"""
内容审核器

多维度检查投书质量：
  1. 评分项覆盖
  2. 废标项规避
  3. 字数达标
  4. 章节完整性
  5. 响应清单完整性
"""

from __future__ import annotations

import json
import logging
import re
from concurrent.futures import ThreadPoolExecutor, as_completed
from typing import List

from llm_client import LLMClient
from models import (
    BidOutline,
    Chapter,
    ChapterType,
    ReviewReport,
    ReviewIssue,
    TenderAnalysis,
    ScoringCriterion,
    RejectionItem,
    ResponseRequirement,
)
from config import get_config
from chapter_policy import ChapterEditMode, get_chapter_edit_mode
from step5_reviewing.policies import (
    analysis_has_package_info,
    find_body_indent_issues,
    find_duplicate_info_issues,
    find_heading_score_issues,
    find_package_info_issues,
    find_rejection_filling_issues,
    find_sibling_numbering_issues,
    find_template_integrity_issues,
)

logger = logging.getLogger(__name__)


def _heading_match_token(text: str) -> str:
    """归一化标题用于在父章实际文本中判断小节是否存在。"""
    value = re.sub(r"^第\s*[一二三四五六七八九十百\d]+\s*章\s*[：:]?\s*", "", (text or ""))
    return re.sub(r"[\s\u3000]+", "", value).rstrip("：:。；;")


def _chapter_effective_content(chapter: Chapter) -> str:
    """返回章节唯一正文；父章已有汇总正文时不再重复统计子章。"""
    if (chapter.generated_content or "").strip():
        return chapter.generated_content
    return "\n".join(
        _chapter_effective_content(child)
        for child in (chapter.children or [])
        if _chapter_effective_content(child).strip()
    )


def _canonical_outline_content(outline: BidOutline) -> str:
    """构建不重复父子内容的全文语料。"""
    return "\n".join(
        f"【{ch.id} {ch.title}】\n{_chapter_effective_content(ch)}"
        for ch in outline.chapters
        if _chapter_effective_content(ch).strip()
    )


def _balanced_outline_excerpt(
    outline: BidOutline,
    max_chars: int = 12000,
) -> str:
    """从每个顶层章节均匀取样，避免审核只看到文档开头。"""
    populated = [
        (ch, _chapter_effective_content(ch))
        for ch in outline.chapters
        if _chapter_effective_content(ch).strip()
    ]
    if not populated:
        return ""
    quota = max(500, max_chars // len(populated))
    blocks = []
    for ch, content in populated:
        available = max(quota - len(ch.id) - len(ch.title) - 8, 100)
        if len(content) > available:
            head = available * 2 // 3
            tail = available - head
            excerpt = content[:head] + "\n……\n" + content[-tail:]
        else:
            excerpt = content
        blocks.append(f"【{ch.id} {ch.title}】\n{excerpt}")
    return "\n".join(blocks)[:max_chars]


class _Reviewer:
    """内容审核器"""

    def __init__(self):
        self.llm = LLMClient()
        self.cfg = get_config()

    def review(
        self,
        outline: BidOutline,
        analysis: TenderAnalysis,
    ) -> ReviewReport:
        """执行全面审核"""
        issues: List[ReviewIssue] = []
        total_words = 0

        # 1. 字数统计（仅用于报告，不再做字数达标判定）
        for ch in outline.chapters:
            total_words += len(_chapter_effective_content(ch))
        total_words += self._count_template_words(outline)

        # 2. 标题格式/序号检查（确定性）
        issues.extend(self._check_heading_format(outline))

        # 3. 冗余信息删除（包号/重复/表前表后信息，包号与重复判断使用 LLM 结果）
        issues.extend(self._check_redundant_info(outline, analysis))

        report = ReviewReport(
            passed=len([i for i in issues if i.severity == "error"]) == 0,
            issues=issues,
            total_word_count=total_words,
        )

        return report

    # ============================================================
    #  评分项覆盖检查
    # ============================================================

    def _check_criteria_coverage(
        self,
        outline: BidOutline,
        criteria: List[ScoringCriterion],
    ) -> List[ReviewIssue]:
        """检查每个评分项是否按 Step3 大纲填充到其绑定节点。

