from abc import ABC, abstractmethod
from typing import Optional, Tuple
import httpx
import re
from bs4 import BeautifulSoup


class BaseDownloader(ABC):
    """Base class for all host downloaders"""

    def __init__(self):
        self.client = httpx.AsyncClient(timeout=10.0, follow_redirects=True)

    @abstractmethod
    async def get_download_link(self, url: str) -> Tuple[str, str]:
        """
        Extract direct download link and filename from host URL
        Returns: (download_url, filename)
        """
        pass

    @abstractmethod
    def can_handle(self, url: str) -> bool:
        """Check if this downloader can handle the given URL"""
        pass

    async def close(self):
        await self.client.aclose()

    async def _fetch_page(self, url: str) -> str:
        response = await self.client.get(url)
        response.raise_for_status()
        return response.text

    def _extract_filename_from_headers(self, headers: dict) -> Optional[str]:
        content_disposition = headers.get("content-disposition", "")
        if "filename=" in content_disposition:
            filename = content_disposition.split("filename=")[-1].strip('"')
            return filename
        return None

    async def search_anime(self, query: str, lang: str = "vostfr") -> list[dict]:
        """
        Search for anime on this provider
        Returns list of anime with title, url, and optional cover image
        """
        return []

    async def get_episodes(self, anime_url: str, lang: str = "vostfr") -> list[dict]:
        """
        Get list of episodes for an anime
        Returns list of episode numbers and their URLs
        """
        return []