"""
从 run_context_v3.json 中提取 top10 帖子并进行多模态解析

功能：
1. 读取 run_context_v3.json
2. 提取所有帖子，按 final_score 排序，取 top10
3. 使用 multimodal_extractor 进行图片内容解析
4. 保存结果到独立的 JSON 文件
"""

import asyncio
import json
import os
import sys
from pathlib import Path
from typing import Optional

# 导入必要的模块
from knowledge_search_traverse import Post
from multimodal_extractor import extract_all_posts


def load_run_context(json_path: str) -> dict:
    """加载 run_context_v3.json 文件"""
    with open(json_path, 'r', encoding='utf-8') as f:
        return json.load(f)


def extract_all_posts_from_context(context_data: dict) -> list[dict]:
    """从 context 数据中提取所有帖子"""
    all_posts = []

    # 遍历所有轮次
    for round_data in context_data.get('rounds', []):
        # 遍历搜索结果
        for search_result in round_data.get('search_results', []):
            # 遍历帖子列表
            for post in search_result.get('post_list', []):
                all_posts.append(post)

    return all_posts


def filter_and_sort_top10(posts: list[dict]) -> list[dict]:
    """过滤并排序，获取 final_score top10 的帖子"""
    # 过滤掉 final_score 为 null 的帖子
    valid_posts = [p for p in posts if p.get('final_score') is not None]

    # 按 final_score 降序排序
    sorted_posts = sorted(valid_posts, key=lambda x: x.get('final_score', 0), reverse=True)

    # 取前10个
    top10 = sorted_posts[:10]

    return top10


def convert_to_post_objects(post_dicts: list[dict]) -> list[Post]:
    """将字典数据转换为 Post 对象"""
    post_objects = []

    for post_dict in post_dicts:
        # 创建 Post 对象，设置默认 type="normal"
        post = Post(
            note_id=post_dict.get('note_id', ''),
            note_url=post_dict.get('note_url', ''),
            title=post_dict.get('title', ''),
            body_text=post_dict.get('body_text', ''),
            type='normal',  # 默认值，因为原数据缺少此字段
            images=post_dict.get('images', []),
            video=post_dict.get('video', ''),
            interact_info=post_dict.get('interact_info', {}),
        )
        post_objects.append(post)

    return post_objects


def save_extraction_results(results: dict, output_path: str, top10_posts: list[dict]):
    """保存多模态解析结果到 JSON 文件"""
    # 构建输出数据
    output_data = {
        'total_extracted': len(results),
        'extraction_results': []
    }

    # 遍历每个解析结果
    for note_id, extraction in results.items():
        # 找到对应的原始帖子数据
        original_post = None
        for post in top10_posts:
            if post.get('note_id') == note_id:
                original_post = post
                break

        # 构建结果条目
        result_entry = {
            'note_id': extraction.note_id,
            'note_url': extraction.note_url,
            'title': extraction.title,
            'body_text': extraction.body_text,
            'type': extraction.type,
            'extraction_time': extraction.extraction_time,
            'final_score': original_post.get('final_score') if original_post else None,
            'images': [
                {
                    'image_index': img.image_index,
                    'original_url': img.original_url,
                    'description': img.description,
                    'extract_text': img.extract_text
                }
                for img in extraction.images
            ]
        }

        output_data['extraction_results'].append(result_entry)

    # 保存到文件
    with open(output_path, '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_path}")


async def main(context_file_path: str, output_file_path: str):
    """主函数"""
    print("=" * 80)
    print("多模态解析 - Top10 帖子")
    print("=" * 80)

    # 1. 加载数据
    print(f"\n📂 加载文件: {context_file_path}")
    context_data = load_run_context(context_file_path)

    # 2. 提取所有帖子
    print(f"\n🔍 提取所有帖子...")
    all_posts = extract_all_posts_from_context(context_data)
    print(f"   共找到 {len(all_posts)} 个帖子")

    # 3. 过滤并排序获取 top10
    print(f"\n📊 筛选 top10 帖子...")
    top10_posts = filter_and_sort_top10(all_posts)
    print(f"   Top10 帖子得分范围: {top10_posts[-1].get('final_score')} ~ {top10_posts[0].get('final_score')}")

    # 打印 top10 列表
    print("\n   Top10 帖子列表:")
    for i, post in enumerate(top10_posts, 1):
        print(f"   {i}. [{post.get('final_score')}] {post.get('title')[:40]}... ({post.get('note_id')})")

    # 4. 转换为 Post 对象
    print(f"\n🔄 转换为 Post 对象...")
    post_objects = convert_to_post_objects(top10_posts)
    print(f"   成功转换 {len(post_objects)} 个 Post 对象")

    # 5. 进行多模态解析
    print(f"\n🖼️  开始多模态图片内容解析...")
    print(f"   （并发限制: 5, 每张图片最多 10 张）")
    extraction_results = await extract_all_posts(post_objects, max_concurrent=5)

    # 6. 保存结果
    print(f"\n💾 保存解析结果...")
    save_extraction_results(extraction_results, output_file_path, top10_posts)

    print("\n" + "=" * 80)
    print("✅ 处理完成！")
    print("=" * 80)


if __name__ == "__main__":
    # 默认路径配置
    DEFAULT_CONTEXT_FILE = "input/test_case/output/knowledge_search_traverse/20251114/005215_b1/run_context_v3.json"
    DEFAULT_OUTPUT_FILE = "input/test_case/output/knowledge_search_traverse/20251114/005215_b1/multimodal_extraction_top10.json"

    # 可以通过命令行参数覆盖
    context_file = sys.argv[1] if len(sys.argv) > 1 else DEFAULT_CONTEXT_FILE
    output_file = sys.argv[2] if len(sys.argv) > 2 else DEFAULT_OUTPUT_FILE

    # 检查文件是否存在
    if not os.path.exists(context_file):
        print(f"❌ 错误: 文件不存在 - {context_file}")
        sys.exit(1)

    # 运行主函数
    asyncio.run(main(context_file, output_file))