Variable expiration handler

import { WebClient } from '@slack/web-api';

import dayjs from "dayjs";

type Slack = {

  token: string;

};

// The variable's value is deliberately not a parameter: job arguments and results are

// stored in cleartext and shown in Runs, so this handler is given a path to rotate and

// never a value to handle. Do not add one.

export async function main(

  workspace_id: string, // The workspace the variable belongs to

  variable_path: string, // The path of the variable whose value is expiring

  description: string, // The variable's description

  value_expires_at: string, // The datetime at which the value expires

  is_secret: boolean, // Whether the variable is a secret

  slack: Slack,

  channel: string,

) {

  const baseUrl = process.env["WM_BASE_URL"];

  const variablesUrl = `${baseUrl}/variables?workspace=${encodeURIComponent(workspace_id)}`;

  const expiry = dayjs(value_expires_at);

  const web = new WebClient(slack.token);

  const kind = is_secret ? "Secret" : "Variable";

  const expiresAt = expiry.format("DD.MM.YYYY HH:mm (Z)");

  const mdText =

    `*${kind} <${variablesUrl}|${variable_path}> is about to expire*\n- Expires at: ${expiresAt}`;

  await web.chat.postMessage({

    channel,

    text: `${kind} ${variable_path} expires at ${expiresAt}`,

    blocks: [

      {

        "type": "section",

        "text": {

          "type": "mrkdwn",

          "text": mdText,

        },

      },

    ],

    attachments: [

      {

        color: "#eab308",

        "blocks": [

          {

            "type": "section",

            "text": {

              "type": "mrkdwn",

              "text": description

                ? `Rotate it before it stops working.\n>${description}`

                : "Rotate it before it stops working.",

            },

          },

        ],

        fallback: `Rotate ${variable_path} before it stops working.`,

      },

    ],

  });

}