feat: 初始提交 v1.2.0 - 钢琴练习方案生成系统

app/routes/problems.py

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+# 问题记录路由
+
+from flask import request, jsonify
+from app.routes import main_bp
+from app.models import db, Student, StudentProblem
+from app.routes.auth import login_required_json
+
+
+@main_bp.route("/api/students/<int:student_id>/problems", methods=["GET"])
+@login_required_json
+def get_student_problems(student_id):
+    """获取学员的问题列表"""
+    student = Student.query.get_or_404(student_id)
+    problems = student.problems.all()
+    return jsonify([p.to_dict() for p in problems])
+
+
+@main_bp.route("/api/students/<int:student_id>/problems", methods=["POST"])
+@login_required_json
+def add_student_problem(student_id):
+    """为学员添加问题（同步模式：先删再加）"""
+    student = Student.query.get_or_404(student_id)
+    data = request.get_json()
+
+    problems = data.get("problems", [])
+    submitted_ids = set()
+
+    # 删除旧的问题（如果勾选被取消）
+    existing = StudentProblem.query.filter_by(student_id=student_id).all()
+    for e in existing:
+        if e.problem_id not in [p.get("problem_id") for p in problems]:
+            db.session.delete(e)
+
+    # 添加或更新问题
+    for p in problems:
+        problem_id = p.get("problem_id")
+        submitted_ids.add(problem_id)
+
+        # 检查是否已存在
+        existing = StudentProblem.query.filter_by(
+            student_id=student_id, problem_id=problem_id
+        ).first()
+
+        if existing:
+            # 更新现有记录
+            existing.severity = p.get("severity")
+            existing.level = p.get("level")
+        else:
+            # 添加新记录
+            problem = StudentProblem(
+                student_id=student_id,
+                problem_id=problem_id,
+                problem_name=p.get("problem_name"),
+                severity=p.get("severity"),
+                level=p.get("level"),
+            )
+            db.session.add(problem)
+
+    db.session.commit()
+    return jsonify({"message": "问题记录成功"})
+
+
+@main_bp.route("/api/students/<int:student_id>/problems", methods=["DELETE"])
+@login_required_json
+def clear_student_problems(student_id):
+    """清除学员的问题记录"""
+    StudentProblem.query.filter_by(student_id=student_id).delete()
+    db.session.commit()
+    return jsonify({"message": "清除成功"})
+
+
+@main_bp.route(
+    "/api/students/<int:student_id>/problems/<problem_id>", methods=["DELETE"]
+)
+@login_required_json
+def delete_single_problem(student_id, problem_id):
+    """删除学员的单个问题"""
+    StudentProblem.query.filter_by(
+        student_id=student_id, problem_id=problem_id
+    ).delete()
+    db.session.commit()
+    return jsonify({"message": "删除成功"})