"""Claude API 기반 블로그 글 품질 리뷰 — 6기준 × 10점, 42/60 통과."""

import json
import logging
from typing import Any, Dict, Optional

import anthropic

from .config import ANTHROPIC_API_KEY, CLAUDE_MODEL
from .db import get_template

logger = logging.getLogger(__name__)

PASS_THRESHOLD = 42  # 60점 만점 중 42점 이상이면 통과 (70%)

_client: Optional[anthropic.Anthropic] = None


def _get_client() -> anthropic.Anthropic:
    global _client
    if _client is None:
        _client = anthropic.Anthropic(api_key=ANTHROPIC_API_KEY)
    return _client


def review_post(title: str, body: str) -> Dict[str, Any]:
    """블로그 글 품질 리뷰.

    Returns:
        {
            "scores": {
                "empathy": N, "click_appeal": N, "conversion": N,
                "seo": N, "format": N, "link_natural": N
            },
            "total": N,
            "pass": bool,
            "feedback": str
        }
    """
    template = get_template("quality_review")
    if not template:
        raise RuntimeError("quality_review 템플릿이 없습니다")

    prompt = template.format(title=title, body=body[:6000])

    client = _get_client()
    resp = client.messages.create(
        model=CLAUDE_MODEL,
        max_tokens=2048,
        messages=[{"role": "user", "content": prompt}],
    )
    raw = resp.content[0].text

    try:
        text = raw.strip()
        if text.startswith("```"):
            lines = text.split("\n")
            lines = [l for l in lines if not l.strip().startswith("```")]
            text = "\n".join(lines)
        result = json.loads(text)

        scores = result.get("scores", {})
        total = sum(scores.values())
        passed = total >= PASS_THRESHOLD

        return {
            "scores": scores,
            "total": total,
            "pass": passed,
            "feedback": result.get("feedback", ""),
        }
    except (json.JSONDecodeError, KeyError, TypeError) as e:
        logger.warning("Quality review JSON parse failed: %s", e)
        return {
            "scores": {
                "empathy": 0, "click_appeal": 0, "conversion": 0,
                "seo": 0, "format": 0, "link_natural": 0,
            },
            "total": 0,
            "pass": False,
            "feedback": f"리뷰 파싱 실패. 원본 응답:\n{raw[:500]}",
        }