        优先读取 Step3 持久化的评分绑定节点完整正文做 LLM 语义判断，
        避免再使用全书 12,000 字均衡抽样而遗漏章中部材料。LLM 失败或大纲
        缺少绑定时使用确定性关键词/空正文保底。
        """
        issues: List[ReviewIssue] = []

        all_content = _canonical_outline_content(outline)
        entries = list(getattr(outline, "evaluation_index_entries", []) or [])
        entries_by_criterion: dict[str, List[dict]] = {}
        for entry in entries:
            if entry.get("entry_type") != "scoring":
                continue
            cid = str(entry.get("criterion_id", "") or "")
            entries_by_criterion.setdefault(cid, []).append(entry)

        top_criteria = sorted(criteria, key=lambda c: c.max_score, reverse=True)
        llm_failed = False

        # 旧大纲缺少 evaluation_index_entries 时保留原有全书均衡抽样路径。
        if not entries_by_criterion:
            content_excerpt = _balanced_outline_excerpt(outline)
            try:
                for batch_start in range(0, len(top_criteria), 15):
                    batch = top_criteria[batch_start:batch_start + 15]
                    criteria_text = "\n".join(
                        f"[{c.id}] {c.category} | {c.name} ({c.max_score}分): "
                        f"{c.description[:200]}"
                        for c in batch
                    )
                    result = self.llm.extract_json(
                        system_prompt=(
                            "你是投标文件质量审核专家。严格检查投标书内容是否充分覆盖了"
                            "每条评分要求。只报告确实未覆盖或覆盖不足的项。"
                            "你必须输出一个 JSON 对象，包含 uncovered 数组和 summary 字符串。"
                        ),
                        user_prompt=(
                            f"## 本批评分标准（{len(batch)}项）\n{criteria_text}\n\n"
                            f"## 投标书内容（各章均衡抽样）\n{content_excerpt}\n\n"
                            "请逐一检查本批评分项是否被充分覆盖。\n"
                            '输出 JSON：{"uncovered": [{"criteria_id": "ID", '
                            '"reason": "说明"}], "summary": "总结"}'
                        ),
                        max_tokens=16384,
                    )
                    if not isinstance(result, dict):
                        llm_failed = True
                        continue
                    uncovered = result.get("uncovered", [])
                    if isinstance(uncovered, list):
                        for item in uncovered:
                            if not isinstance(item, dict):
                                continue
                            cid = item.get("criteria_id", "")
                            reason = item.get("reason", "")
                            matched = [c for c in criteria if c.id == cid]
                            if matched:
                                c = matched[0]
                                issues.append(ReviewIssue(
                                    chapter_id="*",
                                    severity="error",
                                    issue_type="missing_criterion",
                                    description=(
                                        f"[LLM深度检查] 评分项 [{c.id}] "
                                        f"{c.name} 未充分覆盖"
                                    ),
                                    suggestion=reason or f"需要补充{c.name}相关内容",
                                ))
            except Exception as e:
                logger.warning(f"LLM 覆盖检查失败: {e}，降级使用关键词检查")
                llm_failed = True
        else:
            scoring_entries = [
                entry for entry in entries
                if entry.get("entry_type") == "scoring"
            ]
            try:
                for batch_start in range(0, len(scoring_entries), 15):
                    batch = scoring_entries[batch_start:batch_start + 15]
                    blocks = []
                    for entry in batch:
                        evidence = self._bound_entry_evidence(outline, entry)
                        evidence = (
                            evidence[:2500] if evidence else "（未找到该评分项绑定正文）"
                        )
                        blocks.append(
                            f"[{entry.get('source_id')}] "
                            f"{entry.get('criterion_id')} | "
                            f"{entry.get('display_name')}\n"
                            f"评分要求：{entry.get('requirement', '')[:300]}\n"
                            f"绑定节点：{entry.get('final_heading_id')} "
                            f"{entry.get('final_heading_title')}\n"
                            f"绑定节点正文：\n{evidence}"
                        )
                    payload = "\n\n".join(blocks)
                    result = self.llm.extract_json(
                        system_prompt=(
                            "你是投标文件质量审核专家。系统已按 Step3 大纲把每个评分小项"
                            "绑定到唯一标题节点，并给出该节点正文。请只检查这些评分小项"
                            "是否在各自绑定节点中被充分覆盖。只报告确实未覆盖或覆盖不足的项。"
                            "输出 JSON：{\"uncovered\": [{\"source_id\": \"ID\", "
                            "\"reason\": \"说明\"}], \"summary\": \"总结\"}"
                        ),
                        user_prompt=(
                            f"## 本批评分小项与绑定正文（{len(batch)}项）\n{payload}\n\n"
                            '请逐一检查并输出 JSON。'
                        ),
                        max_tokens=16384,
                    )
                    if not isinstance(result, dict):
                        llm_failed = True
                        logger.warning("LLM 覆盖检查返回非预期格式")
                        continue
                    uncovered = result.get("uncovered", [])
                    if isinstance(uncovered, list):
                        for item in uncovered:
                            if not isinstance(item, dict):
                                continue
                            source_id = str(
                                item.get("source_id")
                                or item.get("criteria_id")
                                or ""
                            )
                            reason = item.get("reason", "")
                            entry = next(
                                (
                                    e for e in scoring_entries
                                    if str(e.get("source_id", "")) == source_id
                                    or str(e.get("criterion_id", "")) == source_id
                                ),
                                None,
                            )
                            cid = (
                                str(entry.get("criterion_id", ""))
                                if entry
                                else source_id.split("#", 1)[0]
                            )
                            matched = [c for c in criteria if c.id == cid]
                            if matched:
                                c = matched[0]
                                issues.append(ReviewIssue(
                                    chapter_id="*",
                                    severity="error",
                                    issue_type="missing_criterion",
                                    description=(
                                        f"[LLM深度检查] 评分项 [{c.id}] "
                                        f"{c.name} 未按 Step3 大纲充分覆盖"
                                    ),
                                    suggestion=reason or f"在绑定节点补充{c.name}相关内容",
                                ))
                    if result.get("summary"):
                        logger.info(f"LLM 覆盖检查: {result['summary']}")
            except Exception as e:
                logger.warning(f"LLM 覆盖检查失败: {e}，降级使用关键词检查")
                llm_failed = True

