import { Redis } from "ioredis";
import { Config } from "../utils/Config";
import { Logger } from "../utils/Logger";
import { YoutubeMusic } from "../utils/api/YoutubeMusic";
import { Spotify } from "../utils/api/Spotify";
import { lavalinkManager } from "../index";
import { getGuildById, getVoiceChannelById } from "../utils/music/Channel";
import { channelJoin } from "../commands/join";

type SubAction = "search" | "player_play" | "player_playlist";

export class RedisClient {
  public pub: Redis = new Redis({ host: Config.redis.host, port: Config.redis.port });
  public sub: Redis = new Redis({ host: Config.redis.host, port: Config.redis.port });

  constructor() {
    this.pub.on("connect", () => {
      Logger.ready(`[Redis Pub] 연결 완료 (말하는 입)`);
    });
    this.sub.on("connect", () => {
      Logger.ready(`[Redis Sub] 연결 완료 (듣는 귀)`);
    });

    this.sub.subscribe("site-bot", (err, count) => {
      if (err) return Logger.error(`[Redis Sub] 구독 실패: ${err.message}`);
      Logger.log(`[Redis Sub] 'bot-commands' 채널 구독 중... (현재 구독 채널 수: ${count})`);
    });

    this.sub.on("message", async (ch, msg): Promise<any> => {
      if (ch !== "site-bot") return;
      Logger.log(`[Redis Sub] [Message] 수신: {\n  채널: ${ch}\n  내용: ${msg}\n}`);
      try {
        const data = JSON.parse(msg) as { action: SubAction; requestId: string; userId?: string; [key: string]: any; };
        
        if (data.action === "search") {
          const resultKey = `search:${data.requestId}`;
          const results = await Spotify.getSearchFull(data.query) ?? await YoutubeMusic.getSearchFull(data.query) ?? [];
          await this.pub.setex(resultKey, 60, JSON.stringify(results));
          Logger.log(`[Redis Pub] [setex] 결과 저장: (${resultKey})`);
        }
        else if (data.action === "player_play") {
          const resultKey = `player:play:${data.requestId}`;
          if (!data.serverId) return await this.pub.setex(resultKey, 60, JSON.stringify({ success: false, message: "serverId를 찾을수 없습니다." }));
          if (!data.userId) return await this.pub.setex(resultKey, 60, JSON.stringify({ success: false, message: "userId를 찾을수 없습니다." }));
          const guild = await getGuildById(data.serverId);
          if (!guild) return await this.pub.setex(resultKey, 60, JSON.stringify({ success: false, message: "guild를 찾을수 없습니다." }));
          let player = lavalinkManager.getPlayer(guild.id);
          const voiceChannel = await getVoiceChannelById(guild, data.userId);
          if (!player) {
            if (!voiceChannel) return await this.pub.setex(resultKey, 60, JSON.stringify({ success: false, message: "음성채널에 들어가서 이용해주세요." }));
            player = (await channelJoin(guild, voiceChannel.id)).player;
          }
          if (!player) return await this.pub.setex(resultKey, 60, JSON.stringify({ success: false, message: "세션을 찾을수 없습니다." }));
          await lavalinkManager.search(guild.id, data.track.url, data.userId, player);
          // await this.pub.setex(resultKey, 60, JSON.stringify({ success: true, message: "노래 추가 완료" }));
        }
        else if (data.action === "player_playlist") {
          const resultKey = `player:play:${data.requestId}`;
          if (!data.serverId) return await this.pub.setex(resultKey, 60, JSON.stringify({ success: false, message: "serverId를 찾을수 없습니다." }));
          if (!data.userId) return await this.pub.setex(resultKey, 60, JSON.stringify({ success: false, message: "userId를 찾을수 없습니다." }));
          const guild = await getGuildById(data.serverId);
          if (!guild) return await this.pub.setex(resultKey, 60, JSON.stringify({ success: false, message: "guild를 찾을수 없습니다." }));
          let player = lavalinkManager.getPlayer(guild.id);
          const voiceChannel = await getVoiceChannelById(guild, data.userId);
          if (!player) {
            if (!voiceChannel) return await this.pub.setex(resultKey, 60, JSON.stringify({ success: false, message: "음성채널에 들어가서 이용해주세요." }));
            player = (await channelJoin(guild, voiceChannel.id)).player;
          }
          if (!player) return await this.pub.setex(resultKey, 60, JSON.stringify({ success: false, message: "세션을 찾을수 없습니다." }));
          await lavalinkManager.search(guild.id, data.playlistUrl, data.userId, player);
          // await this.pub.setex(resultKey, 60, JSON.stringify({ success: true, message: "플레이리스트 추가 완료" }));
        }
      } catch (err) {
        Logger.error(`명령어 처리 중 에러: ${String(err)}`);
      }
    });

    this.pub.on("error", (err) => {
      Logger.error(`[Redis Pub] [Error] ${err.message}`);
    });
    this.sub.on("error", (err) => {
      Logger.error(`[Redis Sub] [Error] ${err.message}`);
    });
  }

  public publishState(event: string, data: any) {
    const payload = JSON.stringify({
      event,
      timestamp: Date.now(),
      ...data,
    });
    this.pub.publish("bot-site", payload);
    Logger.log(`[Redis Pub] bot -> site 전송: ${event}`);
  }

  public runTest() {
    Logger.debug(`[Redis Test] 3초 뒤에 테스트 통신 시작...`);
    setTimeout(() => {
      // 1. 봇 -> 사이트(웹) 방향 전송 테스트
      this.publishState("TRACK_START", {
        author: "테스트",
        title: "제목",
        duration: 196000,
      });

      // 2. 사이트(웹) -> 봇 방향 수신 테스트 (가짜 명령을 쏴서 스스로 수신하는지 확인)
      setTimeout(() => {
        const mockCommand = JSON.stringify({ action: "skip", userId: "12345" });
        // 테스트를 위해 본인이 site-bot 채널로 발행해 봅니다.
        this.pub.publish("site-bot", mockCommand);
      }, 1000);
    }, 3000);
  }
}