feat: enhance publish-proguard-plugin script to create GitHub releases

- Added functionality to read package information from package.json.
- Implemented logic to create a GitHub release if it does not already exist.
- Improved error handling for release creation process.
- Exited gracefully based on the presence of GitHub Actions environment variables.

Author: LuggaPugga

scripts/publish-proguard-plugin.ts

@@ -1,4 +1,5 @@
 import { spawnSync } from "node:child_process";
+import { readFileSync } from "node:fs";
 import { join } from "node:path";
 
 if (!process.env.REPOSITORY_TOKEN) {
@@ -16,4 +17,67 @@ const result = spawnSync(gradlew, ["publish"], {
 	shell: false,
 });
 
-process.exit(result.status ?? 1);
+if (result.status !== 0) {
+	process.exit(result.status ?? 1);
+}
+
+const pkg = JSON.parse(
+	readFileSync(join(pluginDir, "package.json"), "utf8"),
+) as { name: string; version: string };
+const tag = `${pkg.name}@${pkg.version}`;
+
+if (process.env.GITHUB_ACTIONS !== "true") {
+	process.exit(0);
+}
+
+const ghEnv = {
+	...process.env,
+	GH_TOKEN: process.env.GITHUB_TOKEN ?? process.env.GH_TOKEN ?? "",
+};
+
+if (!ghEnv.GH_TOKEN) {
+	process.exit(0);
+}
+
+const view = spawnSync("gh", ["release", "view", tag], {
+	env: ghEnv,
+	stdio: "pipe",
+});
+if (view.status === 0) {
+	process.exit(0);
+}
+
+const createArgs = [
+	"release",
+	"create",
+	tag,
+	"--title",
+	`${pkg.name} ${pkg.version} (Gradle)`,
+	"--notes",
+	"Gradle plugin published to Maven. Two coordinates are normal: the `proguard-plugin` jar and the plugin marker for `dev.faststats.proguard-mappings-upload` (required for the `plugins { id(...) }` block).",
+];
+if (process.env.GITHUB_SHA) {
+	createArgs.push("--target", process.env.GITHUB_SHA);
+}
+
+const created = spawnSync("gh", createArgs, {
+	env: ghEnv,
+	stdio: ["inherit", "inherit", "pipe"],
+	encoding: "utf8",
+});
+
+if (created.status !== 0) {
+	const err = created.stderr ?? "";
+	if (
+		err.includes("already_exists") ||
+		err.toLowerCase().includes("already exists")
+	) {
+		process.exit(0);
+	}
+	if (err) {
+		console.error(err);
+	}
+	process.exit(created.status ?? 1);
+}
+
+process.exit(0);