        # ---- 确定性保底：只报告绑定节点空正文或未映射，不做模糊关键词误报 ----
        if llm_failed:
            scoring_entries = [
                entry for entry in entries
                if entry.get("entry_type") == "scoring"
            ]
            mapped_ids = {
                str(entry.get("criterion_id", ""))
                for entry in scoring_entries
            }
            for entry in scoring_entries:
                criterion_id = str(entry.get("criterion_id", ""))
                evidence = self._bound_entry_evidence(outline, entry)
                if not evidence.strip():
                    issues.append(ReviewIssue(
                        chapter_id="*",
                        severity="error",
                        issue_type="missing_criterion",
                        description=(
                            f"评分项 [{criterion_id}] "
                            f"{entry.get('display_name', '')} 绑定节点内容为空"
                        ),
                        suggestion="在 Step3 绑定的最深层标题节点补充响应正文",
                    ))
            for criterion in criteria:
                if criterion.id in mapped_ids or not criterion.name:
                    continue
                if criterion.name[:4] in all_content:
                    continue
                issues.append(ReviewIssue(
                    chapter_id="*",
                    severity="warning",
                    issue_type="missing_criterion",
                    description=(
                        f"评分项 [{criterion.id}] {criterion.name} 未映射到任何章节"
                    ),
                    suggestion="需要将此项加入相关章节",
                ))

        return issues

    def _bound_criterion_evidence(
        self,
        outline: BidOutline,
        entries: List[dict],
    ) -> str:
        """收集某评分项绑定节点的完整正文（供旧调用方/单评分项证据使用）。"""
        nodes = self._bound_nodes(outline, entries)
        if not nodes:
            return ""
        parts = []
        for node in nodes:
            evidence = self._node_section_text(outline, node)
            if evidence:
                parts.append(f"【{node.id} {node.title}】\n{evidence}")
        return "\n\n".join(parts)

