<?php

namespace gp\admin;

defined('is_running') or die('Not an entry point...');

includeFile('tool/Image.php');

class Configuration extends \gp\special\Base{

	protected $variables;

	public function __construct($args){
		global $langmessage;

		parent::__construct($args);

		$this->page->ajaxReplace = array();


		//add examples to smtp_hosts
		$langmessage['about_config']['smtp_hosts']		.= 'ssl://smtp.gmail.com:465 ; tls://smtp.live.com:587';
		$langmessage['about_config']['showgplink']		= 'Showing the "powered by" link on your site is a great way to support '.CMS_NAME.' CMS.';
		$langmessage['about_config']['history_limit']	= 'Max: '.gp_backup_limit;
		$langmessage['about_config']['maxthumbsize']	.= ' '.\gp\tool::Link('Admin/Configuration',$langmessage['recreate_all_thumbnails'],'cmd=recreate_thumbs','class="" data-cmd="creq"');

		$this->variables = array(

			// these values aren't used
			//'timeoffset'=>'',
			//'dateformat'=>'',

			/* General Settings */
			'general_settings'			=> false,
			'title'						=> '',
			'keywords'					=> '',
			'desc'						=> 'textarea',

			'Interface'					=> false,
			'colorbox_style'			=> [
				'minimalistic'	=> 'Minimalistic',
				'example1'		=> 'Example 1',
				'example2'		=> 'Example 2',
				'example3'		=> 'Example 3',
				'example4'		=> 'Example 4',
				'example5'		=> 'Example 5',
			],
			'gallery_legacy_style'		=> 'boolean',
			'language'					=> '',
			'langeditor'				=> '',
			'showsitemap'				=> 'boolean',
			'showlogin'					=> 'boolean',
			'showgplink'				=> 'boolean',

			'Images'					=> false,
			'allow_svg_upload'			=> 'boolean',
			'maximgarea'				=> 'integer',
			'resize_images'				=> 'boolean',
			'preserve_icc_profiles'		=> 'boolean',
			'preserve_image_metadata'	=> 'boolean',
			'maxthumbsize'				=> 'integer',
			'maxthumbheight'			=> 'integer',
			'thumbskeepaspect'			=> 'boolean',

			'Performance'				=> false,
			'auto_redir'				=> 'integer',
			'history_limit'				=> 'integer',
			'HTML_Tidy'					=> '',
			'Report_Errors'				=> 'boolean',
			'combinejs'					=> 'boolean',
			'minifyjs'					=> 'boolean',
			'combinecss'				=> 'boolean',
			'etag_headers'				=> 'boolean',
			'space_char'				=> [
				'_'			=> 'Underscore "_"',
				'-'			=> 'Dash "-"'
			],

			/* Hide Admin UI Settings */
			'Hide Admin UI'				=> false,
			'admin_ui_autohide_below'	=> 'integer',
			'admin_ui_hotkey'			=> '',
			'admin_ui_hotkey_code'		=> 'hidden',

			/* Contact Configuration */
			'contact_config'			=> false,
			'toemail'					=> '',
			'toname'					=> '',
			'from_address'				=> '',
			'from_name'					=> '',
			'from_use_user'				=> 'boolean',
			'require_email'				=> '',
			'contact_advanced'			=> false,
			'mail_method'				=> '',
			'sendmail_path'				=> '',
			'smtp_hosts'				=> '',
			'smtp_user'					=> '',
			'smtp_pass'					=> 'password',
			//'fromemail'				=> '',

			'reCaptcha'					=> false,
			'recaptcha_public'			=> '',
			'recaptcha_private'			=> '',
			'recaptcha_language'		=> '',
		);

	}

	public function RunScript(){

		$cmd = \gp\tool::GetCommand();
		switch($cmd){
			case 'save_config':
				$this->SaveConfig();
			break;
			case 'recreate_thumbs':
				$this->RecreateThumbs();
			break;
		}

		$this->showForm();
	}


	/**
	 * Save the posted configuration
	 *
	 */
	protected function SaveConfig(){
		global $config, $langmessage;

