Use spinner in output

.scrutinizer.yml

@@ -1,6 +1,6 @@
 build:
   environment:
-    php: 7.1.12
+    php: 7.2
 
   nodes:
     analysis:

.travis.yml

@@ -1,7 +1,6 @@
 language: php
 
 php:
-  - 7.1
   - 7.2
   - 7.3
 

composer.json

@@ -11,14 +11,15 @@
         }
     ],
     "require": {
-        "php": "^7.1",
+        "php": "^7.2",
         "yosymfony/resource-watcher": "^2.0",
         "symfony/process": "^4.3",
         "symfony/console": "^4.3",
         "react/event-loop": "^1.1",
         "symfony/yaml": "^4.3",
         "react/child-process": "^0.6.1",
-        "ext-json": "*"
+        "ext-json": "*",
+        "alecrabbit/php-console-spinner": "^0.51.1"
     },
     "autoload": {
         "psr-4": {
@@ -34,6 +35,6 @@
         "php-watcher"
     ],
     "require-dev": {
-        "phpunit/phpunit": "^7.5"
+        "phpunit/phpunit": "^8.0"
     }
 }

src/Screen.php

@@ -3,6 +3,8 @@
 namespace seregazhuk\PhpWatcher;
 
 use React\ChildProcess\Process;
+use AlecRabbit\Spinner\SnakeSpinner;
+use React\EventLoop\LoopInterface;
 use seregazhuk\PhpWatcher\Config\WatchList;
 use Symfony\Component\Console\Application;
 use Symfony\Component\Console\Style\SymfonyStyle;
@@ -15,11 +17,14 @@ final class Screen
 
     private $appVersion;
 
+    private $spinner;
+
     public function __construct(SymfonyStyle $output, Application $application)
     {
         $this->output = $output;
         $this->appName = $application->getName();
         $this->appVersion = $application->getVersion();
+        $this->spinner = new SnakeSpinner();
     }
 
     public function showOptions(WatchList $watchList): void
@@ -62,6 +67,7 @@ public function start(string $command): void
 
     public function restarting(string $command): void
     {
+        $this->spinner->erase();
         $this->output->writeln('');
         $this->info('restarting due to changes...');
         $this->start($command);
@@ -74,6 +80,14 @@ public function subscribeToProcessOutput(Process $process): void
         });
     }
 
+    public function showSpinner(LoopInterface $loop): void
+    {
+        $loop->addPeriodicTimer($this->spinner->interval(), function () {
+            $this->spinner->spin();
+        });
+        $this->spinner->begin();
+    }
+
     private function message(string $text): string
     {
         return sprintf('[%s] %s', $this->appName, $text);

src/Watcher/Watcher.php

@@ -25,7 +25,7 @@ public function __construct(LoopInterface $loop, Screen $screen, ChangesListener
     public function startWatching(Process $process, float $delayToRestart): void
     {
         $this->screen->start($process->getCommand());
-
+        $this->screen->showSpinner($this->loop);
         $this->startProcess($process);
 
         $this->filesystemListener->start(function () use ($process, $delayToRestart) {

src/WatcherCommand.php

@@ -33,10 +33,9 @@ protected function configure(): void
     protected function execute(InputInterface $input, OutputInterface $output)
     {
         $config = (new Builder())->build($input);
-        $screen = new Screen(new SymfonyStyle($input, $output), $this->getApplication());
-
         $loop = Factory::create();
 
+        $screen = new Screen(new SymfonyStyle($input, $output), $this->getApplication());
         $filesystem = new ChangesListener($loop, $config->watchList());
         $watcher = new Watcher($loop, $screen, $filesystem);