<?php namespace ProcessWire;

/**
 * ProcessWire Module Process
 *
 * Provides list, install, and uninstall capability for ProcessWire modules
 * 
 * For more details about how Process modules work, please see: 
 * /wire/core/Process.php 
 * 
 * This version also lifts several pieces of code from Soma's Modules Manager
 * specific to the parts involved with downloading modules from the directory.
 * 
 * ProcessWire 3.x, Copyright 2016 by Ryan Cramer
 * https://processwire.com
 * 
 * @todo add support for module configuration inputfields with useLanguages option
 *
 */

class ProcessModule extends Process {

	public static function getModuleInfo() {
		return array(
			'title' => __('Modules', __FILE__), // getModuleInfo title          
			'summary' => __('List, edit or install/uninstall modules', __FILE__), // getModuleInfo summary
			'version' => 118, 
			'permanent' => true, 
			'permission' => 'module-admin', 
			'useNavJSON' => true,
			'nav' => array(
				array(
					'url' => '?site#tab_site_modules',
					'label' => 'Site', 
					'icon' => 'plug',
					'navJSON' => 'navJSON/?site=1'
				),
				array(
					'url' => '?core#tab_core_modules',
					'label' => 'Core', 
					'icon' => 'plug',
					'navJSON' => 'navJSON/?core=1',
				),
				array(
					'url' => '?configurable#tab_configurable_modules',
					'label' => 'Configure',
					'icon' => 'gear',
					'navJSON' => 'navJSON/?configurable=1',
				),
				array(
					'url' => '?install#tab_install_modules',
					'label' => 'Install',
					'icon' => 'sign-in',
					'navJSON' => 'navJSON/?install=1',
				),
				array(
					'url' => '?reset=1',
					'label' => 'Refresh',
					'icon' => 'refresh',
				)
			)
		);
	}
	
	/**
	 * New core modules allowed to appear in the "new" list
	 * 
	 * By default, core modules don't appear in the "new" list, 
	 * this array contains a list of core modules that are allowed to appear there.
	 * 
	 * @var array
	 * 
	 */
	protected $newCoreModules = array(
		'SystemNotifications', 
		'InputfieldCKEditor',
		'FieldtypeOptions',
		'InputfieldIcon', 
		'ProcessLogger',
		);

	protected $labels = array();

	/**
	 * All modules indexed by class name and sorted by class name
	 *
	 */
	protected $modulesArray = array();

	/**
	 * All modules that may be deleted
	 *
	 */
	protected $deleteableModules = array();

	/**
	 * Categories of modules that we can't uninstall via this module
	 * 
	 */
	protected $uninstallableCategories = array(
		'language-pack',
		'site-profile',
	); 

	/**
	 * Number of new modules found after a reset
	 * 
	 */
	protected $numFound = 0;
	
	public function __construct() {
		$this->labels['download'] = $this->_('Download'); 
		if($this->input->get->update) {
			$this->labels['download_install'] = $this->_('Download and Update');
		} else { 
			$this->labels['download_install'] = $this->_('Download and Install');
		}
		$this->labels['download_dir'] = $this->_('Add Module From Directory');
		$this->labels['upload'] = $this->_('Upload');
		$this->labels['upload_zip'] = $this->_('Add Module From Upload');
		$this->labels['download_zip'] = $this->_('Add Module From URL');
		$this->labels['check_new'] = $this->_('Check for New Modules'); 
		$this->labels['installed_date'] = $this->_('Installed');
		$this->labels['requires'] = $this->_x("Requires", 'list'); // Label that precedes list of required prerequisite modules
		$this->labels['installs'] = $this->_x("Also Installs", 'list'); // Label that precedes list of other modules a given one installs
		$this->labels['reset'] = $this->_('Refresh'); 
		$this->labels['core'] = $this->_('Core');
		$this->labels['site'] = $this->_('Site');
		$this->labels['configure'] = $this->_('Configure');
		$this->labels['install_btn'] = $this->_x('Install', 'button'); // Label for Install button
		$this->labels['install'] = $this->_('Install'); // Label for Install tab
		$this->labels['cancel'] = $this->_('Cancel'); // Label for Cancel button
	
		if($this->wire('languages') && !$this->wire('user')->language->isDefault()) {
			// Use previous translations when new labels aren't available (can be removed in PW 2.6+ when language packs assumed updated)
			if($this->labels['install'] == 'Install') $this->labels['install'] = $this->labels['install_btn'];
			if($this->labels['reset'] == 'Refresh') $this->labels['reset'] = $this->labels['check_new'];
		}

		require(dirname(__FILE__) . '/ProcessModuleInstall.php'); 
	}


	/**
	 * Format a module version number from 999 to 9.9.9
	 *
	 * @param string $version
	 * @return string
	 *
	 */
	protected function formatVersion($version) {
		return $this->wire('modules')->formatVersion($version); 
	}

	/**
	 * Output JSON list of navigation items for this (intended to for ajax use)
	 *
	 * For 2.5+ admin themes
	 *
	 */
	public function ___executeNavJSON(array $options = array()) {
		$page = $this->wire('page');
		$data = array(
			'url' => $page->url,
			'label' => (string) $page->get('title|name'),
			'icon' => 'plug', 
			'list' => array(),
		);
		
		$site = $this->wire('input')->get('site');
		$core = $this->wire('input')->get('core');
		$configurable = $this->wire('input')->get('configurable');
		$install = $this->wire('input')->get('install'); 
	
		if($site || $install) $data['add'] = array(
			'url' => "?new#tab_new_modules",
			'label' => __('Add New', '/wire/templates-admin/default.php'),
			'icon' => 'plus-circle',
		);
		
		$modules = $this->wire('modules'); 
		$moduleNames = array();
		if($install) {
			$moduleNames = array_keys($modules->getInstallable());	
		} else {
			foreach($modules as $module) $moduleNames[] = $module->className();
		}
		sort($moduleNames); 

		foreach($moduleNames as $moduleName) {
			
			$info = $this->wire('modules')->getModuleInfoVerbose($moduleName); 
			
			if($site && $info['core']) continue; 
			if($core && !$info['core']) continue; 
			
			if($configurable) { 
				if(!$info['configurable'] || !$info['installed']) continue;
				$flags = $this->wire('modules')->getFlags($moduleName);
				if($flags & Modules::flagsNoUserConfig) continue;
			}
			
			if($install) {
				// exclude already installed modules
				if($info['installed']) continue; 
				// check that it can be installed NOW (i.e. all dependencies met)
				if(!$this->wire('modules')->isInstallable($moduleName, true)) continue; 
			}
			
			$label = $info['name'];
			$_label = $label;
			while(isset($data['list'][$_label])) $_label .= "_";
			if(empty($info['icon'])) $info['icon'] = $info['configurable'] ? 'gear' : 'plug';
			
			$url = $install ? "installConfirm" : "edit"; 
			$url .= "?name=$info[name]";
			if($configurable) $url .= "&collapse_info=1";
			
			$data['list'][$_label] = array(
				'url' => $url,
				'label' => $label,
				'icon' => $info['icon'], 
			);
		}
		
		ksort($data['list']);
		$data['list'] = array_values($data['list']); 

		if($this->wire('config')->ajax) header("Content-Type: application/json");
		return json_encode($data);
	}

