import os
import subprocess
import asyncio
import uuid
import signal
import sys
import spider
import stream
import threading
import time

class HLS2YouTube:
    def __init__(self):
        self.processes = {}
        self.stop_flag = threading.Event()

    def start_stream(self, real_url, youtube_key, room_name=None):
        room_name = room_name or f"抖音_{str(uuid.uuid4())[:8]}"
        print(f"[{room_name}] 启动推流，目标 YouTube Key: {youtube_key}")
        threading.Thread(target=self._stream_thread, args=(real_url, youtube_key, room_name), daemon=True).start()

    def _stream_thread(self, real_url, youtube_key, room_name):
        while not self.stop_flag.is_set():
            cmd = [
                "ffmpeg",
                "-rw_timeout", "50000000",
                "-user_agent", "Mozilla/5.0",
                "-headers", "Referer: https://www.douyin.com/",
                "-fflags", "+nobuffer+genpts",
                "-flags", "low_delay",
                "-reconnect", "1",
                "-reconnect_at_eof", "1",
                "-reconnect_streamed", "1",
                "-reconnect_delay_max", "10",
                "-i", real_url,
                "-c:v", "libx264",
                "-preset", "veryfast",
                "-tune", "zerolatency",
                "-b:v", "3000k",
                "-maxrate", "3000k",
                "-bufsize", "6000k",
                "-r", "30",
                "-g", "60",
                "-c:a", "aac",
                "-b:a", "128k",
                "-f", "flv",
                f"rtmp://a.rtmp.youtube.com/live2/{youtube_key}"
            ]
            try:
                proc = subprocess.Popen(cmd)
                self.processes[room_name] = proc
                while proc.poll() is None and not self.stop_flag.is_set():
                    time.sleep(1)
                if proc.poll() is None:
                    proc.terminate()
                print(f"[{room_name}] 推流中断，5秒后重连")
                time.sleep(5)
            except Exception as e:
                print(f"[{room_name}] 推流异常: {e}, 5秒后重试")
                time.sleep(5)

    def stop_all(self):
        print("停止所有推流...")
        self.stop_flag.set()
        for room_name, proc in self.processes.items():
            if proc.poll() is None:
                proc.terminate()

# ----------------- 抖音解析逻辑 -----------------
async def get_douyin_real_url(record_url, record_quality="原画"):
    if 'v.douyin.com' not in record_url and '/user/' not in record_url:
        json_data = await spider.get_douyin_stream_data(url=record_url)
    else:
        json_data = await spider.get_douyin_app_stream_data(url=record_url)
    port_info = await stream.get_douyin_stream_url(json_data, record_quality, None)
    return port_info.get("record_url")

# ----------------- 启动推流 -----------------
def start_douyin_to_youtube(record_url, youtube_key, room_name=None):
    try:
        real_url = asyncio.run(get_douyin_real_url(record_url))
    except Exception as e:
        print(f"获取真实直播流失败: {e}")
        return
    if not real_url:
        print("获取真实直播流失败")
        return
    print(f"实际直播流: {real_url}")
    hls2yt = HLS2YouTube()
    hls2yt.start_stream(real_url, youtube_key, room_name)
    return hls2yt

# ----------------- 示例 -----------------
if __name__ == "__main__":
    DOUYIN_URL = "https://live.douyin.com/104914538985"  # 抖音直播 URL
    YOUTUBE_KEY = "qxvb-r47b-r5ju-6ud3-6k7z"            # YouTube 直播 Key

    hls_instance = start_douyin_to_youtube(DOUYIN_URL, YOUTUBE_KEY)

    def signal_handler(sig, frame):
        if hls_instance:
            hls_instance.stop_all()
        sys.exit(0)

    signal.signal(signal.SIGINT, signal_handler)
    signal.signal(signal.SIGTERM, signal_handler)

    while True:
        time.sleep(60)