Created new Installer module and moved everything from CLI there

module/Installer/config/translator.config.php

@@ -0,0 +1,16 @@
+<?php
+declare(strict_types=1);
+
+return [
+
+    'translator' => [
+        'translation_file_patterns' => [
+            [
+                'type' => 'gettext',
+                'base_dir' => __DIR__ . '/../lang',
+                'pattern' => '%s.mo',
+            ],
+        ],
+    ],
+
+];

module/Installer/src/Command/InstallCommand.php

@@ -0,0 +1,255 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Installer\Command;
+
+use Psr\Container\ContainerExceptionInterface;
+use Psr\Container\NotFoundExceptionInterface;
+use Shlinkio\Shlink\Installer\Config\ConfigCustomizerManagerInterface;
+use Shlinkio\Shlink\Installer\Config\Plugin;
+use Shlinkio\Shlink\Installer\Model\CustomizableAppConfig;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Exception\InvalidArgumentException;
+use Symfony\Component\Console\Exception\LogicException;
+use Symfony\Component\Console\Exception\RuntimeException;
+use Symfony\Component\Console\Helper\ProcessHelper;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+use Symfony\Component\Filesystem\Exception\IOException;
+use Symfony\Component\Filesystem\Filesystem;
+use Symfony\Component\Process\PhpExecutableFinder;
+use Zend\Config\Writer\WriterInterface;
+
+class InstallCommand extends Command
+{
+    public const GENERATED_CONFIG_PATH = 'config/params/generated_config.php';
+
+    /**
+     * @var SymfonyStyle
+     */
+    private $io;
+    /**
+     * @var ProcessHelper
+     */
+    private $processHelper;
+    /**
+     * @var WriterInterface
+     */
+    private $configWriter;
+    /**
+     * @var Filesystem
+     */
+    private $filesystem;
+    /**
+     * @var \Shlinkio\Shlink\Installer\Config\ConfigCustomizerManagerInterface
+     */
+    private $configCustomizers;
+    /**
+     * @var bool
+     */
+    private $isUpdate;
+    /**
+     * @var PhpExecutableFinder
+     */
+    private $phpFinder;
+    /**
+     * @var string|bool
+     */
+    private $phpBinary;
+
+    /**
+     * InstallCommand constructor.
+     * @param WriterInterface $configWriter
+     * @param Filesystem $filesystem
+     * @param ConfigCustomizerManagerInterface $configCustomizers
+     * @param bool $isUpdate
+     * @param PhpExecutableFinder|null $phpFinder
+     * @throws LogicException
+     */
+    public function __construct(
+        WriterInterface $configWriter,
+        Filesystem $filesystem,
+        ConfigCustomizerManagerInterface $configCustomizers,
+        bool $isUpdate = false,
+        PhpExecutableFinder $phpFinder = null
+    ) {
+        parent::__construct();
+        $this->configWriter = $configWriter;
+        $this->isUpdate = $isUpdate;
+        $this->filesystem = $filesystem;
+        $this->configCustomizers = $configCustomizers;
+        $this->phpFinder = $phpFinder ?: new PhpExecutableFinder();
+    }
+
+    protected function configure(): void
+    {
+        $this
+            ->setName('shlink:install')
+            ->setDescription('Installs or updates Shlink');
+    }
+
+    /**
+     * @param InputInterface $input
+     * @param OutputInterface $output
+     * @return void
+     * @throws ContainerExceptionInterface
+     * @throws NotFoundExceptionInterface
+     */
+    protected function execute(InputInterface $input, OutputInterface $output): void
+    {
+        $this->io = new SymfonyStyle($input, $output);
+
+        $this->io->writeln([
+            '<info>Welcome to Shlink!!</info>',
+            'This tool will guide you through the installation process.',
+        ]);
+
+        // Check if a cached config file exists and drop it if so
+        if ($this->filesystem->exists('data/cache/app_config.php')) {
+            $this->io->write('Deleting old cached config...');
+            try {
+                $this->filesystem->remove('data/cache/app_config.php');
+                $this->io->writeln(' <info>Success</info>');
+            } catch (IOException $e) {
+                $this->io->error(
+                    'Failed! You will have to manually delete the data/cache/app_config.php file to'
+                    . ' get new config applied.'
+                );
+                if ($this->io->isVerbose()) {
+                    $this->getApplication()->renderException($e, $output);
+                }
+                return;
+            }
+        }
+
+        // If running update command, ask the user to import previous config
+        $config = $this->isUpdate ? $this->importConfig() : new CustomizableAppConfig();
+
+        // Ask for custom config params
+        foreach ([
+            Plugin\DatabaseConfigCustomizer::class,
+            Plugin\UrlShortenerConfigCustomizer::class,
+            Plugin\LanguageConfigCustomizer::class,
+            Plugin\ApplicationConfigCustomizer::class,
+        ] as $pluginName) {
+            /** @var Plugin\ConfigCustomizerInterface $configCustomizer */
+            $configCustomizer = $this->configCustomizers->get($pluginName);
+            $configCustomizer->process($this->io, $config);
+        }
+
+        // Generate config params files
+        $this->configWriter->toFile(self::GENERATED_CONFIG_PATH, $config->getArrayCopy(), false);
+        $this->io->writeln(['<info>Custom configuration properly generated!</info>', '']);
+
+        // If current command is not update, generate database
+        if (!  $this->isUpdate) {
+            $this->io->write('Initializing database...');
+            if (! $this->runPhpCommand(
+                'vendor/doctrine/orm/bin/doctrine.php orm:schema-tool:create',
+                'Error generating database.',
+                $output
+            )) {
+                return;
+            }
+        }
+
+        // Run database migrations
+        $this->io->write('Updating database...');
+        if (! $this->runPhpCommand(
+            'vendor/doctrine/migrations/bin/doctrine-migrations.php migrations:migrate',
+            'Error updating database.',
+            $output
+        )) {
+            return;
+        }
+
+        // Generate proxies
+        $this->io->write('Generating proxies...');
+        if (! $this->runPhpCommand(
+            'vendor/doctrine/orm/bin/doctrine.php orm:generate-proxies',
+            'Error generating proxies.',
+            $output
+        )) {
+            return;
+        }
+
+        $this->io->success('Installation complete!');
+    }
+
+    /**
+     * @return CustomizableAppConfig
+     * @throws RuntimeException
+     */
+    private function importConfig(): CustomizableAppConfig
+    {
+        $config = new CustomizableAppConfig();
+
+        // Ask the user if he/she wants to import an older configuration
+        $importConfig = $this->io->confirm('Do you want to import configuration from previous installation?');
+        if (! $importConfig) {
+            return $config;
+        }
+
+        // Ask the user for the older shlink path
+        $keepAsking = true;
+        do {
+            $config->setImportedInstallationPath($this->io->ask(
+                'Previous shlink installation path from which to import config'
+            ));
+            $configFile = $config->getImportedInstallationPath() . '/' . self::GENERATED_CONFIG_PATH;
+            $configExists = $this->filesystem->exists($configFile);
+
+            if (! $configExists) {
+                $keepAsking = $this->io->confirm(
+                    'Provided path does not seem to be a valid shlink root path. Do you want to try another path?'
+                );
+            }
+        } while (! $configExists && $keepAsking);
+
+        // If after some retries the user has chosen not to test another path, return
+        if (! $configExists) {
+            return $config;
+        }
+
+        // Read the config file
+        $config->exchangeArray(include $configFile);
+        return $config;
+    }
+
+    /**
+     * @param string $command
+     * @param string $errorMessage
+     * @param OutputInterface $output
+     * @return bool
+     * @throws LogicException
+     * @throws InvalidArgumentException
+     */
+    private function runPhpCommand($command, $errorMessage, OutputInterface $output): bool
+    {
+        if ($this->processHelper === null) {
+            $this->processHelper = $this->getHelper('process');
+        }
+
+        if ($this->phpBinary === null) {
+            $this->phpBinary = $this->phpFinder->find(false) ?: 'php';
+        }
+
+        $this->io->write(
+            ' <options=bold>[Running "' . sprintf('%s %s', $this->phpBinary, $command) . '"]</> ',
+            false,
+            OutputInterface::VERBOSITY_VERBOSE
+        );
+        $process = $this->processHelper->run($output, sprintf('%s %s', $this->phpBinary, $command));
+        if ($process->isSuccessful()) {
+            $this->io->writeln(' <info>Success!</info>');
+            return true;
+        }
+
+        if (! $this->io->isVerbose()) {
+            $this->io->error($errorMessage . '  Run this command with -vvv to see specific error info.');
+        }
+
+        return false;
+    }
+}

