baekjoon-bot/app.py

from typing import Optional

from fastapi import FastAPI, HTTPException, Query, Depends
from fastapi.responses import JSONResponse
from dotenv import load_dotenv
from sqlalchemy import text
from sqlalchemy.ext.asyncio import AsyncSession

from utils import env, resolve_difficulty, resolve_tags, build_query, get_problem, require_admin
from db import get_db
from workbook_picker import pick_from_workbook
from workbook_enricher import enrich_workbook
# from workbook_importer import import_workbook


load_dotenv()

app = FastAPI()


@app.get("/")
def root():
    return {"status": "ok"}


@app.post("/admin/workbooks/{workbook_id}/enrich")
async def admin_enrich_workbook(
    workbook_id: int,
    only_missing: bool = Query(True, description="True면 NULL만 채움 / False면 덮어씀"),
    commit_every: int = Query(50, ge=1, le=500, description="몇 개마다 commit 할지"),
    sleep_sec: float = Query(0.12, ge=0.0, le=2.0, description="solved.ac 호출 사이 sleep"),
    db: AsyncSession = Depends(get_db),
    _: None = Depends(require_admin),
):
    result = await enrich_workbook(
        db,
        workbook_id=workbook_id,
        only_missing=only_missing,
        commit_every=commit_every,
        sleep_sec=sleep_sec,
    )
    return {"status": "ok", "result": result}

    
@app.delete("/admin/workbooks/{workbook_id}/reset")
async def reset_workbook_progress(
    workbook_id: int,
    db: AsyncSession = Depends(get_db),
    _: None = Depends(require_admin),
):
    try:
        res = await db.execute(
            text("DELETE FROM workbook_sends WHERE workbook_id = :wid"),
            {"wid": workbook_id},
        )
        await db.commit()

        # res.rowcount: 삭제된 행 수(=초기화된 문제 수)
        return {
            "status": "ok",
            "workbook_id": workbook_id,
            "deleted_sends": int(res.rowcount or 0),
            "message": "workbook progress reset (problems can be picked again)",
        }
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@app.get("/today")
async def today(
    source_mode: str = Query(env("SOURCE_MODE_DEFAULT", "search"), description="search|workbook"),
    workbook_id: Optional[int] = Query(None, description="문제집 모드일 때 workbook id"),
    workbook_pick: str = Query("level_asc", description="random|level_asc"),

    difficulty_mode: str = Query(env("DIFFICULTY_MODE_DEFAULT", "easy"), description="easy|hard|all"),
    tag_mode: str = Query(env("TAG_MODE_DEFAULT", "easy"), description="easy|hard|all"),
    difficulty: Optional[str] = Query(None, description="예: 6..10 (주면 mode보다 우선)"),
    tags: Optional[str] = Query(None, description="예: dp,graphs (주면 mode보다 우선)"),
    lang: str = Query(env("LANG_DEFAULT", "all"), description="ko | en | ko,en | all"),

    db: AsyncSession = Depends(get_db),
):
    sm = (source_mode or "").lower().strip()
    if sm == "workbook":
        wid = workbook_id or (int(env("WORKBOOK_ID_DEFAULT")) if env("WORKBOOK_ID_DEFAULT") else None)
        if not wid:
            return JSONResponse(status_code=400, content={"error": "workbook_id is required for workbook mode"})

        pid, title, level = await pick_from_workbook(db, wid, pick=workbook_pick)
        if not pid:
            return JSONResponse(status_code=409, content={"error": "no_more_problems_in_workbook", "workbook_id": wid})

        problem_url = f"https://www.acmicpc.net/problem/{pid}"
        solved_url = f"https://solved.ac/problems/id/{pid}"
        level_text = f"Lv. {level}" if level is not None else "Lv. ?"

        discord_payload = {
            "embeds": [{
                "title": "🔔 오늘의 백준 추천 문제 (문제집)",
                "description": (
                    f"**{pid}번: {title}**\n"
                    f"난이도: **{level_text}**\n"
                    f"source_mode: `workbook` / workbook_id: `{wid}`"
                ),
                "fields": [
                    {"name": "문제 링크", "value": f"[바로가기]({problem_url})", "inline": True},
                    {"name": "해설/정보", "value": f"[Solved.ac]({solved_url})", "inline": True},
                ],
                "footer": {"text": "매일 오전 10시 정기 알림 (n8n)"}
            }]
        }

        return {
            "source_mode": "workbook",
            "workbook_id": wid,
            "problemId": pid,
            "title": title,
            "level": level,
            "problemUrl": problem_url,
            "solvedUrl": solved_url,
            "discordPayload": discord_payload,
        }

    # 2) 기존 search 모드(네가 쓰던 그대로)
    dm = (difficulty_mode or "").lower()
    tm = (tag_mode or "").lower()

    if dm not in ("easy", "hard", "all"):
        return JSONResponse(status_code=400, content={"error": "difficulty_mode must be easy|hard|all"})
    if tm not in ("easy", "hard", "all"):
        return JSONResponse(status_code=400, content={"error": "tag_mode must be easy|hard|all"})

    chosen_difficulty = resolve_difficulty(difficulty, dm)
    chosen_tags = resolve_tags(tags if tags is not None else None, tm)
    query = build_query(chosen_difficulty, chosen_tags, lang)

    pid, title, level = get_problem(query=query)
    if not pid:
        return JSONResponse(status_code=503, content={"error": "failed_to_fetch_problem", "query": query})

    problem_url = f"https://www.acmicpc.net/problem/{pid}"
    solved_url = f"https://solved.ac/problems/id/{pid}"
    level_text = f"Lv. {level}" if level is not None else "Lv. ?"

    discord_payload = {
        "embeds": [{
            "title": "🔔 오늘의 백준 추천 문제",
            "description": (
                f"**{pid}번: {title}**\n"
                f"난이도: **{level_text}**\n"
                f"difficulty_mode: `{dm}` / tag_mode: `{tm}` / lang: `{lang}`\n"
                f"filter: `{chosen_difficulty}` / tags: `{', '.join(chosen_tags) if chosen_tags else 'none'}`"
            ),
            "fields": [
                {"name": "문제 링크", "value": f"[바로가기]({problem_url})", "inline": True},
                {"name": "해설/정보", "value": f"[Solved.ac]({solved_url})", "inline": True},
            ],
            "footer": {"text": "매일 오전 10시 정기 알림 (n8n)"}
        }]
    }

    return {
        "source_mode": "search",
        "difficulty_mode": dm,
        "tag_mode": tm,
        "lang": lang,
        "difficulty": chosen_difficulty,
        "tags": chosen_tags,
        "query": query,
        "problemId": pid,
        "title": title,
        "level": level,
        "problemUrl": problem_url,
        "solvedUrl": solved_url,
        "discordPayload": discord_payload,
    }


# 백준 사이트는 beautifulsoap 크롤링이 안됨
# @app.post("/admin/workbooks/{workbook_id}/import")
# async def admin_import_workbook(
#     workbook_id: int,
#     title: Optional[str] = Query(None, description="문제집 제목(옵션)"),
#     db: AsyncSession = Depends(get_db),
# ):
#     try:
#         result = await import_workbook(db, workbook_id=workbook_id, title=title)
#         return {"status": "ok", "result": result}
#     except Exception as e:
#         return JSONResponse(status_code=500, content={"error": str(e)})