r =>
                 r.AttendanceSheetId == attendanceSheetId &&
                 r.StudentId == studentId,
@@ -538,11 +550,13 @@ public sealed class AttendanceController(
     }
 
     [HttpDelete("sheets/{id:guid}")]
+    [Authorize(Roles = AttendanceRoles)]
     public async Task<ActionResult> Delete(Guid id, CancellationToken cancellationToken)
     {
         var sheet = await db.AttendanceSheets
             .Include(x => x.TeachingTask)
             .ThenInclude(x => x!.Teachers)
+            .ThenInclude(x => x.Teacher)
             .FirstOrDefaultAsync(x => x.Id == id, cancellationToken);
         if (sheet is null) return NotFound();
         if (!CanManageSheet(sheet)) return Forbid();

src/Jiaowu.Api/Controllers/EvaluationsController.cs

@@ -0,0 +1,571 @@
+using System.ComponentModel.DataAnnotations;
+using Jiaowu.Api.Domain.Academic;
+using Jiaowu.Api.Domain.Identity;
+using Jiaowu.Api.Infrastructure.Auth;
+using Jiaowu.Api.Infrastructure.Persistence;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+
+namespace Jiaowu.Api.Controllers;
+
+[ApiController]
+[Authorize]
+[Route("api/evaluations")]
+public sealed class EvaluationsController(
+    AppDbContext db,
+    ICurrentUserDataScope currentUserDataScope) : ControllerBase
+{
+    private const string AdminRoles =
+        SystemRoles.SuperAdmin + "," +
+        SystemRoles.AcademicAdmin;
+
+    private const string StaffRoles =
+        SystemRoles.SuperAdmin + "," +
+        SystemRoles.AcademicAdmin + "," +
+        SystemRoles.CollegeAdmin + "," +
+        SystemRoles.Teacher + "," +
+        SystemRoles.Leader;
+
+    // ── Admin: Manage setups ────────────────────────────────────────
+
+    [HttpGet("setups")]
+    [Authorize(Roles = AdminRoles)]
+    public async Task<ActionResult> GetSetups(CancellationToken cancellationToken)
+    {
+        var setups = await db.EvaluationSetups.AsNoTracking()
+            .Include(x => x.Dimensions.OrderBy(d => d.SortOrder))
+            .Include(x => x.AcademicTerm)
+            .OrderByDescending(x => x.AcademicTerm!.StartDate)
+            .Select(x => new
+            {
+                x.Id, x.Name, x.Status,
+                x.AcademicTermId, TermName = x.AcademicTerm!.Name,
+                x.StartsAt, x.EndsAt,
+                Dimensions = x.Dimensions.Select(d => new
+                {
+                    d.Id, d.Name, d.MaxScore, d.SortOrder
+                }),
+                RecordCount = x.Records.Count,
+                x.CreatedAt
+            })
+            .ToListAsync(cancellationToken);
+        return Ok(setups);
+    }
+
+    [HttpPost("setups")]
+    [Authorize(Roles = AdminRoles)]
+    public async Task<ActionResult> CreateSetup(
+        EvaluationSetupRequest request,
+        CancellationToken cancellationToken)
+    {
+        if (request.Dimensions.Count == 0)
+            return ValidationProblem("至少需要一个评分维度。");
+        if (request.Dimensions.Sum(d => d.MaxScore) != 100)
+            return ValidationProblem("所有维度的满分之和必须等于 100。");
+
+        var termExists = await db.AcademicTerms.AnyAsync(
+            x => x.Id == request.AcademicTermId, cancellationToken);
+        if (!termExists) return ValidationProblem("所选学期不存在。");
+
+        var existing = await db.EvaluationSetups
+            .AnyAsync(x => x.AcademicTermId == request.AcademicTermId, cancellationToken);
+        if (existing) return ConflictProblem("该学期已有评教方案。");
+
+        var setup = new EvaluationSetup
+        {
+            AcademicTermId = request.AcademicTermId,
+            Name = request.Name.Trim(),
+            Status = EvaluationSetupStatus.Draft,
+            StartsAt = request.StartsAt,
