<?php
/* SVN FILE: $Id$ */

/**
 * Scaffold.
 *
 * Automatic forms and actions generation for rapid web application development.
 *
 * PHP versions 4 and 5
 *
 * CakePHP :  Rapid Development Framework <http://www.cakephp.org/>
 * Copyright (c)	2006, Cake Software Foundation, Inc.
 *								1785 E. Sahara Avenue, Suite 490-204
 *								Las Vegas, Nevada 89104
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @filesource
 * @copyright		Copyright (c) 2006, Cake Software Foundation, Inc.
 * @link				http://www.cakefoundation.org/projects/info/cakephp CakePHP Project
 * @package			cake
 * @subpackage		cake.cake.libs.controller
 * @since		Cake v 0.10.0.1076
 * @version			$Revision$
 * @modifiedby		$LastChangedBy$
 * @lastmodified	$Date$
 * @license			http://www.opensource.org/licenses/mit-license.php The MIT License
 */

/**
 * Scaffolding is a set of automatic views, forms and controllers for starting web development work faster.
 *
 * Scaffold inspects your database tables, and making educated guesses, sets up a
 * number of pages for each of your Models. These pages have data forms that work,
 * and afford the web developer an early look at the data, and the possibility to over-ride
 * scaffolded actions with custom-made ones.
 *
 * @package		cake
 * @subpackage	cake.cake.libs.controller
 */
class Scaffold extends Object{

/**
 *  Name of view to render
 *
 * @var string
 */
	 var $actionView = null;

/**
 * Class name of model
 *
 * @var unknown_type
 */
	 var $modelKey = null;

/**
 * Controller object
 *
 * @var Controller
 */
	 var $controllerClass = null;

/**
 * Name of scaffolded Model
 *
 * @var string
 */
	 var $modelName = null;

/**
 * Title HTML element for current scaffolded view
 *
 * @var string
 */
	 var $scaffoldTitle = null;

/**
 * Base URL
 *
 * @var string
 */
	 var $base = false;

/**
 * Construct and set up given controller with given parameters.
 *
 * @param string $controller_class Name of controller
 * @param array $params
 */
	 function __construct(&$controller, $params) {
		  $this->controllerClass           =&$controller;
		  $this->actionView                =$controller->action;
		  $this->modelKey                  =ucwords(Inflector::singularize($controller->name));
		  $this->scaffoldTitle             =Inflector::humanize($this->modelKey);
		  $this->viewPath                  =Inflector::underscore($controller->name);
		  $this->controllerClass->pageTitle=$this->scaffoldTitle;
		  $this->controllerClass->pageTitle=
			  'Scaffold :: ' . Inflector::humanize($controller->action) . ' :: ' . Inflector::humanize(
																											  Inflector::pluralize(
																												  $this->modelKey));
		  $this->__scaffold($params);
	 }

/**
 * Renders a view view of scaffolded Model.
 *
 * @param array $params
 * @return A rendered view of a row from Models database table
 * @access private
 */
	 function __scaffoldView($params) {
		  if ($this->controllerClass->_beforeScaffold('view')) {
				$this->controllerClass->params['data']=$this->controllerClass->{$this->modelKey}->read();
				$this->controllerClass->set('data', $this->controllerClass->params['data']);
				$this->controllerClass->set('fieldNames',
													 $this->controllerClass->generateFieldNames(
														 $this->controllerClass->params['data'], false));

				if (file_exists(APP . 'views' . DS . $this->viewPath . DS . 'scaffold.view.thtml')) {
					 return $this->controllerClass->render($this->actionView, '',
																			APP . 'views' . DS . $this->viewPath . DS . 'scaffold.view.thtml');
				} elseif(file_exists(APP . 'views' . DS . 'scaffold' . DS . 'scaffold.view.thtml')) {
					 return $this->controllerClass->render($this->actionView, '',
																			APP . 'views' . DS . 'scaffold' . DS . 'scaffold.view.thtml');
				} else {
					 return $this->controllerClass->render($this->actionView, '', LIBS . 'view' . DS . 'templates'
																			. DS . 'scaffolds' . DS . 'view.thtml');
				}
		  } else if($this->controllerClass->_scaffoldError('view') === false) {
				return $this->__scaffoldError();
		  }
	 }