module/Installer/src/Config/ConfigCustomizerManager.php

@@ -0,0 +1,12 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Installer\Config;
+
+use Shlinkio\Shlink\Installer\Config\Plugin\ConfigCustomizerInterface;
+use Zend\ServiceManager\AbstractPluginManager;
+
+class ConfigCustomizerManager extends AbstractPluginManager implements ConfigCustomizerManagerInterface
+{
+    protected $instanceOf = ConfigCustomizerInterface::class;
+}

module/Installer/src/Config/ConfigCustomizerManagerInterface.php

@@ -0,0 +1,10 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Installer\Config;
+
+use Psr\Container\ContainerInterface;
+
+interface ConfigCustomizerManagerInterface extends ContainerInterface
+{
+}

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

@@ -0,0 +1,44 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Installer\Config\Plugin;
+
+use Shlinkio\Shlink\Common\Util\StringUtilsTrait;
+use Shlinkio\Shlink\Installer\Model\CustomizableAppConfig;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+class ApplicationConfigCustomizer implements ConfigCustomizerInterface
+{
+    use StringUtilsTrait;
+
+    /**
+     * @param SymfonyStyle $io
+     * @param CustomizableAppConfig $appConfig
+     * @return void
+     */
+    public function process(SymfonyStyle $io, CustomizableAppConfig $appConfig)
+    {
+        $io->title('APPLICATION');
+
+        if ($appConfig->hasApp() && $io->confirm('Do you want to keep imported application config?')) {
+            return;
+        }
+
+        $validator = function ($value) {
+            return $value;
+        };
+        $appConfig->setApp([
+            'SECRET' => $io->ask(
+                'Define a secret string that will be used to sign API tokens (leave empty to autogenerate one)',
+                null,
+                $validator
+            ) ?: $this->generateRandomString(32),
+            'DISABLE_TRACK_PARAM' => $io->ask(
+                'Provide a parameter name that you will be able to use to disable tracking on specific request to '
+                . 'short URLs (leave empty and this feature won\'t be enabled)',
+                null,
+                $validator
+            ),
+        ]);
+    }
+}

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

@@ -0,0 +1,17 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Installer\Config\Plugin;
+
+use Shlinkio\Shlink\Installer\Model\CustomizableAppConfig;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+interface ConfigCustomizerInterface
+{
+    /**
+     * @param SymfonyStyle $io
+     * @param CustomizableAppConfig $appConfig
+     * @return void
+     */
+    public function process(SymfonyStyle $io, CustomizableAppConfig $appConfig);
+}