    def _bound_entry_evidence(self, outline: BidOutline, entry: dict) -> str:
        """返回单个评分小项绑定节点的正文，供 LLM 逐小项审核。"""
        nodes = self._bound_nodes(outline, [entry])
        if not nodes:
            return ""
        return self._node_section_text(outline, nodes[0])

    def _node_section_text(self, outline: BidOutline, node: Chapter) -> str:
        """返回绑定节点自身的正文；自身为空时按 Step3 标题关系切出对应小节。"""
        specific = "\n".join(
            part for part in (
                node.supplement_content or "",
                node.generated_content or "",
            )
            if part.strip()
        ).strip()
        if specific:
            return specific

        from step4_writing import _split_artifact_content_by_outline

        root_id = str(node.id).split(".", 1)[0]
        root = next(
            (chapter for chapter in outline.chapters if str(chapter.id) == root_id),
            None,
        )
        if root is None:
            return ""
        buckets = self._chapter_section_buckets(root)
        return "\n".join(buckets.get(str(node.id), []) or []).strip()

    def _chapter_section_buckets(self, root: Chapter) -> dict:
        """按章节缓存 Step3 标题切分结果，避免重复扫描大段正文。"""
        from step4_writing import _split_artifact_content_by_outline

        cache = getattr(self, "_section_bucket_cache", None)
        if cache is None:
            cache = {}
            self._section_bucket_cache = cache
        key = str(root.id)
        if key not in cache:
            cache[key] = _split_artifact_content_by_outline(root)
        return cache[key]

    def _bound_nodes(
        self,
        outline: BidOutline,
        entries: List[dict],
    ) -> List[Chapter]:
        """返回评分项在 Step3 大纲中绑定的最终标题节点。"""
        heading_ids = {
            str(entry.get("final_heading_id", "") or "")
            for entry in entries
            if entry.get("final_heading_id")
        }
        return [
            node for node in outline.flatten()
            if str(node.id) in heading_ids
        ]

    def _check_heading_format(self, outline: BidOutline) -> List[ReviewIssue]:
        """标题分值、同级序号与正文首行缩进的确定性检查。"""
        issues: List[ReviewIssue] = []
        issues.extend(find_heading_score_issues(outline))
        issues.extend(find_sibling_numbering_issues(outline))
        issues.extend(find_body_indent_issues(outline))
        return issues

    def _check_rejection_filling(self, outline: BidOutline) -> List[ReviewIssue]:
        """废标项是否按 Step3 大纲填充到第一章要求承诺函。"""
        entries = [
            entry for entry in getattr(outline, "evaluation_index_entries", []) or []
            if entry.get("entry_type") == "rejection"
        ]
        return find_rejection_filling_issues(outline, entries)

    def _check_cleanup_policies(
        self,
        outline: BidOutline,
        analysis: TenderAnalysis,
    ) -> List[ReviewIssue]:
        """无分包包号清理、重复正文与模板补充块一致性检查。"""
        issues: List[ReviewIssue] = []
        issues.extend(find_package_info_issues(
            outline, analysis_has_package_info(analysis)
        ))
        issues.extend(find_duplicate_info_issues(outline))
        issues.extend(find_template_integrity_issues(outline))
        return issues

    def _check_redundant_info(
        self,
        outline: BidOutline,
        analysis: TenderAnalysis,
    ) -> List[ReviewIssue]:
        """冗余信息删除：包号、重复正文，以及表前表后重复项目信息。"""
        issues: List[ReviewIssue] = []
        issues.extend(find_package_info_issues(
            outline, analysis_has_package_info(analysis)
        ))
        issues.extend(find_duplicate_info_issues(outline))
        issues.extend(self._check_redundant_info_with_llm(outline, analysis))
        return issues

    def _check_redundant_info_with_llm(
        self,
        outline: BidOutline,
        analysis: TenderAnalysis,
    ) -> List[ReviewIssue]:
        """用 LLM 判断表前表后重复信息及需要回填的 Step2 项目字段。"""
        fields = getattr(analysis, "project_fields", {}) or {}
        field_text = "\n".join(
            f"{key}：{value}" for key, value in fields.items()
        ) or "无"
        chapters = [
            chapter for chapter in outline.chapters
            if len((chapter.generated_content or "").strip()) >= 50
        ]
        if not chapters:
            return []

