97 lines
4.2 KiB
Python
97 lines
4.2 KiB
Python
# views/lesson.py
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from flask import Blueprint, jsonify, request, render_template, session, current_app
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from werkzeug.exceptions import BadRequest
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from bson import ObjectId
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from datetime import datetime
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from ..auth.decorators import require_role
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from ..services.course_service import load_material,save_materials_markdown_cos
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bp = Blueprint('lesson', __name__)
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# 返回课时元信息（含三份 markdown 的可访问链接或直接内容）
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@bp.route('/api/materials/<material_id>/chapters/<chapter_name>/lessons/<lesson_name>', methods=['GET'])
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@require_role(roles="teacher")
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def edit_lesson_detail(material_id, chapter_name, lesson_name):
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teacher_uuid = session.get("user_uuid")
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teacher_id = current_app.extensions["uuid2username"][teacher_uuid]
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material = load_material(material_id)
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for chapter in material.chapters:
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if chapter.chapter_name == chapter_name:
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for lesson in chapter.lessons:
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if lesson.lesson_name == lesson_name:
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return render_template('lesson.html', lesson=lesson.model_dump(), role="teacher", material={**material.model_dump(), "material_id": material_id}, chapter=chapter.model_dump())
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return jsonify({"message": "课时不存在"}), 404
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# 返回某份 markdown 文件内容（你也可以直接返回 S3/OSS 的直链）
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@bp.route('/api/lesson_file/<material_id>/<chapter_name>/<lesson_name>/<filename>', methods=['GET'])
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def get_markdown_file(material_id, chapter_name, lesson_name, filename):
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# TODO: 真实环境从存储读取
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demo_map = {
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"lesson.md": "# 主题\n## 阶段一\n### 步骤A\n内容A...\n### 步骤B\n内容B...\n",
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"prompt.md": "# 主题\n## 阶段一\n### 步骤A\n提示A...\n### 步骤B\n提示B...\n",
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"score_prompt.md": "# 主题\n## 阶段一\n### 步骤A\n评分A...\n### 步骤B\n评分B...\n"
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}
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return demo_map.get(filename, ""), 200
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@bp.route("/api/materials/save/<material_id>/<chapter_name>/<lesson_name>", methods=['POST'])
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@require_role(roles='teacher')
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def save_materials_markdown(material_id, chapter_name, lesson_name):
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payload = request.get_json(silent=True, force=True)
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if not payload:
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raise BadRequest("缺少 JSON payload")
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# 基础校验
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required_keys = ("lesson", "prompt", "score")
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for k in required_keys:
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if k not in payload or not isinstance(payload[k], dict):
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raise BadRequest(f"缺少或非法字段: {k}")
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if "cdn_link" not in payload[k] or "content" not in payload[k]:
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raise BadRequest(f"{k} 需要包含 cdn_link 与 content 字段")
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if not isinstance(payload[k]["cdn_link"], str) or not isinstance(payload[k]["content"], str):
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raise BadRequest(f"{k}.cdn_link 与 {k}.content 必须为字符串")
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# 可选：版本/并发控制（若你前端传了）
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version = payload.get("version")
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docs = {
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"lesson": {
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"cdn_link": payload["lesson"]["cdn_link"].strip(),
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"content" : payload["lesson"]["content"]
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},
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"prompt": {
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"cdn_link": payload["prompt"]["cdn_link"].strip(),
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"content" : payload["prompt"]["content"]
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},
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"score": {
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"cdn_link": payload["score"]["cdn_link"].strip(),
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"content" : payload["score"]["content"]
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}
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}
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# 轻量防御：限制单次大小（自行按需调整）
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max_size = 4 * 1024 * 1024 # 2MB/份
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for name, doc in docs.items():
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if len(doc["content"].encode("utf-8")) > max_size:
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raise BadRequest(f"{name} 文档过大，超过 {max_size} 字节限制")
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# 调用服务层保存：写源站、刷新/回写 CDN、更新索引等
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# 建议服务层返回新版本/新链接等元信息
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result = save_materials_markdown_cos(
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material_id=material_id,
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chapter_name=chapter_name,
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lesson_name=lesson_name,
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docs=docs,
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version=version, # 可选，用于并发检测
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actor=getattr(request, "user", None) # 若你的鉴权中注入了当前教师
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)
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# 统一响应
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return jsonify({
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"ok": True,
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"material_id": material_id,
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"chapter_name": chapter_name,
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"lesson_name": lesson_name,
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"result": result # e.g. {"lesson":{"cdn_link": "...", "version":"..."}, ...}
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}), 200
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