217 lines
12 KiB
C#
217 lines
12 KiB
C#
using System.ComponentModel.DataAnnotations;
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using Jiaowu.Api.Domain.Academic;
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using Jiaowu.Api.Domain.Identity;
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using Jiaowu.Api.Infrastructure.Auth;
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using Jiaowu.Api.Infrastructure.Persistence;
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using Microsoft.AspNetCore.Authorization;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.EntityFrameworkCore;
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namespace Jiaowu.Api.Controllers;
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[ApiController]
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[Authorize]
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[Route("api/warnings")]
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public sealed class WarningsController(AppDbContext db, ICurrentUserDataScope scope) : ControllerBase
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{
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private const string Managers = SystemRoles.SuperAdmin + "," + SystemRoles.AcademicAdmin;
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// ═══════════ Rules (admin) ═══════════
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[HttpGet("rules")]
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[Authorize(Roles = Managers)]
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public async Task<ActionResult> GetRules(Guid academicTermId, CancellationToken ct) =>
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Ok(await db.WarningRules.AsNoTracking().Where(x => x.AcademicTermId == academicTermId)
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.OrderBy(x => x.Type).Select(x => new { x.Id, x.Type, x.Name, x.Threshold, x.IsEnabled, x.NotifyStudent, x.NotifyCounselor, x.Description })
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.ToListAsync(ct));
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[HttpPut("rules")]
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[Authorize(Roles = Managers)]
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public async Task<ActionResult> SaveRules(Guid academicTermId, List<WarningRuleDto> rules, CancellationToken ct)
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{
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var existing = await db.WarningRules.Where(x => x.AcademicTermId == academicTermId).ToListAsync(ct);
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db.WarningRules.RemoveRange(existing);
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foreach (var r in rules)
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{
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db.WarningRules.Add(new WarningRule
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{
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AcademicTermId = academicTermId, Type = r.Type, Name = r.Name.Trim(),
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Threshold = r.Threshold, IsEnabled = r.IsEnabled,
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NotifyStudent = r.NotifyStudent, NotifyCounselor = r.NotifyCounselor,
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Description = r.Description?.Trim()
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});
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}
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await db.SaveChangesAsync(ct);
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return NoContent();
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}
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// ═══════════ Detection + Records ═══════════
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[HttpPost("detect")]
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[Authorize(Roles = Managers)]
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public async Task<ActionResult> DetectWarnings(Guid academicTermId, CancellationToken ct)
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{
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var rules = await db.WarningRules.Where(x => x.AcademicTermId == academicTermId && x.IsEnabled).ToListAsync(ct);
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if (rules.Count == 0) return Ok(new { Generated = 0, Message = "当前学期无启用的预警规则。" });
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var studentInfos = await db.Students.Where(x => x.Status == StudentStatus.Active).Select(x => new StudentInfo(x.Id, x.UserId, x.Name, x.AdministrativeClassId)).ToListAsync(ct);
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var generated = new List<WarningRecord>();
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foreach (var rule in rules)
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{
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switch (rule.Type)
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{
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case WarningType.FailedCredits:
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generated.AddRange(await DetectFailedCredits(rule, academicTermId, studentInfos, ct));
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break;
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case WarningType.LowGPA:
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generated.AddRange(await DetectLowGPA(rule, academicTermId, studentInfos, ct));
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break;
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case WarningType.Absenteeism:
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generated.AddRange(await DetectAbsenteeism(rule, academicTermId, studentInfos, ct));
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break;
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case WarningType.GraduationDelay:
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generated.AddRange(await DetectGraduationDelay(rule, academicTermId, studentInfos, ct));
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break;
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}
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}
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if (generated.Count > 0)
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{
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db.WarningRecords.AddRange(generated);
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await db.SaveChangesAsync(ct);
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foreach (var w in generated)
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{
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var si = studentInfos.First(s => s.Id == w.StudentId);
