const AbstractHandler = require('./AbstractHandler');
const Constants = require('../../../../util/Constants');

class TypingStartHandler extends AbstractHandler {
  handle(packet) {
    const client = this.packetManager.client;
    const data = packet.d;
    const channel = client.channels.get(data.channel_id);
    const user = client.users.get(data.user_id);
    const timestamp = new Date(data.timestamp * 1000);

    if (channel && user) {
      if (channel.type === 'voice') {
        return client.emit('warn', `Discord sent a typing packet to voice channel ${channel.id}`);
      }
      if (channel._typing.has(user.id)) {
        const typing = channel._typing.get(user.id);
        typing.lastTimestamp = timestamp;
        typing.resetTimeout(tooLate(channel, user));
      } else {
        channel._typing.set(user.id, new TypingData(timestamp, timestamp, tooLate(channel, user)));
        client.emit(Constants.Events.TYPING_START, channel, user);
      }
    }
  }
}

class TypingData {
  constructor(since, lastTimestamp, _timeout) {
    this.since = since;
    this.lastTimestamp = lastTimestamp;
    this._timeout = _timeout;
  }

  resetTimeout(_timeout) {
    clearTimeout(this._timeout);
    this._timeout = _timeout;
  }

  get elapsedTime() {
    return Date.now() - this.since;
  }
}

function tooLate(channel, user) {
  return channel.client.setTimeout(() => {
    channel.client.emit(Constants.Events.TYPING_STOP, channel, user, channel._typing.get(user.id));
    channel._typing.delete(user.id);
  }, 6000);
}

/**
 * Emitted whenever a user starts typing in a channel
 * @event Client#typingStart
 * @param {Channel} channel The channel the user started typing in
 * @param {User} user The user that started typing
 */

/**
 * Emitted whenever a user stops typing in a channel
 * @event Client#typingStop
 * @param {Channel} channel The channel the user stopped typing in
 * @param {User} user The user that stopped typing
 */

module.exports = TypingStartHandler;

@@ -484,23 +484,16 @@
         
-return 
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@@ -568,16 +568,32 @@
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Fix Hydra's ESLint failure