from __future__ import annotations

from functools import cached_property
from typing import TYPE_CHECKING

from .net import NetClient
from .regex import x_media_url, x_tco_url, x_url

if TYPE_CHECKING:
    from .types import TweetInfo

twimg_url = 'https://pbs.twimg.com/'
vx_api_url = 'https://api.vxtwitter.com/{0}/status/{1}'


class TweetMedia:
    __slots__ = ('_url', '_thumb', '_type', '__dict__')

    def __init__(self, url: str, thumb: str, media_type: str):
        self._url: str = url
        self._thumb: str = thumb
        self._type: str = media_type

    def __str__(self):
        return f"TweetMedia(url={self.url}, thumb={self.thumb}, type={self.type})"

    @cached_property
    def _uri(self) -> str | None:
        if match := x_media_url.match(self._url):
            return match.group(2).removesuffix('.jpg').removesuffix('.png')
        return None

    @cached_property
    def url(self) -> str:
        match self._type:
            case "image":
                return f"{twimg_url}{self._uri}?format=jpg&name=4096x4096"
            case "video":
                return self._url
            case "gif":
                return self._url
            case _:
                return self._url

    @cached_property
    def thumb(self) -> str:
        match self._type:
            case "image":
                return f"{twimg_url}{self._uri}?format=jpg&name=thumb"
            case "video":
                return self._thumb
            case "gif":
                return self._thumb
            case _:
                return self._thumb

    @property
    def type(self) -> str:
        return self._type


class Tweet:
    __slots__ = ('_id', '_author', '_author_id', '_text', '_media', '_sensitive', '__dict__')

    def __init__(
            self,
            tweet_id: str,
            author: str,
            author_id: str,
            text: str,
            media: list[TweetMedia],
            sensitive: bool = False
    ):
        self._id: str = tweet_id
        self._author: str = author
        self._author_id: str = author_id
        self._text: str = text
        self._media: list[TweetMedia] = media
        self._sensitive: bool = sensitive

    @property
    def id(self) -> str:
        return self._id

    @cached_property
    def url(self) -> str:
        return f"https://twitter.com/{self._author_id}/status/{self._id}"

    @property
    def author(self) -> str:
        return self._author

    @cached_property
    def author_url(self) -> str:
        return f"https://twitter.com/{self._author_id}"

    @property
    def text(self) -> str:
        return self._text

    @property
    def media(self) -> list[TweetMedia]:
        return self._media

    @property
    def sensitive(self) -> bool:
        return self._sensitive


class ProcessTweet:
    __slots__ = ('_url', '_tweet')

    def __init__(self, url: str):
        self._url: str = url

    async def __aenter__(self):
        self._tweet = await self._fetch_tweet()
        return Tweet(
            tweet_id=self._tweet["tweetID"],
            author=self._tweet["user_name"],
            author_id=self._tweet["user_screen_name"],
            text=self._tweet_text,
            media=self._tweet_media,
            sensitive=self._tweet["possibly_sensitive"]
        )

    async def __aexit__(self, exc_type, exc_val, exc_tb):
        pass

    async def _fetch_tweet(self) -> TweetInfo:
        match = x_url.match(self._url)
        assert match, f"Invalid URL: {self._url}"
        auther_id, tweet_id = match.groups()
        return await NetClient.fetch_json(vx_api_url.format(auther_id, tweet_id))

    @property
    def _tweet_text(self) -> str:
        match = x_tco_url.search(self._tweet['text'])
        return self._tweet['text'][:match.start()].strip() if match else self._tweet['text']

    @property
    def _tweet_media(self) -> list[TweetMedia]:
        return [
            TweetMedia(
                url=tweet_media['url'],
                thumb=tweet_media['thumbnail_url'],
                media_type=tweet_media['type']
            )
            for tweet_media in self._tweet['media_extended']
        ]