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
from mutagen.mp3 import MP3
from mutagen.flac import FLAC, Picture
from mutagen.id3 import TIT2, TPE1, TALB, USLT, APIC

EN_US = os.getenv("LANG") != "zh_CN.UTF-8"
API_163 = os.getenv("api_music163")
API_KUWO = os.getenv("api_kuwo")
API_QQ_2 = os.getenv("api_qmusic_2")
API_QQ_1 = os.getenv("api_qmusic_1")
KEY_QQ_1 = os.getenv("apikey_qmusic_1")
if not (API_163 and API_KUWO and API_QQ_2 and API_QQ_1 and KEY_QQ_1):
    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 insert_meta(audio_in: str, title, artist, album, lyric, cover: str, audio_out=""):
    if audio_out:
        shutil.copyfile(audio_in, audio_out)
    else:
        audio_out = audio_in

    if cover:
        if cover.startswith("http"):
            cover = requests.get(cover).content
        else:
            with open(cover, "rb") as file:
                cover = file.read()

    if audio_out.endswith(".mp3"):
        audio = MP3(audio_out)
        if audio.tags:
            for tag_id in list(audio.tags.keys()):
                del audio.tags[tag_id]

        else:
            audio.add_tags()

        audio.tags.add(TIT2(encoding=3, text=title))
        audio.tags.add(TPE1(encoding=3, text=artist))
        audio.tags.add(TALB(encoding=3, text=album))
        audio.tags.add(USLT(encoding=3, desc="Lyrics", text=lyric))
        if cover:
            audio.tags.add(
                APIC(
                    encoding=3,  # UTF-8 编码
                    mime="image/jpeg",  # 图片的 MIME 类型
                    type=3,  # 封面图片
                    desc="Cover",
                    data=cover,
                )
            )

        audio.save()

    elif audio_out.endswith(".flac"):
        audio = FLAC(audio_out)
        audio.tags["TITLE"] = title
        audio.tags["ARTIST"] = artist
        audio.tags["ALBUM"] = album
        audio.tags["LYRICS"] = lyric
        audio.clear_pictures()
        if cover:
            picture = Picture()
            picture.type = 3  # 封面图片
            picture.mime = "image/jpeg"
            picture.data = cover
            audio.add_picture(picture)

        audio.save()

    return audio_out


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


def extract_fst_int(text: str):
    match = re.search(r"\d+", text)
    if match:
        return str(int(match.group()))
    else:
        return None


def get_real_url(short_url):
    return requests.get(
        short_url,
        headers=HEADER,
        allow_redirects=True,
        timeout=TIMEOUT,
    ).url


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(
    id: int,
    url: str,
    title: str,
    artist: str,
    album: str,
    lyric: str,
    cover: str,
    cache: str,
):
    clean_dir(cache)
    fmt = url.split(".")[-1]
    local_file = f"{cache}/{id}.{fmt}"
    response = requests.get(url, 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))

        return insert_meta(local_file, title, artist, album, lyric, cover)

    else:
        raise ConnectionError(f"下载失败，状态码：{response.status_code}")