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var r = rules.First(r => r.Type == w.Type);
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if (r.NotifyStudent && si.UserId.HasValue)
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await NotificationService.SendAsync(db, si.UserId.Value, "学业预警", w.Detail, "/warnings", cancellationToken: ct);
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if (r.NotifyCounselor)
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{
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var counselorId = await db.AdministrativeClasses.Where(c => c.Id == si.ClassId && c.CounselorUserId != null).Select(c => c.CounselorUserId!.Value).FirstOrDefaultAsync(ct);
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if (counselorId != default)
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await NotificationService.SendAsync(db, counselorId, "学生学业预警", $"{si.Name}：{w.Detail}", "/warnings", cancellationToken: ct);
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}
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}
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}
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return Ok(new { Generated = generated.Count });
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}
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[HttpGet("records")]
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[Authorize(Roles = Managers + "," + SystemRoles.Counselor)]
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public async Task<ActionResult> GetRecords(Guid? academicTermId, WarningType? type, CancellationToken ct)
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{
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var q = db.WarningRecords.AsNoTracking().AsQueryable();
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if (scope.Current.Scope == DataScope.College || scope.Current.IsInRole(SystemRoles.Counselor))
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{
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var classIds = await db.AdministrativeClasses.Where(c => c.CounselorUserId == scope.Current.UserId).Select(c => c.Id).ToListAsync(ct);
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if (classIds.Count > 0)
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q = q.Where(x => classIds.Contains(x.Student!.AdministrativeClassId));
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else if (scope.Current.RestrictedCollegeId.HasValue)
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q = q.Where(x => x.Student!.AdministrativeClass!.Major!.CollegeId == scope.Current.RestrictedCollegeId);
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}
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if (academicTermId.HasValue) q = q.Where(x => x.AcademicTermId == academicTermId);
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if (type.HasValue) q = q.Where(x => x.Type == type);
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return Ok(await q.OrderByDescending(x => x.CreatedAt).Select(x => new { x.Id, x.StudentId, StudentName = x.Student!.Name, StudentNumber = x.Student.StudentNumber, ClassName = x.Student.AdministrativeClass!.Name, x.Type, x.Status, x.TriggerValue, x.Detail, x.AcknowledgedAt, x.AcknowledgeComment, x.CreatedAt }).ToListAsync(ct));
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}
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// ═══════════ Student ═══════════
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[HttpGet("my-warnings")]
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[Authorize(Roles = SystemRoles.Student)]
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public async Task<ActionResult> GetMyWarnings(CancellationToken ct)
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{
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var sid = await GetStudentIdAsync(ct);
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if (sid is null) return StudentNotFound();
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return Ok(await db.WarningRecords.AsNoTracking().Where(x => x.StudentId == sid).OrderByDescending(x => x.CreatedAt)
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.Select(x => new { x.Id, x.Type, x.Status, x.TriggerValue, x.Detail, x.AcknowledgedAt, x.AcknowledgeComment, x.CreatedAt, TermName = x.AcademicTermId })
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.ToListAsync(ct));
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}
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[HttpPost("{id:guid}/acknowledge")]
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[Authorize(Roles = SystemRoles.Student)]
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public async Task<ActionResult> Acknowledge(Guid id, [FromBody] AckBody body, CancellationToken ct)
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{
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var sid = await GetStudentIdAsync(ct);
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if (sid is null) return StudentNotFound();
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var w = await db.WarningRecords.FirstOrDefaultAsync(x => x.Id == id && x.StudentId == sid, ct);
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if (w is null) return NotFound();
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if (w.Status != WarningStatus.Active) return ConflictProblem("该预警已处理。");
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w.Status = WarningStatus.Acknowledged;
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w.AcknowledgedAt = DateTime.UtcNow;
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w.AcknowledgeComment = body.Comment?.Trim();
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await db.SaveChangesAsync(ct);
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return NoContent();
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}
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// ═══════════ Detection logic ═══════════
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private async Task<List<WarningRecord>> DetectFailedCredits(WarningRule rule, Guid termId, List<StudentInfo> students, CancellationToken ct)
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{
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var records = new List<WarningRecord>();
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foreach (var s in students)
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{
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var failed = await db.GradeRecords.CountAsync(x => x.StudentId == s.Id && x.GradeSheet!.TeachingTask!.AcademicTermId == termId && x.GradeSheet.Status == GradeSheetStatus.Published && x.TotalScore < 60, ct);
