智教助手平台：完整初始化
- 前端：Vue3 + TS + Element Plus，24 个页面路由（课件/组题/教案/动画/思维导图/作文批改/命题/课堂/资源/社区等） - 后端：FastAPI + SQLAlchemy + SQLite，17 个路由模块，AI 服务层含降级模板 - AI：glm-5.x 推理模型已禁用思维链，确保输出真实内容 - 修复：ai_service 两处请求体注入 enable_thinking/thinking disabled - 测试账号：13900999999 / test1234
This commit is contained in:
Zhang Jing Xuan
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import re
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from collections import Counter
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from datetime import datetime, timezone
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from io import BytesIO
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from html import escape
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from urllib.parse import quote
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from docx import Document
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from fastapi import APIRouter, Depends, HTTPException, Query
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from fastapi.responses import StreamingResponse
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from sqlalchemy.orm import Session
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from database import get_db
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from models.classroom import ClassroomActivity
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from models.user import User
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from schemas.classroom import (
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ClassroomActivityCreate,
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ClassroomAnalysisOut,
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ClassroomActivityOut,
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ClassroomActivityUpdate,
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ClassroomResponseCreate,
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)
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from services.auth import get_current_user
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router = APIRouter(prefix="/api/classroom", tags=["课堂工具"])
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STOP_WORDS = {
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"这个", "我们", "老师", "学生", "因为", "所以", "可以", "需要", "没有", "已经",
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"the", "and", "that", "with", "this", "from", "have", "will",
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}
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def _format_answer(answer) -> str:
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if isinstance(answer, str):
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return answer.strip()
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if answer is None:
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return ""
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return str(answer)
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def _percent(count: int, total: int) -> int:
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return round((count / total) * 100) if total else 0
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def _extract_keywords(text: str) -> list[dict]:
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words = re.findall(r"[\u4e00-\u9fa5]{2,}|[a-zA-Z0-9]{2,}", text)
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counter = Counter(word for word in words if word.lower() not in STOP_WORDS)
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return [{"keyword": word, "count": count} for word, count in counter.most_common(10)]
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def _infer_correct_answer(activity: ClassroomActivity) -> str:
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config = activity.config or {}
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for key in ("answer", "correct_answer", "correctAnswer"):
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value = config.get(key)
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if value:
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return str(value).strip()
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return ""
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def _build_mastery_level(activity_type: str, response_count: int, accuracy: int | None, option_stats: list[dict]) -> str:
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if response_count <= 0:
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return "暂无数据"
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if accuracy is not None:
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if accuracy >= 85:
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return "整体掌握较好"
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if accuracy >= 60:
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return "基础掌握，仍需巩固"
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return "薄弱点明显，建议重点讲评"
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if option_stats:
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top = max(option_stats, key=lambda item: item["count"])
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if top["percent"] >= 70:
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return f"倾向集中：{top['option']}"
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if top["percent"] >= 45:
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return f"主要倾向：{top['option']}"
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return "分布分散，需要追问原因"
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if activity_type in {"qa", "feedback"}:
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return "已收集开放反馈"
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return "已收集课堂数据"
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def _build_diagnosis(
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activity: ClassroomActivity,
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response_count: int,
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participant_count: int,
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option_stats: list[dict],
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keywords: list[dict],
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accuracy: int | None,
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) -> list[str]:
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if response_count <= 0:
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return ["尚未收到学生提交，建议先发布活动并提醒学生扫码参与。"]
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diagnosis = [f"本次共收到 {response_count} 条提交，覆盖 {participant_count} 名学生。"]
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if accuracy is not None:
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diagnosis.append(f"按正确答案统计，当前正确率为 {accuracy}%。")
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if option_stats:
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top = max(option_stats, key=lambda item: item["count"])