+            EndsAt = request.EndsAt,
+            Dimensions = request.Dimensions.Select((d, i) => new EvaluationDimension
+            {
+                Name = d.Name.Trim(),
+                MaxScore = d.MaxScore,
+                SortOrder = i
+            }).ToList()
+        };
+        db.EvaluationSetups.Add(setup);
+        await db.SaveChangesAsync(cancellationToken);
+        return Created(string.Empty, new { setup.Id });
+    }
+
+    [HttpPut("setups/{id:guid}")]
+    [Authorize(Roles = AdminRoles)]
+    public async Task<ActionResult> UpdateSetup(
+        Guid id,
+        EvaluationSetupRequest request,
+        CancellationToken cancellationToken)
+    {
+        if (request.Dimensions.Count == 0)
+            return ValidationProblem("至少需要一个评分维度。");
+        if (request.Dimensions.Sum(d => d.MaxScore) != 100)
+            return ValidationProblem("所有维度的满分之和必须等于 100。");
+
+        var setup = await db.EvaluationSetups
+            .Include(x => x.Dimensions)
+            .FirstOrDefaultAsync(x => x.Id == id, cancellationToken);
+        if (setup is null) return NotFound();
+        if (setup.Status == EvaluationSetupStatus.Closed)
+            return ConflictProblem("已关闭的评教方案不能修改。");
+
+        setup.Name = request.Name.Trim();
+        setup.StartsAt = request.StartsAt;
+        setup.EndsAt = request.EndsAt;
+
+        db.EvaluationDimensions.RemoveRange(setup.Dimensions);
+        setup.Dimensions = request.Dimensions.Select((d, i) => new EvaluationDimension
+        {
+            EvaluationSetupId = setup.Id,
+            Name = d.Name.Trim(),
+            MaxScore = d.MaxScore,
+            SortOrder = i
+        }).ToList();
+
+        await db.SaveChangesAsync(cancellationToken);
+        return NoContent();
+    }
+
+    [HttpPost("setups/{id:guid}/open")]
+    [Authorize(Roles = AdminRoles)]
+    public async Task<ActionResult> OpenSetup(Guid id, CancellationToken cancellationToken)
+    {
+        var setup = await db.EvaluationSetups.FindAsync([id], cancellationToken);
+        if (setup is null) return NotFound();
+        if (setup.Status == EvaluationSetupStatus.Closed)
+            return ConflictProblem("已关闭的方案不能重新开启。");
+        setup.Status = EvaluationSetupStatus.Open;
+        await db.SaveChangesAsync(cancellationToken);
+        return NoContent();
+    }
+
+    [HttpPost("setups/{id:guid}/close")]
+    [Authorize(Roles = AdminRoles)]
+    public async Task<ActionResult> CloseSetup(Guid id, CancellationToken cancellationToken)
+    {
+        var setup = await db.EvaluationSetups.FindAsync([id], cancellationToken);
+        if (setup is null) return NotFound();
+        setup.Status = EvaluationSetupStatus.Closed;
+        await db.SaveChangesAsync(cancellationToken);
+        return NoContent();
+    }
+
+    [HttpDelete("setups/{id:guid}")]
+    [Authorize(Roles = AdminRoles)]
+    public async Task<ActionResult> DeleteSetup(Guid id, CancellationToken cancellationToken)
+    {
+        var setup = await db.EvaluationSetups
+            .Include(x => x.Records)
+            .FirstOrDefaultAsync(x => x.Id == id, cancellationToken);
+        if (setup is null) return NotFound();
+        if (setup.Records.Count > 0)
+            return ConflictProblem("已有评教记录的方案不能删除。");
+        db.EvaluationSetups.Remove(setup);
+        await db.SaveChangesAsync(cancellationToken);
+        return NoContent();
+    }
+
+    // ── Student: Evaluate courses ────────────────────────────────────
+
+    [HttpGet("my-tasks")]
+    [Authorize(Roles = SystemRoles.Student)]
+    public async Task<ActionResult> GetMyTasks(CancellationToken cancellationToken)
+    {