	/**
	 * Load all modules, install any requested, and render a list of all modules
	 *
	 */
	public function ___execute() {

		foreach($this->modules as $module) {
			$this->modulesArray[$module->className()] = 1; 
		}
		foreach($this->modules->getInstallable() as $module) {
			$this->modulesArray[basename(basename($module, '.php'), '.module')] = 0; 
		}
		ksort($this->modulesArray); 

		if($this->input->post->install) {
			$this->session->CSRF->validate();
			$name = $this->wire('sanitizer')->name($this->input->post->install);
			if($name && isset($this->modulesArray[$name]) && !$this->modulesArray[$name]) {
				$module = $this->modules->install($name, array('force' => true)); 		
				if($module) {
					$this->modulesArray[$name] = 1;
					$this->session->message($this->_("Module Install") . " - $name"); // Message that precedes the name of the module installed
					$this->session->redirect("edit?name=$name");
				} else {
					$this->session->error($this->_('Error installing module') . " - $name");
					$this->session->redirect("./");
				}
			}
		}

		if($this->input->post->delete) {
			$this->session->CSRF->validate();
			$name = $this->input->post->delete;
			if($name && isset($this->modulesArray[$name])) {
				$info = $this->modules->getModuleInfoVerbose($name); 		
				try {
					$this->modules->delete($name); 
					$this->message($this->_('Deleted module files') . ' - ' . $info['title']); 

				} catch(WireException $e) {
					$this->error($e->getMessage()); 
				}
				$this->session->redirect("./"); 
			}
		}
		
		if($this->input->post->download && $this->input->post->download_name) {
			$this->session->CSRF->validate();
			return $this->downloadConfirm($this->input->post->download_name);
		} else if($this->input->get->download_name) {
			return $this->downloadConfirm($this->input->get->download_name); 
		}
		
		if($this->input->post->upload) {
			$this->session->CSRF->validate();
			$this->executeUpload('upload_module'); 
		}
		
		if($this->input->post->download_zip && $this->input->post->download_zip_url) {
			$this->session->CSRF->validate();
			$this->executeDownloadURL($this->input->post->download_zip_url); 		
		}
		
		if($this->input->post->clear_file_compiler) {
			$this->session->CSRF->validate();
			$compiler = new FileCompiler($this->wire('config')->paths->siteModules); 
			$compiler->clearCache(true);
			$this->session->message($this->_('Cleared file compiler cache'));
			$this->session->redirect('./');
		}	
		
		if($this->input->get->update) {
			$name = $this->sanitizer->name($this->input->get->update); 
			if(isset($this->modulesArray[$name])) return $this->downloadConfirm($name, true); 
		}

		if($this->input->get->reset == 1) {
			$this->modules->resetCache();
			$this->message(sprintf($this->_('Modules cache refreshed (%d modules)'), count($this->modules)));
			$edit = $this->input->get->edit;
			$duplicates = $this->modules->duplicates()->getDuplicates();
			foreach($duplicates as $className => $files) {
				$dup = $this->modules->duplicates()->getDuplicates($className); 
				if(!count($dup['files'])) continue; 
				$msg = sprintf($this->_('Module "%s" has multiple files (bold file is the one in use).'), $className) . ' ' . 
					"<a href='./edit?name=$className'>" . $this->_('Click here to change which file is used') . "</a><pre>";
				foreach($dup['files'] as $file) {
					if($dup['using'] == $file) $file = "<b>$file</b>";
					$msg .= "\n$file";
				}
				$this->message("$msg</pre>", Notice::allowMarkup);
			}
			if($edit) $this->session->redirect("./edit?name=" . $this->sanitizer->fieldName($edit) . "&reset=2"); 
				else $this->session->redirect("./?reset=2");
		}

		return $this->renderList();
	}	


	/**
	 * Render a list of all modules
	 *
	 */
	protected function renderList() {

		// module arrays: array(moduleName => 0 (uninstalled) or 1 (installed))
		$modulesArray = $this->modulesArray; 
		$installedArray = array();
		$uninstalledArray = array();
		$configurableArray = array();
		$uninstalledNames = array();
		$siteModulesArray = array();
		$coreModulesArray = array();
		$newModulesArray = array(); 
		
		if($this->wire('input')->post('new_seconds')) {
			$this->wire('session')->set('ProcessModuleNewSeconds', (int) $this->wire('input')->post('new_seconds')); 
		}
		$newSeconds = (int) $this->wire('session')->get('ProcessModuleNewSeconds'); 
		if(!$newSeconds) $newSeconds = 86400; 

		foreach($modulesArray as $name => $installed) {
			
			if($installed) {
				$installedArray[$name] = $installed;
				$errors = $this->modules->getDependencyErrors($name); 
				if($errors) foreach($errors as $error) $this->error($error); 
			} else {
				$uninstalledNames[] = $name;
				$uninstalledArray[$name] = $installed;
			}
		
			$info = $this->modules->getModuleInfoVerbose($name); 
			
			$isNew = !$info['core'] || ($info['core'] && in_array($name, $this->newCoreModules));
			if($isNew) $isNew = $info['created'] > 0 && $info['created'] > (time()-$newSeconds);
			if($isNew) $newModulesArray[$name] = $installed; 
			
			if($info['core']) {
				$coreModulesArray[$name] = $installed;
			} else {
				$siteModulesArray[$name] = $installed;
			}
			
			if($info['configurable'] && $info['installed']) {
				$flags = $this->modules->getFlags($name);
				if(!($flags & Modules::flagsNoUserConfig)) {
					$configurableArray[$name] = $installed;
				}
			}
		}

		$form = $this->modules->get('InputfieldForm');
		$form->attr('action', './'); 
		$form->attr('method', 'post'); 
		$form->attr('enctype', 'multipart/form-data'); 
		$form->attr('id', 'modules_form');

		$this->modules->get('JqueryWireTabs');
		
		// site 
		
		$tab = $this->wire(new InputfieldWrapper());
		$tab->attr('id', 'tab_site_modules'); 
		$tab->attr('title', $this->labels['site']);
		$tab->attr('class', 'WireTab');

		$button = $this->modules->get('InputfieldSubmit');
		$button->attr('name', 'clear_file_compiler');
		$button->attr('value', $this->_('Clear compiled files'));
		$button->addClass('ui-priority-secondary');
		$button->icon = 'trash-o';
		
		$markup = $this->modules->get('InputfieldMarkup');
		$markup->label = $this->_('/site/modules/ - Modules specific to your site');
		$markup->icon = 'folder-open-o';
		$markup->value .= $this->renderListTable($siteModulesArray, true);
		$markup->value .= "<p class='detail'><i class='fa fa-fw fa-star'></i> " . sprintf($this->_('Browse the modules directory at %s'), "<a target='_blank' href='http://modules.processwire.com'>modules.processwire.com</a>") . "</p>"; 
		$markup->value .= "<p class='detail'><i class='fa fa-fw fa-eraser'></i> " .  $this->_("To remove a module, click the module to edit, check the Uninstall box, then save. Once uninstalled, the module's file(s) may be removed from /site/modules/. If it still appears in the list above, you may need to click the Refresh button for ProcessWire to see the change."); // Instructions on how to remove a module
		$markup->value .= "<p class='detail'><i class='fa fa-fw fa-info-circle'></i> " . $this->_('The button below clears compiled site modules and template files, forcing them to be re-compiled the next time they are accessed. Note that this may cause a temporary delay for one or more requests while files are re-compiled.') . "</p>";
		$markup->value .= "<p class='detail'>" . $button->render() . "</p>";
		$tab->add($markup);
		
		$form->add($tab); 
		
