"""
制作案例 → 制作需求 → 内容树节点匹配

流程：
1a. 逐帖子分析（带图片），提炼每个帖子的制作需求（并发）
1b. 合并去重相似需求，保留 case_id 溯源
2.  按合并后的需求语义搜索内容树 + 取父子节点
3.  每个需求独立过 LLM 挂载决策（并发）
4.  输出 case → demand → node 关系表 + 可视化
"""

import asyncio
import json
import os
import re
import sys
from pathlib import Path

import httpx

# 添加项目根目录
sys.path.insert(0, str(Path(__file__).parent.parent.parent))

from dotenv import load_dotenv
load_dotenv()

from agent.llm.qwen import qwen_llm_call

# ===== 配置 =====
BASE_DIR = Path(__file__).parent
CONTENT_TREE_BASE = "http://8.147.104.190:8001"
CATEGORY_TREE_PATH = BASE_DIR / "prompts" / "category_tree.json"
DEFAULT_MODEL = "qwen-plus"
VISION_MODEL = "qwen-vl-max"
SOURCE_TYPES = ["实质", "形式", "意图"]

# 加载本地分类树
_CATEGORY_TREE_CACHE = None

def load_category_tree() -> dict:
    """加载本地分类树（缓存）"""
    global _CATEGORY_TREE_CACHE
    if _CATEGORY_TREE_CACHE is None:
        with open(CATEGORY_TREE_PATH, "r", encoding="utf-8") as f:
            _CATEGORY_TREE_CACHE = json.load(f)
    return _CATEGORY_TREE_CACHE


def collect_all_nodes(node: dict, nodes: list, parent_path: str = ""):
    """递归收集所有节点，展平树结构"""
    if "id" in node:
        node_copy = {
            "entity_id": node["id"],
            "name": node["name"],
            "path": node.get("path", parent_path),
            "source_type": node.get("source_type"),
            "description": node.get("description") or "",
            "level": node.get("level"),
            "parent_id": node.get("parent_id"),
            "element_count": node.get("element_count", 0),
        }
        nodes.append(node_copy)

    if "children" in node:
        current_path = node.get("path", parent_path)
        for child in node["children"]:
            collect_all_nodes(child, nodes, current_path)


def search_local_tree(query: str, source_type: str, top_k: int = 5) -> list:
    """在本地分类树中搜索节点"""
    tree = load_category_tree()
    all_nodes = []
    collect_all_nodes(tree, all_nodes)

    # 过滤：只保留指定维度
    filtered = [n for n in all_nodes if n.get("source_type") == source_type]

    # 简单文本匹配打分
    query_lower = query.lower()
    scored = []
    for node in filtered:
        name = node["name"].lower()
        desc = node["description"].lower()

        score = 0.0
        # 名称完全匹配
        if query_lower == name:
            score = 1.0
        # 名称包含
        elif query_lower in name:
            score = 0.8
        # 描述包含
        elif query_lower in desc:
            score = 0.5
        # 名称被包含（反向）
        elif name in query_lower:
            score = 0.6

        if score > 0:
            node["score"] = score
            node["entity_type"] = "category"  # 本地树都是 category
            scored.append(node)

    # 按分数排序，取 top_k
    scored.sort(key=lambda x: x["score"], reverse=True)
    return scored[:top_k]


# ===== Prompt 加载 =====

def load_prompt(filename: str) -> dict:
    """加载 .prompt 文件，解析 frontmatter 和 $role$ 分段"""
    path = BASE_DIR / "prompts" / filename
    text = path.read_text(encoding="utf-8")

    config = {}
    if text.startswith("---"):
        _, fm, text = text.split("---", 2)
        for line in fm.strip().splitlines():
            if ":" in line:
                k, v = line.split(":", 1)
                k, v = k.strip(), v.strip()
                if v.replace(".", "", 1).isdigit():
                    v = float(v) if "." in v else int(v)
                config[k] = v