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diagnosis.append(f"选择最多的是“{top['option']}”，占比 {top['percent']}%。")
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weak_options = [item for item in option_stats if item["count"] and item["percent"] >= 20 and item is not top]
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if weak_options:
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names = "、".join(item["option"] for item in weak_options[:3])
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diagnosis.append(f"仍有较多学生选择“{names}”，建议追问选择原因。")
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if keywords:
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diagnosis.append("开放回答中高频词包括：" + "、".join(item["keyword"] for item in keywords[:5]) + "。")
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if activity.activity_type == "checkin":
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diagnosis.append("该活动更适合作为参与记录，可结合后续测验或反馈判断掌握情况。")
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return diagnosis
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def _build_teaching_suggestions(
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activity: ClassroomActivity,
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response_count: int,
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option_stats: list[dict],
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accuracy: int | None,
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keywords: list[dict],
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) -> list[str]:
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if response_count <= 0:
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return ["先用投放链接收集至少 5 条反馈，再生成更可靠的讲评建议。"]
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suggestions = []
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if accuracy is not None and accuracy < 60:
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suggestions.append("用 5 分钟回到概念源头，先讲清关键定义或公式来源，再做同类例题。")
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suggestions.append("安排 3 道低门槛变式题，确认学生能独立完成基本步骤。")
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elif accuracy is not None and accuracy < 85:
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suggestions.append("挑选一个典型错选项进行对比讲评，让学生说出错误思路。")
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suggestions.append("追加 2 到 3 道变式练习，覆盖易错条件和表达规范。")
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elif accuracy is not None:
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suggestions.append("整体掌握较好，可进入拓展任务或让学生互相解释解题依据。")
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elif option_stats:
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top = max(option_stats, key=lambda item: item["count"])
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suggestions.append(f"围绕“{top['option']}”这个主流反馈追问原因，确认学生是理解到位还是凭感觉选择。")
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suggestions.append("让不同选择的学生各举一个理由，形成板书对比后再归纳共识。")
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else:
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suggestions.append("把高频回答聚类成 2 到 3 类，在下一轮讲评中分别回应。")
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if keywords:
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suggestions.append(f"优先处理“{keywords[0]['keyword']}”相关问题，并设计一个即时追问。")
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suggestions.append("课末再投放一次简短反馈，比较讲评前后的变化。")
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return suggestions[:5]
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def _build_followup_prompt(activity: ClassroomActivity, analysis: dict) -> str:
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question = analysis.get("question") or activity.title
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diagnosis = "；".join(analysis.get("diagnosis") or [])
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material_context = str((activity.config or {}).get("material_context") or "").strip()
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material_part = f"参考素材：{material_context}。" if material_context else ""
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return (
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f"基于课堂数据回收《{activity.title}》生成一套二次巩固练习。"
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f"回收题目：{question}。"
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f"{material_part}"
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f"学情诊断：{diagnosis}。"
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"要求题目有梯度，覆盖高频错误点，附答案和解析。"
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)
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def _safe_filename(name: str, suffix: str) -> str:
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stem = re.sub(r"[\\/:*?\"<>|\r\n]+", "_", name).strip(" .") or "课堂诊断报告"
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return f"{stem[:80]}{suffix}"
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def _excel_cell(value, cell_type: str = "String") -> str:
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if value is None:
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value = ""
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if isinstance(value, datetime):
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value = value.strftime("%Y-%m-%d %H:%M:%S")
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text = escape(str(value), quote=False)
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return f"<Cell><Data ss:Type=\"{cell_type}\">{text}</Data></Cell>"
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def _excel_row(values: list) -> str:
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return "<Row>" + "".join(_excel_cell(value) for value in values) + "</Row>"
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def _excel_sheet(name: str, rows: list[list]) -> str:
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safe_name = escape(name[:31] or "Sheet", quote=True)
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body = "\n".join(_excel_row(row) for row in rows)
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return f"<Worksheet ss:Name=\"{safe_name}\"><Table>{body}</Table></Worksheet>"
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def _build_activity_workbook(activity: ClassroomActivity, analysis: dict) -> bytes:
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responses = list(activity.responses or [])
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detail_rows = [
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["活动ID", "活动标题", "活动类型", "学生姓名", "回答", "提交时间", "来源"],
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*[
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[
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activity.id,
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activity.title,
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activity.activity_type,
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res.get("student_name") or "匿名",