+        var userId = currentUserDataScope.Current.UserId;
+        var studentId = await db.Students
+            .Where(s => s.UserId == userId)
+            .Select(s => (Guid?)s.Id)
+            .FirstOrDefaultAsync(cancellationToken);
+        if (!studentId.HasValue)
+            return ConflictProblem("当前账号未关联学生档案。");
+
+        // Find open evaluation setups
+        var openSetups = await db.EvaluationSetups.AsNoTracking()
+            .Where(x => x.Status == EvaluationSetupStatus.Open)
+            .Select(x => new { x.Id, x.AcademicTermId })
+            .ToListAsync(cancellationToken);
+
+        if (openSetups.Count == 0)
+            return Ok(new { Setups = Array.Empty<object>(), Tasks = Array.Empty<object>() });
+
+        // Find enrolled teaching tasks for the student in those terms
+        var termIds = openSetups.Select(x => x.AcademicTermId).ToHashSet();
+        var enrollments = await db.CourseEnrollments.AsNoTracking()
+            .Where(e =>
+                e.Status == CourseEnrollmentStatus.Enrolled &&
+                e.StudentId == studentId.Value &&
+                termIds.Contains(e.CourseSelectionOffering!.TeachingTask!.AcademicTermId))
+            .Select(e => new
+            {
+                e.CourseSelectionOffering!.TeachingTaskId,
+                e.CourseSelectionOffering.TeachingTask!.AcademicTermId,
+                e.CourseSelectionOffering.TeachingTask.TaskNumber,
+                TaskName = e.CourseSelectionOffering.TeachingTask.Name,
+                CourseCode = e.CourseSelectionOffering.TeachingTask.Course!.Code,
+                CourseName = e.CourseSelectionOffering.TeachingTask.Course.Name,
+                TeacherNames = e.CourseSelectionOffering.TeachingTask.Teachers
+                    .OrderByDescending(t => t.IsPrimary)
+                    .Select(t => t.Teacher!.Name)
+            })
+            .ToListAsync(cancellationToken);
+
+        // Check which tasks have already been evaluated
+        var evaluatedIds = await db.EvaluationRecords.AsNoTracking()
+            .Where(r => r.StudentId == studentId.Value &&
+                        openSetups.Select(s => s.Id).Contains(r.EvaluationSetupId))
+            .Select(r => r.TeachingTaskId)
+            .ToHashSetAsync(cancellationToken);
+
+        var tasks = enrollments.Select(e => new
+        {
+            e.TeachingTaskId,
+            e.AcademicTermId,
+            e.TaskNumber,
+            e.TaskName,
+            e.CourseCode,
+            e.CourseName,
+            e.TeacherNames,
+            SetupId = openSetups.First(s => s.AcademicTermId == e.AcademicTermId).Id,
+            IsEvaluated = evaluatedIds.Contains(e.TeachingTaskId)
+        }).ToList();
+
+        return Ok(new { Tasks = tasks });
+    }
+
+    [HttpGet("tasks/{teachingTaskId:guid}/form")]
+    [Authorize(Roles = SystemRoles.Student)]
+    public async Task<ActionResult> GetEvaluationForm(
+        Guid teachingTaskId,
+        CancellationToken cancellationToken)
+    {
+        var userId = currentUserDataScope.Current.UserId;
+        var studentId = await db.Students
+            .Where(s => s.UserId == userId)
+            .Select(s => (Guid?)s.Id)
+            .FirstOrDefaultAsync(cancellationToken);
+        if (!studentId.HasValue)
+            return ConflictProblem("当前账号未关联学生档案。");
+
+        var task = await db.TeachingTasks.AsNoTracking()
+            .Where(x => x.Id == teachingTaskId)
+            .Select(x => new
+            {
+                x.Id, x.TaskNumber, x.Name,
+                x.AcademicTermId,
+                CourseCode = x.Course!.Code,
+                CourseName = x.Course.Name,