		// core
		
		$tab = $this->wire(new InputfieldWrapper());
		$tab->attr('id', 'tab_core_modules'); 
		$tab->attr('title', $this->labels['core']);
		$tab->attr('class', 'WireTab');
		
		$markup = $this->modules->get('InputfieldMarkup');
		$markup->value = $this->renderListTable($coreModulesArray);
		$markup->label = $this->_('/wire/modules/ - Modules included with the ProcessWire core');
		$markup->icon = 'folder-open-o';
		$tab->add($markup); 
		$form->add($tab);
		
		// configurable
		
		$tab = $this->wire(new InputfieldWrapper());
		$tab->attr('id', 'tab_configurable_modules');
		$tab->attr('title', $this->labels['configure']);
		$tab->attr('class', 'WireTab');

		$markup = $this->modules->get('InputfieldMarkup');
		$markup->value = $this->renderListTable($configurableArray, true, true, false, false, true);
		$markup->label = $this->_('Modules that have configuration options');
		$markup->icon = 'folder-open-o';
		$tab->add($markup);
		$form->add($tab);

		// installable

		$tab = $this->wire(new InputfieldWrapper());
		$tab->attr('id', 'tab_install_modules');
		$tabLabel = $this->labels['install']; 
		$tab->attr('title', $tabLabel); 
		$tab->attr('class', 'WireTab');

		$markup = $this->modules->get('InputfieldMarkup');
		$markup->value = $this->renderListTable($uninstalledArray, true, true, false, false, true);
		$markup->label = $this->_('Modules on the file system that are not currently installed');
		$markup->icon = 'folder-open-o';
		$tab->add($markup);
		$form->add($tab);


		// new
		
		$tab = $this->wire(new InputfieldWrapper());
		$tab->attr('id', 'tab_new_modules'); 
		$tab->attr('title', $this->_('New'));
		$tab->attr('class', 'WireTab');

		$newModules = $this->wire('session')->get($this, 'newModules'); 
		if($newModules) foreach($newModules as $name => $created) {
			if(!is_numeric($name) && !isset($newModulesArray[$name])) {
				// add to newModulesArray and identify as uninstalled
				$newModulesArray[$name] = 0;
			}
		}
		
		$select = $this->wire('modules')->get('InputfieldSelect'); 
		$select->attr('name', 'new_seconds'); 
		$select->addClass('modules_filter'); 
		$select->addOption(3600, $this->_('Within the last hour'));
		$select->addOption(86400, $this->_('Within the last day'));
		$select->addOption(604800, $this->_('Within the last week'));
		$select->addOption(2419200, $this->_('Within the last month')); 
		$select->required = true; 
		$select->attr('value', $newSeconds);
		$markup = $this->modules->get('InputfieldMarkup');
		$markup->icon = 'lightbulb-o';
		$markup->value = $select->render() . $this->renderListTable($newModulesArray, false, false, true, true);
		$markup->label = $this->_('Recently Found and Installed Modules');
		$tab->add($markup); 
		
		$fieldset = $this->modules->get('InputfieldFieldset');
		$fieldset->label = $this->labels['download_dir'];
		$fieldset->icon = 'cloud-download';
		//if($this->wire('input')->post('new_seconds')) $fieldset->collapsed = Inputfield::collapsedYes; 
		$f = $this->modules->get('InputfieldName');
		$f->attr('id+name', 'download_name');
		$f->label = $this->_('Module Class Name');
		$f->description = $this->_('You may browse the modules directory and locate the module you want to download and install. Type or paste in the "class name" for the module you want to install.');
		$f->notes = $this->_('The modules directory is located at [modules.processwire.com](http://modules.processwire.com)'); 
		$f->attr('placeholder', $this->_('ModuleClassName')); // placeholder
		$f->required = false; 
		$fieldset->add($f);
		
		$f = $this->modules->get('InputfieldSubmit');
		$f->attr('id+name', 'download');
		$f->value = $this->labels['download_install'];
		$f->icon = $fieldset->icon;
		$fieldset->add($f);
		$tab->add($fieldset);
		
		$fieldset = $this->modules->get('InputfieldFieldset');
		$fieldset->label = $this->labels['download_zip'];
		$fieldset->icon = 'download';
		$fieldset->collapsed = Inputfield::collapsedYes;
		$trustNote = $this->_('Be absolutely certain that you trust the source of the ZIP file.'); 
		
		$f = $this->modules->get('InputfieldURL');
		$f->attr('id+name', 'download_zip_url');
		$f->label = $this->_('Module ZIP file URL');
		$f->description = $this->_('Download a ZIP file containing a module. If you download a module that is already installed, the installed version will be overwritten with the newly downloaded version.'); 
		$f->notes = $trustNote; 
		$f->attr('placeholder', $this->_('http://domain.com/ModuleName.zip')); // placeholder
		$f->required = false;
		$fieldset->add($f);

		$f = $this->modules->get('InputfieldSubmit');
		$f->attr('id+name', 'download_zip');
		$f->value = $this->labels['download'];
		$f->icon = $fieldset->icon;
		$fieldset->add($f);
		$tab->add($fieldset);
		
		$fieldset = $this->modules->get('InputfieldFieldset'); 
		$fieldset->label = $this->labels['upload_zip'];
		$fieldset->icon = 'upload';
		$fieldset->collapsed = Inputfield::collapsedYes;
		$f = $this->modules->get('InputfieldFile');
		$f->extensions = 'zip';
		$f->maxFiles = 1; 
		$f->descriptionRows = 0;
		$f->overwrite = true; 
		$f->attr('id+name', 'upload_module');
		$f->label = $this->_('Module ZIP File');
		$f->description = $this->_('Upload a ZIP file containing module file(s). If you upload a module that is already installed, it will be overwritten with the one you upload.'); 
		$f->notes = $trustNote; 
		$f->required = false;
		$f->noCustomButton = true;
		$fieldset->add($f);
		$f = $this->modules->get('InputfieldSubmit');
		$f->attr('id+name', 'upload');
		$f->value = $this->labels['upload'];
		$f->icon = $fieldset->icon;
		$fieldset->add($f);
		$tab->add($fieldset);
		
		$fieldset = $this->modules->get('InputfieldFieldset');
		$fieldset->attr('id', 'fieldset_check_new'); 
		$fieldset->label = $this->labels['reset'];
		$fieldset->description = $this->_('If you have placed new modules in /site/modules/ yourself, click this button to find them.');
		$fieldset->collapsed = Inputfield::collapsedYes; 
		$fieldset->icon = 'refresh';
		$submit = $this->modules->get('InputfieldButton');
		$submit->attr('href', './?reset=1');
		$submit->attr('id', 'reset_modules');
		$submit->showInHeader();
		$submit->attr('name', 'reset');
		$submit->attr('value', $this->labels['reset']);
		$submit->icon = $fieldset->icon;
		$fieldset->add($submit);
		$tab->add($fieldset);

		$form->add($tab);
	
		// if($this->input->get->reset == 2 && !$this->numFound) $this->message($this->_("No new modules found")); 
		$this->session->ModulesUninstalled = $uninstalledNames;

		return $form->render(); 
	}

	/**
	 * Render a modules listing table, as it appears in the 'site' and 'core' tabs
	 * 
	 * @param array $modulesArray
	 * @param bool $allowDelete Whether or not delete is allowed (default=false)
	 * @param bool $allowSections Whether to show module sections/categories (default=true)
	 * @param bool $allowDates Whether to show created dates (default=false)
	 * @param bool $allowClasses Whether to show module class names(default=false)
	 * @param bool $allowType Whether to show if module is site or core
	 * @return string
	 * 
	 */
	protected function renderListTable($modulesArray, $allowDelete = false, $allowSections = true, $allowDates = false, $allowClasses = false, $allowType = false) {
		
		if(!count($modulesArray)) return "<div class='ProcessModuleNoneFound'>" . $this->_('No modules found.') . "</div>";
		
		static $numCalls = 0; 
		$numCalls++;
		