/**
 * Renders List view of scaffolded Model.
 *
 * @param array $params
 * @return A rendered view listing rows from Models database table
 * @access private
 */
	 function __scaffoldIndex($params) {
		  if ($this->controllerClass->_beforeScaffold('index')) {
				$this->controllerClass->set('fieldNames',
													 $this->controllerClass->generateFieldNames(null, false));
				$this->controllerClass->{$this->modelKey}->recursive=0;
				$this->controllerClass->set('data', $this->controllerClass->{$this->modelKey}->findAll());

				if (file_exists(APP . 'views' . DS . $this->viewPath . DS . 'scaffold.index.thtml')) {
					 return $this->controllerClass->render($this->actionView, '',
																			APP . 'views' . DS . $this->viewPath . DS . 'scaffold.index.thtml');
				} elseif(file_exists(APP . 'views' . DS . 'scaffold' . DS . 'scaffold.index.thtml')) {
					 return $this->controllerClass->render($this->actionView, '',
																			APP . 'views' . DS . 'scaffold' . DS . 'scaffold.index.thtml');
				} else {
					 return $this->controllerClass->render($this->actionView, '', LIBS . 'view' . DS . 'templates'
																			. DS . 'scaffolds' . DS . 'index.thtml');
				}
		  } else if($this->controllerClass->_scaffoldError('index') === false) {
				return $this->__scaffoldError();
		  }
	 }

/**
 * Renders an Add or Edit view for scaffolded Model.
 *
 * @param array $params
 * @param string $params add or edit
 * @return A rendered view with a form to edit or add a record in the Models database table
 * @access private
 */
	 function __scaffoldForm($params = array(), $type) {
		  $thtml='edit';
		  $form ='Edit';

		  if ($type === 'add') {
				$thtml='add';
				$form ='Add';
		  }

		  if ($this->controllerClass->_beforeScaffold($type)) {
				if ($type == 'edit') {
					 $this->controllerClass->params['data']=$this->controllerClass->{$this->modelKey}->read();
					 $this->controllerClass->set('fieldNames',
														  $this->controllerClass->generateFieldNames(
															  $this->controllerClass->params['data']));
					 $this->controllerClass->set('data', $this->controllerClass->params['data']);
				} else {
					 $this->controllerClass->set('fieldNames', $this->controllerClass->generateFieldNames());
				}

				$this->controllerClass->set('type', $form);

				if (file_exists(APP . 'views' . DS . $this->viewPath . DS . 'scaffold.' . $thtml . '.thtml')) {
					 return $this->controllerClass->render($this->actionView, '',
																			APP . 'views' . DS . $this->viewPath . DS . 'scaffold.' . $thtml . '.thtml');
				} elseif(file_exists(APP . 'views' . DS . 'scaffold' . DS . 'scaffold.' . $thtml . '.thtml')) {
					 return $this->controllerClass->render($this->actionView, '',
																			APP . 'views' . DS . 'scaffold' . DS . 'scaffold.' . $thtml . '.thtml');
				} else {
					 return $this->controllerClass->render($this->actionView, '', LIBS . 'view' . DS . 'templates'
																			. DS . 'scaffolds' . DS . 'edit.thtml');
				}
		  } else if($this->controllerClass->_scaffoldError($type) === false) {
				return $this->__scaffoldError();
		  }
	 }

