text: import traceback
  import typer
  from slack_sdk import WebClient
  from slack_sdk.errors import SlackApiError
  
  SLACK_WELCOME_MESSAGE_TITLE = ":large_green_circle: INFO - Welcome to Robusta"
  SLACK_WELCOME_MESSAGE_HEADER_WITH_CLUSTER_NAME = (
      "You have signed up for Slack Monitoring on cluster: '{}'."
  )
  SLACK_WELCOME_THANK_YOU_MESSAGE = "Thank you for using Robusta.dev"
  SLACK_WELCOME_SUPPORT_MESSAGE = (
      "If you have any questions or feedback feel free to write us at "
      "<mailto:support@robusta.dev|support@robusta.dev> "
  )
  
  
  def verify_slack_channel(
      slack_api_key: str,
      cluster_name: str,
      channel_name: str,
      workspace: str,
      debug: bool,
  ) -> bool:
      try:
          output_welcome_message_blocks = gen_robusta_test_welcome_message(cluster_name)
          slack_client = WebClient(token=slack_api_key)
          slack_client.chat_postMessage(
              channel=channel_name,
              text="Welcome to Robusta",
              blocks=output_welcome_message_blocks,
              display_as_bot=True,
              unfurl_links=True,
              unfurl_media=True,
          )
          return True
      except SlackApiError as e:
          if e.response.data["error"] == "channel_not_found":
              channel_name_styled = typer.style(channel_name, fg=typer.colors.RED)
              typer.secho(
                  f"The channel {channel_name_styled} was not found on Slack workspace {workspace}.\n"
                  f"Please verify that the channel exists.\n"
                  f"If this is a private channel, verify the Robusta app was added to the channel."
                  f"(See https://docs.robusta.dev/master/catalog/sinks/slack.html#sending-robusta-notifications-to-a-private-channel)"
              )
          return False
      except Exception as e:
          if debug:
              typer.secho(traceback.format_exc())
      typer.secho(
          f"There was an unknown exception setting up Slack, please contact Robusta support.",
          fg=typer.colors.RED,
      )
      return False
  
  
  def gen_robusta_test_welcome_message(cluster_name: str):
      return [
          {
              "type": "header",
              "text": {
                  "type": "plain_text",
                  "text": SLACK_WELCOME_MESSAGE_TITLE,
                  "emoji": True,
              },
          },
          {
              "type": "header",
              "text": {
                  "type": "plain_text",
                  "text": SLACK_WELCOME_MESSAGE_HEADER_WITH_CLUSTER_NAME.format(
                      cluster_name
                  ),
                  "emoji": True,
              },
          },
          {
              "type": "section",
              "text": {"type": "mrkdwn", "text": SLACK_WELCOME_THANK_YOU_MESSAGE},
          },
          {
              "type": "section",
              "text": {"type": "mrkdwn", "text": SLACK_WELCOME_SUPPORT_MESSAGE},
          },
      ]
  