		$config_before	= $config;
		$possible		= $this->getPossible();

		foreach($possible as $key => $curr_possible){

			if( $curr_possible == 'boolean' ){
				if( isset($_POST[$key]) && ($_POST[$key] == 'true') ){
					$config[$key] = true;
				}else{
					$config[$key] = false;
				}

			}elseif( $curr_possible == 'integer' ){
				if( isset($_POST[$key]) && ( is_numeric($_POST[$key]) || $_POST[$key] == '' ) ){ // also allow empty values
					$config[$key] = $_POST[$key];
				}

			}elseif( isset($_POST[$key]) ){
				$config[$key] = $_POST[$key];
			}
		}


		$config['history_limit'] = min($config['history_limit'],gp_backup_limit);

		if( !\gp\admin\Tools::SaveConfig(true) ){
			return false;
		}


		if( isset($_GET['gpreq']) && $_GET['gpreq'] == 'json' ){
			msg($langmessage['SAVED'].' '.$langmessage['REFRESH']);
		}else{
			msg($langmessage['SAVED']);
		}

		//resize thumbnails
		if(
			$config_before['preserve_icc_profiles'] !== $config['preserve_icc_profiles']
			|| $config_before['preserve_image_metadata'] !== $config['preserve_image_metadata']
			|| $config_before['maxthumbsize'] !== $config['maxthumbsize']
			|| $config_before['maxthumbheight'] !== $config['maxthumbheight']
			|| $config_before['thumbskeepaspect'] !== $config['thumbskeepaspect']
		){
			msg(\gp\tool::Link(
				'Admin/Configuration',
				$langmessage['recreate_all_thumbnails'],
				'cmd=recreate_thumbs',
				[
					'class'		=> '',
					'data-cmd'	=> 'creq',
				]
			));
		}


	}


	private function getValues(){
		global $config;

		$mailer = new \gp\tool\Emailer();

		if( $_SERVER['REQUEST_METHOD'] != 'POST'){
			$show = $config;
		}else{
			$show = $_POST;
		}
		if( empty($show['recaptcha_language']) ){
			$show['recaptcha_language'] = 'inherit';
		}

		if( empty($show['from_address']) ){
			$show['from_address'] = $mailer->From_Address();
		}
		if( empty($show['from_name']) ){
			$show['from_name'] = $mailer->From_Name();
		}
		if( empty($show['mail_method']) ){
			$show['mail_method'] = $mailer->Mail_Method();
		}

		//suhosin will stop the script if a POST value contains a real path like /usr/sbin/sendmail
		//if( empty($show['sendmail_path']) ){
		//	$show['sendmail_path'] = $mailer->Sendmail_Path();
		//}

		return $show;
	}


	/**
	 * Get possible configuration values
	 *
	 */
	protected function getPossible(){
		global $dataDir,$langmessage;

		$possible = $this->variables;

		$langDir = $dataDir.'/include/thirdparty/ckeditor/lang'; //ckeditor

		$possible['langeditor'] = \gp\tool\Files::readDir($langDir,'js');
		unset($possible['langeditor']['_languages']);
		$possible['langeditor']['inherit'] = ' '.$langmessage['default']; //want it to be the first in the list
		asort($possible['langeditor']);


		//recaptcha language
		$possible['recaptcha_language'] = [];
		$possible['recaptcha_language']['inherit'] = $langmessage['default'];

		// According to https://developers.google.com/recaptcha/docs/language
		$recaptcha_languages = [
			'af', 'am', 'ar', 'az',
			'bn', 'bg',
			'ca', 'cs',
			'da', 'de', 'de-AT', 'de-CH',
			'el', 'en', 'en-GB', 'es', 'es-419', 'et', 'eu',
			'fa', 'fi', 'fil', 'fr', 'fr-CA',
			'gl', 'gu',
			'hi', 'hr', 'hu', 'hy',
			'id', 'is', 'it', 'iw',
			'ja',
			'ka', 'kn', 'ko',
			'lo', 'lt', 'lv',
			'ml', 'mn', 'mr', 'ms',
			'nl', 'no',
			'pl', 'pt', 'pt-BR', 'pt-PT',
			'ro', 'ru',
			'si', 'sk', 'sl', 'sr', 'sv', 'sw',
			'ta', 'te', 'th', 'tr',
			'uk', 'ur',
			'vi',
			'zh-HK', 'zh-CN', 'zh-TW', 'zu',
		];
		foreach($recaptcha_languages as $lang){
			$possible['recaptcha_language'][$lang] = $lang;
		}

