Updated installer so that it no longer asks for a charset and instead just generates one

config/install-container.php

@@ -1,7 +1,8 @@
 <?php
 declare(strict_types=1);
 
-use Shlinkio\Shlink\Installer\Config\Plugin\DatabaseConfigCustomizer;
+use Shlinkio\Shlink\Core\Options\UrlShortenerOptions;
+use Shlinkio\Shlink\Installer\Config\Plugin;
 use Shlinkio\Shlink\Installer\Factory\InstallApplicationFactory;
 use Symfony\Component\Console\Application;
 use Symfony\Component\Filesystem\Filesystem;
@@ -19,9 +20,13 @@ $container = new ServiceManager([
         Filesystem::class => InvokableFactory::class,
     ],
     'services' => [
+        'random-chars-generator' => function () {
+            return str_shuffle(UrlShortenerOptions::DEFAULT_CHARS);
+        },
         'config' => [
             ConfigAbstractFactory::class => [
-                DatabaseConfigCustomizer::class => [Filesystem::class],
+                Plugin\DatabaseConfigCustomizer::class => [Filesystem::class],
+                Plugin\UrlShortenerConfigCustomizer::class => ['random-chars-generator'],
             ],
         ],
     ],

module/Core/src/Options/UrlShortenerOptions.php

@@ -7,7 +7,7 @@ use Zend\Stdlib\AbstractOptions;
 
 class UrlShortenerOptions extends AbstractOptions
 {
-    public const DEFAULT_CHARS = '123456789bcdfghjkmnpqrstvwxyzBCDFGHJKLMNPQRSTVWXYZ';
+    public const DEFAULT_CHARS = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
 
     // phpcs:disable
     protected $__strictMode__ = false;

module/Core/test/Service/UrlShortenerTest.php

@@ -71,13 +71,13 @@ class UrlShortenerTest extends TestCase
      */
     public function urlIsProperlyShortened(): void
     {
-        // 10 -> 12C1c
+        // 10 -> 0Q1Y
         $shortUrl = $this->urlShortener->urlToShortCode(
             new Uri('http://foobar.com/12345/hello?foo=bar'),
             [],
             ShortUrlMeta::createEmpty()
         );
-        $this->assertEquals('12C1c', $shortUrl->getShortCode());
+        $this->assertEquals('0Q1Y', $shortUrl->getShortCode());
     }
 
     /**
@@ -215,7 +215,6 @@ class UrlShortenerTest extends TestCase
      */
     public function shortCodeIsProperlyParsed(): void
     {
-        // 12C1c -> 10
         $shortCode = '12C1c';
         $shortUrl = new ShortUrl('expected_url');
         $shortUrl->setShortCode($shortCode);

module/Installer/src/Config/Plugin/UrlShortenerConfigCustomizer.php

@@ -3,13 +3,13 @@ declare(strict_types=1);
 
 namespace Shlinkio\Shlink\Installer\Config\Plugin;
 
-use Shlinkio\Shlink\Core\Options\UrlShortenerOptions;
 use Shlinkio\Shlink\Installer\Model\CustomizableAppConfig;
 use Shlinkio\Shlink\Installer\Util\AskUtilsTrait;
 use Symfony\Component\Console\Style\SymfonyStyle;
 use function array_diff;
 use function array_keys;
-use function str_shuffle;
+use function count;
+use function Functional\contains;
 
 class UrlShortenerConfigCustomizer implements ConfigCustomizerInterface
 {
@@ -30,6 +30,14 @@ class UrlShortenerConfigCustomizer implements ConfigCustomizerInterface
         self::NOT_FOUND_REDIRECT_TO,
     ];
 
+    /** @var callable */
+    private $randomCharsGenerator;
+
+    public function __construct(callable $randomCharsGenerator)
+    {
+        $this->randomCharsGenerator = $randomCharsGenerator;
+    }
+
     public function process(SymfonyStyle $io, CustomizableAppConfig $appConfig): void
     {
         $urlShortener = $appConfig->getUrlShortener();
@@ -40,7 +48,11 @@ class UrlShortenerConfigCustomizer implements ConfigCustomizerInterface
             return;
         }
 