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

@@ -0,0 +1,79 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Installer\Config\Plugin;
+
+use Shlinkio\Shlink\Installer\Config\Plugin\ConfigCustomizerInterface;
+use Shlinkio\Shlink\Installer\Model\CustomizableAppConfig;
+use Symfony\Component\Console\Style\SymfonyStyle;
+use Symfony\Component\Filesystem\Exception\IOException;
+use Symfony\Component\Filesystem\Filesystem;
+
+class DatabaseConfigCustomizer implements ConfigCustomizerInterface
+{
+    private const DATABASE_DRIVERS = [
+        'MySQL' => 'pdo_mysql',
+        'PostgreSQL' => 'pdo_pgsql',
+        'SQLite' => 'pdo_sqlite',
+    ];
+
+    /**
+     * @var Filesystem
+     */
+    private $filesystem;
+
+    public function __construct(Filesystem $filesystem)
+    {
+        $this->filesystem = $filesystem;
+    }
+
+    /**
+     * @param SymfonyStyle $io
+     * @param CustomizableAppConfig $appConfig
+     * @return void
+     * @throws IOException
+     */
+    public function process(SymfonyStyle $io, CustomizableAppConfig $appConfig)
+    {
+        $io->title('DATABASE');
+
+        if ($appConfig->hasDatabase() && $io->confirm('Do you want to keep imported database config?')) {
+            // If the user selected to keep DB config and is configured to use sqlite, copy DB file
+            if ($appConfig->getDatabase()['DRIVER'] === self::DATABASE_DRIVERS['SQLite']) {
+                try {
+                    $this->filesystem->copy(
+                        $appConfig->getImportedInstallationPath() . '/' . CustomizableAppConfig::SQLITE_DB_PATH,
+                        CustomizableAppConfig::SQLITE_DB_PATH
+                    );
+                } catch (IOException $e) {
+                    $io->error('It wasn\'t possible to import the SQLite database');
+                    throw $e;
+                }
+            }
+
+            return;
+        }
+
+        // Select database type
+        $params = [];
+        $databases = \array_keys(self::DATABASE_DRIVERS);
+        $dbType = $io->choice('Select database type', $databases, $databases[0]);
+        $params['DRIVER'] = self::DATABASE_DRIVERS[$dbType];
+
+        // Ask for connection params if database is not SQLite
+        if ($params['DRIVER'] !== self::DATABASE_DRIVERS['SQLite']) {
+            $params['NAME'] = $io->ask('Database name', 'shlink');
+            $params['USER'] = $io->ask('Database username');
+            $params['PASSWORD'] = $io->ask('Database password');
+            $params['HOST'] = $io->ask('Database host', 'localhost');
+            $params['PORT'] = $io->ask('Database port', $this->getDefaultDbPort($params['DRIVER']));
+        }
+
+        $appConfig->setDatabase($params);
+    }
+
+    private function getDefaultDbPort(string $driver): string
+    {
+        return $driver === 'pdo_mysql' ? '3306' : '5432';
+    }
+}

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

@@ -0,0 +1,37 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Installer\Config\Plugin;
+
+use Shlinkio\Shlink\Installer\Config\Plugin\ConfigCustomizerInterface;
+use Shlinkio\Shlink\Installer\Model\CustomizableAppConfig;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+class LanguageConfigCustomizer implements ConfigCustomizerInterface
+{
+    private const SUPPORTED_LANGUAGES = ['en', 'es'];
+
+    /**
+     * @param SymfonyStyle $io
+     * @param \Shlinkio\Shlink\Installer\Model\CustomizableAppConfig $appConfig
+     * @return void
+     */
+    public function process(SymfonyStyle $io, CustomizableAppConfig $appConfig)
+    {
+        $io->title('LANGUAGE');
+
+        if ($appConfig->hasLanguage() && $io->confirm('Do you want to keep imported language?')) {
+            return;
+        }
+
+        $appConfig->setLanguage([
+            'DEFAULT' => $this->chooseLanguage('Select default language for the application in general', $io),
+            'CLI' => $this->chooseLanguage('Select default language for CLI executions', $io),
+        ]);
+    }
+
+    private function chooseLanguage(string $message, SymfonyStyle $io): string
+    {
+        return $io->choice($message, self::SUPPORTED_LANGUAGES, self::SUPPORTED_LANGUAGES[0]);
+    }
+}

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

@@ -0,0 +1,44 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Installer\Config\Plugin;
+
+use Shlinkio\Shlink\Core\Service\UrlShortener;
+use Shlinkio\Shlink\Installer\Model\CustomizableAppConfig;
+use Symfony\Component\Console\Style\SymfonyStyle;
+use function str_shuffle;
+
+class UrlShortenerConfigCustomizer implements ConfigCustomizerInterface
+{
+    /**
+     * @param SymfonyStyle $io
+     * @param CustomizableAppConfig $appConfig
+     * @return void
+     */
+    public function process(SymfonyStyle $io, CustomizableAppConfig $appConfig)
+    {
+        $io->title('URL SHORTENER');
+
+        if ($appConfig->hasUrlShortener() && $io->confirm('Do you want to keep imported URL shortener config?')) {
+            return;
+        }
+
+        // Ask for URL shortener params
+        $appConfig->setUrlShortener([
+            'SCHEMA' => $io->choice(
+                'Select schema for generated short URLs',
+                ['http', 'https'],
+                'http'
+            ),
+            'HOSTNAME' => $io->ask('Hostname for generated URLs'),
+            'CHARS' => $io->ask(
+                'Character set for generated short codes (leave empty to autogenerate one)',
+                null,
+                function ($value) {
+                    return $value;
+                }
+            ) ?: str_shuffle(UrlShortener::DEFAULT_CHARS),
+            'VALIDATE_URL' => $io->confirm('Do you want to validate long urls by 200 HTTP status code on response'),
+        ]);
+    }
+}

module/Installer/src/ConfigProvider.php

@@ -0,0 +1,15 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Installer;
+
+use Zend\Config\Factory;
+use Zend\Stdlib\Glob;
+
+class ConfigProvider
+{
+    public function __invoke()
+    {
+        return Factory::fromFiles(Glob::glob(__DIR__ . '/../config/{,*.}config.php', Glob::GLOB_BRACE));
+    }
+}

