from __future__ import annotations

from http.cookiejar import MozillaCookieJar
from typing import Any, Optional, Union
from functools import partial
from pathlib import Path
import sys
import re

import click
import isodate
from click import Context

from unshackle.core.credential import Credential
from unshackle.core.service import Service
from unshackle.core.titles import Movie, Movies, Episode, Series
from unshackle.core.tracks import Track, Chapter, Tracks, Video, Audio, Subtitle
from unshackle.core.manifests.hls import HLS
from unshackle.core.manifests.dash import DASH


class NRK(Service):
	"""
	Service code for NRK TV (https://tv.nrk.no)

	\b
	Version: 1.0.0
	Author: lambda
	Authorization: None
	Robustness:
		Unencrypted: 1080p, DD5.1
	"""

	GEOFENCE = ("no",)
	TITLE_RE = r"^https://tv.nrk.no/serie/fengselseksperimentet/sesong/1/episode/(?P<content_id>.+)$"

	@staticmethod
	@click.command(name="NRK", short_help="https://tv.nrk.no", help=__doc__)
	@click.argument("title", type=str)
	@click.pass_context
	def cli(ctx: Context, **kwargs: Any) -> NRK:
		return NRK(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:
		pass

	def get_titles(self) -> Union[Movies, Series]:
		match = re.match(self.TITLE_RE, self.title)
		if not match:
			return

		content_id = match.group("content_id")

		r = self.session.get(self.config["endpoints"]["content"].format(content_id=content_id))
		item = r.json()

		episode, name = item["programInformation"]["titles"]["title"].split(". ", maxsplit=1)
		return Series([Episode(
			id_=content_id,
			service=self.__class__,
			language="nb",
			year=item["moreInformation"]["productionYear"],
			title=item["_links"]["seriesPage"]["title"],
			name=name,
			season=item["_links"]["season"]["name"],
			number=episode,
		)])


	def get_tracks(self, title: Union[Episode, Movie]) -> Tracks:
		r = self.session.get(self.config["endpoints"]["manifest"].format(content_id=title.id))
		manifest = r.json()
		tracks = Tracks()

		for asset in manifest["playable"]["assets"]:
			if asset["format"] == "HLS":
				tracks += Tracks(HLS.from_url(asset["url"], session=self.session).to_tracks("nb"))


		for sub in manifest["playable"]["subtitles"]:
			tracks.add(Subtitle(
				codec=Subtitle.Codec.WebVTT,
				language=sub["language"],
				url=sub["webVtt"],
				sdh=sub["type"] == "ttv",
			))


		for track in tracks:
			track.needs_proxy = True

#		if isinstance(track, Audio) and track.channels == 6.0:
#			track.channels = 5.1

		return tracks

	def get_chapters(self, title: Union[Episode, Movie]) -> list[Chapter]:
		r = self.session.get(self.config["endpoints"]["metadata"].format(content_id=title.id))
		sdi = r.json()["skipDialogInfo"]

		chapters = []
		if sdi["endIntroInSeconds"]:
			if sdi["startIntroInSeconds"]:
				chapters.append(Chapter(timestamp=0))

			chapters |= [
				Chapter(timestamp=sdi["startIntroInSeconds"], name="Intro"),
				Chapter(timestamp=sdi["endIntroInSeconds"])
			]

		if sdi["startCreditsInSeconds"]:
			if not chapters:
				chapters.append(Chapter(timestamp=0))

			credits = isodate.parse_duration(sdi["startCredits"])
			chapters.append(Chapter(credits.total_seconds(), name="Credits"))

		return chapters