    messages = []
    parts = re.split(r'^\$(\w+)\$\s*$', text.strip(), flags=re.MULTILINE)
    for i in range(1, len(parts), 2):
        role = parts[i].strip()
        content = parts[i + 1].strip() if i + 1 < len(parts) else ""
        messages.append({"role": role, "content": content})

    return {"config": config, "messages": messages}


def render_messages(prompt_data: dict, variables: dict) -> list[dict]:
    """用变量替换 prompt 模板中的 {var} 占位符"""
    rendered = []
    for msg in prompt_data["messages"]:
        content = msg["content"]
        for k, v in variables.items():
            content = content.replace(f"{{{k}}}", str(v))
        rendered.append({"role": msg["role"], "content": content})
    return rendered


def parse_json_response(content: str) -> list | dict:
    """清理 LLM 输出中的 markdown 包裹并解析 JSON"""
    content = content.strip()
    if content.startswith("```"):
        content = content.split("\n", 1)[1]
        content = content.rsplit("```", 1)[0]

    try:
        return json.loads(content)
    except json.JSONDecodeError as e:
        # 尝试自动修复：替换字符串中的未转义引号
        print(f"\n[JSON 解析错误] 尝试自动修复...")

        # 简单修复：把字符串值中的单独双引号替换为单引号
        import re
        # 匹配 "key": "value with "quote" inside"
        # 这个正则会找到字符串值中间的引号并替换
        fixed = re.sub(r'("(?:evidence|description|demand_name)":\s*")([^"]*)"([^"]*)"([^"]*")',
                      r'\1\2\'\3\4', content)

        try:
            return json.loads(fixed)
        except json.JSONDecodeError:
            # 修复失败，打印错误位置
            start = max(0, e.pos - 100)
            end = min(len(content), e.pos + 100)
            print(f"\n[JSON 解析错误] 位置 {e.pos}:")
            print(f"...{content[start:end]}...")
            print(f"\n完整内容已保存到 json_error.txt")
            with open("json_error.txt", "w", encoding="utf-8") as f:
                f.write(content)
            raise


# ===== 内容树 API =====

async def search_content_tree(client: httpx.AsyncClient, query: str, source_type: str, top_k: int = 5) -> list:
    params = {
        "q": query, "source_type": source_type, "entity_type": "all",
        "top_k": top_k, "use_description": "true",
        "include_ancestors": "false", "descendant_depth": 0,
    }
    resp = await client.get(f"{CONTENT_TREE_BASE}/api/agent/search", params=params)
    resp.raise_for_status()
    return resp.json().get("results", [])


async def get_category_tree(client: httpx.AsyncClient, entity_id: int, source_type: str) -> dict:
    params = {
        "source_type": source_type, "include_ancestors": "true", "descendant_depth": 1,
    }
    resp = await client.get(f"{CONTENT_TREE_BASE}/api/agent/search/category/{entity_id}", params=params)
    resp.raise_for_status()
    return resp.json()


# ===== Step 1a：逐帖子提需求（支持图片） =====

def build_case_content(case: dict) -> list[dict]:
    """
    构造单个帖子的多模态消息内容。
    返回 OpenAI vision 格式的 content 数组。
    """
    parts = []

    # 文本部分（兼容多种字段名）
    title = case.get("title") or case.get("video_title") or case.get("post_title", "未知")
    text_lines = [f"## 案例：{title}"]
    text_lines.append(f"来源：{case.get('source', '')}")
    if case.get("user_input"):
        text_lines.append(f"用户输入：{json.dumps(case['user_input'], ensure_ascii=False)}")
    if case.get("output_description"):
        text_lines.append(f"输出效果：{case['output_description']}")
    if case.get("key_findings"):
        text_lines.append(f"关键发现：{case['key_findings']}")

    parts.append({"type": "text", "text": "\n".join(text_lines)})