module/Installer/src/Factory/InstallApplicationFactory.php

@@ -0,0 +1,57 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Installer\Factory;
+
+use Interop\Container\ContainerInterface;
+use Interop\Container\Exception\ContainerException;
+use Shlinkio\Shlink\Installer\Command\InstallCommand;
+use Shlinkio\Shlink\Installer\Config\ConfigCustomizerManager;
+use Shlinkio\Shlink\Installer\Config\Plugin;
+use Symfony\Component\Console\Application;
+use Symfony\Component\Console\Exception\LogicException;
+use Symfony\Component\Filesystem\Filesystem;
+use Zend\Config\Writer\PhpArray;
+use Zend\ServiceManager\AbstractFactory\ConfigAbstractFactory;
+use Zend\ServiceManager\Exception\ServiceNotCreatedException;
+use Zend\ServiceManager\Exception\ServiceNotFoundException;
+use Zend\ServiceManager\Factory\FactoryInterface;
+use Zend\ServiceManager\Factory\InvokableFactory;
+
+class InstallApplicationFactory implements FactoryInterface
+{
+    /**
+     * Create an object
+     *
+     * @param  ContainerInterface $container
+     * @param  string $requestedName
+     * @param  null|array $options
+     * @return object
+     * @throws LogicException
+     * @throws ServiceNotFoundException if unable to resolve the service.
+     * @throws ServiceNotCreatedException if an exception is raised when
+     *     creating a service.
+     * @throws ContainerException if any other error occurs
+     */
+    public function __invoke(ContainerInterface $container, $requestedName, array $options = null)
+    {
+        $isUpdate = $options !== null && isset($options['isUpdate']) ? (bool) $options['isUpdate'] : false;
+
+        $app = new Application();
+        $command = new InstallCommand(
+            new PhpArray(),
+            $container->get(Filesystem::class),
+            new ConfigCustomizerManager($container, ['factories' => [
+                Plugin\DatabaseConfigCustomizer::class => ConfigAbstractFactory::class,
+                Plugin\UrlShortenerConfigCustomizer::class => InvokableFactory::class,
+                Plugin\LanguageConfigCustomizer::class => InvokableFactory::class,
+                Plugin\ApplicationConfigCustomizer::class => InvokableFactory::class,
+            ]]),
+            $isUpdate
+        );
+        $app->add($command);
+        $app->setDefaultCommand($command->getName(), true);
+
+        return $app;
+    }
+}

module/Installer/src/Model/CustomizableAppConfig.php

@@ -0,0 +1,270 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Installer\Model;
+
+use Zend\Stdlib\ArraySerializableInterface;
+
+final class CustomizableAppConfig implements ArraySerializableInterface
+{
+    public const SQLITE_DB_PATH = 'data/database.sqlite';
+
+    /**
+     * @var array
+     */
+    private $database;
+    /**
+     * @var array
+     */
+    private $urlShortener;
+    /**
+     * @var array
+     */
+    private $language;
+    /**
+     * @var array
+     */
+    private $app;
+    /**
+     * @var string
+     */
+    private $importedInstallationPath;
+
+    /**
+     * @return array
+     */
+    public function getDatabase()
+    {
+        return $this->database;
+    }
+
+    /**
+     * @param array $database
+     * @return $this
+     */
+    public function setDatabase(array $database)
+    {
+        $this->database = $database;
+        return $this;
+    }
+
+    /**
+     * @return bool
+     */
+    public function hasDatabase()
+    {
+        return ! empty($this->database);
+    }
+
+    /**
+     * @return array
+     */
+    public function getUrlShortener()
+    {
+        return $this->urlShortener;
+    }
+
+    /**
+     * @param array $urlShortener
+     * @return $this
+     */
+    public function setUrlShortener(array $urlShortener)
+    {
+        $this->urlShortener = $urlShortener;
+        return $this;
+    }
+
+    /**
+     * @return bool
+     */
+    public function hasUrlShortener()
+    {
+        return ! empty($this->urlShortener);
+    }
+
+    /**
+     * @return array
+     */
+    public function getLanguage()
+    {
+        return $this->language;
+    }
+
+    /**
+     * @param array $language
+     * @return $this
+     */
+    public function setLanguage(array $language)
+    {
+        $this->language = $language;
+        return $this;
+    }
+
+    /**
+     * @return bool
+     */
+    public function hasLanguage()
+    {
+        return ! empty($this->language);
+    }
+
+    /**
+     * @return array
+     */
+    public function getApp()
+    {
+        return $this->app;
+    }
+
+    /**
+     * @param array $app
+     * @return $this
+     */
+    public function setApp(array $app)
+    {
+        $this->app = $app;
+        return $this;
+    }
+
+    /**
+     * @return bool
+     */
+    public function hasApp()
+    {
+        return ! empty($this->app);
+    }
+
+    /**
+     * @return string
+     */
+    public function getImportedInstallationPath()
+    {
+        return $this->importedInstallationPath;
+    }
+
+    /**
+     * @param string $importedInstallationPath
+     * @return $this|self
+     */
+    public function setImportedInstallationPath($importedInstallationPath)
+    {
+        $this->importedInstallationPath = $importedInstallationPath;
+        return $this;
+    }
+
+    /**
+     * @return bool
+     */
+    public function hasImportedInstallationPath()
+    {
+        return $this->importedInstallationPath !== null;
+    }
+
+    /**
+     * Exchange internal values from provided array
+     *
+     * @param array $array
+     * @return void
+     */
+    public function exchangeArray(array $array)
+    {
+        if (isset($array['app_options'], $array['app_options']['secret_key'])) {
+            $this->setApp([
+                'SECRET' => $array['app_options']['secret_key'],
+            ]);
+        }
+
+        if (isset($array['entity_manager'], $array['entity_manager']['connection'])) {
+            $this->deserializeDatabase($array['entity_manager']['connection']);
+        }
+
+        if (isset($array['translator'], $array['translator']['locale'], $array['cli'], $array['cli']['locale'])) {
+            $this->setLanguage([
+                'DEFAULT' => $array['translator']['locale'],
+                'CLI' => $array['cli']['locale'],
+            ]);
+        }
+
+        if (isset($array['url_shortener'])) {
+            $urlShortener = $array['url_shortener'];
+            $this->setUrlShortener([
+                'SCHEMA' => $urlShortener['domain']['schema'],
+                'HOSTNAME' => $urlShortener['domain']['hostname'],
+                'CHARS' => $urlShortener['shortcode_chars'],
+                'VALIDATE_URL' => $urlShortener['validate_url'] ?? true,
+            ]);
+        }
+    }
+
+    private function deserializeDatabase(array $conn)
+    {
+        if (! isset($conn['driver'])) {
+            return;
+        }
+        $driver = $conn['driver'];
+
+        $params = ['DRIVER' => $driver];
+        if ($driver !== 'pdo_sqlite') {
+            $params['USER'] = $conn['user'];
+            $params['PASSWORD'] = $conn['password'];
+            $params['NAME'] = $conn['dbname'];
+            $params['HOST'] = $conn['host'];
+            $params['PORT'] = $conn['port'];
+        }
+
+        $this->setDatabase($params);
+    }
+
+    /**
+     * Return an array representation of the object
+     *
+     * @return array
+     */
+    public function getArrayCopy()
+    {
+        $config = [
+            'app_options' => [
+                'secret_key' => $this->app['SECRET'],
+                'disable_track_param' => $this->app['DISABLE_TRACK_PARAM'] ?? null,
+            ],
+            'entity_manager' => [
+                'connection' => [
+                    'driver' => $this->database['DRIVER'],
+                ],
+            ],
+            'translator' => [
+                'locale' => $this->language['DEFAULT'],
+            ],
+            'cli' => [
+                'locale' => $this->language['CLI'],
+            ],
+            'url_shortener' => [
+                'domain' => [
+                    'schema' => $this->urlShortener['SCHEMA'],
+                    'hostname' => $this->urlShortener['HOSTNAME'],
+                ],
+                'shortcode_chars' => $this->urlShortener['CHARS'],
+                'validate_url' => $this->urlShortener['VALIDATE_URL'],
+            ],
+        ];
+
+        // Build dynamic database config based on selected driver
+        if ($this->database['DRIVER'] === 'pdo_sqlite') {
+            $config['entity_manager']['connection']['path'] = self::SQLITE_DB_PATH;
+        } else {
+            $config['entity_manager']['connection']['user'] = $this->database['USER'];
+            $config['entity_manager']['connection']['password'] = $this->database['PASSWORD'];
+            $config['entity_manager']['connection']['dbname'] = $this->database['NAME'];
+            $config['entity_manager']['connection']['host'] = $this->database['HOST'];
+            $config['entity_manager']['connection']['port'] = $this->database['PORT'];
+
+            if ($this->database['DRIVER'] === 'pdo_mysql') {
+                $config['entity_manager']['connection']['driverOptions'] = [
+                    \PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8',
+                ];
+            }
+        }
+
+        return $config;
+    }
+}