+                TeacherNames = x.Teachers
+                    .OrderByDescending(t => t.IsPrimary)
+                    .Select(t => t.Teacher!.Name)
+            })
+            .FirstOrDefaultAsync(cancellationToken);
+        if (task is null) return NotFound();
+
+        var setup = await db.EvaluationSetups.AsNoTracking()
+            .Include(x => x.Dimensions.OrderBy(d => d.SortOrder))
+            .Where(x => x.AcademicTermId == task.AcademicTermId &&
+                        x.Status == EvaluationSetupStatus.Open)
+            .FirstOrDefaultAsync(cancellationToken);
+        if (setup is null) return ConflictProblem("当前学期没有开放的评教活动。");
+
+        // Check if already evaluated
+        var exists = await db.EvaluationRecords.AnyAsync(
+            x => x.EvaluationSetupId == setup.Id &&
+                 x.StudentId == studentId.Value &&
+                 x.TeachingTaskId == teachingTaskId,
+            cancellationToken);
+        if (exists) return ConflictProblem("您已经对该课程进行过评教。");
+
+        return Ok(new
+        {
+            SetupId = setup.Id,
+            setup.Name,
+            Dimensions = setup.Dimensions.Select(d => new
+            {
+                d.Id, d.Name, d.MaxScore, d.SortOrder
+            }),
+            Task = task
+        });
+    }
+
+    [HttpPost("tasks/{teachingTaskId:guid}/submit")]
+    [Authorize(Roles = SystemRoles.Student)]
+    public async Task<ActionResult> SubmitEvaluation(
+        Guid teachingTaskId,
+        SubmitEvaluationRequest request,
+        CancellationToken cancellationToken)
+    {
+        var userId = currentUserDataScope.Current.UserId;
+        var studentId = await db.Students
+            .Where(s => s.UserId == userId)
+            .Select(s => (Guid?)s.Id)
+            .FirstOrDefaultAsync(cancellationToken);
+        if (!studentId.HasValue)
+            return ConflictProblem("当前账号未关联学生档案。");
+
+        var setup = await db.EvaluationSetups
+            .Include(x => x.Dimensions)
+            .FirstOrDefaultAsync(x => x.Id == request.SetupId, cancellationToken);
+        if (setup is null) return NotFound("评教方案不存在。");
+        if (setup.Status != EvaluationSetupStatus.Open)
+            return ConflictProblem("该评教活动已结束。");
+
+        // Validate against dimensions
+        var dimMap = setup.Dimensions.ToDictionary(d => d.Id);
+        if (request.Scores.Count != dimMap.Count)
+            return ValidationProblem("评分维度数量不匹配。");
+
+        var totalScore = 0;
+        foreach (var score in request.Scores)
+        {
+            if (!dimMap.TryGetValue(score.DimensionId, out var dim))
+                return ValidationProblem($"无效的评分维度。");
+            if (score.Score < 0 || score.Score > dim.MaxScore)
+                return ValidationProblem($"「{dim.Name}」评分超出范围（0-{dim.MaxScore}）。");
+            totalScore += score.Score;
+        }
+
+        // Check duplicate
+        var exists = await db.EvaluationRecords.AnyAsync(
+            x => x.EvaluationSetupId == setup.Id &&
+                 x.StudentId == studentId.Value &&
+                 x.TeachingTaskId == teachingTaskId,
+            cancellationToken);
+        if (exists) return ConflictProblem("您已经对该课程进行过评教。");
+
+        var record = new EvaluationRecord
+        {
+            EvaluationSetupId = setup.Id,
+            StudentId = studentId.Value,
+            TeachingTaskId = teachingTaskId,
+            SubmittedAt = DateTime.UtcNow,
+            Scores = request.Scores.Select(s => new EvaluationScore
+            {
+                EvaluationDimensionId = s.DimensionId,
+                Score = s.Score
+            }).ToList()
+        };
+        db.EvaluationRecords.Add(record);