    # 图片部分（兼容多种字段名）
    images = case.get("images") or case.get("effect_images", [])
    for img_url in images[:4]:  # 最多4张图，控制 token
        parts.append({
            "type": "image_url",
            "image_url": {"url": img_url},
        })

    return parts


async def extract_demands_for_case(case: dict) -> dict:
    """对单个帖子提取需求"""
    prompt_data = load_prompt("step1_extract_demands.prompt")
    model = prompt_data["config"].get("model", VISION_MODEL)
    temperature = prompt_data["config"].get("temperature", 0.3)

    case_content = build_case_content(case)
    has_images = any(p["type"] == "image_url" for p in case_content)

    # 如果没有图片，降级用文本模型省成本
    if not has_images:
        model = DEFAULT_MODEL
        # 纯文本模式：content 用字符串即可
        text_only = "\n".join(p["text"] for p in case_content if p["type"] == "text")
        messages = render_messages(prompt_data, {"case_content": text_only})
    else:
        # 多模态模式：user message 的 content 用数组
        messages = []
        for msg in prompt_data["messages"]:
            if msg["role"] == "user":
                # 把 prompt 模板文本放在图片前面
                template_text = msg["content"].replace("{case_content}", "")
                content = case_content.copy()
                if template_text.strip():
                    content.insert(0, {"type": "text", "text": template_text})
                messages.append({"role": "user", "content": content})
            else:
                messages.append(msg)

    try:
        result = await qwen_llm_call(messages, model=model, temperature=temperature)
        demands = parse_json_response(result["content"])
        case_id = case.get("case_id", 0)
        # 给每个需求打上 case_id
        for d in demands:
            d["source_case_id"] = case_id
        return {"case_id": case_id, "title": case.get("title", ""), "demands": demands}
    except Exception as e:
        case_id = case.get("case_id", 0)
        print(f"  [!] case {case_id} 提取失败: {e}")
        return {"case_id": case_id, "title": case.get("title", ""), "demands": [], "error": str(e)}


# ===== Step 1b：合并去重 =====

async def merge_demands(all_case_demands: list[dict]) -> list[dict]:
    """用 LLM 合并相似需求，超过30个时分批处理"""
    # 构造输入：展平所有 case 的 demands，标注来源
    flat = []
    for cd in all_case_demands:
        for d in cd["demands"]:
            flat.append({
                "case_id": cd["case_id"],
                "case_title": cd["title"],
                "demand_name": d["demand_name"],
                "description": d["description"],
                "search_keywords": d["search_keywords"],
                "evidence": d.get("evidence", ""),
            })

    if not flat:
        return []

    prompt_data = load_prompt("step1b_merge_demands.prompt")
    model = prompt_data["config"].get("model", DEFAULT_MODEL)
    temperature = prompt_data["config"].get("temperature", 0.3)

    # 分批处理：每批最多30个需求
    BATCH_SIZE = 30
    if len(flat) <= BATCH_SIZE:
        # 不需要分批
        all_demands_json = json.dumps(flat, ensure_ascii=False, indent=2)
        messages = render_messages(prompt_data, {"all_demands_json": all_demands_json})
        result = await qwen_llm_call(messages, model=model, temperature=temperature)
        merged = parse_json_response(result["content"])
        # 统一转换 source_case_ids 为字符串
        for m in merged:
            m["source_case_ids"] = [str(cid) for cid in m.get("source_case_ids", [])]
        return merged
    else:
        # 分批合并
        print(f"  需求数量 {len(flat)} 超过 {BATCH_SIZE}，分批合并...")
        batches = [flat[i:i + BATCH_SIZE] for i in range(0, len(flat), BATCH_SIZE)]
        batch_results = []

        for i, batch in enumerate(batches, 1):
            print(f"    批次 {i}/{len(batches)}: {len(batch)} 个需求")
            batch_json = json.dumps(batch, ensure_ascii=False, indent=2)
            messages = render_messages(prompt_data, {"all_demands_json": batch_json})
            result = await qwen_llm_call(messages, model=model, temperature=temperature)
            batch_merged = parse_json_response(result["content"])
            batch_results.extend(batch_merged)

