"""
内容解析结果搜索工具 - 根据关键词搜索视频标题和标题的解析结果

用于 Agent 执行时根据关键词搜索视频内容及其解析结果。
"""
import asyncio
import json
import os
from typing import Any, Dict, List, Optional

import httpx

from agent.tools import tool, ToolResult

# API 配置
CONTENT_DECONSTRUCTION_BASE_URL = os.getenv(
    "CONTENT_DECONSTRUCTION_BASE_URL", "http://api.piaoquantv.com"
)
DEFAULT_TIMEOUT = 30.0


async def _call_content_deconstruction_api(
    keywords: List[str],
) -> Optional[Dict[str, List[Dict[str, Any]]]]:
    """调用内容解析结果搜索 API，返回结果字典。"""
    url = f"{CONTENT_DECONSTRUCTION_BASE_URL.rstrip('/')}/supply-demand-engine-service/content/queryContentDeconstructionResultByKeywords"
    payload = {"keywords": keywords}

    try:
        async with httpx.AsyncClient(timeout=DEFAULT_TIMEOUT) as client:
            resp = await client.post(
                url,
                json=payload,
                headers={"Content-Type": "application/json"},
            )
            resp.raise_for_status()
            data = resp.json()
    except httpx.HTTPStatusError as e:
        raise RuntimeError(
            f"API 请求失败: {e.response.status_code} - {e.response.text[:200]}"
        )
    except Exception as e:
        raise RuntimeError(f"请求异常: {str(e)}")

    # 解析响应格式: {'code': 0, 'msg': 'success', 'data': {...}, 'success': True}
    if isinstance(data, dict):
        # 检查 code 字段
        code = data.get("code", 0)
        if code != 0:
            msg = data.get("msg", "未知错误")
            raise RuntimeError(f"API 返回错误码: {code}, 消息: {msg}")

        # 获取 data 字段
        result_data = data.get("data", {})
        if isinstance(result_data, dict):
            return result_data

        return {}

    return {}


@tool(
    description="根据关键词搜索视频标题和标题的解析结果。支持传入多个关键词，自动过滤掉 type 为'选题'的 description，统计每个 contentId 对应的关键词数量，并返回最高匹配比例（匹配最多关键词的 contentId 占所有关键词的比例）。",
    display={
        "zh": {
            "name": "内容解析结果搜索",
            "params": {
                "keywords": "关键词列表，例如：['食用', '禁忌']",
            },
        },
    },
)
async def query_content_deconstruction_by_keywords(
    keywords: List[str],
) -> ToolResult:
    """
    根据关键词搜索视频标题和标题的解析结果。
    
    处理流程：
    1. 过滤掉 description 中 type 为 "选题" 的项
    2. 统计每个 contentId 对应的关键词数量
    3. 计算并返回最高匹配比例（匹配最多关键词的 contentId 占所有关键词的比例）

    Args:
        keywords: 关键词列表，例如：['食用', '禁忌']

    Returns:
        ToolResult: 包含过滤后的结果、contentId 统计信息、最高匹配比例等
    """
    # 验证关键词列表
    if not keywords:
        return ToolResult(
            title="内容解析结果搜索失败",
            output="",
            error="关键词列表不能为空",
        )

    if not isinstance(keywords, list):
        return ToolResult(
            title="内容解析结果搜索失败",
            output="",
            error=f"关键词必须是列表类型，当前类型为: {type(keywords).__name__}",
        )

    # 过滤空字符串
    keywords = [kw.strip() for kw in keywords if kw and kw.strip()]
    if not keywords:
        return ToolResult(
            title="内容解析结果搜索失败",
            output="",
            error="关键词列表中没有有效的关键词",
        )

    try:
        results = await _call_content_deconstruction_api(keywords=keywords)
    except RuntimeError as e:
        return ToolResult(
            title="内容解析结果搜索失败",
            output="",
            error=str(e),
        )

    if not results:
        return ToolResult(
            title="内容解析结果搜索",
            output=json.dumps(
                {
                    "max_content_id_ratio": 0.0,
                },
                ensure_ascii=False,
                indent=2,
            ),
        )

    # 1. 过滤 description，去掉 type 为 "选题" 的项
    filtered_results = {}
    for keyword, videos in results.items():
        if not isinstance(videos, list):
            continue
        
        filtered_videos = []
        for video in videos:
            if not isinstance(video, dict):
                continue
            
            # 复制视频信息
            filtered_video = video.copy()
            
            # 过滤 description，去掉 type 为 "选题" 的项
            if "description" in filtered_video and isinstance(filtered_video["description"], list):
                filtered_video["description"] = [
                    desc for desc in filtered_video["description"]
                    if isinstance(desc, dict) and desc.get("type") != "选题"
                ]
            
            # 如果过滤后还有 description，说明该词匹配到了该 contentId
            if filtered_video.get("description") and len(filtered_video["description"]) > 0:
                filtered_videos.append(filtered_video)
        
        if filtered_videos:
            filtered_results[keyword] = filtered_videos

    # 2. 统计每个 contentId 对应的关键词数量
    content_id_to_keywords: Dict[str, set] = {}
    for keyword, videos in filtered_results.items():
        for video in videos:
            content_id = video.get("contentId")
            if content_id:
                if content_id not in content_id_to_keywords:
                    content_id_to_keywords[content_id] = set()
                content_id_to_keywords[content_id].add(keyword)

    # 3. 计算每个 contentId 对应最多词的比例
    max_keyword_count = 0
    max_content_id = None
    if content_id_to_keywords:
        for content_id, matched_keywords in content_id_to_keywords.items():
            keyword_count = len(matched_keywords)
            if keyword_count > max_keyword_count:
                max_keyword_count = keyword_count
                max_content_id = content_id
    
    # 计算比例（匹配到的关键词数 / 总关键词数）
    max_ratio = max_keyword_count / len(keywords) if keywords else 0.0

    # 构建输出结果，只返回最高匹配度
    output_data = {
        "max_content_id_ratio": round(max_ratio * 100, 2),  # 转换为百分比，保留2位小数
    }

    output = json.dumps(output_data, ensure_ascii=False, indent=2)
    return ToolResult(
        title=f"内容解析结果搜索 - {len(keywords)} 个关键词",
        output=output,
        long_term_memory=f"检索到内容解析结果，关键词: {', '.join(keywords)}，最高匹配比例: {max_ratio * 100:.2f}%",
    )


if __name__ == '__main__':
    res = asyncio.run(query_content_deconstruction_by_keywords(['食用', '禁忌']))
    print(res)