		$uninstalledPrev = is_array($this->session->ModulesUninstalled) ? $this->session->ModulesUninstalled : array();
		$section = 'none';
		$tableHeader = array(
			$this->_x('Module', 'list'),	// Modules list table header for 'Module' column 
			$this->_x('Version', 'list'), 	// Modules list table header for 'Version' column
			$this->_x('Summary', 'list')	// Modules list table header for 'Summary' column
		);
		$table = null;
		$total = 0;
		$out = '';
		$this->numFound = 0;
		$newModules = $this->wire('session')->get($this, 'newModules');
		if(!is_array($newModules)) $newModules = array();

		$sections = array();
		$sectionsQty = array();

		foreach($modulesArray as $name => $installed) {

			if(strpos($name, $section) !== 0 || preg_match('/' . $section . '[^A-Z0-9]/', $name)) {
				if(!preg_match('/^([A-Za-z][a-z]+)/', $name, $matches)) $this->error(sprintf($this->_('Invalid module name: %s'), $name));
				if($allowSections || is_null($table)) { 
					$section = $matches[1];
					$sections[] = $section;
					if($table) $out .= $table->render() . "</div>";
					$table = $this->modules->get("MarkupAdminDataTable");
					$table->setEncodeEntities(false);
					$table->headerRow($tableHeader);
					if($allowSections) $out .= "\n<div class='modules_section modules_$section'><h2>$section</h2>";
				}
			}
			
			$info = $this->modules->getModuleInfoVerbose($name); 
			
			// $interfaces = @class_implements($name, false);
			// $configurable = is_array($interfaces) && in_array('ConfigurableModule', $interfaces);
			$configurable = $info['configurable'];
			$title = !empty($info['title']) ? $this->wire('sanitizer')->entities1($info['title']) : substr($name, strlen($section));
			if($allowClasses) $title .= "<br /><small class='ModuleClass ui-priority-secondary'>$name</small>";
			if($info['icon']) $title = "<i class='fa fa-fw fa-$info[icon]'></i> $title"; 
			$class = $configurable ? 'ConfigurableModule' : '';
			if(!empty($info['permanent'])) $class .= ($class ? ' ' : '') . 'PermanentModule';
			if($class) $title = "<span class='$class'>$title</span>";
			$version = $this->formatVersion(isset($info['version']) ? $info['version'] : 0);
			if($allowType) $version .= "<br /><small class='ModuleClass ui-priority-secondary'>" . ($info['core'] ? $this->labels['core'] : $this->labels['site']) . "</small>";
			$summary = empty($info['summary']) ? '' : $this->wire('sanitizer')->entities1($info['summary']);
			if(strpos($summary, '&lt;') !== false) $summary = preg_replace('/([^\s]{35})[^\s]{20,}/', '$1...', $summary); // prevent excessively long text without whitespace
			$summary .= empty($info['href']) ? '' : (" <a href='$info[href]'>" . $this->_('more') . "</a>");
			if($summary) $summary = "<p class='module-summary'>$summary</p>";
			$buttons = '';
			$confirmDeleteJS = "return confirm('" . sprintf($this->_('Delete %s?'), $name) . "')";
			$confirmInstallJS = "return confirm('" . sprintf($this->_('Module requirements are not fulfilled so installing may cause problems. Are you sure you want to install?'), $name) . "')";
			$editUrl = "edit?name={$name}";

			if(!$installed) {

				if(count($info['requires'])) {
					$requires = $this->modules->getRequiresForInstall($name);
					if(count($requires)) {
						foreach($requires as $key => $value) {
							$nameOnly = preg_replace('/^([_a-zA-Z0-9]+)[=<>]+.*$/', '$1', $value);
							$requiresInfo = $this->modules->getModuleInfo($nameOnly); 
							if(!empty($requiresInfo['error'])) $requires[$key] = "<a href='./?download_name=$nameOnly'>$value</a>";
						}
						$summary .= "<span class='notes requires'>" . $this->labels['requires'] . " - " . implode(', ', $requires) . "</span>";
					}
				} else $requires = array();

				if(count($info['installs'])) {
					$summary .= "<span class='detail installs'>" . $this->labels['installs'] . " - " . implode(', ', $info['installs']) . "</span>";
				}

				$class = 'not_installed';
				if(count($uninstalledPrev) && !in_array($name, $uninstalledPrev)) {
					$class .= " new_module";
					if(!$this->input->get->uninstalled) $this->message($this->_("Found new module") . " - $name"); // Message that precedes module name when new module is found
					$newModules[$name] = time();
					$this->numFound++;
				}

				$title = "<span data-name='$name' class='$class'>$title</span>";

				if(count($requires)) {
					$buttonState = 'ui-state-default ui-state-disabled';
					$buttonType = 'button';
				} else {
				}
				$isConfirm = count($modulesArray) == 1 && $this->wire('input')->get('name');
				$buttonState = 'ui-state-default';
				$buttonPriority = $isConfirm ? "ui-priority-primary" : "ui-priority-secondary";
				$buttonType = 'submit';
				$buttonWarning = '';
				if(count($requires)) {
					$buttonWarning = " onclick=\"$confirmInstallJS\"";
					$icon = 'fa-warning';
				} else {
					$icon = 'fa-sign-in';
				}
				$buttons .=
					"<button type='$buttonType' name='install'$buttonWarning data-install='$name' " . 
						"class='install_$name $buttonState ui-button $buttonPriority' value='$name'>" .
						"<span class='ui-button-text'>" . 
							"<i class='fa $icon'></i> " . 
							$this->labels['install_btn'] . 
						"</span>" . 
					"</button>"; 
				
				// install confirm, needs a cancel button
				if($isConfirm) $buttons .=
					"<button type='$buttonType' name='cancel' class='cancel_$name ui-button ui-priority-secondary' value='$name'>" .
						"<span class='ui-button-text'>" . 
							"<i class='fa fa-times-circle'></i> " . 
							$this->labels['cancel'] . 
						"</span>" . 
					"</button>"; 

				if($allowDelete && $this->wire('modules')->isDeleteable($name)) $buttons .= 
					"<button type='submit' name='delete' data-delete='$name' " . 
						"class='delete_$name ui-state-default ui-priority-secondary ui-button' " . 
						"value='$name' onclick=\"$confirmDeleteJS\">" . 
						"<span class='ui-button-text'>" . 
							"<i class='fa fa-eraser'></i> " . 
							$this->_x('Delete', 'button') . 
						"</span>" . 
					"</button>"; 

				$editUrl = '#';

			} else if($configurable) {
				$flags = $this->modules->getFlags($name);
				if(!($flags & Modules::flagsNoUserConfig)) {
					$buttons .=
						"<button type='button' class='ProcessModuleSettings ui-state-default ui-button'>" .
						"<span class='ui-button-text'><i class='fa fa-cog'></i> " . $this->_x('Settings', 'button') . "</span></button>"; // Text for 'Settings' button
				}
			}

			if($buttons) $buttons = "<small class='buttons'>$buttons</small>";
			
			if($allowDates) { 
				$summary .= "<span class='detail date'>";
				$summary .= $installed ? $this->labels['installed_date'] : $this->_('Found');
				$created = isset($newModules[$name]) ? $newModules[$name] : $info['created']; 
				$summary .= ': ' . wireRelativeTimeStr($created) . "</span>";
			}

