export async function getPullRequestNumber()

in src/pr-comment.ts [108:147]

33 lines of code
3 McCabe index (conditional complexity)


export async function getPullRequestNumber(
	config: PullRequestCommentConfig,
): Promise<number | undefined> {
	const { eventName } = context;
	const { pull_request } = context.payload;

	if (pull_request) {
		debug(
			`Identified PR number as ${pull_request.number} from payload. Trigger was ${eventName}.`,
		);
		return Promise.resolve(pull_request.number);
	}

	debug(`Attempting to get PR number from commit ${context.sha}`);

	const octokit = getOctokit(config.githubToken);

	const result = await octokit.rest.repos.listPullRequestsAssociatedWithCommit({
		...context.repo,
		commit_sha: context.sha,
	});

	const openPrs = result.data.filter(({ state }) => state === 'open');
	const pr =
		openPrs.find((_) => context.ref === `refs/heads/${_.head.ref}`) ??
		openPrs.at(0);

	if (!pr) {
		debug(
			`Failed to identify PR number from commit. Trigger was ${eventName}.`,
		);
		return undefined;
	}

	debug(
		`Identified PR number as ${pr.number} from commit. Trigger was ${eventName}.`,
	);
	debug(JSON.stringify(pr, null, 2));
	return pr.number;
}