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_format_answer(res.get("answer")),
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res.get("submitted_at") or "",
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(res.get("meta") or {}).get("source", ""),
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]
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for res in responses
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],
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]
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stats_rows = [
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["指标", "数值"],
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["提交数", analysis["response_count"]],
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["参与学生数", analysis["participant_count"]],
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["掌握水平", analysis["mastery_level"]],
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["正确率", "" if analysis["accuracy"] is None else f"{analysis['accuracy']}%"],
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["回收题目", analysis["question"]],
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]
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if analysis["option_stats"]:
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stats_rows.extend([[], ["选项", "人数", "占比"]])
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stats_rows.extend([[item["option"], item["count"], f"{item['percent']}%"] for item in analysis["option_stats"]])
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if analysis["keywords"]:
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stats_rows.extend([[], ["关键词", "次数"]])
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stats_rows.extend([[item["keyword"], item["count"]] for item in analysis["keywords"]])
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diagnosis_rows = [
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["诊断结论"],
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*[[item] for item in analysis["diagnosis"]],
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[],
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["讲评建议"],
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*[[item] for item in analysis["teaching_suggestions"]],
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[],
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["二次练习提示词"],
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[analysis["followup_prompt"]],
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]
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workbook = f"""<?xml version="1.0" encoding="UTF-8"?>
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<?mso-application progid="Excel.Sheet"?>
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<Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet"
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xmlns:o="urn:schemas-microsoft-com:office:office"
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xmlns:x="urn:schemas-microsoft-com:office:excel"
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xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet">
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{_excel_sheet("提交明细", detail_rows)}
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{_excel_sheet("统计汇总", stats_rows)}
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{_excel_sheet("诊断建议", diagnosis_rows)}
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</Workbook>
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"""
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return workbook.encode("utf-8")
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def _analysis_payload(activity: ClassroomActivity) -> dict:
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responses = list(activity.responses or [])
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response_count = len(responses)
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participants = {
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str(res.get("student_name") or "匿名").strip() or "匿名"
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for res in responses
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}
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participant_count = len(participants)
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answers = [_format_answer(res.get("answer")) for res in responses]
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answer_text = " ".join(answers)
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config = activity.config or {}
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options = [str(option).strip() for option in config.get("options", []) if str(option).strip()]
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option_stats = []
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if options:
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counter = Counter(answers)
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option_stats = [
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{"option": option, "count": counter.get(option, 0), "percent": _percent(counter.get(option, 0), response_count)}
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for option in options
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]
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correct_answer = _infer_correct_answer(activity)
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accuracy = None
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if correct_answer and response_count:
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accuracy = _percent(sum(1 for answer in answers if answer == correct_answer), response_count)
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common_answers = [answer for answer, _ in Counter(answer for answer in answers if answer).most_common(6)]
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keywords = _extract_keywords(answer_text)
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mastery_level = _build_mastery_level(activity.activity_type, response_count, accuracy, option_stats)
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diagnosis = _build_diagnosis(activity, response_count, participant_count, option_stats, keywords, accuracy)
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teaching_suggestions = _build_teaching_suggestions(activity, response_count, option_stats, accuracy, keywords)
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payload = {
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"activity_id": activity.id,
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"title": activity.title,
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"activity_type": activity.activity_type,
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"question": config.get("question") or activity.description or activity.title,
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"response_count": response_count,
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"participant_count": participant_count,