+        // Print title if there are keys other than "chars"
+        $onlyKeyIsChars = count($keysToAskFor) === 1 && contains($keysToAskFor, self::CHARS);
+        if (! $onlyKeyIsChars) {
             $io->title('URL SHORTENER');
+        }
         foreach ($keysToAskFor as $key) {
             // Skip not found redirect URL when the user decided not to redirect
             if ($key === self::NOT_FOUND_REDIRECT_TO && ! $urlShortener[self::ENABLE_NOT_FOUND_REDIRECTION]) {
@@ -64,9 +76,8 @@ class UrlShortenerConfigCustomizer implements ConfigCustomizerInterface
             case self::HOSTNAME:
                 return $this->askRequired($io, 'hostname', 'Hostname for generated URLs');
             case self::CHARS:
-                return $io->ask(
-                    'Character set for generated short codes (leave empty to autogenerate one)'
-                ) ?: str_shuffle(UrlShortenerOptions::DEFAULT_CHARS);
+                // This won't actually ask anything, just generate the chars. Asking for this was confusing for users
+                return ($this->randomCharsGenerator)();
             case self::VALIDATE_URL:
                 return $io->confirm('Do you want to validate long urls by 200 HTTP status code on response');
             case self::ENABLE_NOT_FOUND_REDIRECTION:

module/Installer/src/Factory/InstallApplicationFactory.php

@@ -43,7 +43,7 @@ class InstallApplicationFactory implements FactoryInterface
             $container->get(Filesystem::class),
             new ConfigCustomizerManager($container, ['factories' => [
                 Plugin\DatabaseConfigCustomizer::class => ConfigAbstractFactory::class,
-                Plugin\UrlShortenerConfigCustomizer::class => InvokableFactory::class,
+                Plugin\UrlShortenerConfigCustomizer::class => ConfigAbstractFactory::class,
                 Plugin\LanguageConfigCustomizer::class => InvokableFactory::class,
                 Plugin\ApplicationConfigCustomizer::class => InvokableFactory::class,
             ]]),

module/Installer/test/Config/Plugin/UrlShortenerConfigCustomizerTest.php

@@ -21,7 +21,9 @@ class UrlShortenerConfigCustomizerTest extends TestCase
     {
         $this->io = $this->prophesize(SymfonyStyle::class);
         $this->io->title(Argument::any())->willReturn(null);
-        $this->plugin = new UrlShortenerConfigCustomizer();
+        $this->plugin = new UrlShortenerConfigCustomizer(function () {
+            return 'the_chars';
+        });
     }
 
     /**
@@ -40,12 +42,12 @@ class UrlShortenerConfigCustomizerTest extends TestCase
         $this->assertEquals([
             'SCHEMA' => 'chosen',
             'HOSTNAME' => 'asked',
-            'CHARS' => 'asked',
+            'CHARS' => 'the_chars',
             'VALIDATE_URL' => true,
             'ENABLE_NOT_FOUND_REDIRECTION' => true,
             'NOT_FOUND_REDIRECT_TO' => 'asked',
         ], $config->getUrlShortener());
-        $ask->shouldHaveBeenCalledTimes(3);
+        $ask->shouldHaveBeenCalledTimes(2);
         $choice->shouldHaveBeenCalledOnce();
         $confirm->shouldHaveBeenCalledTimes(2);
     }
@@ -61,7 +63,6 @@ class UrlShortenerConfigCustomizerTest extends TestCase
         $config = new CustomizableAppConfig();
         $config->setUrlShortener([
             'SCHEMA' => 'foo',
-            'HOSTNAME' => 'foo',
             'ENABLE_NOT_FOUND_REDIRECTION' => true,
             'NOT_FOUND_REDIRECT_TO' => 'foo',
         ]);
@@ -70,8 +71,8 @@ class UrlShortenerConfigCustomizerTest extends TestCase
 
         $this->assertEquals([
             'SCHEMA' => 'foo',
-            'HOSTNAME' => 'foo',
-            'CHARS' => 'asked',
+            'HOSTNAME' => 'asked',
+            'CHARS' => 'the_chars',
             'VALIDATE_URL' => false,
             'ENABLE_NOT_FOUND_REDIRECTION' => true,
             'NOT_FOUND_REDIRECT_TO' => 'foo',