"""Deezer LRC provider (API powered by LyricFind)"""

from typing import Optional
from .base import LRCProvider
from ..utils import Lyrics, get_best_match

# Currently broken
# TODO: Fix invalid CSRF token

# Mostly based on https://gist.github.com/akashrchandran/95915c2081815397c454bd8aa4a118b5


class Deezer(LRCProvider):
    """Deezer provider class"""

    SEARCH_ENDPOINT = "https://api.deezer.com/search?q="
    API_ENDPOINT = "http://www.deezer.com/ajax/gw-light.php"
    token = "null"

    def __init__(self) -> None:
        super().__init__()
        self.token = self._api_call("deezer.getUserData")["results"]["checkForm"]

    def _api_call(self, method: str, json=None) -> dict:
        params = {
            "api_version": "1.0",
            "api_token": self.token,
            "input": "3",
            "method": method,
        }
        response = self.session.post(self.API_ENDPOINT, params=params, json=json)
        return response.json()

    def get_lrc_by_id(self, track_id: str) -> Optional[Lyrics]:
        lrc = Lyrics()
        lrc_response = self._api_call("song.getLyrics", json={"sng_id": track_id})
        lrc_json_objs = lrc_response["results"].get("LYRICS_SYNC_JSON")
        if not lrc_json_objs:
            lrc.unsynced = lrc_response["results"].get("LYRICS_TEXT")
            return lrc
        lrc_str = ""
        for chunk in lrc_json_objs:
            if chunk.get("lrc_timestamp") and chunk.get("line"):
                lrc_str += f"{chunk['lrc_timestamp']} {chunk['line']}\n"
        lrc.synced = lrc_str
        return lrc

    def get_lrc(self, search_term: str) -> Optional[Lyrics]:
        url = self.SEARCH_ENDPOINT + search_term.replace(" ", "+")
        search_results = self.session.get(url).json()
        cmp_key = lambda t: f"{t.get('title')} {t.get('artist').get('name')}"
        track = get_best_match(search_results.get("data", []), search_term, cmp_key)
        if not track:
            return None
        return self.get_lrc_by_id(track["id"])