			$row = array(
				$title => $editUrl,
				$version,
				$summary . $buttons,
				);

			$table->row($row);
			$total++;
			
			if(!isset($sectionsQty[$section])) $sectionsQty[$section] = 0;
			$sectionsQty[$section]++;

		}
		$out .= $table->render();
		
		if($allowSections) {
			$out .= "</div>";
			$select = "<p><select name='modules_section$numCalls' class='modules_filter modules_section_select'>";
			$select .= "<option value=''>" . $this->_('Show All') . "</option>";
			$current = $this->wire('input')->cookie("modules_section$numCalls");
			foreach($sections as $section) {
				$qty = $sectionsQty[$section]; 
				$selected = $current == $section ? " selected='selected'" : "";
				$select .= "<option$selected value='$section'>$section ($qty)</option>";
			}
			$select .= "</select></p>";
			$out = $select . $out; 
		}

		// modules that have no file or info present get removed from newModules
		$resetNewModules = false; 
		foreach($newModules as $key => $newModule) {
			$info = $this->wire('modules')->getModuleInfoVerbose($newModule); 
			if(!$info['file'] || !file_exists($info['file'])) {
				unset($newModules[$key]); 
				$resetNewModules = true;
			}
		}
		
		// if any new modules were found, this also forces rewrite of session data
		if($this->numFound) $resetNewModules = true; 
	
		// rewrite session data
		if($resetNewModules) $this->wire('session')->set($this, 'newModules', $newModules); 
		
		return $out; 
	}

	/**
	 * Checks for compatibility, polls the modules directory web service and returns rendered markup for the download info table and confirmation form
	 * 
	 * @param $name Class name of module
	 * @param bool $update Whether this is a 'check for updates' request
	 * @return string
	 * 
	 */
	protected function downloadConfirm($name, $update = false) {
	
		$name = $this->wire('sanitizer')->name($name); 
		$info = self::getModuleInfo();
		$this->wire('processHeadline', $this->labels['download_install']); 
		$this->wire('breadcrumbs')->add(new Breadcrumb('./', $info['title']));
		if($update) $this->wire('breadcrumbs')->add(new Breadcrumb("./?edit=$name", $name)); 
		
		$redirectURL = $update ? "./edit?name=$name" : "./";
		$className = $name; 
		$url = trim($this->wire('config')->moduleServiceURL, '/') . "/$className/?apikey=" . $this->wire('sanitizer')->name($this->wire('config')->moduleServiceKey);
		$http = $this->wire(new WireHttp());
		$data = $http->get($url); 
		if(empty($data)) {
			$this->error($this->_('Error retrieving data from web service URL') . ' - ' . $http->getError());
			return $this->session->redirect($redirectURL);
		}
		$data = json_decode($data, true); 
		if(empty($data)) {
			$this->error($this->_('Error decoding JSON from web service')); 
			return $this->session->redirect($redirectURL);
		}
		if($data['status'] !== 'success') {
			$this->error($this->_('Error reported by web service:') . ' ' . $this->wire('sanitizer')->entities($data['error']));
			return $this->session->redirect($redirectURL);	
		}
	
		$installable = true; 
		foreach($data['categories'] as $category) {
			if(!in_array($category['name'], $this->uninstallableCategories)) continue;
			$this->error(sprintf($this->_('Sorry modules of type "%s" are not installable from the admin.'), $category['title']));
			$installable = false;
		}
		if(!$installable) $this->session->redirect($redirectURL); 
	
		$form = $this->buildDownloadConfirmForm($data, $update);
		return $form->render(); 	
	}

	/**
	 * Builds a confirmation form and table showing information about the requested module before download
	 * 
	 * @param array $data Array of information about the module from the directory service
	 * @param bool $update Whether or not this is an 'update module' request
	 * @return InputfieldForm
	 * 
	 */
	protected function ___buildDownloadConfirmForm(array $data, $update = false) {
		
		$warnings = array();
		$authors = '';
		
		foreach($data['authors'] as $author) $authors .= $author['title'] . ", ";
		$authors = rtrim($authors, ", ");

		$compat = '';
		$isCompat = false;
		$myVersion = substr($this->wire('config')->version, 0, 3);
		foreach($data['pw_versions'] as $v) {
			$compat .= $v['name'] . ", ";
			if(version_compare($v['name'], $myVersion) >= 0) $isCompat = true;
		}
		$compat = trim($compat, ", ");
		if(!$isCompat) $warnings[] = $this->_('This module does not indicate compatibility with this version of ProcessWire. It may still work, but you may want to check with the module author.');

		$form = $this->wire('modules')->get('InputfieldForm');
		$form->attr('action', './download/');
		$form->attr('method', 'post');
		$form->attr('id', 'ModuleInfo');
		$markup = $this->wire('modules')->get('InputfieldMarkup');
		$form->add($markup);
		
		$installed = $this->modules->isInstalled($data['class_name']) ? $this->modules->getModuleInfoVerbose($data['class_name']) : null;
	
		$moduleVersionNote = '';
		if($installed) {
			$installedVersion = $this->formatVersion($installed['version']); 
			if($installedVersion == $data['module_version']) {
				$note = $this->_('Current installed version is already up-to-date'); 
				$installedVersion .= ' - ' . $note;
				$this->message($note); 
				$this->session->redirect("./edit?name=$data[class_name]"); 
			} else {
				if(version_compare($installedVersion, $data['module_version']) < 0) {
					$this->message($this->_('An update to this module is available!')); 
				} else {
					$moduleVersionNote = " <span class='ui-state-error-text'>(" . $this->_('older than the one you already have installed!') . ")</span>";
				}
			}
		} else {
			$installedVersion = $this->_x('Not yet', 'install-table');
		}

		$table = $this->wire('modules')->get('MarkupAdminDataTable');
		$table->setEncodeEntities(false);
		$table->row(array($this->_x('Class', 'install-table'), $this->wire('sanitizer')->entities($data['class_name'])));
		$table->row(array($this->_x('Version', 'install-table'), $this->wire('sanitizer')->entities($data['module_version']) . $moduleVersionNote));
		$table->row(array($this->_x('Installed?', 'install-table'), $installedVersion)); 
		$table->row(array($this->_x('Authors', 'install-table'), $this->wire('sanitizer')->entities($authors)));
		$table->row(array($this->_x('Summary', 'install-table'), $this->wire('sanitizer')->entities($data['summary'])));
		$table->row(array($this->_x('Release State', 'install-table'), $this->wire('sanitizer')->entities($data['release_state']['title'])));
		$table->row(array($this->_x('Compatibility', 'install-table'), $this->wire('sanitizer')->entities($compat)));
		