        max_workers = min(
            int(getattr(self.cfg, "max_concurrent_writers", 5) or 5),
            len(chapters),
        )
        logger.info(
            f"Step5 冗余信息 LLM 并发审核 {len(chapters)} 章 "
            f"(max_workers={max_workers})"
        )

        def _review_one(chapter):
            from llm_client import LLMClient
            return self._review_chapter_redundant(
                chapter, field_text, LLMClient()
            )

        issues: List[ReviewIssue] = []
        with ThreadPoolExecutor(max_workers=max_workers) as executor:
            futures = {
                executor.submit(_review_one, chapter): chapter
                for chapter in chapters
            }
            for future in as_completed(futures):
                issue = future.result()
                if issue is not None:
                    issues.append(issue)
        return issues

    def _review_chapter_redundant(
        self,
        chapter: Chapter,
        field_text: str,
        llm,
    ):
        """单个章节的冗余信息 LLM 判断，返回 ReviewIssue 或 None。"""
        content = (chapter.generated_content or "").strip()
        try:
            result = llm.extract_json(
                system_prompt=(
                    "你是投标文件冗余信息审核专家。请识别章节中表前/表后重复出现的"
                    "项目信息、重复段落，以及无实际包号时应删除的包号行；并结合给定"
                    "Step2 项目字段指出需要回填/补全的字段。只输出 JSON，不要改写正文。"
                ),
                user_prompt=(
                    f"## Step2 项目字段\n{field_text}\n\n"
                    f"## 章节正文（前 8000 字）\n{content[:8000]}\n\n"
                    '输出 JSON：{"removals": [{"text": "需删除原文", "reason": "原因"}], '
                    '"fills": [{"label": "服务内容", "value": "..."}]}'
                ),
                max_tokens=16384,
            )
            removals = result.get("removals", []) if isinstance(result, dict) else []
            fills = result.get("fills", []) if isinstance(result, dict) else []
            if removals or fills:
                return ReviewIssue(
                    chapter_id=chapter.id,
                    severity="error",
                    issue_type="redundant_info",
                    description=(
                        f"第{chapter.id}章存在需清理或回填的表前表后冗余信息"
                    ),
                    suggestion=json.dumps(
                        {"removals": removals, "fills": fills},
                        ensure_ascii=False,
                    ),
                )
        except Exception as exc:
            logger.warning(f"第{chapter.id}章冗余信息 LLM 判断失败，使用确定性结果: {exc}")
        return None

    def _check_response_requirements_coverage(
        self,
        outline: BidOutline,
        requirements: List[ResponseRequirement],
    ) -> List[ReviewIssue]:
        """检查必须提交的商务/技术响应清单是否被覆盖。

        优先使用 LLM 语义判断，避免关键词误报；LLM 失败时降级关键词兜底。
        """
        issues: List[ReviewIssue] = []
        required = [r for r in requirements if getattr(r, "required", True)]
        if not required:
            return issues

        all_content = _canonical_outline_content(outline)
        content_excerpt = _balanced_outline_excerpt(outline)
        llm_failed = False
        try:
            req_text = "\n".join(
                f"[{r.id}] {r.category or '响应要求'} | {r.name}：{r.description}"
                for r in required
            )
            result = self.llm.extract_json(
                system_prompt=(
                    "你是投标文件审核专家。请判断投标书正文是否逐项覆盖了"
                    "商务/技术响应文件清单中的必交项。只报告确实未覆盖或覆盖不足的项。"
                ),
                user_prompt=(
                    f"## 必交响应清单（共{len(required)}项）\n{req_text}\n\n"
                    f"## 投标书内容（各章均衡抽样）\n{content_excerpt}\n\n"
                    '输出严格 JSON：{"missing": [{"id": "RR-01", "reason": "说明"}]}'
                ),
                max_tokens=16384,
            )
            if isinstance(result, dict):
                missing = result.get("missing", [])
                if isinstance(missing, list):
                    for item in missing:
                        if not isinstance(item, dict):
                            continue
                        rid = item.get("id", "")
                        reason = item.get("reason", "")
                        matched = [r for r in required if r.id == rid]
                        if matched:
                            r = matched[0]
                            issues.append(ReviewIssue(
                                chapter_id="*",
                                severity="warning",
                                issue_type="response_incomplete",
                                description=f"[LLM检查] 响应清单项 [{r.id}] {r.name} 未充分覆盖",
                                suggestion=reason or f"补充“{r.name}”的说明或材料引用",
                            ))
            else:
                llm_failed = True
        except Exception as e:
            logger.warning(f"响应清单 LLM 覆盖检查失败: {e}，降级关键词检查")
            llm_failed = True

