<?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         CakePHP(tm) v 1.2.0.5012
 * @license       http://www.opensource.org/licenses/mit-license.php MIT License
 */

App::uses('AppShell', 'Console/Command');

/**
 * Provides a very basic 'interactive' console for CakePHP apps.
 *
 * @package       Cake.Console.Command
 * @deprecated Deprecated since version 2.4, will be removed in 3.0
 */
class ConsoleShell extends AppShell {

/**
 * Available binding types
 *
 * @var array
 */
	public $associations = array('hasOne', 'hasMany', 'belongsTo', 'hasAndBelongsToMany');

/**
 * Chars that describe invalid commands
 *
 * @var array
 */
	public $badCommandChars = array('$', ';');

/**
 * Available models
 *
 * @var array
 */
	public $models = array();

/**
 * _finished
 *
 * This shell is perpetual, setting this property to true exits the process
 *
 * @var mixed
 */
	protected $_finished = false;

/**
 * _methodPatterns
 *
 * @var array
 */
	protected $_methodPatterns = array(
		'help' => '/^(help|\?)/',
		'_exit' => '/^(quit|exit)/',
		'_models' => '/^models/i',
		'_bind' => '/^(\w+) bind (\w+) (\w+)/',
		'_unbind' => '/^(\w+) unbind (\w+) (\w+)/',
		'_find' => '/.+->find/',
		'_save' => '/.+->save/',
		'_columns' => '/^(\w+) columns/',
		'_routesReload' => '/^routes\s+reload/i',
		'_routesShow' => '/^routes\s+show/i',
		'_routeToString' => '/^route\s+(\(.*\))$/i',
		'_routeToArray' => '/^route\s+(.*)$/i',
	);

/**
 * Override startup of the Shell
 *
 * @return void
 */
	public function startup() {
		App::uses('Dispatcher', 'Routing');
		$this->Dispatcher = new Dispatcher();
		$this->models = App::objects('Model');

		foreach ($this->models as $model) {
			$class = $model;
			App::uses($class, 'Model');
			$this->{$class} = new $class();
		}
		$this->out(__d('cake_console', 'Model classes:'));
		$this->hr();

		foreach ($this->models as $model) {
			$this->out(" - {$model}");
		}

		if (!$this->_loadRoutes()) {
			$message = __d(
				'cake_console',
				'There was an error loading the routes config. Please check that the file exists and contains no errors.'
			);
			$this->err($message);
		}
	}

/**
 * getOptionParser
 *
 * @return void
 */
	public function getOptionParser() {
		$description = array(
			'The interactive console is a tool for testing parts of your',
			'app before you write code.',
			'',
			'See below for a list of supported commands.'
		);

		$epilog = array(
			'<info>Model testing</info>',
			'',
			'To test model results, use the name of your model without a leading $',
			'e.g. Foo->find("all")',
			"",
			'To dynamically set associations, you can do the following:',
			'',
			"\tModelA bind <association> ModelB",
			'',
			"where the supported associations are hasOne, hasMany, belongsTo, hasAndBelongsToMany",
			"",
			'To dynamically remove associations, you can do the following:',
			'',
			"\t ModelA unbind <association> ModelB",
			'',
			"where the supported associations are the same as above",
			"",
			"To save a new field in a model, you can do the following:",
			'',
			"\tModelA->save(array('foo' => 'bar', 'baz' => 0))",
			'',
			"where you are passing a hash of data to be saved in the format",
			"of field => value pairs",
			"",
			"To get column information for a model, use the following:",
			'',
			"\tModelA columns",
			'',
			"which returns a list of columns and their type",
			"",
			'<info>Route testing</info>',
			"",
			'To test URLs against your app\'s route configuration, type:',
			"",
			"\tRoute <url>",
			"",
			"where url is the path to your your action plus any query parameters,",
			"minus the application's base path. For example:",
			"",
			"\tRoute /posts/view/1",
			"",
			"will return something like the following:",
			"",
			"\tarray(",
			"\t  [...]",
			"\t  'controller' => 'posts',",
			"\t  'action' => 'view',",
			"\t  [...]",
			"\t)",
			"",
			'Alternatively, you can use simple array syntax to test reverse',
			'To reload your routes config (Config/routes.php), do the following:',
			"",
			"\tRoutes reload",
			"",
			'To show all connected routes, do the following:',
			'',
			"\tRoutes show",
		);
		return parent::getOptionParser()
			->description($description)
			->epilog($epilog);
	}
/**
 * Prints the help message
 *
 * @return void
 */
	public function help() {
		$optionParser = $this->getOptionParser();
		$this->out($optionParser->epilog());
	}

