feat: leaderboard and data export

app/main/routes.py

@@ -30,7 +30,108 @@ def rollcall():
 @main_bp.route("/stats")
 @login_required
 def stats():
-    return render_template("stats.html")
+    # 排行榜：按总积分、出勤次数、学号排序
+    students = (
+        Student.query.filter_by(user_id=current_user.id)
+        .order_by(
+            Student.total_score.desc(),
+            Student.attendance_count.desc(),
+            Student.student_no.asc(),
+        )
+        .all()
+    )
+
+    # 最近点名记录
+    records = (
+        db.session.query(RollCall, Student)
+        .join(Student, RollCall.student_id == Student.id)
+        .filter(RollCall.user_id == current_user.id)
+        .order_by(RollCall.call_time.desc())
+        .limit(50)
+        .all()
+    )
+
+    return render_template("stats.html", students=students, records=records)
+
+
+@main_bp.route("/stats/export/students")
+@login_required
+def export_students():
+    # 导出当前账号学生积分详单
+    students = (
+        Student.query.filter_by(user_id=current_user.id)
+        .order_by(Student.student_no.asc())
+        .all()
+    )
+
+    import csv
+    from io import StringIO
+    from flask import Response
+
+    output = StringIO()
+    writer = csv.writer(output)
+    writer.writerow(["学号", "姓名", "专业", "出勤次数", "随机点名次数", "总积分"])
+    for s in students:
+        writer.writerow(
+            [
+                s.student_no,
+                s.name,
+                s.major or "",
+                s.attendance_count or 0,
+                s.random_called_count or 0,
+                f"{(s.total_score or 0):.1f}",
+            ]
+        )
+
+    output.seek(0)
+    return Response(
+        output.getvalue().encode("utf-8-sig"),
+        mimetype="text/csv; charset=utf-8",
+        headers={
+            "Content-Disposition": "attachment; filename=students_scores.csv",
+        },
+    )
+
+
+@main_bp.route("/stats/export/rollcalls")
+@login_required
+def export_rollcalls():
+    # 导出当前账号点名记录
+    records = (
+        db.session.query(RollCall, Student)
+        .join(Student, RollCall.student_id == Student.id)
+        .filter(RollCall.user_id == current_user.id)
+        .order_by(RollCall.call_time.asc())
+        .all()
+    )
+
+    import csv
+    from io import StringIO
+    from flask import Response
+
+    output = StringIO()
+    writer = csv.writer(output)
+    writer.writerow(["时间", "学号", "姓名", "模式", "状态", "积分变化"])
+    for rc, s in records:
+        writer.writerow(
+            [
+                rc.call_time.strftime("%Y-%m-%d %H:%M:%S"),
+                s.student_no,
+                s.name,
+                rc.mode,
+                rc.status,
+                f"{rc.score_change:.1f}",
+            ]
+        )
+
+    output.seek(0)
+    return Response(
+        output.getvalue().encode("utf-8-sig"),
+        mimetype="text/csv; charset=utf-8",
+        headers={
+            "Content-Disposition": "attachment; filename=rollcalls.csv",
+        },
+    )
 
 
 @main_bp.route("/manage")

app/templates/stats.html

@@ -1,6 +1,91 @@
 {% extends 'base.html' %}
 {% block title %}统计 - 课堂点名系统{% endblock %}
 {% block content %}
-<h4>统计页面占位</h4>
-<p>上半部分：积分随时间走势图；下半部分：排行榜；右侧：点名记录。</p>
+<div class="row mb-3">
+	<div class="col-md-8">
+		<h4>积分排行榜</h4>
+	</div>
+	<div class="col-md-4 text-end">
+		<a href="{{ url_for('main.export_students') }}" class="btn btn-sm btn-outline-primary">
+			导出积分详单
+		</a>
+		<a
+			href="{{ url_for('main.export_rollcalls') }}"
+			class="btn btn-sm btn-outline-secondary ms-2"
+		>
+			导出点名记录
+		</a>
+	</div>
+</div>
+
+<div class="row">
+	<div class="col-md-8">
+		<table class="table table-striped table-bordered">
+			<thead>
+				<tr>
+					<th>名次</th>
+					<th>学号</th>
+					<th>姓名</th>
+					<th>专业</th>
+					<th>总积分</th>
+					<th>出勤次数</th>
+					<th>随机点名次数</th>
+				</tr>
+			</thead>
+			<tbody>
+				{% for s in students %}
+				<tr>
+					<td>{{ loop.index }}</td>
+					<td>{{ s.student_no }}</td>
+					<td>{{ s.name }}</td>
+					<td>{{ s.major }}</td>
+					<td>{{ '%.1f'|format(s.total_score or 0) }}</td>
+					<td>{{ s.attendance_count or 0 }}</td>
+					<td>{{ s.random_called_count or 0 }}</td>
+				</tr>
+				{% else %}
+				<tr>
+					<td colspan="7" class="text-center">暂无学生数据。</td>
+				</tr>
+				{% endfor %}
+			</tbody>
+		</table>
+	</div>
+
+	<div class="col-md-4">
+		<h5>最近点名记录</h5>
+		<div class="table-responsive" style="max-height: 500px; overflow-y: auto">
+			<table class="table table-sm table-bordered">
+				<thead>
+					<tr>
+						<th>时间</th>
+						<th>姓名</th>
+						<th>学号</th>
+						<th>模式</th>
+						<th>状态</th>
+						<th>积分</th>
+					</tr>
+				</thead>
+				<tbody>
+					{% for rc, s in records %}
+					<tr>
+						<td>{{ rc.call_time.strftime('%m-%d %H:%M') }}</td>
+						<td>{{ s.name }}</td>
+						<td>{{ s.student_no }}</td>
+						<td>{{ '随机' if rc.mode == 'random' else '顺序' }}</td>
+						<td>
+							{% if rc.status == 'absent' %}缺勤{% elif rc.status == 'distracted' %}走神{% else %}到课{% endif %}
+						</td>
+						<td>{{ '%.1f'|format(rc.score_change or 0) }}</td>
+					</tr>
+					{% else %}
+					<tr>
+						<td colspan="6" class="text-center">暂无点名记录。</td>
+					</tr>
+					{% endfor %}
+				</tbody>
+			</table>
+		</div>
+	</div>
+</div>
 {% endblock %}