#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
批量运行脚本解构工作流 V2 (ScriptWorkflowV2)。

读取 examples/demo.json 中的视频列表，
将每条里的 video / channel_content_id 传入 ScriptWorkflowV2，
并将解构结果逐条写入 examples/output_demo_script_v2.json（增量写入）。
"""

import json
import sys
from datetime import datetime
from pathlib import Path
from typing import Dict, Any, List

# 添加项目根目录到路径
project_root = Path(__file__).parent.parent
sys.path.insert(0, str(project_root))

from src.workflows.script_workflow_v2 import ScriptWorkflowV2
from src.utils.logger import get_logger

logger = get_logger(__name__)


def load_json(path: Path):
    """通用 JSON 读取，支持列表或字典。"""
    if not path.exists():
        return None
    with path.open("r", encoding="utf-8") as f:
        return json.load(f)


def save_json(path: Path, data) -> None:
    """安全写入 JSON（先写临时文件，再替换）。"""
    tmp_path = path.with_suffix(".tmp")
    with tmp_path.open("w", encoding="utf-8") as f:
        json.dump(data, f, ensure_ascii=False, indent=2)
    tmp_path.replace(path)


def main() -> None:
    base_dir = Path(__file__).parent
    input_path = base_dir / "demo.json"
    output_path = base_dir / "output_demo_script_v2.json"

    if not input_path.exists():
        raise FileNotFoundError(f"找不到输入文件: {input_path}")

    # 读取 demo.json（为一个列表）
    raw_list = load_json(input_path)
    if not isinstance(raw_list, list):
        raise ValueError(f"demo.json 格式错误，应为列表，实际类型: {type(raw_list)}")

    # 读取已有输出，支持增量
    output_data = load_json(output_path)
    if not output_data:
        output_data = {
            "timestamp": datetime.now().strftime("%Y%m%d_%H%M%S"),
            "total": 0,
            "success_count": 0,
            "fail_count": 0,
            "results": [],
        }

    existing_results: List[Dict[str, Any]] = output_data.get("results", []) or []
    # 用 channel_content_id + video URL 去重，避免重复处理
    processed_keys = {
        f"{item.get('video_data', {}).get('channel_content_id','')}|"
        f"{item.get('video_data', {}).get('video','')}"
        for item in existing_results
    }

    workflow = ScriptWorkflowV2()

    for item in raw_list:
        video_data = item or {}
        channel_content_id = video_data.get("channel_content_id", "")
        video_url = video_data.get("video", "")

        key = f"{channel_content_id}|{video_url}"
        if key in processed_keys:
            logger.info(f"已处理过该视频，跳过: {key}")
            continue

        logger.info(
            f"处理视频: channel_content_id={channel_content_id} title={video_data.get('title','')}"
        )

        try:
            # ScriptWorkflowV2 只需要 video 和 channel_content_id
            script_input = {
                "video": video_url,
                "channel_content_id": channel_content_id,
            }
            script_result = workflow.invoke(script_input)

            record = {
                "video_data": video_data,
                "script_result": script_result,
                "success": True,
                "error": None,
            }

            output_data["success_count"] = output_data.get("success_count", 0) + 1

        except Exception as e:
            logger.error(f"脚本解构 V2 处理失败: {e}", exc_info=True)
            record = {
                "video_data": video_data,
                "script_result": None,
                "success": False,
                "error": str(e),
            }
            output_data["fail_count"] = output_data.get("fail_count", 0) + 1

        output_data["results"].append(record)
        output_data["total"] = output_data.get("total", 0) + 1

        # 处理完一条就保存一次，避免长任务中途失败导致全部丢失
        save_json(output_path, output_data)

    logger.info(
        f"批量脚本解构 V2 完成: total={output_data.get('total')}, "
        f"success={output_data.get('success_count')}, fail={output_data.get('fail_count')}"
    )


if __name__ == "__main__":
    main()