+        await db.SaveChangesAsync(cancellationToken);
+
+        return Ok(new { record.Id, TotalScore = totalScore });
+    }
+
+    // ── Teacher / Staff: View results ─────────────────────────────────
+
+    [HttpGet("my-results")]
+    [Authorize(Roles = SystemRoles.Teacher)]
+    public async Task<ActionResult> GetMyResults(CancellationToken cancellationToken)
+    {
+        var userId = currentUserDataScope.Current.UserId;
+        var teacherId = await db.Teachers
+            .Where(t => t.UserId == userId)
+            .Select(t => (Guid?)t.Id)
+            .FirstOrDefaultAsync(cancellationToken);
+        if (!teacherId.HasValue)
+            return ConflictProblem("当前账号未关联教师档案。");
+
+        var taskIds = await db.TeachingTaskTeachers
+            .Where(x => x.TeacherId == teacherId.Value)
+            .Select(x => x.TeachingTaskId)
+            .ToListAsync(cancellationToken);
+
+        if (taskIds.Count == 0)
+            return Ok(new { Tasks = Array.Empty<object>() });
+
+        var setups = await db.EvaluationSetups.AsNoTracking()
+            .Where(x => x.Status == EvaluationSetupStatus.Closed)
+            .Include(x => x.Dimensions.OrderBy(d => d.SortOrder))
+            .OrderByDescending(x => x.AcademicTerm!.StartDate)
+            .ToListAsync(cancellationToken);
+
+        var result = new List<object>();
+        foreach (var setup in setups)
+        {
+            var setupTaskIds = await db.EvaluationRecords.AsNoTracking()
+                .Where(r => r.EvaluationSetupId == setup.Id &&
+                            taskIds.Contains(r.TeachingTaskId))
+                .Select(r => r.TeachingTaskId)
+                .Distinct()
+                .ToListAsync(cancellationToken);
+
+            foreach (var taskId in setupTaskIds)
+            {
+                var task = await db.TeachingTasks.AsNoTracking()
+                    .Where(x => x.Id == taskId)
+                    .Select(x => new
+                    {
+                        x.Id, x.TaskNumber, x.Name,
+                        x.AcademicTermId,
+                        CourseCode = x.Course!.Code,
+                        CourseName = x.Course.Name
+                    })
+                    .FirstOrDefaultAsync(cancellationToken);
+                if (task is null) continue;
+
+                var records = await db.EvaluationRecords.AsNoTracking()
+                    .Where(r => r.EvaluationSetupId == setup.Id &&
+                                r.TeachingTaskId == taskId)
+                    .Include(r => r.Scores)
+                    .ToListAsync(cancellationToken);
+
+                if (records.Count == 0) continue;
+
+                var dimensionResults = setup.Dimensions.Select(dim =>
+                {
+                    var scores = records
+                        .SelectMany(r => r.Scores)
+                        .Where(s => s.EvaluationDimensionId == dim.Id)
+                        .Select(s => (double)s.Score)
+                        .ToList();
+                    return new
+                    {
+                        DimensionId = dim.Id,
+                        DimensionName = dim.Name,
+                        MaxScore = dim.MaxScore,
+                        AverageScore = scores.Count > 0
+                            ? Math.Round(scores.Average(), 1) : 0,
+                        TotalScore = scores.Sum(),
+                        Count = scores.Count
+                    };
+                }).ToList();
+
+                var totalAvg = records
+                    .Select(r => (double)r.Scores.Sum(s => s.Score))
+                    .ToList();
+