		// $this->message("<pre>" . print_r($data, true) . "</pre>", Notice::allowMarkup); 
		$installable = true; 
		if(!empty($data['requires_versions'])) {
			$requiresVersions = array();
			foreach($data['requires_versions'] as $name => $requires) {
				list($op, $ver) = $requires;
				$label = $ver ? $this->sanitizer->entities("$name $op $ver") : $this->sanitizer->entities($name);
				if($this->modules->isInstalled("$name$op$ver") || in_array($name, $data['installs'])) {
					// installed
					$requiresVersions[] = "$label <i class='fa fa-fw fa-thumbs-up'></i>";
				} else if($this->modules->isInstalled($name)) {
					// installed, but version isn't adequate
					$installable = false;
					$info = $this->modules->getModuleInfo($name);
					$requiresVersions[] = $this->sanitizer->entities($name) . " " . $this->modules->formatVersion($info['version']) . " " . 
						"<span class='ui-state-error-text'>" . $this->sanitizer->entities("$op $ver") . " " . 
						"<i class='fa fa-fw fa-thumbs-down'></i></span>";
				} else {
					// not installed at all
					$requiresVersions[] = "<span class='ui-state-error-text'>$label <i class='fa fa-fw fa-thumbs-down'></i></span>";
					$installable = false; 
				}
			}
			$table->row(array($this->labels['requires'], implode('<br />', $requiresVersions))); 
			if(!$installable) $this->error("Module is not installable because not all required dependencies are currently met."); 
		}
		if(!empty($data['installs'])) {
			$installs = $this->sanitizer->entities(implode("\n", $data['installs'])); 
			$table->row(array($this->labels['installs'], nl2br($installs))); 
		}

		$links = array();

		$moduleName = $this->wire('sanitizer')->entities1($data['name']);
		$links[] = "<a target='_blank' href='http://modules.processwire.com/modules/$moduleName/'>" . $this->_('More Information') . "</a>";

		if($data['project_url']) {
			$projectURL = $this->wire('sanitizer')->entities($data['project_url']);
			$links[] = "<a target='_blank' href='$projectURL'>" . $this->_('Project Page') . "</a>";
		}

		if($data['forum_url']) {
			$forumURL = $this->wire('sanitizer')->entities($data['forum_url']);
			$links[] = "<a target='_blank' href='$forumURL'>" . $this->_('Support Page') . "</a>";
		}

		if(count($links)) $table->row(array($this->_x('Links', 'install-table'), implode(' &nbsp;/&nbsp; ', $links)));

		if($data['download_url']) {
			$downloadURL = $this->wire('sanitizer')->entities($data['download_url']);
			$table->row(array($this->_x('ZIP file', 'install-table'), $downloadURL));
			$warnings[] = $this->_('Ensure that you trust the source of the ZIP file above before continuing!');
		} else {
			$warnings[] = $this->_('This module has no download URL specified and must be installed manually.');
		}

		foreach($warnings as $warning) {
			$table->row(array($this->_x('Please Note', 'install-table'), "<strong class='ui-state-error-text'> $warning</strong>"));
		}

		$markup->value = $table->render();

		if($installable && $data['download_url']) {
			$btn = $this->wire('modules')->get('InputfieldSubmit');
			$btn->attr('id+name', 'godownload');
			$btn->value = $this->labels['download_install'];
			$btn->icon = 'cloud-download';
			if($update) $btn->value .= " ($data[module_version])";
			$form->add($btn);
			$this->session->ProcessModuleDownloadURL = $data['download_url'];
			$this->session->ProcessModuleClassName = $data['class_name'];
		} else {
			$this->session->remove('ProcessModuleDownloadURL');
			$this->session->remove('ProcessModuleClassName');
		}

		$btn = $this->wire('modules')->get('InputfieldButton');
		$btn->attr('name', 'cancel');
		$btn->href = $update ? "./edit?name=$data[class_name]" : './';
		$btn->value = $this->labels['cancel']; 
		$btn->icon = 'times-circle';
		$btn->class .= ' ui-priority-secondary';
		$form->add($btn);

		$form->description = $this->wire('sanitizer')->entities($data['title']); 
		return $form;
	}

	/**
	 * Triggered on the /download/ action - Downloads a module from the directory
	 * 
	 * Most code lifted from Soma's Modules Manager
	 * 
	 * @return string Rendered output or redirect
	 * @throws WireException
	 * 
	 */
	public function ___executeDownload() {

		if(!$this->input->post->godownload) {
			$this->message($this->_('Download cancelled')); 
			return $this->session->redirect('../'); 
		}
		
		$this->session->CSRF->validate();
		$this->modules->resetCache();

		$url = $this->session->ProcessModuleDownloadURL;
		$className = $this->session->ProcessModuleClassName;
		
		$this->session->remove('ProcessModuleDownloadURL');
		$this->session->remove('ProcessModuleClassName'); 
		
		if(!$url) throw new WireException("No download URL specified"); 
		if(!$className) throw new WireException("No class name specified");

		$destinationDir = $this->wire('config')->paths->siteModules . $className . '/';
		$install = $this->wire(new ProcessModuleInstall());
		
		$completedDir = $install->downloadModule($url, $destinationDir);
		if($completedDir) {
			return $this->buildDownloadSuccessForm($className)->render();
		} else {
			return $this->session->redirect('../'); 
		}
	}

	/**
	 * Build the form that gets displayed after a module has been successfully downloaded
	 * 
	 * @param string $className
	 * @return InputfieldForm
	 * 
	 */
	protected function ___buildDownloadSuccessForm($className) {
		
		$form = $this->modules->get('InputfieldForm');

		// check if modules isn't already installed and this isn't an update
		if(!$this->modules->isInstalled($className)) {
			
			$info = $this->wire('modules')->getModuleInfoVerbose($className);
			$requires = array();
			if(count($info['requires'])) $requires = $this->modules->getRequiresForInstall($className);
			if(count($requires)) { 
				foreach($requires as $moduleName) {
					$this->error("$className - " . sprintf($this->_('Requires module "%s" before it can be installed'), $moduleName), Notice::warning | Notice::allowMarkup); 
				}
				$this->wire('session')->redirect('../'); 
			}

			$this->wire('processHeadline', $this->_('Downloaded:') . ' ' . $className);

			$form->description = sprintf($this->_('%s is ready to install'), $className);
			$form->attr('action', '../');
			$form->attr('method', 'post');
			$form->attr('id', 'install_confirm_form');

			$f = $this->modules->get('InputfieldHidden');
			$f->attr('name', 'install');
			$f->attr('value', $className);
			$form->add($f);
		
			$submit = $this->modules->get('InputfieldSubmit');
			$submit->attr('name', 'submit');
			$submit->attr('id', 'install_now');
			$submit->attr('value', $this->_('Install Now'));
			$submit->icon = 'sign-in';
			$form->add($submit);

			$button = $this->modules->get('InputfieldButton');
			$button->attr('href', '../');
			$button->attr('value', $this->_('Leave Uninstalled'));
			$button->class .= " ui-priority-secondary";
			$button->icon = 'times-circle';
			$button->attr('id', 'no_install');
			$form->add($button);

		} else {

			$this->wire('processHeadline', $this->_('Updated:') . ' ' . $className);
			$form->description = sprintf($this->_('%s was updated successfully.'), $className);
			$button = $this->modules->get('InputfieldButton');
			$button->attr('href', "../?reset=1&edit=$className");
			$button->attr('value', $this->_('Continue to module settings'));
			$button->attr('id', 'gosettings');
			$form->add($button);
		}
		
		return $form;
	}
	
	/**********************************************************************************************************************************************************/
	
	public function ___executeUpload($inputName = '') {
		if(!$inputName) throw new WireException("This URL may be be accessed directly"); 
		$install = $this->wire(new ProcessModuleInstall());
		$install->uploadModule($inputName);
		$this->session->redirect('./?reset=1'); 
	}
	
	public function ___executeDownloadURL($url = '') {
		if(!$url) throw new WireException("This URL may be be accessed directly");
		$install = $this->wire(new ProcessModuleInstall());
		$install->downloadModule($url);
		$this->session->redirect('./?reset=1'); 
	}

