import { AudioPlayerStatus, AudioResource, createAudioPlayer, createAudioResource, entersState, getVoiceConnection, joinVoiceChannel, PlayerSubscription, VoiceConnection, VoiceConnectionStatus } from "@discordjs/voice";
import { Guild, StageChannel, VoiceChannel } from "discord.js";
import { once } from "events";
import { MuzikaFace } from "./types";
import { existsSync } from "fs";

const pripojeni: Record<string, PlayerSubscription> = {};

export const oddiakritikovat = (a: string) => {
  return a
    .replace(/[àáâãäåæāăą]/g, "a")
    .replace(/[çćĉċč]/g, "c")
    .replace(/[ďđ]/g, "d")
    .replace(/[èéêëðēĕėęě]/g, "e")
    .replace(/[ĝğġģ]/g, "g")
    .replace(/[ĥħ]/g, "h")
    .replace(/[ìíîïĩīĭįı]/g, "i")
    .replace(/[ĵ]/g, "j")
    .replace(/[ķĸ]/g, "k")
    .replace(/[ĺļľŀł]/g, "l")
    .replace(/[ñńņňʼnŋ]/g, "n")
    .replace(/[òóôõöøōŏőœ]/g, "o")
    .replace(/[þ]/g, "p")
    .replace(/[ŕŗř]/g, "r")
    .replace(/[ßśŝşšſ]/g, "s")
    .replace(/[ţťŧ]/g, "t")
    .replace(/[ùúûüũūŭůűų]/g, "u")
    .replace(/[ŵ]/g, "w")
    .replace(/[ÿýŷ]/g, "y")
    .replace(/[źżž]/g, "z")
    .replace(/[ÀÁÂÃÄÅÆĀĂĄ]/g, "A")
    .replace(/[ÇĆĈĊČ]/g, "C")
    .replace(/[Ď]/g, "D")
    .replace(/[ÈÉÊËÐĒĔĖĘĚ]/g, "E")
    .replace(/[ĜĞĠĢ]/g, "G")
    .replace(/[Ĵ]/g, "J")
    .replace(/[Ķ]/g, "K")
    .replace(/[ĤĦ]/g, "H")
    .replace(/[ÌÍÎÏĨĪĬĮİ]/g, "I")
    .replace(/[ĹĻĽĿŁ]/g, "L")
    .replace(/[ÑŃŅŇŊ]/g, "N")
    .replace(/[ÒÓÔÕÖØŌŎŐŒ]/g, "O")
    .replace(/[Þ]/g, "P")
    .replace(/[ŔŖŘ]/g, "R")
    .replace(/[ŚŜŞŠ]/g, "S")
    .replace(/[ŢŤŦ]/g, "T")
    .replace(/[ÙÚÛÜŨŪŬŮŰŲ]/g, "U")
    .replace(/[Ŵ]/g, "W")
    .replace(/[ÝŶŸ]/g, "Y")
    .replace(/[ŹŻŽ]/g, "Z");
};

export const formatCas = (cas: number) => {
  const h = Math.floor(cas / 3600);
  const m = Math.floor(cas % 3600 / 60);
  const s = Math.floor(cas % 3600 % 60);

  return `${h} hodin ${m} mynut a ${s} se kund`;
};

export const joinVoice = async (channel: VoiceChannel | StageChannel | string, guild?: Guild) => {
  const channelId = typeof channel === "string" ? channel : channel.id;
  const guildId = typeof channel === "string" ? guild!.id : channel.guildId;
  const guilda = typeof channel === "string" ? guild! : channel.guild;

  let conn = getVoiceConnection(guildId);
  let prev: boolean | string = false;
  if (conn) {
    if (conn.joinConfig.channelId === channelId) {
      await entersState(conn, VoiceConnectionStatus.Ready, 3e4)
        .catch(err => {
          conn!.destroy();
          throw err;
        });
      return { conn, prev: true };
    }
    prev = conn.joinConfig.channelId!;
  }

  conn = joinVoiceChannel({
    channelId,
    guildId,
    adapterCreator: guilda.voiceAdapterCreator
  });

  await entersState(conn, VoiceConnectionStatus.Ready, 3e4)
    .catch((err: Error) => {
      conn!.destroy();
      throw err;
    });

  if (!prev) {
    const player = createAudioPlayer();
    pripojeni[guildId] = conn.subscribe(player)!;
  }

  return { conn, prev };
};

const makeAudioPlayer = (co: string | MuzikaFace) => {
  if (typeof co === "string") return createAudioResource(co);
  const res = createAudioResource(co.name, { inlineVolume: true });
  res.volume?.setVolume(co.volume);
  return res;
};

export const play = (conn: VoiceConnection, co: string | string[] | MuzikaFace | MuzikaFace[]) => new Promise<void>(async (res, rej) => {
  if (conn.state.status !== VoiceConnectionStatus.Ready) return rej("conn není ready");

  const player = pripojeni[conn.joinConfig.guildId].player;
  if (!Array.isArray(co)) {
    let aud = makeAudioPlayer(co);
    player.play(aud);
    const funkce = () => {
      res();
      player.removeListener(AudioPlayerStatus.Idle, funkce);
    };
    player.on(AudioPlayerStatus.Idle, funkce);
    return;
  }

  const resources: AudioResource[] = [];
  co.forEach(c => {
    const res = makeAudioPlayer(c);
    resources.push(res);
  });
  for (const res of resources) {
    await once(res.playStream, "readable");
  }
  player.play(resources[0]);

  let i = 0;
  const funkce = () => {
    i++;
    if (i === resources.length) {
      res();
      player.removeListener(AudioPlayerStatus.Idle, funkce);
    }
    else player.play(resources[i]);
  };
  player.on(AudioPlayerStatus.Idle, funkce);
});

const leave = (guildId: string) => {
  const conn = getVoiceConnection(guildId);
  if (!conn) return;
  conn.destroy();
  delete pripojeni[guildId];
};

export const handlePrevVoice = (guild: Guild, prev: boolean | string) => {
  if (prev === true) return; // Byl jsem v tomdle vojsu
  if (prev === false) return leave(guild.id); // Nebyl jsem ve vojsu vůbec
  joinVoice(prev, guild); // Byl jsem jinde
};

export function loadEnv() {
  if (!existsSync("config.json")) throw new Error("config.json neexistuje");
  process.env = { ...process.env, ...require("../../config.json") };
}