module/Installer/test-resources/config/params/generated_config.php

@@ -0,0 +1,2 @@
+<?php
+return [];

module/Installer/test/Command/InstallCommandTest.php

@@ -0,0 +1,147 @@
+<?php
+declare(strict_types=1);
+
+namespace ShlinkioTest\Shlink\Installer\Command;
+
+use PHPUnit\Framework\TestCase;
+use Prophecy\Argument;
+use Prophecy\Prophecy\MethodProphecy;
+use Prophecy\Prophecy\ObjectProphecy;
+use Shlinkio\Shlink\Installer\Command\InstallCommand;
+use Shlinkio\Shlink\Installer\Config\ConfigCustomizerManagerInterface;
+use Shlinkio\Shlink\Installer\Config\Plugin\ConfigCustomizerInterface;
+use Symfony\Component\Console\Application;
+use Symfony\Component\Console\Helper\ProcessHelper;
+use Symfony\Component\Console\Tester\CommandTester;
+use Symfony\Component\Filesystem\Exception\IOException;
+use Symfony\Component\Filesystem\Filesystem;
+use Symfony\Component\Process\PhpExecutableFinder;
+use Symfony\Component\Process\Process;
+use Zend\Config\Writer\WriterInterface;
+
+class InstallCommandTest extends TestCase
+{
+    /**
+     * @var InstallCommand
+     */
+    protected $command;
+    /**
+     * @var CommandTester
+     */
+    protected $commandTester;
+    /**
+     * @var ObjectProphecy
+     */
+    protected $configWriter;
+    /**
+     * @var ObjectProphecy
+     */
+    protected $filesystem;
+
+    public function setUp()
+    {
+        $processMock = $this->prophesize(Process::class);
+        $processMock->isSuccessful()->willReturn(true);
+        $processHelper = $this->prophesize(ProcessHelper::class);
+        $processHelper->getName()->willReturn('process');
+        $processHelper->setHelperSet(Argument::any())->willReturn(null);
+        $processHelper->run(Argument::cetera())->willReturn($processMock->reveal());
+
+        $this->filesystem = $this->prophesize(Filesystem::class);
+        $this->filesystem->exists(Argument::cetera())->willReturn(false);
+
+        $this->configWriter = $this->prophesize(WriterInterface::class);
+
+        $configCustomizer = $this->prophesize(ConfigCustomizerInterface::class);
+        $configCustomizers = $this->prophesize(ConfigCustomizerManagerInterface::class);
+        $configCustomizers->get(Argument::cetera())->willReturn($configCustomizer->reveal());
+
+        $finder = $this->prophesize(PhpExecutableFinder::class);
+        $finder->find(false)->willReturn('php');
+
+        $app = new Application();
+        $helperSet = $app->getHelperSet();
+        $helperSet->set($processHelper->reveal());
+        $app->setHelperSet($helperSet);
+        $this->command = new InstallCommand(
+            $this->configWriter->reveal(),
+            $this->filesystem->reveal(),
+            $configCustomizers->reveal(),
+            false,
+            $finder->reveal()
+        );
+        $app->add($this->command);
+
+        $this->commandTester = new CommandTester($this->command);
+    }
+
+    /**
+     * @test
+     */
+    public function generatedConfigIsProperlyPersisted()
+    {
+        $this->configWriter->toFile(Argument::any(), Argument::type('array'), false)->shouldBeCalledTimes(1);
+        $this->commandTester->execute([]);
+    }
+
+    /**
+     * @test
+     */
+    public function cachedConfigIsDeletedIfExists()
+    {
+        /** @var MethodProphecy $appConfigExists */
+        $appConfigExists = $this->filesystem->exists('data/cache/app_config.php')->willReturn(true);
+        /** @var MethodProphecy $appConfigRemove */
+        $appConfigRemove = $this->filesystem->remove('data/cache/app_config.php')->willReturn(null);
+
+        $this->commandTester->execute([]);
+
+        $appConfigExists->shouldHaveBeenCalledTimes(1);
+        $appConfigRemove->shouldHaveBeenCalledTimes(1);
+    }
+
+    /**
+     * @test
+     */
+    public function exceptionWhileDeletingCachedConfigCancelsProcess()
+    {
+        /** @var MethodProphecy $appConfigExists */
+        $appConfigExists = $this->filesystem->exists('data/cache/app_config.php')->willReturn(true);
+        /** @var MethodProphecy $appConfigRemove */
+        $appConfigRemove = $this->filesystem->remove('data/cache/app_config.php')->willThrow(IOException::class);
+        /** @var MethodProphecy $configToFile */
+        $configToFile = $this->configWriter->toFile(Argument::cetera())->willReturn(true);
+
+        $this->commandTester->execute([]);
+
+        $appConfigExists->shouldHaveBeenCalledTimes(1);
+        $appConfigRemove->shouldHaveBeenCalledTimes(1);
+        $configToFile->shouldNotHaveBeenCalled();
+    }
+
+    /**
+     * @test
+     */
+    public function whenCommandIsUpdatePreviousConfigCanBeImported()
+    {
+        $ref = new \ReflectionObject($this->command);
+        $prop = $ref->getProperty('isUpdate');
+        $prop->setAccessible(true);
+        $prop->setValue($this->command, true);
+
+        /** @var MethodProphecy $importedConfigExists */
+        $importedConfigExists = $this->filesystem->exists(
+            __DIR__ . '/../../test-resources/' . InstallCommand::GENERATED_CONFIG_PATH
+        )->willReturn(true);
+
+        $this->commandTester->setInputs([
+            '',
+            '/foo/bar/wrong_previous_shlink',
+            '',
+            __DIR__ . '/../../test-resources',
+        ]);
+        $this->commandTester->execute([]);
+
+        $importedConfigExists->shouldHaveBeenCalled();
+    }
+}