	/**********************************************************************************************************************************************************/

	/**
	 * Load the form for editing a module's settings
	 *
	 */
	public function ___executeEdit() {

		$info = null; 
		$moduleName = '';
		$out = '';

		if(isset($_POST['name'])) $moduleName = $_POST['name']; 
			else if(isset($_GET['name'])) $moduleName = $_GET['name'];

		$moduleName = $this->sanitizer->name($moduleName); 

		if(!$moduleName || !$info = $this->modules->getModuleInfoVerbose($moduleName)) {
			$this->session->message($this->_("No module specified")); 
			$this->session->redirect("./"); 
		}

		return $this->renderEdit($moduleName, $info); 

	}

	/**
	 * Build and render for the form for editing a module's settings
	 *
	 * This method saves the settings if it's form has been posted
	 *
	 */
	protected function renderEdit($moduleName, $moduleInfo) {

		$out = ''; 
		$moduleId = $this->modules->getModuleID($moduleName); 
		$languages = $this->wire('languages');
		$submitSave = $this->input->post('submit_save_module');
		$collapseInfo = '';
		if($submitSave || $this->wire('input')->get('collapse_info') || $this->wire('input')->get('modal')) {
			$collapseInfo = '&collapse_info=1';
		}
		if(!$moduleId) {
			$this->error("Unknown module"); 
			return $this->session->redirect('./'); 
		}
		if($this->wire('input')->get('refresh') == $moduleName) {
			$this->wire('modules')->resetCache();
			$this->session->redirect("./edit?name=$moduleName$collapseInfo");
			return;
		}
		$sinfo = self::getModuleInfo();
		$flags = $this->modules->getFlags($moduleName);
		$allowDisabledFlag = 
			($this->wire('config')->debug && $this->wire('config')->advanced && ($flags & Modules::flagsAutoload)) ||
			($flags & Modules::flagsDisabled);

		$this->wire('breadcrumbs')->add(new Breadcrumb('./', $sinfo['title'])); 
		$this->wire('processHeadline', $moduleInfo['title']); 

		/** @var InputfieldForm $form */
		$form = $this->modules->get("InputfieldForm"); 
		$form->attr('id', 'ModuleEditForm'); 
		$form->attr('action', "edit?name=$moduleName$collapseInfo"); 
		$form->attr('method', 'post'); 

		$fields = array();
		$dependents = $this->modules->getRequiredBy($moduleName, true); 
		$requirements = $this->modules->getRequires($moduleName, false, true); 
		$dependentsStr = '';
		$requirementsStr = '';
		foreach($dependents as $name) $dependentsStr .= ($dependentsStr ? ', ' : '') . "<a href='./edit?name=$name'>$name</a>";
		foreach($requirements as $name) {
			if(preg_match('/^([^<>!=]+)([<>!=]+.*)$/', $name, $matches)) {
				$name = $matches[1];
				$extra = "<span class='detail'>$matches[2]</span>";
			} else $extra = '';
			if($name == 'PHP' || $name == 'ProcessWire') {
				$requirementsStr .= ($requirementsStr ? ', ' : '') . "$name$extra";
			} else {
				$requirementsStr .= ($requirementsStr ? ', ' : '') . "<a href='./edit?name=$name'>$name</a>$extra";
			}
		}
		
		// identify duplicates
		$duplicates = $this->modules->duplicates()->getDuplicates($moduleName); 
		if(count($duplicates['files'])) {
			$field = $this->modules->get('InputfieldRadios'); 
			$field->attr('name', '_use_duplicate');
			$field->label = $this->_('Module file to use'); 
			$field->icon = 'files-o';
			$field->description = $this->_('There are multiple copies of this module. Select the module file you want to use.'); 
			foreach($duplicates['files'] as $file) {
				$field->addOption($file); 
			}
			$field->attr('value', $duplicates['using']); 
			$form->add($field); 
		}
		
		$fields = $this->wire('modules')->getModuleConfigInputfields($moduleName); 
		if($fields) {
			foreach($fields as $field) {
				$form->add($field);
			}
		}

		// uninstall checkbox
		$field = $this->modules->get("InputfieldCheckbox"); 
		$field->attr('id+name', 'uninstall'); 
		$field->attr('value', $moduleName); 
		$field->collapsed = Inputfield::collapsedYes; 
		$field->icon = 'times-circle';
		$field->label = $this->_x("Uninstall", 'checkbox');

		$reason = $this->modules->isUninstallable($moduleName, true); 
		$uninstallable = $reason === true; 

		if($uninstallable) {
			$field->description = $this->_("Uninstall this module? After uninstalling, you may remove the modules files from the server if it is not in use by any other modules."); // Uninstall field description
			if(count($moduleInfo['installs'])) {
				$uninstalls = $this->wire('modules')->getUninstalls($moduleName);
				if(count($uninstalls)) $field->notes = $this->_("This will also uninstall other modules") . " - " . implode(', ', $uninstalls); // Text that precedes a list of modules that are also uninstalled
			}

		} else {
			$field->attr('disabled', 'disabled');
			$field->label .= " " . $this->_("(Disabled)"); 
			$field->description = $this->_("Can't uninstall module") . " - " . $reason; // Text that precedes a reason why the module can't be uninstalled
			$dependents2 = $this->modules->getRequiresForUninstall($moduleName); 
			if(count($dependents2)) $field->notes = $this->_("You must first uninstall other modules") . " - " . implode(', ', $dependents2); // Text that precedes a list of modules that must be uninstalled first
		}

		$form->append($field); 

		// submit button
		if(count($form->children)) {
			$field = $this->modules->get("InputfieldSubmit"); 
			$field->attr('name', 'submit_save_module'); 
			$field->showInHeader();
			$field->addActionValue('exit', sprintf($this->_('%s + Exit'), $field->attr('value')), 'times');
			$form->append($field);
			
		} else {
			$this->message($this->_("This module doesn't have any fields to configure")); 
		}
	
		$data = null;
		if($languages && $fields) {
			// multi-language support for Inputfield with useLanguages==true
			// we populate the language values from module config data so module doesn't have to do this
			$data = $this->modules->getModuleConfigData($moduleName);
			foreach($fields->getAll() as $field) {
				if(!$field->getSetting('useLanguages')) continue;
				foreach($languages as $language) {
					if($language->isDefault()) continue;
					$name = $field->name . '__' . $language->id;
					if(!isset($data[$name])) continue;
					$field->set("value$language->id", $data[$name]);
				}
			}
		}

