public async getOriginalImage()

in source/image-handler/image-request.ts [103:143]
34 lines of code
7 McCabe index (conditional complexity)

  public async getOriginalImage(bucket: string, key: string): Promise<OriginalImageInfo> {
    try {
      const result: OriginalImageInfo = {};

      const imageLocation = { Bucket: bucket, Key: key };
      const originalImage = await this.s3Client.getObject(imageLocation).promise();
      const imageBuffer = Buffer.from(originalImage.Body as Uint8Array);

      if (originalImage.ContentType) {
        // If using default S3 ContentType infer from hex headers
        if (['binary/octet-stream', 'application/octet-stream'].includes(originalImage.ContentType)) {
          result.contentType = this.inferImageType(imageBuffer);
        } else {
          result.contentType = originalImage.ContentType;
        }
      } else {
        result.contentType = 'image';
      }

      if (originalImage.Expires) {
        result.expires = new Date(originalImage.Expires).toUTCString();
      }

      if (originalImage.LastModified) {
        result.lastModified = new Date(originalImage.LastModified).toUTCString();
      }

      result.cacheControl = originalImage.CacheControl ?? 'max-age=31536000,public';
      result.originalImage = imageBuffer;

      return result;
    } catch (error) {
      let status = StatusCodes.INTERNAL_SERVER_ERROR;
      let message = error.message;
      if (error.code === 'NoSuchKey') {
        status = StatusCodes.NOT_FOUND;
        message = `The image ${key} does not exist or the request may not be base64 encoded properly.`;
      }
      throw new ImageHandlerError(status, error.code, message);
    }
  }