from __future__ import annotations

from datetime import datetime
import logging
from typing import Dict, Optional


from ...models import MediaElement
from ..all.ytdl import get_video_info, YtdlErrorException
from ..generic import AuthorExtractedData, ExtractedData, ExtractionError, SuitableLevel
from .base import  MediaExtractor


class YtdlMediaExtractor(MediaExtractor[Dict]):

    def __init__(self):
        super().__init__("ytdl")

    def uri_suitable(self, uri: str) -> SuitableLevel:
        return SuitableLevel.FALLBACK

    def _get_author_data(self, data: Dict) -> Optional[AuthorExtractedData]:
        video_extractor_key = data.get("extractor_key") or data["ie_key"]
        author_key = data.get("channel_id") or data.get("uploader_id")
        author_name = data.get("channel") or data.get("uploader") or data.get("uploader_id")
        return AuthorExtractedData(
            object_uri = data.get("channel_url") or data.get("uploader_url"),
            extractor_name = self.name,
            object_key = f"author:{video_extractor_key}:{author_key}" if author_key else None,
            author_name = f"{video_extractor_key}: {author_name}" if author_name else None,
        )

    def _extract_online(self, uri: str) -> ExtractedData[Dict]:
        logging.info(f"Request info using youtube-dl for {uri!r}")
        try:
            vid_data = get_video_info(uri)
        except YtdlErrorException as e:
            raise ExtractionError from e
        if vid_data.get("is_live", False):
            raise ExtractionError("Video is live, so pass extraction")
        ytdl_extractor_key = vid_data.get("extractor_key") or vid_data["ie_key"]
        ytdl_video_id = vid_data["id"]
        return ExtractedData[Dict](
            object_uri=uri,
            extractor_name=self.name,
            object_key=f"{ytdl_extractor_key}:{ytdl_video_id}",
            data=vid_data,
        )

    def _update_object_raw(self, object: MediaElement, data: Dict) -> str:
        object.title = f"{data['title']} - {data['uploader']}" if "uploader" in data else data["title"]
        object.release_date = datetime.strptime(data["upload_date"], "%Y%m%d")
        object.length = int(data["duration"])