Paradise/tgui/packages/tgui-say/ChannelIterator.ts

export type Channel = 'Say' | 'Radio' | 'Whisper' | 'Me' | 'OOC' | 'LOOC' | 'Mentor' | 'Admin' | 'Dsay' | 'Dev';

/**
 * ### ChannelIterator
 * Cycles a predefined list of channels,
 * skipping over blacklisted ones,
 * and providing methods to manage and query the current channel.
 */
export class ChannelIterator {
  private index: number = 0;
  private readonly channels: Channel[] = [
    'Say',
    'Radio',
    'Whisper',
    'Me',
    'OOC',
    'LOOC',
    'Mentor',
    'Admin',
    'Dsay',
    'Dev',
  ];
  private readonly blacklist: Channel[] = ['Mentor', 'Admin', 'Dsay', 'Dev'];
  private readonly quiet: Channel[] = ['OOC', 'LOOC', 'Mentor', 'Admin', 'Dsay', 'Dev'];

  public next(): Channel {
    if (this.blacklist.includes(this.channels[this.index])) {
      return this.channels[this.index];
    }

    for (let index = 1; index <= this.channels.length; index++) {
      let nextIndex = (this.index + index) % this.channels.length;
      if (!this.blacklist.includes(this.channels[nextIndex])) {
        this.index = nextIndex;
        break;
      }
    }

    return this.channels[this.index];
  }

  public isCurrentChannelBlacklisted(): boolean {
    return this.blacklist.includes(this.channels[this.index]);
  }

  public set(channel: Channel): void {
    this.index = this.channels.indexOf(channel) || 0;
  }

  public current(): Channel {
    return this.channels[this.index];
  }

  public isMe(): boolean {
    return this.channels[this.index] === 'Me';
  }

  public isSay(): boolean {
    return this.channels[this.index] === 'Say';
  }

  public isVisible(): boolean {
    return !this.quiet.includes(this.channels[this.index]);
  }

  public reset(): void {
    this.index = 0;
  }
}