deploy workflow

scripts/build-test-app.mjs

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+import { cp, mkdir, rm, stat, writeFile } from 'node:fs/promises';
+import { dirname, join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const rootDir = join(dirname(fileURLToPath(import.meta.url)), '..');
+const distDir = join(rootDir, 'dist');
+
+await rm(distDir, { force: true, recursive: true });
+await mkdir(distDir, { recursive: true });
+
+await copyRequired('index.html');
+await copyRequired('poster.jpg');
+await copyRequired('test-pages');
+await copyRequired('vr180player');
+await copyOptional('media');
+
+await writeFile(
+	join(distDir, '_headers'),
+	[
+		'/vr180player/*',
+		'  Cache-Control: public, max-age=3600',
+		'',
+		'/*',
+		'  Cache-Control: public, max-age=300',
+		''
+	].join('\n')
+);
+
+console.log(`Built test app in ${distDir}`);
+
+async function copyRequired(relativePath) {
+	const source = join(rootDir, relativePath);
+	const target = join(distDir, relativePath);
+	await cp(source, target, { recursive: true });
+}
+
+async function copyOptional(relativePath) {
+	const source = join(rootDir, relativePath);
+	if (!await pathExists(source)) {
+		console.warn(`Optional ${relativePath}/ directory not found; bundled sample media will not be included.`);
+		return;
+	}
+
+	await cp(source, join(distDir, relativePath), { recursive: true });
+}
+
+async function pathExists(path) {
+	try {
+		await stat(path);
+		return true;
+	} catch (error) {
+		if (error?.code === 'ENOENT') {
+			return false;
+		}
+
+		throw error;
+	}
+}