main.ts

import * as core from "@actions/core";
import * as github from "@actions/github";
import { PullRequest } from "@octokit/webhooks-types";

/**
 * The main function for the action.
 * @returns {Promise<void>} Resolves when the action is complete.
 */
export async function run(): Promise<void> {
  try {
    if (github.context.eventName === "pull_request") {
      const pullPayload = github.context.payload.pull_request as PullRequest;
      const body: string | null = pullPayload.body;

      if (!body) {
        core.setFailed(
          "No PR body provided. Please ensure you include the PR template."
        );
        return;
      }

      const lower: string = body.toLowerCase();
      const content: string = core.getInput("content").toLowerCase();

      if (!lower.includes(content)) {
        core.setFailed(`Content check for "${content}" was not successful.`);
        return;
      }

      core.setOutput("passed", "All content checks were successful!");
    }
  } catch (error) {
    // Fail the workflow run if an error occurs
    if (error instanceof Error) core.setFailed(error.message);
  }
}