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if (failed >= rule.Threshold)
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{
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if (await db.WarningRecords.AnyAsync(x => x.StudentId == s.Id && x.AcademicTermId == termId && x.Type == WarningType.FailedCredits, ct)) continue;
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records.Add(new WarningRecord { StudentId = s.Id, Type = rule.Type, TriggerValue = failed, Detail = $"不及格课程 {failed} 门，达到预警阈值 {rule.Threshold} 门。", AcademicTermId = termId });
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}
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}
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return records;
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}
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private async Task<List<WarningRecord>> DetectLowGPA(WarningRule rule, Guid termId, List<StudentInfo> students, CancellationToken ct)
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{
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var records = new List<WarningRecord>();
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foreach (var s in students)
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{
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var grades = await db.GradeRecords.Where(x => x.StudentId == s.Id && x.GradeSheet!.TeachingTask!.AcademicTermId == termId && x.GradeSheet.Status == GradeSheetStatus.Published && x.GradePoint != null).ToListAsync(ct);
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if (grades.Count == 0) continue;
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var gpa = grades.Average(x => x.GradePoint!.Value);
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if (gpa < rule.Threshold)
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{
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if (await db.WarningRecords.AnyAsync(x => x.StudentId == s.Id && x.AcademicTermId == termId && x.Type == WarningType.LowGPA, ct)) continue;
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records.Add(new WarningRecord { StudentId = s.Id, Type = rule.Type, TriggerValue = Math.Round(gpa, 2), Detail = $"平均绩点 {gpa:F2}，低于预警阈值 {rule.Threshold}。", AcademicTermId = termId });
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}
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}
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return records;
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}
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private async Task<List<WarningRecord>> DetectAbsenteeism(WarningRule rule, Guid termId, List<StudentInfo> students, CancellationToken ct)
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{
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var records = new List<WarningRecord>();
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foreach (var s in students)
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{
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var absent = await db.AttendanceRecords.CountAsync(x => x.StudentId == s.Id && x.AttendanceSheet!.Status == AttendanceSheetStatus.Submitted && x.AttendanceSheet.TeachingTask!.AcademicTermId == termId && (x.Status == AttendanceStatus.Absent || x.Status == AttendanceStatus.Late), ct);
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if (absent >= rule.Threshold)
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{
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if (await db.WarningRecords.AnyAsync(x => x.StudentId == s.Id && x.AcademicTermId == termId && x.Type == WarningType.Absenteeism, ct)) continue;
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records.Add(new WarningRecord { StudentId = s.Id, Type = rule.Type, TriggerValue = absent, Detail = $"缺勤/迟到 {absent} 次，达到预警阈值 {rule.Threshold} 次。", AcademicTermId = termId });
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}
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}
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return records;
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}
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private async Task<List<WarningRecord>> DetectGraduationDelay(WarningRule rule, Guid termId, List<StudentInfo> students, CancellationToken ct)
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{
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var records = new List<WarningRecord>();
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foreach (var s in students)
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{
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var total = await db.GradeRecords.CountAsync(x => x.StudentId == s.Id && x.GradeSheet!.Status == GradeSheetStatus.Published && x.TotalScore < 60, ct);
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if (total >= rule.Threshold)
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{
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if (await db.WarningRecords.AnyAsync(x => x.StudentId == s.Id && x.AcademicTermId == termId && x.Type == WarningType.GraduationDelay, ct)) continue;
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records.Add(new WarningRecord { StudentId = s.Id, Type = rule.Type, TriggerValue = total, Detail = $"累计不及格 {total} 门，达到延毕预警阈值 {rule.Threshold} 门。", AcademicTermId = termId });
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}
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}
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return records;
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}
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private async Task<Guid?> GetStudentIdAsync(CancellationToken ct) => await db.Students.Where(s => s.UserId == scope.Current.UserId).Select(s => (Guid?)s.Id).FirstOrDefaultAsync(ct);
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private ActionResult StudentNotFound() => Conflict(new ProblemDetails { Title = "未关联学生档案", Status = 409 });
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private ActionResult ConflictProblem(string d) => Conflict(new ProblemDetails { Title = "操作失败", Detail = d, Status = 409 });
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}
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public sealed record StudentInfo(Guid Id, Guid? UserId, string Name, Guid ClassId);
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public sealed record WarningRuleDto(WarningType Type, [MaxLength(100)] string Name, decimal Threshold, bool IsEnabled, bool NotifyStudent, bool NotifyCounselor, [MaxLength(300)] string? Description);
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public sealed record AckBody([MaxLength(300)] string? Comment);
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