<?php

/**
 * An Inputfield for handling a password
 *
 */
class InputfieldPassword extends InputfieldText {

	public static function getModuleInfo() {
		return array(
			'title' => __('Password', __FILE__), // Module Title
			'summary' => __("Password input with confirmation field that doesn't ever echo the input back.", __FILE__), // Module Summary
			'version' => 101,
			'permanent' => true, 
			);
	}

	protected $_page = null;

	public function __construct() {
		parent::__construct();
		$this->attr('type', 'password'); 
		$this->attr('size', 50); 
		$this->attr('maxlength', 256); 
		$this->set('minlength', 6); 
	}

	/**
	 * Sets the page being edited, not always applicable
	 * 
	 * @param Page $page
	 * 
	 */
	public function setPage(Page $page) { 
		$this->_page = $page; 
		if($page->is(Page::statusUnpublished)) $this->required = true; 
	}
	
	public function ___render() {
		$this->label = $this->_('Set Password'); 
		if(!$this->description) $this->set('description', sprintf($this->_("Password must be at least %d characters and have at least 1 letter and 1 digit. Password may not have whitespace."), $this->minlength)); // Description of valid password
		$value = $this->attr('value'); 
		$trackChanges = $this->trackChanges();
		if($trackChanges) $this->setTrackChanges(false);
		$this->attr('value', '');	
		$out =	"\n<p><input " . $this->getAttributesString() . " /></p>" . 
				"\n<p><input type='password' size='{$this->size}' name='_{$this->name}' value='' /> <span class='detail'>" . $this->_('(confirm)') . "</span></p>";
		$this->attr('value', $value);
		if($trackChanges) $this->setTrackChanges(true);
		return $out; 
	}
	
	public function set($key, $value) {
		if($key == 'collapsed' && $this->_page && $this->_page->is(Page::statusUnpublished)) {
			// prevent collapse of field when pass is for unpublished user
			$value = Inputfield::collapsedNo; 
		}
		return parent::set($key, $value);
	}

	public function ___renderValue() {
		return strlen($this->attr('value')) ? '******' : '';
	}

	public function ___processInput(WireInputData $input) {

		parent::___processInput($input);
		
		$key = $this->attr('name'); 
		$value = $this->attr('value'); 

		if(isset($input->$key)) {
			// form was submitted

			if($input->$key) { 
				// password was submitted
				
				$confirmKey = "_" . $key;

				if(preg_match('/[\s\t\r\n]/', $value)) $this->error($this->_("Password contained whitespace.")); 
				if($input->$confirmKey != $input->$key) $this->error($this->_("Passwords do not match.")); 
				if(strlen($value) < $this->minlength) $this->error($this->_("Password is less than required number of characters.")); 
				if(!preg_match('/[a-zA-Z]/', $value)) $this->error($this->_("Password does not contain at least one letter (a-z A-Z).")); 
				if(!preg_match('/\d/', $value)) $this->error($this->_("Password does not contain at least one digit (0-9).")); 

			} else if($this->required) {
				$this->error($this->_("Required password was not specified.")); 
			}

			if(count($this->getErrors())) {
				$this->attr('value', ''); 
				$this->resetTrackChanges(); // don't record a change
			}
			
		}

		return $this;
	}

	/**
	 * Return the fields required to configure an instance of InputfieldPassword
	 *
	 */
	public function ___getConfigInputfields() {
		$inputfields = parent::___getConfigInputfields();
		$skips = array('collapsed', 'placeholder', 'stripTags', 'pattern');
		foreach($skips as $name) {
			$f = $inputfields->get('collapsed');
			if($f) $inputfields->remove($f); 
		}
		return $inputfields; 
	}
}