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"option_stats": option_stats,
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"keywords": keywords,
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"common_answers": common_answers,
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"mastery_level": mastery_level,
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"accuracy": accuracy,
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"diagnosis": diagnosis,
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"teaching_suggestions": teaching_suggestions,
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"generated_at": datetime.now(timezone.utc),
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}
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payload["followup_prompt"] = _build_followup_prompt(activity, payload)
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return payload
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def _public_activity_payload(activity: ClassroomActivity) -> ClassroomActivity:
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config = dict(activity.config or {})
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for key in ("answer", "correct_answer", "correctAnswer", "material_context"):
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config.pop(key, None)
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setattr(activity, "config", config)
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return activity
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def _add_bullets(document: Document, items: list[str]) -> None:
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for item in items:
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document.add_paragraph(str(item), style="List Bullet")
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@router.post("/activities", response_model=ClassroomActivityOut, status_code=201)
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def create_activity(
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data: ClassroomActivityCreate,
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current_user: User = Depends(get_current_user),
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db: Session = Depends(get_db),
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):
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activity = ClassroomActivity(user_id=current_user.id, **data.model_dump())
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db.add(activity)
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db.commit()
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db.refresh(activity)
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return activity
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@router.get("/activities", response_model=list[ClassroomActivityOut])
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def list_activities(
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activity_type: str = "",
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skip: int = Query(0, ge=0),
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limit: int = Query(20, ge=1, le=100),
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current_user: User = Depends(get_current_user),
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db: Session = Depends(get_db),
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):
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query = db.query(ClassroomActivity).filter(ClassroomActivity.user_id == current_user.id)
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if activity_type:
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query = query.filter(ClassroomActivity.activity_type == activity_type)
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return query.order_by(ClassroomActivity.updated_at.desc()).offset(skip).limit(limit).all()
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@router.get("/activities/{activity_id}", response_model=ClassroomActivityOut)
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def get_activity(
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activity_id: int,
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current_user: User = Depends(get_current_user),
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db: Session = Depends(get_db),
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):
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activity = db.query(ClassroomActivity).filter(
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ClassroomActivity.id == activity_id,
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ClassroomActivity.user_id == current_user.id,
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).first()
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if not activity:
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raise HTTPException(status_code=404, detail="课堂活动不存在")
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return activity
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@router.get("/activities/{activity_id}/analysis", response_model=ClassroomAnalysisOut)
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def analyze_activity(
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activity_id: int,
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current_user: User = Depends(get_current_user),
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db: Session = Depends(get_db),
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):
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activity = db.query(ClassroomActivity).filter(
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ClassroomActivity.id == activity_id,
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ClassroomActivity.user_id == current_user.id,
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).first()
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if not activity:
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raise HTTPException(status_code=404, detail="课堂活动不存在")
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return _analysis_payload(activity)
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@router.get("/activities/{activity_id}/analysis/export")
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def export_activity_analysis(
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activity_id: int,
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current_user: User = Depends(get_current_user),
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db: Session = Depends(get_db),
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):
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activity = db.query(ClassroomActivity).filter(
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ClassroomActivity.id == activity_id,
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ClassroomActivity.user_id == current_user.id,
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).first()
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if not activity:
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raise HTTPException(status_code=404, detail="课堂活动不存在")
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analysis = _analysis_payload(activity)
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document = Document()
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document.add_heading(f"课堂学情诊断报告：{activity.title}", level=1)
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document.add_paragraph(f"活动类型：{activity.activity_type}")
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document.add_paragraph(f"回收题目：{analysis['question']}")
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document.add_paragraph(f"生成时间：{analysis['generated_at'].strftime('%Y-%m-%d %H:%M:%S UTC')}")
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document.add_heading("核心指标", level=2)
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document.add_paragraph(f"提交数：{analysis['response_count']}")
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document.add_paragraph(f"参与学生数：{analysis['participant_count']}")
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document.add_paragraph(f"掌握水平：{analysis['mastery_level']}")
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if analysis["accuracy"] is not None:
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document.add_paragraph(f"正确率：{analysis['accuracy']}%")
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if analysis["option_stats"]:
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document.add_heading("选项分布", level=2)
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table = document.add_table(rows=1, cols=3)
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table.style = "Table Grid"
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hdr = table.rows[0].cells
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hdr[0].text = "选项"
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hdr[1].text = "人数"
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hdr[2].text = "占比"
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for item in analysis["option_stats"]:
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row = table.add_row().cells
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row[0].text = item["option"]
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row[1].text = str(item["count"])
|
||||
row[2].text = f"{item['percent']}%"
|
||||
|
||||
if analysis["keywords"]:
|
||||
document.add_heading("高频关键词", level=2)
|
||||
document.add_paragraph("、".join(f"{item['keyword']}({item['count']})" for item in analysis["keywords"]))
|
||||
|
||||
if analysis["common_answers"]:
|
||||
document.add_heading("常见回答", level=2)
|
||||
_add_bullets(document, analysis["common_answers"])
|
||||
|
||||
document.add_heading("诊断结论", level=2)
|
||||
_add_bullets(document, analysis["diagnosis"])
|
||||
|
||||
document.add_heading("讲评建议", level=2)
|
||||
_add_bullets(document, analysis["teaching_suggestions"])
|
||||
|
||||
document.add_heading("二次练习提示词", level=2)
|
||||
document.add_paragraph(analysis["followup_prompt"])
|
||||
|
||||
buffer = BytesIO()
|
||||
document.save(buffer)
|
||||
buffer.seek(0)
|
||||
filename = _safe_filename(f"{activity.title}-学情诊断报告", ".docx")
|
||||
return StreamingResponse(
|
||||
buffer,
|
||||
media_type="application/vnd.openxmlformats-officedocument.wordprocessingml.document",
|
||||
headers={"Content-Disposition": f"attachment; filename*=UTF-8''{quote(filename)}"},
|
||||
)
|
||||
|
||||
|
||||
@router.get("/activities/{activity_id}/responses/export")
|
||||
def export_activity_responses(
|
||||
activity_id: int,
|
||||
current_user: User = Depends(get_current_user),
|
||||
db: Session = Depends(get_db),
|
||||
):
|
||||
activity = db.query(ClassroomActivity).filter(
|
||||
ClassroomActivity.id == activity_id,
|
||||
ClassroomActivity.user_id == current_user.id,
|
||||
).first()
|
||||
if not activity:
|
||||
raise HTTPException(status_code=404, detail="课堂活动不存在")
|
||||
|
||||
analysis = _analysis_payload(activity)
|
||||
buffer = BytesIO(_build_activity_workbook(activity, analysis))
|
||||
filename = _safe_filename(f"{activity.title}-课堂数据回收", ".xls")
|
||||
return StreamingResponse(
|
||||
buffer,
|
||||
media_type="application/vnd.ms-excel",
|
||||
headers={"Content-Disposition": f"attachment; filename*=UTF-8''{quote(filename)}"},
|
||||
)
|
||||
|
||||
|
||||
@router.get("/public/activities/{activity_id}", response_model=ClassroomActivityOut)
|
||||
def get_public_activity(
|
||||
activity_id: int,
|
||||
db: Session = Depends(get_db),
|
||||
):
|
||||
activity = db.query(ClassroomActivity).filter(ClassroomActivity.id == activity_id).first()
|
||||
if not activity or activity.status not in {"active", "closed"}:
|
||||
raise HTTPException(status_code=404, detail="课堂活动不存在")
|
||||
return _public_activity_payload(activity)
|
||||
|
||||
|
||||
@router.put("/activities/{activity_id}", response_model=ClassroomActivityOut)
|
||||
def update_activity(
|
||||
activity_id: int,
|
||||
data: ClassroomActivityUpdate,
|
||||
current_user: User = Depends(get_current_user),
|
||||
db: Session = Depends(get_db),
|
||||
):
|
||||
activity = db.query(ClassroomActivity).filter(
|
||||
ClassroomActivity.id == activity_id,
|
||||
ClassroomActivity.user_id == current_user.id,
|
||||
).first()
|
||||
if not activity:
|
||||
raise HTTPException(status_code=404, detail="课堂活动不存在")
|
||||
for key, value in data.model_dump(exclude_unset=True).items():
|
||||
setattr(activity, key, value)
|
||||
db.commit()
|
||||
db.refresh(activity)
|
||||
return activity
|
||||
|
||||
|
||||
@router.post("/activities/{activity_id}/responses", response_model=dict, status_code=201)
|
||||
def submit_response(
|
||||
activity_id: int,
|
||||
data: ClassroomResponseCreate,
|
||||
db: Session = Depends(get_db),
|
||||
):
|
||||
activity = db.query(ClassroomActivity).filter(ClassroomActivity.id == activity_id).first()
|
||||
if not activity or activity.status == "archived":
|
||||
raise HTTPException(status_code=404, detail="课堂活动不存在")
|
||||
if activity.status != "active":
|
||||
raise HTTPException(status_code=409, detail="课堂活动未发布或已结束")
|
||||
|
||||
responses = list(activity.responses or [])
|
||||
responses.append({
|
||||
"student_name": data.student_name,
|
||||
"answer": data.answer,
|
||||
"meta": data.meta,
|
||||
"submitted_at": datetime.now(timezone.utc).isoformat(),
|
||||
})
|
||||
activity.responses = responses
|
||||
db.commit()
|
||||
return {"success": True, "count": len(responses)}
|
||||
|
||||
|
||||
@router.delete("/activities/{activity_id}", status_code=204)
|
||||
def delete_activity(
|
||||
activity_id: int,
|
||||
current_user: User = Depends(get_current_user),
|
||||
db: Session = Depends(get_db),
|
||||
):
|
||||
activity = db.query(ClassroomActivity).filter(
|
||||
ClassroomActivity.id == activity_id,
|
||||
ClassroomActivity.user_id == current_user.id,
|
||||
).first()
|
||||
if not activity:
|
||||
raise HTTPException(status_code=404, detail="课堂活动不存在")
|
||||
db.delete(activity)
|
||||
db.commit()
|
||||
Reference in New Issue
Block a user