/**
 *
 * Saves or updates a model.
 *
 * @param array $params
 * @param string $type create or update
 * @return success on save/update, add/edit form if data is empty or error if save or update fails
 * @access private
 */
	 function __scaffoldSave($params = array(), $type) {
		  $thtml    ='edit';
		  $form     ='Edit';
		  $success  ='updated';
		  $formError='edit';

		  if ($this->controllerClass->_beforeScaffold($type)) {
				if (empty($this->controllerClass->params['data'])) {
					 if ($type === 'create') {
						  $formError = 'add';
					 }

					 return $this->__scaffoldForm($params, $formError);
				}

				$this->controllerClass->set('fieldNames', $this->controllerClass->generateFieldNames());
				$this->controllerClass->cleanUpFields();

				if ($type == 'create') {
					 $this->controllerClass->{$this->modelKey}->create();
					 $thtml  ='add';
					 $form   ='Add';
					 $success='saved';
				}

				if ($this->controllerClass->{$this->modelKey}->save($this->controllerClass->params['data'])) {
					 if ($this->controllerClass->_afterScaffoldSave($type)) {
						  if (is_object($this->controllerClass->Session)) {
								$this->controllerClass->Session->setFlash(
									'The ' . Inflector::humanize($this->modelKey) . ' has been ' . $success . '.');
								$this->controllerClass->redirect(
									'/' . Inflector::underscore($this->controllerClass->viewPath));
						  } else {
								return $this->controllerClass->flash(
											 'The ' . Inflector::humanize($this->modelKey) . ' has been ' . $success
												 . '.',
											 '/' . Inflector::underscore($this->controllerClass->viewPath));
						  }
					 } else {
						  return $this->controllerClass->_afterScaffoldSaveError($type);
					 }
				} else {
					 if (is_object($this->controllerClass->Session)) {
						  $this->controllerClass->Session->setFlash('Please correct errors below.');
					 }

					 $this->controllerClass->set('data', $this->controllerClass->params['data']);
					 $this->controllerClass->set('fieldNames',
														  $this->controllerClass->generateFieldNames(
															  $this->__rebuild($this->controllerClass->params['data'])));
					 $this->controllerClass->validateErrors($this->controllerClass->{$this->modelKey});
					 $this->controllerClass->set('type', $form);

					 if (file_exists(
							  APP . 'views' . DS . $this->viewPath . DS . 'scaffolds' . DS . 'scaffold.' . $thtml . '.thtml')) {
						  return $this->controllerClass->render($this->actionView, '',
																				 APP . 'views' . DS . $this->viewPath . DS . 'scaffolds' . DS . 'scaffold.' . $thtml . '.thtml');
					 } elseif(file_exists(APP . 'views' . DS . 'scaffold' . DS . 'scaffold.' . $thtml . '.thtml'))
						 {
						  return $this->controllerClass->render($this->actionView, '',
																				 APP . 'views' . DS . 'scaffold' . DS . 'scaffold.' . $thtml . '.thtml');
					 } else {
						  return $this->controllerClass->render($this->actionView, '',
																				 LIBS . 'view' . DS . 'templates' . DS . 'scaffolds' . DS . 'edit.thtml');
					 }
				}
		  } else if($this->controllerClass->_scaffoldError($type) === false) {
				return $this->__scaffoldError();
		  }
	 }

/**
 * Performs a delete on given scaffolded Model.
 *
 * @param array $params
 * @return success on delete error if delete fails
 * @access private
 */
	 function __scaffoldDelete($params = array()) {
		  if ($this->controllerClass->_beforeScaffold('delete')) {
				$id=$params['pass'][0];

				if ($this->controllerClass->{$this->modelKey}->del($id)) {
					 if (is_object($this->controllerClass->Session)) {
						  $this->controllerClass->Session->setFlash(
							  'The ' . Inflector::humanize($this->modelKey) . ' with id: ' . $id
								  . ' has been deleted.');
						  $this->controllerClass->redirect('/' . Inflector::underscore($this->controllerClass->viewPath));
					 } else {
						  return $this->controllerClass->flash(
										'The ' . Inflector::humanize($this->modelKey) . ' with id: ' . $id
											. ' has been deleted.',
										'/' . Inflector::underscore($this->controllerClass->viewPath));
					 }
				} else {
					 if (is_object($this->controllerClass->Session)) {
						  $this->controllerClass->Session->setFlash(
							  'There was an error deleting the ' . Inflector::humanize($this->modelKey)
								  . ' with the id ' . $id);
						  $this->controllerClass->redirect('/' . Inflector::underscore($this->controllerClass->viewPath));
					 } else {
						  return $this->controllerClass->flash(
										'There was an error deleting the ' . Inflector::humanize($this->modelKey)
											. ' with the id ' . $id,
										'/' . Inflector::underscore($this->controllerClass->viewPath));
					 }
				}
		  } else if($this->controllerClass->_scaffoldError('delete') === false) {
				return $this->__scaffoldError();
		  }
	 }