        # 如果分批后的结果仍然很多，再做一次最终合并
        if len(batch_results) > BATCH_SIZE:
            print(f"  批次合并后仍有 {len(batch_results)} 个需求，进行最终合并...")
            final_json = json.dumps(batch_results, ensure_ascii=False, indent=2)
            messages = render_messages(prompt_data, {"all_demands_json": final_json})
            result = await qwen_llm_call(messages, model=model, temperature=temperature)
            final_merged = parse_json_response(result["content"])
            # 统一转换 source_case_ids 为字符串
            for m in final_merged:
                m["source_case_ids"] = [str(cid) for cid in m.get("source_case_ids", [])]
            return final_merged
        else:
            # 统一转换 source_case_ids 为字符串
            for m in batch_results:
                m["source_case_ids"] = [str(cid) for cid in m.get("source_case_ids", [])]
            return batch_results


# ===== Step 2：语义搜索 + 取父子节点 =====

async def step2_search_and_expand(demands: list[dict]) -> dict:
    """语义搜索本地分类树 + 取父子节点"""
    all_results = {}
    tree = load_category_tree()

    for demand in demands:
        name = demand["demand_name"]
        keywords = demand["search_keywords"]
        all_results[name] = {}

        for source_type in SOURCE_TYPES:
            nodes = []
            seen = set()

            for kw in keywords:
                # 使用本地搜索替代 API
                results = search_local_tree(kw, source_type, top_k=3)
                for r in results:
                    eid = r.get("entity_id")
                    if eid in seen:
                        continue
                    seen.add(eid)

                    node = {
                        "entity_id": eid,
                        "name": r.get("name", ""),
                        "entity_type": "category",
                        "score": r.get("score", 0),
                        "description": r.get("description", ""),
                        "path": r.get("path", ""),
                    }

                    # 本地树暂不支持动态取父子，先留空
                    node["ancestors"] = []
                    node["children"] = []

                    nodes.append(node)

            if nodes:
                all_results[name][source_type] = nodes

    return all_results


# ===== Step 3：逐需求挂载决策（并发） =====

def build_single_demand_context(demand: dict, nodes_by_dim: dict) -> str:
    parts = []
    parts.append(f"## 需求：{demand['demand_name']}")
    parts.append(f"描述：{demand['description']}")
    parts.append(f"来源帖子：case_id={demand.get('source_case_ids', [])}")
    if demand.get("evidence"):
        parts.append(f"数据依据：{demand['evidence']}")

    if not nodes_by_dim:
        parts.append("（未搜索到相关节点）")
        return "\n".join(parts)

    for source_type, nodes in nodes_by_dim.items():
        parts.append(f"\n### {source_type}维度匹配节点：")
        for n in nodes:
            line = f"- [{n['entity_type']}] entity_id={n['entity_id']}  \"{n['name']}\"  score={n['score']:.2f}"
            if n.get("description"):
                line += f"  描述: {n['description']}"
            parts.append(line)
            if n.get("ancestors"):
                path = " > ".join(a["name"] for a in n["ancestors"])
                parts.append(f"    父链: {path}")
            if n.get("children"):
                kids = ", ".join(c["name"] for c in n["children"][:10])
                parts.append(f"    子节点: {kids}")
    return "\n".join(parts)


async def mount_single_demand(demand: dict, nodes_by_dim: dict) -> dict:
    prompt_data = load_prompt("step3_mount_decision.prompt")
    model = prompt_data["config"].get("model", DEFAULT_MODEL)
    temperature = prompt_data["config"].get("temperature", 0.3)

    node_context = build_single_demand_context(demand, nodes_by_dim)
    messages = render_messages(prompt_data, {"node_context": node_context})

    result = await qwen_llm_call(messages, model=model, temperature=temperature, max_tokens=4096)

    # 解析结构化 JSON 输出
    try:
        decision = parse_json_response(result["content"])
    except Exception as e:
        print(f"  [!] 挂载决策解析失败 ({demand['demand_name']}): {e}")
        decision = {"demand_name": demand["demand_name"], "mounted_nodes": [], "notes": f"解析失败: {e}"}

    return {
        "demand_name": demand["demand_name"],
        "source_case_ids": demand.get("source_case_ids", []),
        "decision": decision,
    }


async def step3_mount_decisions(demands: list[dict], search_results: dict) -> list[dict]:
    tasks = []
    for demand in demands:
        nodes_by_dim = search_results.get(demand["demand_name"], {})
        tasks.append(mount_single_demand(demand, nodes_by_dim))
    return await asyncio.gather(*tasks)


