<?php namespace Mews\Purifier;

use Illuminate\Container\Container;
use Illuminate\Foundation\Application as LaravelApplication;
use Illuminate\Support\ServiceProvider;
use Laravel\Lumen\Application as LumenApplication;

class PurifierServiceProvider extends ServiceProvider
{
    /**
     * Indicates if loading of the provider is deferred.
     *
     * @var bool
     */
    protected $defer = true;

    /**
     * Boot the service provider.
     *
     * @return null
     */
    public function boot()
    {
        if ($this->app instanceof LaravelApplication) {
            $this->publishes([$this->getConfigSource() => config_path('purifier.php')]);
        } elseif ($this->app instanceof LumenApplication) {
            $this->app->configure('purifier');
        }
    }

    /**
     * Get the config source.
     * 
     * @return string
     */
    protected function getConfigSource()
    {
        return realpath(__DIR__.'/../config/purifier.php');
    }

    /**
     * Register the service provider.
     *
     * @return void
     */
    public function register()
    {
        $this->mergeConfigFrom($this->getConfigSource(), 'purifier');
        
        $this->app->singleton('purifier', function (Container $app) {
            return new Purifier($app['files'], $app['config']);
        });

        $this->app->alias('purifier', Purifier::class);
    }

    /**
     * Get the services provided by the provider.
     *
     * @return array
     */
    public function provides()
    {
        return ['purifier'];
    }
}