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

@@ -0,0 +1,91 @@
+<?php
+declare(strict_types=1);
+
+namespace ShlinkioTest\Shlink\Installer\Config\Plugin;
+
+use PHPUnit\Framework\TestCase;
+use Prophecy\Argument;
+use Prophecy\Prophecy\ObjectProphecy;
+use Shlinkio\Shlink\Installer\Config\Plugin\ApplicationConfigCustomizer;
+use Shlinkio\Shlink\Installer\Model\CustomizableAppConfig;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+class ApplicationConfigCustomizerTest extends TestCase
+{
+    /**
+     * @var ApplicationConfigCustomizer
+     */
+    private $plugin;
+    /**
+     * @var ObjectProphecy
+     */
+    private $io;
+
+    public function setUp()
+    {
+        $this->io = $this->prophesize(SymfonyStyle::class);
+        $this->io->title(Argument::any())->willReturn(null);
+
+        $this->plugin = new ApplicationConfigCustomizer();
+    }
+
+    /**
+     * @test
+     */
+    public function configIsRequestedToTheUser()
+    {
+        $ask = $this->io->ask(Argument::cetera())->willReturn('the_secret');
+        $config = new CustomizableAppConfig();
+
+        $this->plugin->process($this->io->reveal(), $config);
+
+        $this->assertTrue($config->hasApp());
+        $this->assertEquals([
+            'SECRET' => 'the_secret',
+            'DISABLE_TRACK_PARAM' => 'the_secret',
+        ], $config->getApp());
+        $ask->shouldHaveBeenCalledTimes(2);
+    }
+
+    /**
+     * @test
+     */
+    public function overwriteIsRequestedIfValueIsAlreadySet()
+    {
+        $ask = $this->io->ask(Argument::cetera())->willReturn('the_new_secret');
+        $confirm = $this->io->confirm(Argument::cetera())->willReturn(false);
+        $config = new CustomizableAppConfig();
+        $config->setApp([
+            'SECRET' => 'foo',
+        ]);
+
+        $this->plugin->process($this->io->reveal(), $config);
+
+        $this->assertEquals([
+            'SECRET' => 'the_new_secret',
+            'DISABLE_TRACK_PARAM' => 'the_new_secret',
+        ], $config->getApp());
+        $ask->shouldHaveBeenCalledTimes(2);
+        $confirm->shouldHaveBeenCalledTimes(1);
+    }
+
+    /**
+     * @test
+     */
+    public function existingValueIsKeptIfRequested()
+    {
+        $confirm = $this->io->confirm(Argument::cetera())->willReturn(true);
+
+        $config = new CustomizableAppConfig();
+        $config->setApp([
+            'SECRET' => 'foo',
+        ]);
+
+        $this->plugin->process($this->io->reveal(), $config);
+
+        $this->assertEquals([
+            'SECRET' => 'foo',
+        ], $config->getApp());
+        $confirm->shouldHaveBeenCalledTimes(1);
+    }
+}