		//website language
		$possible['language'] = $this->GetPossibleLanguages();

		//tidy
		if( function_exists('tidy_parse_string') ){
			$possible['HTML_Tidy'] = [
				'off'	=> $langmessage['Off'],
				''		=> $langmessage['On']
			];
		}else{
			$possible['HTML_Tidy'] = [''=>'Unavailable'];
		}

		//required email fields
		$possible['require_email'] = [
			'none'	=> 'None',
			''		=> 'Subject &amp; Message',
			'email'	=> 'Subject, Message &amp; Email'
		];


		//see xoopsmultimailer.php
		$possible['mail_method'] = [
			'mail'		=> 'PHP mail()',
			'sendmail'	=> 'sendmail',
			'smtp'		=> 'smtp',
			'smtpauth'	=> 'SMTPAuth'
		];

		//CDN
		foreach(\gp\tool\Output\Combine::$scripts as $key => $script_info){
			if( !isset($script_info['cdn']) ){
				continue;
			}

			$config_key					= 'cdn_'.$key;

			if( !array_key_exists($config_key, $possible) ){
				continue;
			}

			$opts						= array_keys($script_info['cdn']);
			$possible[$config_key]		= array_combine($opts, $opts);
			array_unshift($possible[$config_key],$langmessage['None']);
		}

		gpSettingsOverride('configuration',$possible);

		return $possible;
	}


	/**
	 * Return a list of possible languages
	 * Based on the files in /include/languages
	 *
	 */
	private function GetPossibleLanguages(){
		global $dataDir;
		$lang_dir = $dataDir.'/include/languages';

		$files		= scandir($lang_dir);
		$languages	= array();
		foreach($files as $file){
			if( $file == '.' || $file == '..' || strpos($file,'main.inc') === false ){
				continue;
			}

			$languages[] = str_replace('.main.inc','',$file);
		}

		return array_combine($languages, $languages);
	}


	/**
	 * Display configuration settings
	 *
	 */
	protected function showForm(){
		global $langmessage;

		$possible_values	= $this->getPossible();
		$array				= $this->getValues();

		echo '<form action="'.\gp\tool::GetUrl($this->page->requested).'" method="post">';


		//order by the possible values
		$opened = false;
		foreach($possible_values as $key => $possible_value){

			if( $possible_value === false ){
				if( $opened ){
					echo '</table>';
					$this->SaveAllButton(false);
					echo '<br/>';
				}
				echo '<h2>';
				if( isset($langmessage[$key]) ){
					echo $langmessage[$key];
				}else{
					echo str_replace('_',' ',$key);
				}
				echo '</h2>';
				echo '<table class="bordered configuration">';
				$opened = true;
				continue;
			}

			if( isset($array[$key]) ){
				$value = $array[$key];
			}else{
				$value = '';
			}

			echo "\n\n";

			$tr_class_attr = '';
			if( !is_array($possible_value) && $possible_value == 'hidden' ){
				$tr_class_attr = ' class="nodisplay"';
			}
			echo '<tr' . $tr_class_attr . '><td style="white-space:nowrap">';
			if( isset($langmessage[$key]) ){
				echo $langmessage[$key];
			}else{
				echo str_replace('_',' ',$key);
			}
			echo '</td><td>';


			if( is_array($possible_value) ){
				self::formSelect($key,$possible_value,$value);
			}else{
				switch($possible_value){
					case 'boolean':
						$this->formCheckbox($key,$value);
					break;
					case 'textarea':
						$this->formTextarea($key,$value);
					break;
					default:
						$this->formInput($key,$value,$possible_value);
					break;
				}
			}

			if( isset($langmessage['about_config'][$key]) ){
				echo $langmessage['about_config'][$key];
			}
			echo '</td></tr>';

		}

		echo '</table>';


