Method extractSlackFiles

src/runtime/adapters/slack.ts:814–853

* Extract file attachments from a Slack event. * Downloads files using the Bot Token for private URL access.

(
    event: any,
    channelId: string,
    _client: any,
  )

   * Downloads files using the Bot Token for private URL access.
   */
  private async extractSlackFiles(
    event: any,
    channelId: string,
    _client: any,
  ): Promise<ChannelAttachment[]> {
    const files = event.files;
    if (!Array.isArray(files) || files.length === 0) return [];

    const attachments: ChannelAttachment[] = [];

    for (const file of files) {
      try {
        const downloadUrl =
          file.url_private_download || file.url_private;
        if (!downloadUrl) {
          console.warn(
            `[Slack] No download URL for file: ${file.name || file.id}`,
          );
          continue;
        }

        const attachment = await downloadAndSaveAttachment(
          this.rootDir,
          channelId,
          downloadUrl,
          file.name || file.title || "file",
          file.mimetype,
          { Authorization: `Bearer ${this.options.botToken}` },
        );
        attachments.push(attachment);
      } catch (err) {
        console.error(
          `[Slack] Failed to download file ${file.name || file.id}:`,
          err,
        );
      }
    }

    return attachments;
  }

  /**
   * Send a file to the Slack channel/thread.