# ===== 可视化：生成关系表 + HTML =====

def build_relation_table(all_case_demands: list[dict], merged_demands: list[dict], decisions: list[dict]) -> list[dict]:
    """构建 case → demand → node 关系表"""
    # 建立 demand_name → decision 的映射
    decision_map = {d["demand_name"]: d for d in decisions}

    rows = []
    for md in merged_demands:
        dn = md["demand_name"]
        case_ids = md.get("source_case_ids", [])
        dec = decision_map.get(dn, {})
        rows.append({
            "demand_name": dn,
            "description": md["description"],
            "source_case_ids": case_ids,
            "mount_decision": dec.get("decision", ""),
        })
    return rows


def generate_html_visualization(cases_data: dict, all_case_demands: list[dict],
                                 merged_demands: list[dict], decisions: list[dict],
                                 search_results: dict) -> str:
    """生成简洁的 case→demand 树状图，节点作为标签显示在 demand 框里"""
    # 构建完整的 case_map，兼容多种字段名
    case_map = {}
    for c in cases_data.get("cases", []):
        case_map[c["case_id"]] = {
            "title": c.get("title") or c.get("video_title") or c.get("post_title", ""),
            "images": c.get("images") or c.get("effect_images", []),
            "link": c.get("source_link") or c.get("video_url") or c.get("post_url", "")
        }

    # 构建 decision_map：demand_name → mounted_nodes
    decision_map = {}
    for d in decisions:
        dec = d.get("decision", {})
        if isinstance(dec, dict):
            decision_map[d["demand_name"]] = dec.get("mounted_nodes", [])
        else:
            decision_map[d["demand_name"]] = []

    nodes_js = []
    edges_js = []
    node_id = 0

    # 为每个 demand 创建节点，并为其来源的每个 case 创建独立的 case 节点
    for md in merged_demands:
        demand_id = node_id
        node_id += 1

        # 构建 demand 节点的显示内容
        dn = md["demand_name"]
        desc = md["description"][:100] + "..." if len(md["description"]) > 100 else md["description"]

        # 从挂载决策中获取最终选择的节点
        mounted = decision_map.get(dn, [])
        node_tags = [f"{n['name']}({n.get('source_type', '')})" for n in mounted]

        tags_html = " | ".join(node_tags) if node_tags else "无挂载节点"

        # demand 节点的 HTML 标签（包含挂载节点）
        demand_label = f"{dn}\n\n[挂载] {tags_html}"
        demand_title = f"{dn}\n\n{desc}\n\n挂载节点: {tags_html}"

        nodes_js.append({
            "id": demand_id,
            "label": demand_label,
            "title": demand_title,
            "group": "demand",
            "level": 1,
            "shape": "box",
            "font": {"size": 12}
        })

        # 为每个来源 case 创建独立的 case 节点
        for cid in md.get("source_case_ids", []):
            case_id = node_id
            node_id += 1

            # 类型转换：case_map 的 key 可能是字符串或整数
            cid_str = str(cid)
            case_info = case_map.get(cid_str) or case_map.get(cid, {"title": f"Case {cid}", "images": [], "link": ""})

            # label 只显示标题
            title_short = case_info['title'][:50] + "..." if len(case_info['title']) > 50 else case_info['title']
            case_label = f"Case {cid}\n{title_short}"

            # 构建带图片的 HTML tooltip（不含链接）
            img_html = ""
            if case_info['images']:
                img_url = case_info['images'][0]
                img_html = f'<img src="{img_url}" style="max-width:300px; max-height:200px; display:block; margin:10px 0;"/>'

            case_title = f'<div style="max-width:350px;"><b>Case {cid}: {case_info["title"]}</b>{img_html}<br/><i>点击节点查看原帖</i></div>'

            nodes_js.append({
                "id": case_id,
                "label": case_label,
                "title": case_title,
                "url": case_info['link'],  # 存储链接，用于点击事件
                "group": "case",
                "level": 0,
                "shape": "box"
            })

