Check for latest version

src/NewCommand.php

@@ -82,6 +82,35 @@ protected function interact(InputInterface $input, OutputInterface $output)
   | |___| (_| | | | (_| |\ V /  __/ |
   |______\__,_|_|  \__,_| \_/ \___|_|</>'.PHP_EOL.PHP_EOL);
 
+        if ($this->existsNewerInstallerVersion()) {
+            $output->writeln(PHP_EOL.'  <bg=green;fg=white> NEW VERSION </> A newer version of Laravel Installer is available.'.PHP_EOL);
+
+            $shouldUpdate = select(
+                label: 'Do you want to update your Laravel Installer before continuing?',
+                options: [
+                    'yes' => 'Yes, please update the Laravel Installer',
+                    'no' => 'No, continue with the current version',
+                ],
+                default: 'yes',
+            );
+
+            if ($shouldUpdate === 'yes') {
+                $this->composer = new Composer(new Filesystem());
+
+                $output->writeln('  <bg=green;fg=white> NEW VERSION </> Updating Laravel Installer...'.PHP_EOL);
+
+                $this->runCommands([
+                    $this->findComposer().' global update laravel/installer',
+                ], $input, $output);
+
+                $output->writeln(PHP_EOL.'  <bg=green;fg=white> NEW VERSION </> The Laravel Installer was sucessfully updated.'.PHP_EOL);
+
+                $output->writeln('  <fg=gray>➜</> Please run <options=bold>laravel new</> again.'.PHP_EOL);
+
+                exit(0);
+            }
+        }
+
         if (! $input->getArgument('name')) {
             $input->setArgument('name', text(
                 label: 'What is the name of your project?',
@@ -894,4 +923,54 @@ protected function pregReplaceInFile(string $pattern, string $replace, string $f
             preg_replace($pattern, $replace, file_get_contents($file))
         );
     }
+
+    /**
+     * Check if there is a newer version of Laravel Installer.
+     */
+    protected function existsNewerInstallerVersion(): bool
+    {
+        $appVersion = $this->getApplication()->getVersion();
+        $latestVersion = $this->getLatestVersion();
+
+        return version_compare($appVersion, $latestVersion, '<');
+    }
+
+    /**
+     * Get latest version without leading "v".
+     */
+    protected function getLatestVersion(): string
+    {
+        $latestRelease = $this->getLatestRelease();
+
+        $tag = $latestRelease['tag_name'];
+
+        if (str_starts_with($tag, 'v')) {
+            $tag = substr($tag, 1);
+        }
+
+        return $tag;
+    }
+
+    /**
+     * Get latest release information.
+     */
+    protected function getLatestRelease(): array
+    {
+        // Required for GitHub API, otherwise the request will be 403 Forbidden
+        $context = stream_context_create([
+            'http' => [
+                'header' => [
+                    'User-Agent: Laravel Installer',
+                ],
+            ],
+        ]);
+
+        $json = file_get_contents(
+            'https://api.github.com/repos/laravel/installer/releases/latest',
+            false,
+            $context
+        );
+
+        return json_decode($json, true);
+    }
 }