async uploadPhoto(photo: any): Promise<{ photoLink: string, photoDeleteHash: string }> {
    if (!(/\.(gif|jpg|jpeg|png)$/i).test(extname(photo.originalname))) {
      throw new InvalidImageFormat();
    }

    const image = photo.buffer;

    const { data } = await axios(`${this.configService.photoStorageUrl}/upload`, {
      method: 'POST',
      headers: {
        'Authorization': this.configService.clientId,
        'Content-Type': 'multipart/form-data',
      },
      data: image,
    });

    return { photoLink: data.data.link, photoDeleteHash: data.data.deletehash };
  }