            # case → demand 边
            edges_js.append({"from": case_id, "to": demand_id})

    html = f"""<!DOCTYPE html>
<html><head>
<meta charset="utf-8">
<title>Case → Demand 树状图</title>
<script src="https://unpkg.com/vis-network/standalone/umd/vis-network.min.js"></script>
<style>
  body {{ margin: 0; font-family: sans-serif; }}
  #graph {{ width: 100%; height: 90vh; border: 1px solid #ddd; }}
  #legend {{ padding: 10px; display: flex; gap: 20px; align-items: center; background: #f5f5f5; }}
  .legend-item {{ display: flex; align-items: center; gap: 5px; }}
  .dot {{ width: 14px; height: 14px; border-radius: 3px; }}
</style>
</head><body>
<div id="legend">
  <b>树状图：</b>
  <span class="legend-item"><span class="dot" style="background:#97C2FC"></span> 帖子 (Case)</span>
  <span class="legend-item"><span class="dot" style="background:#FFB366"></span> 需求 (Demand + 匹配节点)</span>
</div>
<div id="graph"></div>
<script>
var nodesData = {json.dumps(nodes_js, ensure_ascii=False)};
var edgesData = {json.dumps(edges_js, ensure_ascii=False)};

// 将 title 字符串转为 DOM 元素，让 vis.js 渲染 HTML
nodesData.forEach(function(node) {{
    if (node.title && typeof node.title === 'string' && node.title.includes('<')) {{
        var container = document.createElement('div');
        container.innerHTML = node.title;
        node.title = container;
    }}
}});

var nodes = new vis.DataSet(nodesData);
var edges = new vis.DataSet(edgesData);
var container = document.getElementById("graph");
var data = {{ nodes: nodes, edges: edges }};
var options = {{
  layout: {{
    hierarchical: {{
      direction: "UD",
      sortMethod: "directed",
      levelSeparation: 180,
      nodeSpacing: 100
    }}
  }},
  groups: {{
    case: {{
      shape: "box",
      color: {{ background: "#97C2FC", border: "#2B7CE9" }},
      font: {{ size: 11 }},
      widthConstraint: {{ minimum: 200, maximum: 350 }}
    }},
    demand: {{
      shape: "box",
      color: {{ background: "#FFB366", border: "#FF8C00" }},
      font: {{ size: 12 }},
      widthConstraint: {{ minimum: 200, maximum: 400 }}
    }}
  }},
  edges: {{ arrows: "to", smooth: {{ type: "cubicBezier" }} }},
  physics: {{ enabled: false }},
  interaction: {{ hover: true, tooltipDelay: 100 }}
}};
var network = new vis.Network(container, data, options);

// 点击 case 节点跳转到原帖
network.on("click", function(params) {{
    if (params.nodes.length > 0) {{
        var nodeId = params.nodes[0];
        var nodeData = nodes.get(nodeId);
        if (nodeData.url) {{
            window.open(nodeData.url, '_blank');
        }}
    }}
}});
</script>
</body></html>"""
    return html


# ===== 主流程 =====

async def run(cases_path: str):
    with open(cases_path, "r", encoding="utf-8") as f:
        cases_data = json.load(f)

    cases = cases_data.get("cases", [])
    topic = cases_data.get("topic", "未知主题")

