<?php

namespace Examyou\LaravelInstaller\Helpers;

use Exception;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Validator;

class EnvironmentManager
{
	/**
	 * @var string
	 */
	private $envPath;

	/**
	 * @var string
	 */
	private $envExamplePath;

	/**
	 * Set the .env and .env.example paths.
	 */
	public function __construct()
	{
		$this->envPath = base_path('.env');
		$this->envExamplePath = base_path('.env.example');
	}

	/**
	 * Get the content of the .env file.
	 *
	 * @return string
	 */
	public function getEnvContent()
	{
		if (!file_exists($this->envPath)) {
			if (file_exists($this->envExamplePath)) {
				copy($this->envExamplePath, $this->envPath);
			} else {
				touch($this->envPath);
			}
		}

		return file_get_contents($this->envPath);
	}

	/**
	 * Save the edited content to the file.
	 *
	 * @param Request $input
	 * @return string
	 */
	public function saveFile(Request $input)
	{

		$message = trans('messages.environment.success');

		$env = $this->getEnvContent();
		$dbName = $input->get('database');
		$dbHost = $input->get('hostname');
		$dbUsername = $input->get('username');
		$dbPassword = $input->get('password');

		$databaseSetting = 'DB_HOST=' . $dbHost . '
DB_DATABASE=' . $dbName . '
DB_USERNAME=' . $dbUsername . '
DB_PASSWORD="' . $dbPassword . '"
APP_URL="' . request()->getSchemeAndHttpHost() . '"
';

		// @ignoreCodingStandard
		$rows       = explode("\n", $env);
		$unwanted   = "DB_HOST|DB_DATABASE|DB_USERNAME|DB_PASSWORD|APP_URL";
		$cleanArray = preg_grep("/$unwanted/i", $rows, PREG_GREP_INVERT);

		$cleanString = implode("\n", $cleanArray);


		$env = $cleanString . $databaseSetting;
		try {
			$dbh = new \PDO('mysql:host=' . $dbHost, $dbUsername, $dbPassword);

			$dbh->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION);

			// First check if database exists
			$stmt = $dbh->query('CREATE DATABASE IF NOT EXISTS ' . $dbName . ' CHARACTER SET utf8 COLLATE utf8_general_ci;');
			// Save settings in session
			$_SESSION['db_username'] = $dbUsername;
			$_SESSION['db_password'] = $dbPassword;
			$_SESSION['db_name']     = $dbName;
			$_SESSION['db_host']     = $dbHost;
			$_SESSION['db_success']  = true;
			$message = 'Database settings correct';

			try {
				file_put_contents($this->envPath, $env);
			} catch (Exception $e) {
				$message = trans('messages.environment.errors');
			}

			return Reply::redirect(route('LaravelInstaller::requirements'), $message);
		} catch (\PDOException $e) {
			return Reply::error('DB Error: ' . $e->getMessage());
		} catch (\Exception $e) {

			return Reply::error('DB Error: ' . $e->getMessage());
		}
	}
}