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

@@ -0,0 +1,146 @@
+<?php
+declare(strict_types=1);
+
+namespace ShlinkioTest\Shlink\Installer\Config\Plugin;
+
+use PHPUnit\Framework\TestCase;
+use Prophecy\Argument;
+use Prophecy\Prophecy\ObjectProphecy;
+use Shlinkio\Shlink\Installer\Config\Plugin\DatabaseConfigCustomizer;
+use Shlinkio\Shlink\Installer\Model\CustomizableAppConfig;
+use Symfony\Component\Console\Style\SymfonyStyle;
+use Symfony\Component\Filesystem\Filesystem;
+
+class DatabaseConfigCustomizerTest extends TestCase
+{
+    /**
+     * @var DatabaseConfigCustomizer
+     */
+    private $plugin;
+    /**
+     * @var ObjectProphecy
+     */
+    private $io;
+    /**
+     * @var ObjectProphecy
+     */
+    private $filesystem;
+
+    public function setUp()
+    {
+        $this->io = $this->prophesize(SymfonyStyle::class);
+        $this->io->title(Argument::any())->willReturn(null);
+        $this->filesystem = $this->prophesize(Filesystem::class);
+
+        $this->plugin = new DatabaseConfigCustomizer($this->filesystem->reveal());
+    }
+
+    /**
+     * @test
+     */
+    public function configIsRequestedToTheUser()
+    {
+        $choice = $this->io->choice(Argument::cetera())->willReturn('MySQL');
+        $ask = $this->io->ask(Argument::cetera())->willReturn('param');
+        $config = new CustomizableAppConfig();
+
+        $this->plugin->process($this->io->reveal(), $config);
+
+        $this->assertTrue($config->hasDatabase());
+        $this->assertEquals([
+            'DRIVER' => 'pdo_mysql',
+            'NAME' => 'param',
+            'USER' => 'param',
+            'PASSWORD' => 'param',
+            'HOST' => 'param',
+            'PORT' => 'param',
+        ], $config->getDatabase());
+        $choice->shouldHaveBeenCalledTimes(1);
+        $ask->shouldHaveBeenCalledTimes(5);
+    }
+
+    /**
+     * @test
+     */
+    public function overwriteIsRequestedIfValueIsAlreadySet()
+    {
+        $choice = $this->io->choice(Argument::cetera())->willReturn('MySQL');
+        $confirm = $this->io->confirm(Argument::cetera())->willReturn(false);
+        $ask = $this->io->ask(Argument::cetera())->willReturn('MySQL');
+        $config = new CustomizableAppConfig();
+        $config->setDatabase([
+            'DRIVER' => 'pdo_pgsql',
+            'NAME' => 'MySQL',
+            'USER' => 'MySQL',
+            'PASSWORD' => 'MySQL',
+            'HOST' => 'MySQL',
+            'PORT' => 'MySQL',
+        ]);
+
+        $this->plugin->process($this->io->reveal(), $config);
+
+        $this->assertEquals([
+            'DRIVER' => 'pdo_mysql',
+            'NAME' => 'MySQL',
+            'USER' => 'MySQL',
+            'PASSWORD' => 'MySQL',
+            'HOST' => 'MySQL',
+            'PORT' => 'MySQL',
+        ], $config->getDatabase());
+        $confirm->shouldHaveBeenCalledTimes(1);
+        $choice->shouldHaveBeenCalledTimes(1);
+        $ask->shouldHaveBeenCalledTimes(5);
+    }
+
+    /**
+     * @test
+     */
+    public function existingValueIsKeptIfRequested()
+    {
+        $confirm = $this->io->confirm(Argument::cetera())->willReturn(true);
+
+        $config = new CustomizableAppConfig();
+        $config->setDatabase([
+            'DRIVER' => 'pdo_pgsql',
+            'NAME' => 'MySQL',
+            'USER' => 'MySQL',
+            'PASSWORD' => 'MySQL',
+            'HOST' => 'MySQL',
+            'PORT' => 'MySQL',
+        ]);
+
+        $this->plugin->process($this->io->reveal(), $config);
+
+        $this->assertEquals([
+            'DRIVER' => 'pdo_pgsql',
+            'NAME' => 'MySQL',
+            'USER' => 'MySQL',
+            'PASSWORD' => 'MySQL',
+            'HOST' => 'MySQL',
+            'PORT' => 'MySQL',
+        ], $config->getDatabase());
+        $confirm->shouldHaveBeenCalledTimes(1);
+    }
+
+    /**
+     * @test
+     */
+    public function sqliteDatabaseIsImportedWhenRequested()
+    {
+        $confirm = $this->io->confirm(Argument::cetera())->willReturn(true);
+        $copy = $this->filesystem->copy(Argument::cetera())->willReturn(null);
+
+        $config = new CustomizableAppConfig();
+        $config->setDatabase([
+            'DRIVER' => 'pdo_sqlite',
+        ]);
+
+        $this->plugin->process($this->io->reveal(), $config);
+
+        $this->assertEquals([
+            'DRIVER' => 'pdo_sqlite',
+        ], $config->getDatabase());
+        $confirm->shouldHaveBeenCalledTimes(1);
+        $copy->shouldHaveBeenCalledTimes(1);
+    }
+}

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

@@ -0,0 +1,93 @@
+<?php
+declare(strict_types=1);
+
+namespace ShlinkioTest\Shlink\Installer\Config\Plugin;
+
+use PHPUnit\Framework\TestCase;
+use Prophecy\Argument;
+use Prophecy\Prophecy\ObjectProphecy;
+use Shlinkio\Shlink\Installer\Config\Plugin\LanguageConfigCustomizer;
+use Shlinkio\Shlink\Installer\Model\CustomizableAppConfig;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+class LanguageConfigCustomizerTest extends TestCase
+{
+    /**
+     * @var LanguageConfigCustomizer
+     */
+    protected $plugin;
+    /**
+     * @var ObjectProphecy
+     */
+    protected $io;
+
+    public function setUp()
+    {
+        $this->io = $this->prophesize(SymfonyStyle::class);
+        $this->io->title(Argument::any())->willReturn(null);
+        $this->plugin = new LanguageConfigCustomizer();
+    }
+
+    /**
+     * @test
+     */
+    public function configIsRequestedToTheUser()
+    {
+        $ask = $this->io->choice(Argument::cetera())->willReturn('en');
+        $config = new CustomizableAppConfig();
+
+        $this->plugin->process($this->io->reveal(), $config);
+
+        $this->assertTrue($config->hasLanguage());
+        $this->assertEquals([
+            'DEFAULT' => 'en',
+            'CLI' => 'en',
+        ], $config->getLanguage());
+        $ask->shouldHaveBeenCalledTimes(2);
+    }
+
+    /**
+     * @test
+     */
+    public function overwriteIsRequestedIfValueIsAlreadySet()
+    {
+        $choice = $this->io->choice(Argument::cetera())->willReturn('es');
+        $confirm = $this->io->confirm(Argument::cetera())->willReturn(false);
+        $config = new CustomizableAppConfig();
+        $config->setLanguage([
+            'DEFAULT' => 'en',
+            'CLI' => 'en',
+        ]);
+
+        $this->plugin->process($this->io->reveal(), $config);
+
+        $this->assertEquals([
+            'DEFAULT' => 'es',
+            'CLI' => 'es',
+        ], $config->getLanguage());
+        $choice->shouldHaveBeenCalledTimes(2);
+        $confirm->shouldHaveBeenCalledTimes(1);
+    }
+
+    /**
+     * @test
+     */
+    public function existingValueIsKeptIfRequested()
+    {
+        $ask = $this->io->confirm(Argument::cetera())->willReturn(true);
+
+        $config = new CustomizableAppConfig();
+        $config->setLanguage([
+            'DEFAULT' => 'es',
+            'CLI' => 'es',
+        ]);
+
+        $this->plugin->process($this->io->reveal(), $config);
+
+        $this->assertEquals([
+            'DEFAULT' => 'es',
+            'CLI' => 'es',
+        ], $config->getLanguage());
+        $ask->shouldHaveBeenCalledTimes(1);
+    }
+}