        if llm_failed:
            for req in required:
                name = (req.name or "").strip()
                desc = (req.description or "").strip()
                keyword = name[:8] or desc[:8]
                if not keyword:
                    continue
                if keyword in all_content or name in all_content:
                    continue
                issues.append(ReviewIssue(
                    chapter_id="*",
                    severity="warning",
                    issue_type="response_incomplete",
                    description=f"响应清单项 [{req.id}] {name} 未在正文中明确出现",
                    suggestion=f"建议补充“{name}”的说明或证明材料引用",
                ))
        return issues

    def _check_procurement_requirements_coverage(
        self,
        outline: BidOutline,
        procurement_requirements: str,
    ) -> List[ReviewIssue]:
        """对采购需求关键要求做覆盖检查。

        优先使用 LLM 判断；LLM 失败时降级为关键词兜底。
        """
        issues: List[ReviewIssue] = []
        if not procurement_requirements:
            return issues

        all_content = _canonical_outline_content(outline)
        content_excerpt = _balanced_outline_excerpt(outline)
        llm_failed = False
        try:
            result = self.llm.extract_json(
                system_prompt=(
                    "你是投标文件审核专家。请判断投标书正文是否充分覆盖采购需求中的关键要求。"
                    "只报告确实未覆盖或覆盖不足的要点。"
                ),
                user_prompt=(
                    f"## 采购需求关键要求\n{procurement_requirements[:6000]}\n\n"
                    f"## 投标书内容（各章均衡抽样）\n{content_excerpt}\n\n"
                    '输出严格 JSON：{"missing": ["要点1", "要点2"], "summary": "一句话总结"}'
                ),
                max_tokens=16384,
            )
            if isinstance(result, dict):
                missing = result.get("missing", [])
                if isinstance(missing, list) and missing:
                    issues.append(ReviewIssue(
                        chapter_id="*",
                        severity="warning",
                        issue_type="procurement_incomplete",
                        description="[LLM检查] 采购需求关键要求覆盖不足: " + ", ".join(
                            str(x)[:40] for x in missing[:5]
                        ),
                        suggestion="检查正文是否逐项响应采购需求中的关键要求",
                    ))
            else:
                llm_failed = True
        except Exception as e:
            logger.warning(f"采购需求 LLM 覆盖检查失败: {e}，降级关键词检查")
            llm_failed = True

        if llm_failed:
            key_lines = [
                line.strip()
                for line in procurement_requirements.splitlines()
                if line.strip() and ("：" in line or ":" in line)
            ]
            missing = []
            for line in key_lines[:8]:
                head = line.split("：")[0].split(":")[0].strip()
                if head and head not in all_content and line[:20] not in all_content:
                    missing.append(head[:30])
            if missing:
                issues.append(ReviewIssue(
                    chapter_id="*",
                    severity="warning",
                    issue_type="procurement_incomplete",
                    description=f"采购需求关键要求可能未覆盖: {', '.join(missing[:5])}",
                    suggestion="检查正文是否逐项响应采购需求中的关键要求",
                ))
        return issues


    # ============================================================
    #  废标项规避检查
    # ============================================================

    def _check_rejection_avoidance(
        self,
        outline: BidOutline,
        rejection_items: List[RejectionItem],
    ) -> List[ReviewIssue]:
        """检查是否触及废标条件（LLM 为主，正则保底）"""
        issues: List[ReviewIssue] = []

        all_content = _canonical_outline_content(outline)
        content_excerpt = _balanced_outline_excerpt(outline, max_chars=10000)

