import { Connectors, LoadType, Shoukaku, Track } from "shoukaku";
import { Client } from "discord.js";
import { GuildPlayer } from "./GuildPlayer";
import { Config } from "../utils/Config";
import { Logger } from "../utils/Logger";
import { parseLink } from "../utils/music/Url";
import { shuffle } from "../utils/Shuffle";
import { Spotify } from "../utils/api/Spotify";
import { YoutubeMusic } from "../utils/api/YoutubeMusic";

export class LavalinkManager {
  public shoukaku: Shoukaku;
  private players: Map<string, GuildPlayer> = new Map();

  constructor(readonly client: Client) {
    this.shoukaku = new Shoukaku(new Connectors.DiscordJS(client), [{
      name: "tkrmagid-Lavalink-Server",
      url: `${Config.lavalink.host}:${Config.lavalink.port}`,
      auth: Config.lavalink.pw,
      secure: false,
    }], {
      moveOnDisconnect: true,
      reconnectTries: 3,
    });

    this.shoukaku.on("ready", (name) => {
      Logger.ready(`[LavalinkManager] 노드 [${name}] 연결 완료!`);
    });
    this.shoukaku.on("error", (name, err) => {
      Logger.error(`[LavalinkManager] 노드 [${name}] 에러: ${String(err)}`);
    });
  }

  getPlayer(guildId: string) {
    return this.players.get(guildId);
  }
  addPlayer(guildId: string, player: GuildPlayer) {
    this.players.set(guildId, player);
  }
  delPlayer(guildId: string) {
    this.players.delete(guildId);
  }

  async search(guildId: string, query: string, userId: string, player?: GuildPlayer) {
    const node = this.shoukaku.options.nodeResolver(this.shoukaku.nodes);
    if (!node) {
      this.delPlayer(guildId);
      throw new ReferenceError(`[LavalinkManager] lavalink node is missing`);
    }
    player = player ?? this.getPlayer(guildId);
    if (!player) return;
    const { isUrl, text, flags } = parseLink(query.trim());
    let searchText = isUrl ? text : (await Spotify.getSearchUrl(text)) ?? (await YoutubeMusic.getSearchUrl(text)) ?? `ytsearch:${text}`;
    if (flags.has('y')) searchText = (await YoutubeMusic.getSearchUrl(text)) ?? `ytsearch:${text}`;
    if (searchText.startsWith("ytsearch") && !flags.has('o')) searchText += " Topic";
    const result = await node.rest.resolve(searchText);
    if (!result || result.loadType === LoadType.EMPTY || result.loadType === LoadType.ERROR) {
      if (result?.loadType === LoadType.ERROR) Logger.error(`[LavalinkManager] loadtype ERROR: ${result.data.message}`);
      // 노래 못찾았을때
      player.errMsg(`노래를 찾을수 없습니다.`);
      return;
    }
    if (result.loadType === LoadType.PLAYLIST) {
      player.addTracks(
        flags?.has("s") ? shuffle(result.data.tracks) : result.data.tracks,
        userId
      );
      return;
    }
    if (result.loadType === LoadType.TRACK) {
      player.addTrack(result.data, userId);
      return;
    }
    if (result.loadType === LoadType.SEARCH) {
      if (result.data.length === 0) {
        player.errMsg(`노래를 찾을수 없습니다.`);
        return;
      }
      player.addTrack(result.data[0], userId);
      return;
    }
  }

  public async youtubeSearch(query: string): Promise<Track[]> {
    const node = this.shoukaku.options.nodeResolver(this.shoukaku.nodes);
    if (!node) throw new ReferenceError(`[LavalinkManager] lavalink node is missing`);
    const result = await node.rest.resolve(`ytsearch:${query.trim()}`);
    // if (!result || result.loadType === LoadType.EMPTY || result.loadType === LoadType.ERROR) return [];
    if (result?.loadType === LoadType.TRACK) return [ result.data ];
    if (result?.loadType === LoadType.SEARCH) return result.data;
    return [];
  }
}