#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
volce-lipsync-adapter.py · 火山引擎口型同步适配器
D144 · 铸渊 ICE-GL-ZY001

对接火山引擎智能视觉服务"视频改口型"API。
需要预先开通服务并获取 AK/SK。

文档:
  https://www.volcengine.com/docs/85128/1462622

依赖:
  pip install volcengine-python-sdk

当前状态: STUB — 需要开通服务并配置 AK/SK 后才能激活
"""

import os
import json
import base64
import hashlib
import hmac
import urllib.request
import urllib.parse
from datetime import datetime, timezone


SECRETS_FILES = [
    os.environ.get("VIDEO_AI_SECRETS_FILE", ""),
    "/root/guanghulab-local-secrets/cang-ying.env",
    os.path.expanduser("~/guanghulab-local-secrets/cang-ying.env"),
    "/Users/bingshuolingdianyuanhe/Documents/guanghulab-local-secrets/video-ai-system.env",
]


def _load_secrets():
    """加载本地密钥文件"""
    secrets = {}
    for secrets_file in SECRETS_FILES:
        if not secrets_file or not os.path.isfile(secrets_file):
            continue
        with open(secrets_file) as f:
            for line in f:
                line = line.strip()
                if line and not line.startswith("#") and "=" in line:
                    k, v = line.split("=", 1)
                    secrets[k.strip()] = v.strip().strip('"').strip("'")
        break
    return secrets


def check_available():
    """检查火山口型同步服务是否可用"""
    secrets = _load_secrets()
    ak = secrets.get("VOLCE_ACCESS_KEY", "")
    sk = secrets.get("VOLCE_SECRET_KEY", "")

    if not ak or not sk:
        return {
            "available": False,
            "reason": "未配置 VOLCE_ACCESS_KEY / VOLCE_SECRET_KEY",
            "help": "请前往火山引擎控制台 → 访问控制 → 创建Access Key → 写入本地密钥文件"
        }

    return {
        "available": True,
        "method": "volce-video-lipsync"
    }


def submit_lipsync(video_path, audio_path, source_lang="zh", target_lang="zh"):
    """
    提交视频改口型任务

    注意: 当前为 STUB 实现。火山引擎视频改口型 API 需要:
    1. 开通智能视觉服务
    2. 获取独立 AK/SK（不是 JIMENG_API_KEY）
    3. 上传视频到火山 TOS 对象存储
    4. 提交异步任务并轮询结果

    :param video_path: 输入视频
    :param audio_path: 对白音频
    :param source_lang: 源语言
    :param target_lang: 目标语言
    :return: {success, output_path, method}
    """
    status = check_available()
    if not status["available"]:
        return {
            "success": False,
            "error": status["reason"],
            "method": "volce-stub"
        }

    # STUB: 需要完整开通后才能调用
    return {
        "success": False,
        "error": "火山视频改口型 API 尚未完整接入（STUB）",
        "method": "volce-stub",
        "next_steps": [
            "开通火山引擎智能视觉服务",
            "配置 VOLCE_ACCESS_KEY / VOLCE_SECRET_KEY",
            "实现视频上传到 TOS 的逻辑",
            "实现异步任务提交和轮询"
        ]
    }


if __name__ == "__main__":
    result = check_available()
    print(json.dumps(result, ensure_ascii=False, indent=2))