/**
 * Enter description here...
 *
 * @return unknown
 */
	 function __scaffoldError() {
		  if (file_exists(APP . 'views' . DS . $this->viewPath . DS . 'scaffolds' . DS
									. 'scaffold.error.thtml')) {
				return $this->controllerClass->render($this->actionView, '', APP . 'views' . DS . $this->viewPath
																	  . DS . 'scaffolds' . DS . 'scaffold.error.thtml');
		  } elseif(file_exists(APP . 'views' . DS . 'scaffold' . DS . 'scaffold.error.thtml')) {
				return $this->controllerClass->render($this->actionView, '', APP . 'views' . DS . 'scaffold' . DS
																	  . 'scaffold.error.thtml');
		  } else {
				return $this->controllerClass->render($this->actionView, '', LIBS . 'view' . DS . 'templates' . DS
																	  . 'errors' . DS . 'scaffold_error.thtml');
		  }
	 }

/**
 * When forms are submited the arrays need to be rebuilt if
 * an error occured, here the arrays are rebuilt to structure needed
 *
 * @param array $params data passed to forms
 * @return array rebuilds the association arrays to pass back to Controller::generateFieldNames()
 */
	 function __rebuild($params) {
		  foreach($params as $model => $field) {
				if (!empty($field) && is_array($field)) {
					 $match=array_keys($field);

					 if ($model == $match[0]) {
						  $count=0;

						  foreach($field[$model] as $value) {
								$params[$model][$count][$this->controllerClass->{$this->modelKey}->{$model}->primaryKey]
								= $value;
								$count++;
						  }

						  unset ($params[$model][$model]);
					 }
				}
		  }

		  return $params;
	 }

/**
 * When methods are now present in a controller
 * scaffoldView is used to call default Scaffold methods if:
 * <code>
 * var $scaffold;
 * </code>
 * is placed in the controller's class definition.
 *
 * @param string $url
 * @param string $controller_class
 * @param array $params
 * @since Cake v 0.10.0.172
 * @access private
 */
	 function __scaffold($params) {
		  if (!in_array('Form', $this->controllerClass->helpers)) {
				$this->controllerClass->helpers[] = 'Form';
		  }

		  $this->controllerClass->constructClasses();
		  $db=&ConnectionManager::getDataSource($this->controllerClass->{$this->modelKey}->useDbConfig);

		  if (isset($db)) {
				if ($params['action'] === 'index' || $params['action'] === 'list' || $params['action'] === 'view'
					|| $params['action'] === 'add' || $params['action'] === 'create'
					|| $params['action'] === 'edit' || $params['action'] === 'update'
					|| $params['action'] === 'delete') {
					 switch($params['action'])
						  {
						  case 'index':
								$this->__scaffoldIndex($params);

								break;

						  case 'view':
								$this->__scaffoldView($params);

								break;

						  case 'list':
								$this->__scaffoldIndex($params);

								break;

						  case 'add':
								$this->__scaffoldForm($params, 'add');

								break;

						  case 'edit':
								$this->__scaffoldForm($params, 'edit');

								break;

						  case 'create':
								$this->__scaffoldSave($params, 'create');

								break;

						  case 'update':
								$this->__scaffoldSave($params, 'update');

								break;

						  case 'delete':
								$this->__scaffoldDelete($params);

								break;
						  }
				} else {
					 return $this->cakeError('missingAction', array(array('className' => Inflector::camelize(
																													$params['controller'] . "Controller"),
								 'base' => $this->controllerClass->base,
								 'action' => $params['action'],
								 'webroot' => $this->controllerClass->webroot)));
				}
		  } else {
				return $this->cakeError('missingDatabase',
													array(array('webroot' => $this->controllerClass->webroot)));
		  }
	 }
}
?>