+                result.Add(new
+                {
+                    SetupId = setup.Id,
+                    setup.Name,
+                    Task = task,
+                    StudentCount = records.Count,
+                    AverageTotal = totalAvg.Count > 0
+                        ? Math.Round(totalAvg.Average(), 1) : 0,
+                    Dimensions = dimensionResults
+                });
+            }
+        }
+
+        return Ok(new { Tasks = result });
+    }
+
+    [HttpGet("setups/{id:guid}/results")]
+    [Authorize(Roles = StaffRoles)]
+    public async Task<ActionResult> GetSetupResults(
+        Guid id,
+        CancellationToken cancellationToken)
+    {
+        var setup = await db.EvaluationSetups.AsNoTracking()
+            .Include(x => x.Dimensions.OrderBy(d => d.SortOrder))
+            .Include(x => x.AcademicTerm)
+            .FirstOrDefaultAsync(x => x.Id == id, cancellationToken);
+        if (setup is null) return NotFound();
+
+        var records = await db.EvaluationRecords.AsNoTracking()
+            .Where(r => r.EvaluationSetupId == id)
+            .Include(r => r.Scores)
+            .Include(r => r.TeachingTask)
+            .ThenInclude(t => t!.Course)
+            .ThenInclude(c => c!.College)
+            .ToListAsync(cancellationToken);
+
+        // By teaching task
+        var byTask = records
+            .GroupBy(r => new
+            {
+                r.TeachingTaskId,
+                r.TeachingTask!.TaskNumber,
+                TaskName = r.TeachingTask.Name,
+                CourseName = r.TeachingTask.Course!.Name,
+                CollegeName = r.TeachingTask.Course.College!.Name,
+                TeacherNames = string.Join("、",
+                    r.TeachingTask.Teachers
+                        .OrderByDescending(t => t.IsPrimary)
+                        .Select(t => t.Teacher!.Name))
+            })
+            .Select(g =>
+            {
+                var dimAvgs = setup.Dimensions.Select(dim =>
+                {
+                    var scores = g
+                        .SelectMany(r => r.Scores)
+                        .Where(s => s.EvaluationDimensionId == dim.Id)
+                        .Select(s => (double)s.Score)
+                        .ToList();
+                    return new
+                    {
+                        DimensionName = dim.Name,
+                        AverageScore = scores.Count > 0
+                            ? Math.Round(scores.Average(), 1) : 0,
+                        Count = scores.Count
+                    };
+                }).ToList();
+
+                var totals = g.Select(r => (double)r.Scores.Sum(s => s.Score)).ToList();
+                return new
+                {
+                    g.Key.TeachingTaskId,
+                    g.Key.TaskNumber,
+                    g.Key.TaskName,
+                    g.Key.CourseName,
+                    g.Key.CollegeName,
+                    g.Key.TeacherNames,
+                    StudentCount = g.Count(),
+                    AverageTotal = totals.Count > 0
+                        ? Math.Round(totals.Average(), 1) : 0,
+                    Dimensions = dimAvgs
+                };
+            })
+            .OrderByDescending(x => x.AverageTotal)
+            .ToList();
+
+        return Ok(new
+        {
+            Setup = new
+            {
+                setup.Id, setup.Name, setup.Status,
+                TermName = setup.AcademicTerm!.Name,
+                setup.StartsAt, setup.EndsAt,
+                Dimensions = setup.Dimensions.Select(d => new
+                {
+                    d.Id, d.Name, d.MaxScore, d.SortOrder
