<?php

namespace App\Console\Commands;

use App\Models\Language;
use Illuminate\Console\Command;
use Illuminate\Database\QueryException;

class InstallCMS extends Command
{
    /**
     * The name and signature of the console command.
     * @var string
     */
    protected $signature = 'cms:install';
    /**
     * The console command description.
     * @var string
     */
    protected $description = 'Try to make installation of CMS as easy as possible';

    /**
     * Execute the console command.
     * @return mixed
     */
    public function handle()
    {
        // check and eventualy create .env file
        if (!file_exists(base_path('.env'))) {
            $this->createEnv();

            $this->line('Rerun this script again, we need to load changes.');
            return;
        }

        // install php dependencies
        $parameters = env('APP_DEBUG') ? '' : '--no-dev';
        exec('composer install ' . $parameters);

        // init database
        try {
            // does exist something in laguages table? (Or event table itself?)
            Language::all();
        } catch (QueryException $e) {
            // database is not initialized
            $this->call('db:init');
        }

        // install npm dependencies
        exec('npm install');
        exec('bower install');
        exec('gulp');

        // change chmod of needed directories
        $directories = ['bootstrap/cache', 'storage', 'public'];
        foreach ($directories as $directory) {
            $this->changeChmod($directory);
        }
        $this->line('Chmod changed');

        // generate APP_KEY in .env
        $this->call('key:generate');

        // create user
        $this->line('Creating admin user...');
        do {
            $email = $this->ask('E-mail for admin user');
        } while (empty($email));

        $this->call('user:new', compact('email'));

        $this->line('All done. CMS should be prepared.');
    }

    /**
     * Insert value into .env config file
     *
     * @param $envConstant
     * @param $value
     */
    private function setEnvConstant($envConstant, $value)
    {
        $content = file_get_contents(base_path('.env'));
        $content = preg_replace('/' . $envConstant . '=(.*)/i', $envConstant . '=' . $value, $content);
        file_put_contents(base_path('.env'), $content);
    }

    /**
     * Create .env file with all needed constants
     */
    private function createEnv()
    {
        \File::copy(base_path('.env.example'), base_path('.env'));

        // set environment
        do {
            $env = $this->ask('Install environment: ', 'local');
        } while (empty($env));
        $this->setEnvConstant('APP_ENV', $env);

        // set debugging
        if ($env == 'local') {
            $debug = 'true';
        } else {
            $debug = $this->confirm('Enable debugging?', true) ? 'true' : 'false';
        }
        $this->setEnvConstant('APP_DEBUG', $debug);

        // setup database
        $databaseFields = [
            'DB_HOST'     => 'Database server',
            'DB_DATABASE' => 'Database name',
            'DB_USERNAME' => 'Database user',
            'DB_PASSWORD' => 'Password'
        ];
        foreach ($databaseFields as $constant => $text) {
            do {
                $value = $this->ask($text);
            } while (empty ($value));

            $this->setEnvConstant($constant, $value);
        }

        // set app url
        do {
            $url = $this->ask('Application URL');
            $url = trim($url, ' /');
        } while (empty($url));
        $this->setEnvConstant('SITE_URL', $url);
        $this->setEnvConstant('UPLOAD_URL', $url . '/public/uploads');
        $this->setEnvConstant('THUMBNAIL_URL', $url . '/public/uploads/thumbnails');
    }

    /**
     * Recursively change chmod to 777 in given directory
     *
     * @param $directory
     */
    private function changeChmod($directory)
    {
        @chmod($directory, 0777);

        if (!is_dir($directory)) {
            return;
        }

        $subdirectories = \File::allFiles($directory);

        foreach ($subdirectories as $subdirectory) {
            $this->changeChmod($subdirectory);
        }
    }
}