api/courseware/teaching_copilot.py

# api/courseware/teaching_copilot.py
"""
Teaching Copilot & Student Adaptation：课堂实时辅助，按学生画像（Name, Progress, Behavior）动态调整建议。
"""
from typing import Optional, List, Dict, Any, Tuple

from api.config import client, DEFAULT_MODEL
from api.courseware.rag import get_rag_context_with_refs, inject_refs_instruction
from api.courseware.references import append_references_to_content
from api.courseware.prompts import TEACHING_COPILOT_SYSTEM, TEACHING_COPILOT_USER_TEMPLATE


def _format_student_profiles(profiles: List[Dict[str, Any]]) -> str:
    """将学生画像列表格式化为可读文本。"""
    if not profiles:
        return "（未提供）"
    lines = []
    for i, p in enumerate(profiles[:20], 1):
        name = p.get("name") or p.get("Name") or "—"
        progress = p.get("progress") or p.get("Progress") or "—"
        behavior = p.get("behavior") or p.get("Behavior") or "—"
        lines.append(f"- 学生{i}: Name={name}, Progress={progress}, Behavior={behavior}")
    return "\n".join(lines)


def teaching_copilot(
    current_content: str,
    student_profiles: Optional[List[Dict[str, Any]]] = None,
    max_tokens: int = 1200,
    history: Optional[list] = None,
) -> str:
    """
    课堂实时辅助：根据当前授课内容与学生画像给出即时建议与个性化调整。
    """
    query = current_content[:1500]
    rag_context, refs = get_rag_context_with_refs(query, top_k=6, max_context_chars=3500)
    ref_instruction = inject_refs_instruction(refs)
    profiles_text = _format_student_profiles(student_profiles or [])
    user_content = TEACHING_COPILOT_USER_TEMPLATE.format(
        current_content=current_content.strip() or "（未提供当前内容）",
        student_profiles=profiles_text,
        rag_context=rag_context or "（无检索到知识库摘录。）",
        ref_instruction=ref_instruction,
    )
    messages = [{"role": "system", "content": TEACHING_COPILOT_SYSTEM}]
    if history:
        for user_msg, assistant_msg in history[-10:]:
            if user_msg:
                messages.append({"role": "user", "content": user_msg})
            if assistant_msg:
                messages.append({"role": "assistant", "content": assistant_msg})
    messages.append({"role": "user", "content": user_content})
    
    try:
        resp = client.chat.completions.create(
            model=DEFAULT_MODEL,
            messages=messages,
            temperature=0.5,
            max_tokens=max_tokens,
            timeout=60,
        )
        out = (resp.choices[0].message.content or "").strip()
    except Exception as e:
        out = f"生成失败：{e}。请稍后重试。"
    if refs and "## References" not in out and "[Source:" not in out:
        out = append_references_to_content(out, refs)
    return out