    # 过滤：只保留有图片的 case（兼容多种字段名）
    def has_images(case):
        imgs = case.get("images") or case.get("effect_images") or []
        return len(imgs) > 0

    cases_with_images = [c for c in cases if has_images(c)]
    skipped = len(cases) - len(cases_with_images)

    print("=" * 60)
    print(f"输入: {cases_path}")
    print(f"主题: {topic} (总计 {len(cases)} 个案例)")
    if skipped > 0:
        print(f"过滤: 跳过 {skipped} 个纯视频案例，保留 {len(cases_with_images)} 个图文案例")
    print("=" * 60)

    if not cases_with_images:
        print("\n错误: 没有图文案例可处理")
        return

    # Step 1a: 逐帖子提需求（并发）
    print(f"\n第 1a 步：逐帖子提取需求（{len(cases_with_images)} 个并发）...")
    tasks = [extract_demands_for_case(case) for case in cases_with_images]
    all_case_demands = await asyncio.gather(*tasks)

    total_raw = sum(len(cd["demands"]) for cd in all_case_demands)
    for cd in all_case_demands:
        n = len(cd["demands"])
        names = ", ".join(d["demand_name"] for d in cd["demands"][:3])
        suffix = "..." if n > 3 else ""
        print(f"  Case {cd['case_id']}: {n} 个需求 [{names}{suffix}]")
    print(f"  共提取 {total_raw} 个原始需求")

    # Step 1b: 合并去重
    print(f"\n第 1b 步：合并去重...")
    merged_demands = await merge_demands(all_case_demands)
    print(f"  合并后 {len(merged_demands)} 个需求：")
    for i, md in enumerate(merged_demands, 1):
        print(f"  {i}. {md['demand_name']} (来自 case {md.get('source_case_ids', [])})")

    # Step 2: 搜索节点
    print(f"\n第 2 步：语义搜索内容树 + 获取父子节点...")
    search_results = await step2_search_and_expand(merged_demands)
    for dn, dims in search_results.items():
        total = sum(len(ns) for ns in dims.values())
        print(f"  [{dn}] {total} 个节点")

    # Step 3: 挂载决策（并发）
    print(f"\n第 3 步：LLM 挂载决策（{len(merged_demands)} 个需求并发）...")
    decisions = await step3_mount_decisions(merged_demands, search_results)
    for d in decisions:
        print(f"\n{'─' * 40}")
        print(f"【{d['demand_name']}】(来自 case {d['source_case_ids']})")
        print(d["decision"])

    # 构建关系表
    relation_table = build_relation_table(all_case_demands, merged_demands, decisions)

    # 构建 case 信息映射（用于可视化）
    # 统一使用字符串作为 key，避免类型不匹配
    case_info_map = {}
    for c in cases_with_images:
        case_info_map[str(c["case_id"])] = {
            "title": c.get("title") or c.get("video_title") or c.get("post_title", ""),
            "images": c.get("images") or c.get("effect_images", []),
            "link": c.get("source_link") or c.get("video_url") or c.get("post_url", "")
        }

    # 保存结果
    output_dir = Path(cases_path).parent
    output_file = output_dir / "match_nodes_result.json"
    output_data = {
        "topic": topic,
        "case_info": case_info_map,  # 新增：保存 case 信息
        "per_case_demands": [
            {"case_id": cd["case_id"], "title": cd["title"],
             "demands": [d["demand_name"] for d in cd["demands"]]}
            for cd in all_case_demands
        ],
        "merged_demands": merged_demands,
        "search_results": search_results,
        "mount_decisions": decisions,
        "relation_table": relation_table,
    }
    with open(output_file, "w", encoding="utf-8") as f:
        json.dump(output_data, f, ensure_ascii=False, indent=2)
    print(f"\n结果已保存到: {output_file}")

    # 生成可视化
    html = generate_html_visualization(cases_data, all_case_demands, merged_demands, decisions, search_results)
    html_file = output_dir / "match_nodes_graph.html"
    with open(html_file, "w", encoding="utf-8") as f:
        f.write(html)
    print(f"可视化已保存到: {html_file}")


if __name__ == "__main__":
    if len(sys.argv) < 2:
        print("用法: python match_nodes.py <cases.json 路径>")
        print("示例: python match_nodes.py outputs/midjourney_0/02_cases.json")
        sys.exit(1)

    os.environ.setdefault("no_proxy", "*")
    asyncio.run(run(sys.argv[1]))