        # ---- 策略 A: LLM 废标风险分析（优先） ----
        if rejection_items:
            try:
                rejection_text = "\n".join(
                    f"[{r.id}] {r.description[:200]}"
                    for r in rejection_items[:10]
                )
                result = self.llm.extract_json(
                    system_prompt=(
                        "你是投标文件合规审核专家。检查投标书内容是否可能触发废标条件。"
                        "只报告有实际风险的问题，不要报告已经正确规避的情况。"
                        "你必须输出一个 JSON 对象，包含 risks 数组和 summary 字符串。"
                    ),
                    user_prompt=(
                        f"## 废标条件\n{rejection_text}\n\n"
                        f"## 投标书内容（各章均衡抽样）\n{content_excerpt}\n\n"
                        f"请检查是否可能触发废标。\n"
                        f'输出 JSON 对象格式：{{"risks": [{{"item_id": "RI-01", "description": "风险描述"}}], "summary": "总结"}}\n'
                        f'如果没有风险，输出 {{"risks": [], "summary": "所有废标条件均已正确规避"}}'
                    ),
                    max_tokens=8192,
                )
                if isinstance(result, dict):
                    risks = result.get("risks", [])
                    if isinstance(risks, list):
                        for risk in risks:
                            if isinstance(risk, dict):
                                issues.append(ReviewIssue(
                                    chapter_id="*",
                                    severity="error",
                                    issue_type="rejection_involved",
                                    description=f"[LLM检查] 废标风险: {risk.get('description', '')}",
                                    suggestion="请人工检查并修正相关内容",
                                ))
                    if result.get("summary"):
                        logger.info(f"LLM 废标检查: {result['summary']}")
                    return issues  # LLM 成功，直接返回
                else:
                    logger.warning("LLM 废标检查返回非预期格式，降级使用正则检查")
            except Exception as e:
                logger.warning(f"LLM 废标检查失败: {e}，降级使用正则检查")

        # ---- 策略 B: 正则保底（仅 LLM 失败时使用） ----
        danger_patterns = [
            (r"(?i)(投标无效|废标|否决投标)", "内容中包含废标相关术语"),
            (r"(?i)(无.*资质|不具备.*条件|不符合.*要求)", "内容中可能存在否定性资格描述"),
            (r"(?i)(无法满足|不能满足|不响应)", "内容中可能存在对要求的否定响应"),
        ]

        for pattern, desc in danger_patterns:
            matches = re.findall(pattern, all_content)
            if matches and len(matches) > 2:
                issues.append(ReviewIssue(
                    chapter_id="*",
                    severity="warning",
                    issue_type="rejection_involved",
                    description=f"检测到可能的废标风险: {desc} (出现 {len(matches)} 次)",
                    suggestion="请人工检查这些上下文是否构成废标风险",
                ))

        for item in rejection_items[:5]:
            keywords = item.description[:10]
            if keywords and keywords in all_content:
                issues.append(ReviewIssue(
                    chapter_id="*",
                    severity="warning",
                    issue_type="rejection_involved",
                    description=f"废标项关键词出现在正文中: {keywords}...",
                    suggestion="请确认该处描述不会触发废标条件",
                ))

        return issues

    # ============================================================
    #  空章节检查
    # ============================================================

    def _check_empty_chapters(self, outline: BidOutline) -> List[ReviewIssue]:
        """检查是否有空章节

        商务标子章节（如 1.1 资格条件响应表、2.1 投标函）是目录骨架节点：
        其实际内容由父章的模板文本承载，表格/函件在 Step 6 从 Step 1
        提取的招标表格替换并填充。因此只要父章有内容，这些子章节不视为
        空章节，避免误报并触发 LLM 对表格做无意义补写。
        """
        issues = []
        parent_content = {}
        parent_modes = {}
        for ch in outline.chapters:
            if ch.id.isdigit():
                parent_content[ch.id] = ch.generated_content
                parent_modes[ch.id] = get_chapter_edit_mode(ch.title)
        for ch in outline.flatten():
            if not ch.generated_content.strip():
                parent_id = ch.id.split(".")[0]
                parent_text = parent_content.get(parent_id, "").strip()
                if "." in ch.id and parent_text:
                    if (
                        ch.chapter_type == ChapterType.BUSINESS
                        or parent_modes.get(parent_id)
                        == ChapterEditMode.RESTRUCTURE
                    ):
                        # 商务骨架由父章模板承载；重构章的旧模板
                        # 子节也不再是必须单独生成的内容单元。
                        continue
                    # 模板容器标题自身可能没有独立正文，内容在父章实际文本中；
                    # 只要父章文本出现该子标题，就视为该小节非空，避免误报。
                    heading_present = any(
                        _heading_match_token(text) in _heading_match_token(parent_text)
                        for text in (ch.title, ch.template_original_title)
                        if text and _heading_match_token(text)
                    )
                    if heading_present:
                        continue
                issues.append(ReviewIssue(
                    chapter_id=ch.id,
                    severity="error",
                    issue_type="style",
                    description=f"章节 {ch.id} {ch.title} 内容为空",
                    suggestion=f"需要撰写该章节内容（目标 {ch.word_count_target:,} 字）",
                ))
        return issues

