# -*- coding: utf-8 -*-
"""服务类与进程级服务实例。
"""

import logging
from pathlib import Path

from core.config import (
    Settings,
)
from music_api import (
    NeteaseAPI,
    load_cookies,
)
from music_downloader import (
    MusicDownloader,
)

# 向后兼容别名：既有代码/文档沿用 APIConfig 名称
APIConfig = Settings


class MusicAPIService:
    """音乐API服务类"""

    def __init__(self, config: APIConfig):
        self.config = config
        self.logger = self._setup_logger()
        self.netease_api = NeteaseAPI()
        # 下载目录传给下载器——原实现下载器固定 downloads，
        # 服务配置指向自定义目录时音乐落盘位置与配置分离
        self.downloader = MusicDownloader(download_dir=config.downloads_dir)

        # 创建下载目录
        self.downloads_path = Path(config.downloads_dir)
        self.downloads_path.mkdir(exist_ok=True)

        self.logger.info(f"音乐API服务初始化完成，下载目录: {self.downloads_path.absolute()}")

    def _setup_logger(self) -> logging.Logger:
        """设置日志记录器"""
        logger = logging.getLogger('music_api')
        logger.setLevel(getattr(logging, self.config.log_level.upper()))

        if not logger.handlers:
            # 控制台处理器
            console_handler = logging.StreamHandler()
            console_formatter = logging.Formatter(
                '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
            )
            console_handler.setFormatter(console_formatter)
            logger.addHandler(console_handler)

            # 文件处理器（轮转：单文件 5MB，保留 3 份，防止长期运行无限膨胀）
            try:
                from logging.handlers import RotatingFileHandler
                file_handler = RotatingFileHandler('music_api.log', maxBytes=5 * 1024 * 1024,
                                                   backupCount=3, encoding='utf-8')
                file_formatter = logging.Formatter(
                    '%(asctime)s - %(name)s - %(levelname)s - %(funcName)s:%(lineno)d - %(message)s'
                )
                file_handler.setFormatter(file_formatter)
                logger.addHandler(file_handler)
            except Exception as e:
                logger.warning(f"无法创建日志文件: {e}")

        return logger

    def _get_cookies(self) -> dict[str, str]:
        """直接从 cookie.txt 读取并解析为 dict"""
        try:
            cookies = load_cookies()
            if not cookies:
                self.logger.warning("cookie.txt 为空或不存在，部分接口（VIP 音质）将不可用")
            return cookies
        except Exception as e:
            self.logger.error(f"读取 cookie.txt 异常: {e}")
            return {}

    def _format_file_size(self, size_bytes) -> str:
        """格式化文件大小（上游 size 可能为 null/垃圾值：容错返回"大小未知"而非 500）"""
        try:
            size = float(size_bytes or 0)
        except (TypeError, ValueError):
            return "大小未知"
        if size <= 0:
            return "0B"

        units = ["B", "KB", "MB", "GB", "TB"]
        unit_index = 0

        while size >= 1024.0 and unit_index < len(units) - 1:
            size /= 1024.0
            unit_index += 1

        return f"{size:.2f}{units[unit_index]}"

    def _get_quality_display_name(self, quality: str) -> str:
        """获取音质显示名称"""
        quality_names = {
            'standard': "标准音质",
            'exhigh': "极高音质",
            'lossless': "无损音质",
            'hires': "Hi-Res音质",
            'sky': "沉浸环绕声",
            'jyeffect': "高清环绕声",
            'jymaster': "超清母带",
            'dolby': "杜比全景声"
        }
        return quality_names.get(quality, f"未知音质({quality})")


# 服务实例（框架无关）
config = APIConfig()

api_service = MusicAPIService(config)