		$this->SaveAllButton(true);
		echo '</form>';
	}


	/**
	 * Display Save buttons
	 *
	 */
	protected function SaveButtons(){
		global $langmessage;


		echo '<div style="margin:1em 0">';
		echo '<input type="hidden" name="cmd" value="save_config" />';

		if( isset($_GET['gpreq']) && $_GET['gpreq'] == 'json' ){
			echo '<input value="'.$langmessage['save'].'" type="submit" name="aaa" accesskey="s" class="gppost gpsubmit" />';
		}else{
			echo '<input value="'.$langmessage['save'].'" type="submit" name="aaa" accesskey="s" class="gpsubmit"/>';
		}

 		echo '</div>';

		echo '<p class="admin_note">';
		echo '<b>';
		echo $langmessage['see_also'];
		echo '</b> ';
		echo \gp\tool::Link('Admin/Preferences',$langmessage['Preferences'],'','data-cmd="gpabox"');
		echo '</p>';

	}


	/**
	 * Display Save All buttons
	 * @param boolean $is_last If true include admin notice and hidden cmd input
	 */
	protected function SaveAllButton($is_last=true){
		global $langmessage;

		echo '<div style="margin:1em 0">';

		if( $is_last ){
			echo '<input type="hidden" name="cmd" value="save_config" />';
		}

		if( isset($_GET['gpreq']) && $_GET['gpreq'] == 'json' ){
			echo '<input value="' . $langmessage['Save All'] . '" type="submit" name="aaa" accesskey="s" class="gppost gpsubmit" />';
		}else{
			echo '<input value="' . $langmessage['Save All'] . '" type="submit" name="aaa" accesskey="s" class="gpsubmit"/>';
		}

 		echo '</div>';

		if( $is_last ){
			echo '<p class="admin_note">';
			echo '<b>';
			echo $langmessage['see_also'];
			echo '</b> ';
			echo \gp\tool::Link('Admin/Preferences',$langmessage['Preferences'],'','data-cmd="gpabox"');
			echo '</p>';
		}

	}


	/**
	 *	Form Functions
	 *
	 */

	public function formCheckbox($key,$value){
		$checked = '';
		if( $value && $value !== 'false' ){
			$checked = ' checked="checked"';
		}
		echo '<input type="hidden" name="'.$key.'" value="false" '.$checked.'/> &nbsp;';
		echo '<input type="checkbox" name="'.$key.'" value="true" '.$checked.'/> &nbsp;';
	}

	public function formInput($name,$value,$type='text'){
		echo "\n<div>";
		echo '<input id="'.$name.'" name="'.$name.'" size="50" value="'.htmlspecialchars($value).'" type="'.$type.'" class="gpinput"/>';
		echo '</div>';
	}

	public function formTextarea($name,$value){
		global $langmessage;
		$count_label = sprintf($langmessage['_characters'],'<span>'.strlen($value).'</span>');
		echo '<span class="show_character_count gptextarea">';
		echo '<textarea id="'.$name.'" name="'.$name.'" cols="50" rows="2">'.htmlspecialchars($value).'</textarea>';
		echo '<span class="character_count">'.$count_label.'</span>';
		echo '</span>';
	}

	public static function formSelect($name,$possible,$value=null){
		global $languages;

		foreach($possible as $key => &$val){
			if( isset($languages[$val]) ){
				$val = $languages[$val].' ('.$val.')';
			}
		}

		echo \gp\tool\HTML::Select( $possible, $value, ' name="'.$name.'" class="gpselect"');
	}


	/**
	 * Recreate all of the thumbnails according to the size in the configuration
	 * TODO: With lots of images, this may easily exceed PHP script runtime or available memory
	 * and should be broken up into consecutive AJAX calls
	 */
	function RecreateThumbs($dir_rel = ''){
		global $dataDir;

		$dir_full	= $dataDir.'/data/_uploaded'.$dir_rel;
		$files		= scandir($dir_full);

		foreach($files as $file){

			if( $file == '.' || $file == '..' || $file == 'thumbnails' ){
				continue;
			}

			$file_full	= $dir_full.'/'.$file;
			$file_rel	= $dir_rel.'/'.$file;

			if( is_dir($file_full) ){
				$this->RecreateThumbs($file_rel);
				continue;
			}

			if( \gp\admin\Content\Uploaded::IsImg($file_full) ){
				\gp\admin\Content\Uploaded::CreateThumbnail($file_full);
			}
		}

	}

}