    # ============================================================
    #  章节编号检查
    # ============================================================

    def _check_chapter_numbering(self, outline: BidOutline) -> List[ReviewIssue]:
        """检查章节编号是否符合规范"""
        issues = []
        tech_chapters = [c for c in outline.chapters if c.chapter_type.value == "technical"]

        for ch in tech_chapters:
            try:
                ch_num = int(ch.id)
                if ch_num < 3:
                    issues.append(ReviewIssue(
                        chapter_id=ch.id,
                        severity="error",
                        issue_type="style",
                        description=f"技术标章节 {ch.id} 编号应 >= 3（技术标从第三章开始）",
                        suggestion=f"将技术标章节编号调整为 3 起",
                    ))
            except ValueError:
                pass

        return issues

    def _check_demand_understanding_scoring_coverage(
        self,
        outline: BidOutline,
        criteria: List[ScoringCriterion],
    ) -> List[ReviewIssue]:
        """确保“需求理解”章覆盖名称相同评分项的具体评分维度。

        评分大类可能是“技术方案”，其小评分标题按结构规则放在第四章；
        但模板另有“需求理解”一级章时，该章正文仍必须覆盖服务定位、预期
        目标、重点难点及应对/改进措施，不能只依赖第四章的全局命中。
        """
        demand_chapter = next(
            (chapter for chapter in outline.chapters if "需求理解" in chapter.title),
            None,
        )
        if demand_chapter is None:
            return []
        content = _chapter_effective_content(demand_chapter)
        issues = []
        for criterion in criteria:
            criterion_text = " ".join((
                criterion.name or "", criterion.description or ""
            ))
            if not any(key in criterion_text for key in ("需求理解", "重点难点")):
                continue
            groups = []
            for token in ("服务定位", "预期目标", "重点", "难点"):
                if token in criterion.description:
                    groups.append((token,))
            if "应对" in criterion.description or "改进措施" in criterion.description:
                groups.append(("应对", "改进措施"))
            if not groups:
                groups.append((criterion.name,))
            missing = [
                "/".join(group) for group in groups
                if not any(token and token in content for token in group)
            ]
            if missing:
                issues.append(ReviewIssue(
                    chapter_id=demand_chapter.id,
                    severity="error",
                    issue_type="demand_scoring_coverage",
                    description=(
                        f"需求理解章未完整覆盖评分项 [{criterion.id}] "
                        f"{criterion.name}：缺少 {', '.join(missing)}"
                    ),
                    suggestion=(
                        "在需求理解章既有结构内补充服务定位、预期目标、"
                        "重点难点分析及应对或改进措施，不新增评分标题。"
                    ),
                ))
        return issues

    # ============================================================
    #  辅助
    # ============================================================

    def _count_template_words(self, outline: BidOutline) -> int:
        """估算模板内容字数。

        历史实现硬编码返回 5000，但：
        1. 商务章等模板内容已在 Step 4 载入 generated_content，flatten
           统计已包含它们，再凭空加 5000 属于双重计数；
        2. 未被章节载入的模板表格/函件字数无法从 outline 得知，凭空估算
           可能掩盖真实字数缺口，导致"缺字仍达标"。
        因此不虚增；若将来需要计入模板表格字数，应显式传入模板统计。
        """
        return 0