import { MatrixEvent } from 'matrix-js-sdk';
import { PackAddress } from '../custom-emoji/PackAddress';
import { SoundboardClipReader } from './SoundboardClipReader';
import { SoundboardClipsReader } from './SoundboardClipsReader';
import { SoundboardMetaReader } from './SoundboardMetaReader';
import { SoundboardContent } from './types';

/** Parallels custom-emoji/ImagePack. Holds a soundboard pack's meta + clips. */
export class SoundboardPack {
  public readonly id: string;

  public readonly deleted: boolean;

  public readonly address: PackAddress | undefined;

  public readonly meta: SoundboardMetaReader;

  public readonly clips: SoundboardClipsReader;

  private clipsMemo: SoundboardClipReader[] | undefined;

  constructor(id: string, content: SoundboardContent, address: PackAddress | undefined) {
    this.id = id;
    this.address = address;
    this.deleted = content.pack === undefined && content.clips === undefined;
    this.meta = new SoundboardMetaReader(content.pack ?? {});
    this.clips = new SoundboardClipsReader(content.clips ?? {});
  }

  static fromMatrixEvent(id: string, matrixEvent: MatrixEvent): SoundboardPack {
    const roomId = matrixEvent.getRoomId();
    const stateKey = matrixEvent.getStateKey();
    const address =
      roomId && typeof stateKey === 'string' ? new PackAddress(roomId, stateKey) : undefined;
    return new SoundboardPack(id, matrixEvent.getContent<SoundboardContent>(), address);
  }

  getClips(): SoundboardClipReader[] {
    if (this.clipsMemo) return this.clipsMemo;
    this.clipsMemo = Array.from(this.clips.collection.values());
    return this.clipsMemo;
  }

  getAvatarUrl(): string | undefined {
    if (this.meta.avatar) return this.meta.avatar;
    return undefined;
  }
}