<?php
/**
 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
 * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 * @link          http://cakephp.org CakePHP(tm) Project
 * @since         2.3.0
 * @license       http://www.opensource.org/licenses/mit-license.php MIT License
 */

namespace Cake\Shell;

use Cake\Console\Shell;
use Cake\Core\Configure;

/**
 * built-in Server Shell
 *
 */
class ServerShell extends Shell
{

    /**
     * Default ServerHost
     *
     * @var string
     */
    const DEFAULT_HOST = 'localhost';

    /**
     * Default ListenPort
     *
     * @var int
     */
    const DEFAULT_PORT = 8765;

    /**
     * server host
     *
     * @var string
     */
    protected $_host = null;

    /**
     * listen port
     *
     * @var string
     */
    protected $_port = null;

    /**
     * document root
     *
     * @var string
     */
    protected $_documentRoot = null;

    /**
     * Override initialize of the Shell
     *
     * @return void
     */
    public function initialize()
    {
        $this->_host = self::DEFAULT_HOST;
        $this->_port = self::DEFAULT_PORT;
        $this->_documentRoot = WWW_ROOT;
    }

    /**
     * Starts up the Shell and displays the welcome message.
     * Allows for checking and configuring prior to command or main execution
     *
     * Override this method if you want to remove the welcome information,
     * or otherwise modify the pre-command flow.
     *
     * @return void
     * @link http://book.cakephp.org/3.0/en/console-and-shells.html#hook-methods
     */
    public function startup()
    {
        if (!empty($this->params['host'])) {
            $this->_host = $this->params['host'];
        }
        if (!empty($this->params['port'])) {
            $this->_port = $this->params['port'];
        }
        if (!empty($this->params['document_root'])) {
            $this->_documentRoot = $this->params['document_root'];
        }

        // For Windows
        if (substr($this->_documentRoot, -1, 1) === DS) {
            $this->_documentRoot = substr($this->_documentRoot, 0, strlen($this->_documentRoot) - 1);
        }
        if (preg_match("/^([a-z]:)[\\\]+(.+)$/i", $this->_documentRoot, $m)) {
            $this->_documentRoot = $m[1] . '\\' . $m[2];
        }

        parent::startup();
    }

    /**
     * Displays a header for the shell
     *
     * @return void
     */
    protected function _welcome()
    {
        $this->out();
        $this->out(sprintf('<info>Welcome to CakePHP %s Console</info>', 'v' . Configure::version()));
        $this->hr();
        $this->out(sprintf('App : %s', APP_DIR));
        $this->out(sprintf('Path: %s', APP));
        $this->out(sprintf('DocumentRoot: %s', $this->_documentRoot));
        $this->hr();
    }

    /**
     * Override main() to handle action
     *
     * @return void
     */
    public function main()
    {
        $command = sprintf(
            "php -S %s:%d -t %s %s",
            $this->_host,
            $this->_port,
            escapeshellarg($this->_documentRoot),
            escapeshellarg($this->_documentRoot . '/index.php')
        );

        $port = ':' . $this->_port;
        $this->out(sprintf('built-in server is running in http://%s%s/', $this->_host, $port));
        $this->out(sprintf('You can exit with <info>`CTRL-C`</info>'));
        system($command);
    }

    /**
     * Gets the option parser instance and configures it.
     *
     * @return \Cake\Console\ConsoleOptionParser
     */
    public function getOptionParser()
    {
        $parser = parent::getOptionParser();

        $parser->description([
            'PHP Built-in Server for CakePHP',
            '<warning>[WARN] Don\'t use this at the production environment</warning>',
        ])->addOption('host', [
            'short' => 'H',
            'help' => 'ServerHost'
        ])->addOption('port', [
            'short' => 'p',
            'help' => 'ListenPort'
        ])->addOption('document_root', [
            'short' => 'd',
            'help' => 'DocumentRoot'
        ]);

        return $parser;
    }
}
