import os
import re
import shutil
import requests
from tqdm import tqdm
from datetime import datetime
from zoneinfo import ZoneInfo
from tzlocal import get_localzone


EN_US = os.getenv("LANG") != "zh_CN.UTF-8"
API_TIKTOK = os.getenv("api_tiktok")
API_BILI = os.getenv("api_bili")
API_BILI_1 = os.getenv("api_bili_1")
API_BILI_2 = os.getenv("api_bili_2")
if not (API_TIKTOK and API_BILI_1 and API_BILI_2):
    print("请检查环境变量")
    exit()

TIMEOUT = None
TMP_DIR = "./__pycache__"
HEADER = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36"
}


def timestamp(naive_time: datetime = None, target_tz=ZoneInfo("Asia/Shanghai")):
    if not naive_time:
        naive_time = datetime.now()

    local_tz = get_localzone()
    aware_local = naive_time.replace(tzinfo=local_tz)
    return aware_local.astimezone(target_tz).strftime("%Y-%m-%d %H:%M:%S")


def mk_dir(dirpath: str):
    if not os.path.exists(dirpath):
        os.makedirs(dirpath)


def rm_dir(dirpath: str):
    if os.path.exists(dirpath):
        shutil.rmtree(dirpath)


def clean_dir(dirpath: str):
    rm_dir(dirpath)
    os.makedirs(dirpath)


def download_file(url, video_id, cache_dir: str):
    clean_dir(cache_dir)
    local_file = f"{cache_dir}/{video_id}.mp4"
    response = requests.get(url, headers=HEADER, stream=True)
    if response.status_code == 200:
        total_size = int(response.headers.get("Content-Length", 0)) + 1
        time_stamp = timestamp()
        progress_bar = tqdm(
            total=total_size,
            unit="B",
            unit_scale=True,
            desc=f"[{time_stamp}] {local_file}",
        )
        with open(local_file, "wb") as f:
            for chunk in response.iter_content(chunk_size=8192):
                if chunk:  # 确保 chunk 不为空
                    f.write(chunk)  # 更新进度条
                    progress_bar.update(len(chunk))

    else:
        raise ConnectionError(f"HTTP: {response.status_code}")

    return local_file


def extract_fst_url(text):
    url_pattern = r'(https?://[^\s"]+)'
    match = re.search(url_pattern, text)
    if match:
        return match.group(1)
    else:
        return None