		// check for submitted form
		if($submitSave) {

			if(is_null($data)) $data = $this->modules->getModuleConfigData($moduleName);
			$form->processInput($this->input->post); 
			$updatedNames = array();
			
			if(count($fields)) foreach($fields->getAll() as $field) {
				// note field names beginning with '_' will not be stored	
				if(($name = $field->attr('name')) && strpos($name, '_') !== 0) {
					$value = $field->attr('value');
					if(!isset($data[$name]) || $value != $data[$name]) $updatedNames[] = $name;
					$data[$name] = $value;
					// multi-language, if Inputfield specifies useLanguages==true
					// convert value1234 inputfield values to module config data in name__1234 format
					if($languages && $field->getSetting('useLanguages')) {
						$_name = $name;
						foreach($languages as $language) {
							if($language->isDefault()) continue;
							$name = $_name . "__" . $language->id;
							$value = $field->get("value$language->id");
							if(!isset($data[$name]) || $value != $data[$name]) $updatedNames[] = $name;
							$data[$name] = $value;
						}
					}
				}
			}
		
			if($uninstallable && $this->input->post->uninstall === $moduleName) {
				$this->modules->uninstall($moduleName); 	
				$this->session->message($this->_("Uninstalled Module") . " - $moduleName"); // Message shown before the name of a module that was just uninstalled
				$redirectURL = './?uninstalled=1'; 
			} else {
				$this->modules->saveModuleConfigData($moduleName, $data);
				$updatedNames = count($updatedNames) ? ' (' . implode(', ', $updatedNames) . ')' : '';
				$this->message($this->_("Saved Module") . " - $moduleName $updatedNames"); // Message shown before the name of a module that was just saved
				$redirectURL = $submitSave == 'exit' ? './' : "./edit?name=$moduleName$collapseInfo"; 
				if($allowDisabledFlag) {
					// module is autoload and has an option to diable
					if($this->input->post('_flags_disabled')) {
						// add disabled flag
						if(!($flags & Modules::flagsDisabled)) $this->modules->setFlag($moduleName, Modules::flagsDisabled, true);
					} else {
						// remove disabled flag
						if($flags & Modules::flagsDisabled) $this->modules->setFlag($moduleName, Modules::flagsDisabled, false); 
					}
				}
				
				if(count($duplicates['files'])) {
					$file = $form->getChildByName('_use_duplicate')->attr('value');
					if($file != $duplicates['using'] && in_array($file, $duplicates['files'])) {
						$this->modules->duplicates()->setUseDuplicate($moduleName, $file);
						$this->message("Updated $moduleName to use file: $file", Notice::debug);
						$redirectURL .= "&refresh=$moduleName";
					}
				}
			}
			
			$this->wire('session')->redirect($redirectURL);
		}

		// entity encode module info since it's turned off in our table
		foreach($moduleInfo as $key => $value) {
			if(!is_string($value)) continue; 
			$moduleInfo[$key] = $this->wire('sanitizer')->entities1($value);
		}
	
		$version = $this->formatVersion($moduleInfo['version']);
		$filename = str_replace($this->wire('config')->paths->root, '/', $this->wire('modules')->getModuleFile($moduleName)); 
		if(!$moduleInfo['core']) {
			$version .= " - <a href='./?update=$moduleName'>" . $this->_('check for updates') . "</a>"; 
		}

		$hooksStr = $this->renderModuleHooks($moduleName); 	
		
		// build a table that displays module info
		$table = $this->modules->get("MarkupAdminDataTable"); 
		$table->setResponsive(false);
		$table->setEncodeEntities(false); 
		$table->setSortable(false);
		$table->row(array($this->_x('Title', 'edit'), $moduleInfo['title'])); 
		$table->row(array($this->_x('Class', 'edit'), $moduleName));
		$table->row(array($this->_x('File', 'edit'), str_replace('/', 
			// this sillyness allows for multi-line wrapping without the appearance of space.
			// someone please tell me if there is a better way to do this. I suspect there is, so
			// will leave it out here in the open rather hide it in ProcessModule.css
			'<span style="display:inline-block;width:1px;overflow:hidden;"> </span>/', $filename))); 
	
		if($this->wire('config')->debug) {
			if($moduleInfo['namespace'] === '') $namespace = "\\" . __NAMESPACE__ . ' ' . $this->_('(default namespace)'); 
				else if($moduleInfo['namespace'] === "\\") $namespace = $this->_('None (root namespace)');
				else $namespace = $moduleInfo['namespace'];
			$table->row(array($this->_x('Namespace', 'edit'), $namespace)); 
			$table->row(array($this->_x('ID', 'edit'), $moduleId)); 
		}
		$table->row(array($this->_x('Version', 'edit'), $version)); 
		if(!empty($moduleInfo['created'])) $table->row(array($this->labels['installed_date'], wireRelativeTimeStr($moduleInfo['created'])));
		if(!empty($moduleInfo['author'])) $table->row(array($this->_x('Author', 'edit'), $moduleInfo['author'])); 
		$table->row(array($this->_x('Summary', 'edit'), $moduleInfo['summary'])); 
		if($requirementsStr) $table->row(array($this->_x('Requires', 'edit'), $requirementsStr)); 
		if($dependentsStr) $table->row(array($this->_x('Required By', 'edit'), $dependentsStr)); 
		if(!empty($moduleInfo['permission'])) $table->row(array($this->_x('Required Permission', 'edit'), $moduleInfo['permission']));
		if($hooksStr) $table->row(array($this->_x('Hooks To', 'edit'), $hooksStr)); 
		if(!empty($moduleInfo['href'])) $table->row(array($this->_x('More Information', 'edit'), "<a class='label' href='$moduleInfo[href]'>$moduleInfo[href]</a>"));
		
		if($allowDisabledFlag) {
			$checked = $flags & Modules::flagsDisabled ? " checked='checked'" : "";
			$table->row(array($this->_x('Debug', 'edit'), 
				"<label class='checkbox'><input type='checkbox' name='_flags_disabled' value='1' $checked /> " . 
				$this->_('Autoload disabled?') . " <span class='detail'>" . 
				$this->_('Be careful, checking this box can break the module or your site. Use for temporary testing only.') . "</span></label>"));
		}

		$field = $this->modules->get("InputfieldMarkup"); 
		$field->attr('id', 'ModuleInfo'); 
		$field->attr('value', $table->render()); 
		$field->label = $this->_x("Module Information", 'edit');
		$field->icon = 'info-circle';
		if($collapseInfo) $field->collapsed = Inputfield::collapsedYes;
		$form->prepend($field); 

		$out .= $form->render();

		return $out; 
	}
	
	protected function renderModuleHooks($moduleName) {
		$out = '';
		$hooks = array_merge($this->wire()->getHooks('*'), $this->wire('hooks')->getAllLocalHooks());
		foreach($hooks as $hook) {
			$toObject = !empty($hook['toObject']) ? $hook['toObject'] : '';
			if(empty($toObject) || wireClassName($toObject, false) != $moduleName) continue;
			$suffix = $hook['options']['type'] == 'method' ? '()' : '';
			$when = '';
			if($hook['options']['before']) $when .= $this->_('before');
			if($hook['options']['after']) $when .= ($when ? '+' : '') . $this->_('after');
			if($when) $when .= ".";
			if($out) $when = ", $when";
			$when = "<span class='detail'>$when</span>";
			$out .= "$when" . ($hook['options']['fromClass'] ? $hook['options']['fromClass'] . '::' : '') . "$hook[method]$suffix";
		}
		return $out;
	}
	
	public function ___executeInstallConfirm() {
		
		$name = $this->wire('input')->get('name');
		if(!$name) throw new WireException("No module name specified"); 
		$name = $this->wire('sanitizer')->fieldName($name); 
		if(!$this->wire('modules')->isInstallable($name, true)) throw new WireException("Module is not currently installable"); 
		
		$this->headline($this->labels['install']); 
		
		$form = $this->modules->get('InputfieldForm');
		$form->attr('action', './');
		$form->attr('method', 'post');
		$form->description = sprintf($this->_('Install %s?'), $name); 
		
		$modulesArray[$name] = (int) $this->modules->isInstalled($name); 
		$markup = $this->modules->get('InputfieldMarkup');
		$markup->value = $this->renderListTable($modulesArray, false, false, false, true, true);
		$form->add($markup);
		
		return $form->render();
	}
}