from __future__ import annotations

from http.cookiejar import MozillaCookieJar
from typing import Any, Optional
import re

import click
from click import Context
from bs4 import BeautifulSoup

from unshackle.core.credential import Credential
from unshackle.core.service import Service
from unshackle.core.titles import Movie, Movies
from unshackle.core.tracks import Chapter, Tracks
from unshackle.core.manifests.dash import DASH


class MTSP(Service):
	TITLE_RE = r"^(?:https?://(?:www\.)?magentasport\.de/event/[^/]+)?/[0-9]+/(?P<video_id>[0-9]+)"

	@staticmethod
	@click.command(name="MTSP", short_help="https://magentasport.de", help=__doc__)
	@click.argument("title", type=str)
	@click.pass_context
	def cli(ctx: Context, **kwargs: Any) -> MTSP:
		return MTSP(ctx, **kwargs)

	def __init__(self, ctx: Context, title: str):
		self.title = title
		super().__init__(ctx)

	def authenticate(self, cookies: Optional[MozillaCookieJar] = None, credential: Optional[Credential] = None) -> None:
		cache = self.cache.get(f"session_{credential.sha1}")
		if cache and not cache.expired:
			self.session.cookies.update({
				"session": cache.data,
				"entitled": "1",
			})
			return

		self.log.info("No cached session cookie, logging in...")
		r = self.session.get(self.config["endpoints"]["login_form"])
		r.raise_for_status()

		tid, xsrf_name, xsrf_value = self.get_login_tid_xsrf(r.text)

		data = {
			"tid": tid,
			xsrf_name: xsrf_value,
			"pkc": "",
			"webauthn_supported": "false",
			"pw_usr": credential.username
		}
		r = self.session.post(self.config["endpoints"]["login_post"], data=data)
		r.raise_for_status()

		tid, xsrf_name, xsrf_value = self.get_login_tid_xsrf(r.text)

		data = {
			"tid": tid,
			xsrf_name: xsrf_value,
			"hidden_usr": credential.username,
			"pw_pwd": credential.password,
			"persist_session_displayed": "1",
			"persist_session": "on"
		}
		r = self.session.post(self.config["endpoints"]["login_post"], data=data)
		r.raise_for_status()

		session = self.session.cookies.get_dict().get('session')
		cache.set(session)

	def get_titles(self) -> Movies:
		video_id = re.match(self.TITLE_RE, self.title).group("video_id")
		r = self.session.get(self.config["endpoints"]["video_config"].format(video_id=video_id))
		config = r.json()

		return Movies([Movie(
			id_=video_id,
			service=self.__class__,
			name=config["title"],
			language="de",
			data=config,
		)])

	def get_tracks(self, title: Movie) -> Tracks:
		r = self.session.post(title.data['streamAccess'])
		access = r.json()
		tracks = DASH.from_url(access["data"]["stream"]["dash"]).to_tracks(title.language)

		# Audio tracks sometimes have 'random' language codes in the DASH manifest.
		# Since there is only ever one language in practice anyway, force it to the correct one.
		for track in tracks:
			track.language = title.language

		return tracks

	def get_chapters(self, title: Movie) -> list[Chapter]:
		return [
		]

	def get_login_tid_xsrf(self, html):
		soup = BeautifulSoup(html, "html.parser")
		form = soup.find("form", id="login")
		xsrf = form.find("input", {"name": re.compile("^xsrf_")})
		tid = form.find("input", {"name": "tid"})
		return tid.get("value"), xsrf.get('name'), xsrf.get("value")