import asyncio
import aiohttp

from discord.ext import commands
from base64 import urlsafe_b64encode

from . import utils


class Spotify:
    def __init__(self, bot):
        self.bot = bot
        self._token = None
        self._client_id = utils.spotify_id or ""
        self._client_secret = utils.spotify_secret or ""

        self._authorization = "{}:{}".format(self._client_id, self._client_secret)
        self.headers = {
            "Authorization": "Basic {}".format(
                urlsafe_b64encode(self._authorization.encode()).decode()
            )
        }
        self.bot.loop.create_task(self.api_token_task())

    async def api_token_task(self):
        url = "https://accounts.spotify.com/api/token"
        opts = {"grant_type": "client_credentials"}
        while True:
            with aiohttp.ClientSession(headers=self.headers) as session:
                response = await session.post(url, data=opts)
                data = await response.json()
                self._token = data.get("access_token")

            await asyncio.wait(data.get("expires_in"))

    @commands.group()
    @commands.guild_only()
    @utils.custom_perms(manage_guild=True)
    @utils.check_restricted()
    async def spotify(self, ctx, *, query):
        """Searches Spotify for a song, giving you the link you can use to listen in"""
        # Setup the headers with the token that should be here
        headers = {"Authorization": "Bearer {}".format(self._token)}
        opts = {"q": query, "type": "track,artist"}
        url = "https://api.spotify.com/v1/search"
        response = await utils.request(url, headers=headers, payload=opts)
        try:
            await ctx.send(response.get("tracks").get("items")[0].get("external_urls").get("spotify"))
        except (KeyError, AttributeError):
            await ctx.send("Couldn't find a song for:\n{}".format(query))

    @spotify.command()
    @commands.guild_only()
    @utils.custom_perms(manage_guild=True)
    @utils.check_restricted()
    async def playlist(self, ctx, *, query):
        # Setup the headers with the token that should be here
        headers = {"Authorization": "Bearer {}".format(self._token)}
        opts = {"q": query, "type": "playlist"}
        url = "https://api.spotify.com/v1/search"
        response = await utils.request(url, headers=headers, payload=opts)
        try:
            await ctx.send(response.get("playlists").get("items")[0].get("external_urls").get("spotify"))
        except (KeyError, AttributeError):
            await ctx.send("Couldn't find a song for:\n{}".format(query))




def setup(bot):
    bot.add_cog(Spotify(bot))