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

@@ -0,0 +1,109 @@
+<?php
+declare(strict_types=1);
+
+namespace ShlinkioTest\Shlink\Installer\Config\Plugin;
+
+use PHPUnit\Framework\TestCase;
+use Prophecy\Argument;
+use Prophecy\Prophecy\ObjectProphecy;
+use Shlinkio\Shlink\Installer\Config\Plugin\UrlShortenerConfigCustomizer;
+use Shlinkio\Shlink\Installer\Model\CustomizableAppConfig;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+class UrlShortenerConfigCustomizerTest extends TestCase
+{
+    /**
+     * @var UrlShortenerConfigCustomizer
+     */
+    private $plugin;
+    /**
+     * @var ObjectProphecy
+     */
+    private $io;
+
+    public function setUp()
+    {
+        $this->io = $this->prophesize(SymfonyStyle::class);
+        $this->io->title(Argument::any())->willReturn(null);
+        $this->plugin = new UrlShortenerConfigCustomizer();
+    }
+
+    /**
+     * @test
+     */
+    public function configIsRequestedToTheUser()
+    {
+        $choice = $this->io->choice(Argument::cetera())->willReturn('something');
+        $ask = $this->io->ask(Argument::cetera())->willReturn('something');
+        $confirm = $this->io->confirm(Argument::cetera())->willReturn(true);
+        $config = new CustomizableAppConfig();
+
+        $this->plugin->process($this->io->reveal(), $config);
+
+        $this->assertTrue($config->hasUrlShortener());
+        $this->assertEquals([
+            'SCHEMA' => 'something',
+            'HOSTNAME' => 'something',
+            'CHARS' => 'something',
+            'VALIDATE_URL' => true,
+        ], $config->getUrlShortener());
+        $ask->shouldHaveBeenCalledTimes(2);
+        $choice->shouldHaveBeenCalledTimes(1);
+        $confirm->shouldHaveBeenCalledTimes(1);
+    }
+
+    /**
+     * @test
+     */
+    public function overwriteIsRequestedIfValueIsAlreadySet()
+    {
+        $choice = $this->io->choice(Argument::cetera())->willReturn('foo');
+        $ask = $this->io->ask(Argument::cetera())->willReturn('foo');
+        $confirm = $this->io->confirm(Argument::cetera())->willReturn(false);
+        $config = new CustomizableAppConfig();
+        $config->setUrlShortener([
+            'SCHEMA' => 'bar',
+            'HOSTNAME' => 'bar',
+            'CHARS' => 'bar',
+            'VALIDATE_URL' => true,
+        ]);
+
+        $this->plugin->process($this->io->reveal(), $config);
+
+        $this->assertEquals([
+            'SCHEMA' => 'foo',
+            'HOSTNAME' => 'foo',
+            'CHARS' => 'foo',
+            'VALIDATE_URL' => false,
+        ], $config->getUrlShortener());
+        $ask->shouldHaveBeenCalledTimes(2);
+        $choice->shouldHaveBeenCalledTimes(1);
+        $confirm->shouldHaveBeenCalledTimes(2);
+    }
+
+    /**
+     * @test
+     */
+    public function existingValueIsKeptIfRequested()
+    {
+        $confirm = $this->io->confirm(Argument::cetera())->willReturn(true);
+
+        $config = new CustomizableAppConfig();
+        $config->setUrlShortener([
+            'SCHEMA' => 'foo',
+            'HOSTNAME' => 'foo',
+            'CHARS' => 'foo',
+            'VALIDATE_URL' => 'foo',
+        ]);
+
+        $this->plugin->process($this->io->reveal(), $config);
+
+        $this->assertEquals([
+            'SCHEMA' => 'foo',
+            'HOSTNAME' => 'foo',
+            'CHARS' => 'foo',
+            'VALIDATE_URL' => 'foo',
+        ], $config->getUrlShortener());
+        $confirm->shouldHaveBeenCalledTimes(1);
+    }
+}

module/Installer/test/Factory/InstallApplicationFactoryTest.php

@@ -0,0 +1,35 @@
+<?php
+declare(strict_types=1);
+
+namespace ShlinkioTest\Shlink\Installer\Factory;
+
+use PHPUnit\Framework\TestCase;
+use Shlinkio\Shlink\Installer\Factory\InstallApplicationFactory;
+use Symfony\Component\Console\Application;
+use Symfony\Component\Filesystem\Filesystem;
+use Zend\ServiceManager\ServiceManager;
+
+class InstallApplicationFactoryTest extends TestCase
+{
+    /**
+     * @var InstallApplicationFactory
+     */
+    private $factory;
+
+    public function setUp()
+    {
+        $this->factory = new InstallApplicationFactory();
+    }
+
+    /**
+     * @test
+     */
+    public function serviceIsCreated()
+    {
+        $instance = $this->factory->__invoke(new ServiceManager(['services' => [
+            Filesystem::class => $this->prophesize(Filesystem::class)->reveal(),
+        ]]), '');
+
+        $this->assertInstanceOf(Application::class, $instance);
+    }
+}