Add support for working with tag pushes

Change-type: minor

src/action.ts

@@ -90,11 +90,21 @@ export async function run(
 	let buildOptions = null;
 
 	// If we are pushing directly to the target branch then just build a release without draft flag
-	if (context.eventName === 'push' && context.ref === `refs/heads/${target}`) {
+	if (
+		context.eventName === 'push' &&
+		(context.ref === `refs/heads/${target}` ||
+			context.ref.startsWith('refs/tags/'))
+	) {
+		// TODO: Update this to use ref_type & ref_name once that becomes available
+		// See: https://github.com/actions/toolkit/pull/935/files
+		const tagName = context.ref.match(/^refs\/tags\/(\w+)/)?.[1];
 		// Make a final release because context is master workflow
 		buildOptions = {
 			draft: false,
-			tags: { sha: context.sha },
+			tags: {
+				sha: context.sha,
+				...(!!tagName && { tag: tagName }),
+			},
 		};
 	} else if (context.eventName !== 'pull_request') {
 		// Make sure the only events now are Pull Requests

src/balena-utils.ts

@@ -5,9 +5,16 @@ import * as balena from 'balena-sdk';
 
 import { Release } from './types';
 
+const TagKeyMap = {
+	sha: 'balena-ci-commit-sha',
+	pullRequestId: 'balena-ci-id',
+	tag: 'balena-ci-git-tag',
+};
+
 type Tags = {
 	sha: string;
 	pullRequestId?: number;
+	tag?: string;
 };
 
 type BuildOptions = {
@@ -76,15 +83,12 @@ export async function push(
 		'--source',
 		source,
 		'--release-tag',
-		'balena-ci-commit-sha',
-		buildOpt.tags.sha,
+		...Object.entries(buildOpt.tags).flatMap(([key, value]) => [
+			TagKeyMap[key as keyof typeof TagKeyMap],
+			String(value),
+		]),
 	];
 
-	if (buildOpt.tags.pullRequestId) {
-		pushOpt.push('balena-ci-id');
-		pushOpt.push(buildOpt.tags.pullRequestId.toString());
-	}
-
 	if (buildOpt.draft) {
 		pushOpt.push('--draft');
 	}