<?php

/*
 * This file is part of the Cilex framework.
 *
 * (c) Mike van Riel <mike.vanriel@naenius.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Cilex\Provider;

use Cilex\Application;
use Cilex\ServiceProviderInterface;
use Doctrine\DBAL\DriverManager;
use Doctrine\DBAL\Configuration;
use Doctrine\Common\EventManager;

/**
 * Doctrine DBAL Provider.
 *
 * This Service Provider is an adaptation of the DoctrineServiceProvider for
 * Silex written by Fabien Potencier.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Mike van Riel <mike.vanriel@naenius.com>
 */
class DoctrineServiceProvider implements ServiceProviderInterface
{
    public function register(Application $app)
    {
        $app['db.default_options'] = array(
            'driver'   => 'pdo_mysql',
            'dbname'   => null,
            'host'     => 'localhost',
            'user'     => 'root',
            'password' => null,
        );

        $app['dbs.options.initializer'] = $app->protect(
            function () use ($app) {
                static $initialized = false;

                if ($initialized) {
                    return;
                }

                $initialized = true;

                if (!isset($app['dbs.options'])) {
                    $app['dbs.options'] = array('default' => isset($app['db.options']) ? $app['db.options'] : array());
                }

                $tmp = $app['dbs.options'];
                foreach ($tmp as $name => &$options) {
                    $options = array_replace($app['db.default_options'], $options);

                    if (!isset($app['dbs.default'])) {
                        $app['dbs.default'] = $name;
                    }
                }
                $app['dbs.options'] = $tmp;
            }
        );

        $app['dbs'] = $app->share(
            function () use ($app) {
                $app['dbs.options.initializer']();

                $dbs = new \Pimple();
                foreach ($app['dbs.options'] as $name => $options) {
                    if ($app['dbs.default'] === $name) {
                        // we use shortcuts here in case the default has been overriden
                        $config = $app['db.config'];
                        $manager = $app['db.event_manager'];
                    } else {
                        $config = $app['dbs.config'][$name];
                        $manager = $app['dbs.event_manager'][$name];
                    }

                    $dbs[$name] = DriverManager::getConnection($options, $config, $manager);
                }

                return $dbs;
            }
        );

        $app['dbs.config'] = $app->share(
            function () use ($app) {
                $app['dbs.options.initializer']();

                $configs = new \Pimple();
                foreach ($app['dbs.options'] as $name => $options) {
                    $configs[$name] = new Configuration();
                }

                return $configs;
            }
        );

        $app['dbs.event_manager'] = $app->share(
            function () use ($app) {
                $app['dbs.options.initializer']();

                $managers = new \Pimple();
                foreach ($app['dbs.options'] as $name => $options) {
                    $managers[$name] = new EventManager();
                }

                return $managers;
            }
        );

        // shortcuts for the "first" DB
        $app['db'] = $app->share(
            function () use ($app) {
                $dbs = $app['dbs'];

                return $dbs[$app['dbs.default']];
            }
        );

        $app['db.config'] = $app->share(
            function () use ($app) {
                $dbs = $app['dbs.config'];

                return $dbs[$app['dbs.default']];
            }
        );

        $app['db.event_manager'] = $app->share(
            function () use ($app) {
                $dbs = $app['dbs.event_manager'];

                return $dbs[$app['dbs.default']];
            }
        );

        if (isset($app['db.dbal.class_path'])) {
            $app['autoloader']->registerNamespace('Doctrine\\DBAL', $app['db.dbal.class_path']);
        }

        if (isset($app['db.common.class_path'])) {
            $app['autoloader']->registerNamespace('Doctrine\\Common', $app['db.common.class_path']);
        }
    }
}