+                })
+            },
+            ByTask = byTask,
+            TotalRecords = records.Count,
+            DistinctTasks = byTask.Count,
+            DistinctStudents = records.Select(r => r.StudentId).Distinct().Count()
+        });
+    }
+
+    // ── Helpers ──────────────────────────────────────────────────────
+
+    private ActionResult ConflictProblem(string detail) =>
+        Conflict(new ProblemDetails
+        {
+            Title = "无法完成评教操作",
+            Detail = detail,
+            Status = StatusCodes.Status409Conflict
+        });
+}
+
+public sealed record EvaluationSetupRequest(
+    Guid AcademicTermId,
+    [MaxLength(120)] string Name,
+    DateTime? StartsAt,
+    DateTime? EndsAt,
+    IReadOnlyCollection<EvaluationDimensionRequest> Dimensions);
+
+public sealed record EvaluationDimensionRequest(
+    [MaxLength(60)] string Name,
+    int MaxScore);
+
+public sealed record SubmitEvaluationRequest(
+    Guid SetupId,
+    IReadOnlyCollection<EvaluationScoreRequest> Scores);
+
+public sealed record EvaluationScoreRequest(
+    Guid DimensionId,
+    int Score);

src/Jiaowu.Api/Domain/Academic/EvaluationEntities.cs

@@ -0,0 +1,84 @@
+using Jiaowu.Api.Domain.Common;
+
+namespace Jiaowu.Api.Domain.Academic;
+
+/// <summary>
+/// 评教方案 — 每个学期可以有一个评教方案，包含多个评分维度。
+/// </summary>
+public sealed class EvaluationSetup : EntityBase
+{
+    public Guid AcademicTermId { get; set; }
+    public AcademicTerm AcademicTerm { get; set; } = null!;
+
+    /// <summary>方案名称，如"2026年秋季学期学生评教"</summary>
+    public string Name { get; set; } = string.Empty;
+
+    /// <summary>状态：Draft / Open / Closed</summary>
+    public EvaluationSetupStatus Status { get; set; } = EvaluationSetupStatus.Draft;
+
+    public DateTime? StartsAt { get; set; }
+    public DateTime? EndsAt { get; set; }
+
+    public ICollection<EvaluationDimension> Dimensions { get; set; } = new List<EvaluationDimension>();
+    public ICollection<EvaluationRecord> Records { get; set; } = new List<EvaluationRecord>();
+}
+
+public enum EvaluationSetupStatus
+{
+    Draft = 0,
+    Open = 1,
+    Closed = 2
+}
+
+/// <summary>
+/// 评分维度 — 例如"教学内容 30分"、"教学方法 30分"等。
+/// </summary>
+public sealed class EvaluationDimension : EntityBase
+{
+    public Guid EvaluationSetupId { get; set; }
+    public EvaluationSetup EvaluationSetup { get; set; } = null!;
+
+    /// <summary>维度名称</summary>
+    public string Name { get; set; } = string.Empty;
+
+    /// <summary>该维度满分</summary>
+    public int MaxScore { get; set; }
+
+    /// <summary>排序</summary>
+    public int SortOrder { get; set; }
+
+    public ICollection<EvaluationScore> Scores { get; set; } = new List<EvaluationScore>();
+}
+
+/// <summary>
+/// 学生评教记录 — 一个学生对一个教学班的评价。
+/// </summary>
+public sealed class EvaluationRecord : EntityBase
+{
+    public Guid EvaluationSetupId { get; set; }
+    public EvaluationSetup EvaluationSetup { get; set; } = null!;
+
+    public Guid StudentId { get; set; }
+    public Student Student { get; set; } = null!;
+
+    public Guid TeachingTaskId { get; set; }
+    public TeachingTask TeachingTask { get; set; } = null!;
+
+    public DateTime? SubmittedAt { get; set; }
+
+    public ICollection<EvaluationScore> Scores { get; set; } = new List<EvaluationScore>();
+}
+
+/// <summary>
+/// 评分明细 — 每个维度一条记录。
+/// </summary>
+public sealed class EvaluationScore
+{
+    public Guid EvaluationRecordId { get; set; }
+    public EvaluationRecord EvaluationRecord { get; set; } = null!;
+
+    public Guid EvaluationDimensionId { get; set; }
+    public EvaluationDimension EvaluationDimension { get; set; } = null!;
+
+    public int Score { get; set; }
+}