/**
 * Override main() to handle action
 *
 * @param string $command
 * @return void
 */
	public function main($command = null) {
		$this->_finished = false;
		while (!$this->_finished) {
			if (empty($command)) {
				$command = trim($this->in(''));
			}

			$method = $this->_method($command);

			if ($method) {
				$this->$method($command);
			} else {
				$this->out(__d('cake_console', "Invalid command"));
				$this->out();
			}
			$command = '';
		}
	}

/**
 * Determine the method to process the current command
 *
 * @param string $command
 * @return string or false
 */
	protected function _method($command) {
		foreach ($this->_methodPatterns as $method => $pattern) {
			if (preg_match($pattern, $command)) {
				return $method;
			}
		}

		return false;
	}

/**
 * Set the finiished property so that the loop in main method ends
 *
 * @return void
 */
	protected function _exit() {
		$this->_finished = true;
	}

/**
 * List all models
 *
 * @return void
 */
	protected function _models() {
		$this->out(__d('cake_console', 'Model classes:'));
		$this->hr();
		foreach ($this->models as $model) {
			$this->out(" - {$model}");
		}
	}

/**
 * Bind an association
 *
 * @param mixed $command
 * @return void
 */
	protected function _bind($command) {
		preg_match($this->_methodPatterns[__FUNCTION__], $command, $tmp);

		foreach ($tmp as $data) {
			$data = strip_tags($data);
			$data = str_replace($this->badCommandChars, "", $data);
		}

		$modelA = $tmp[1];
		$association = $tmp[2];
		$modelB = $tmp[3];

		if ($this->_isValidModel($modelA) && $this->_isValidModel($modelB) && in_array($association, $this->associations)) {
			$this->{$modelA}->bindModel(array($association => array($modelB => array('className' => $modelB))), false);
			$this->out(__d('cake_console', "Created %s association between %s and %s",
				$association, $modelA, $modelB));
		} else {
			$this->out(__d('cake_console', "Please verify you are using valid models and association types"));
		}
	}

/**
 * Unbind an association
 *
 * @param mixed $command
 * @return void
 */
	protected function _unbind($command) {
		preg_match($this->_methodPatterns[__FUNCTION__], $command, $tmp);

		foreach ($tmp as $data) {
			$data = strip_tags($data);
			$data = str_replace($this->badCommandChars, "", $data);
		}

		$modelA = $tmp[1];
		$association = $tmp[2];
		$modelB = $tmp[3];

		// Verify that there is actually an association to unbind
		$currentAssociations = $this->{$modelA}->getAssociated();
		$validCurrentAssociation = false;

		foreach ($currentAssociations as $model => $currentAssociation) {
			if ($model == $modelB && $association == $currentAssociation) {
				$validCurrentAssociation = true;
			}
		}

		if ($this->_isValidModel($modelA) && $this->_isValidModel($modelB) && in_array($association, $this->associations) && $validCurrentAssociation) {
			$this->{$modelA}->unbindModel(array($association => array($modelB)));
			$this->out(__d('cake_console', "Removed %s association between %s and %s",
				$association, $modelA, $modelB));
		} else {
			$this->out(__d('cake_console', "Please verify you are using valid models, valid current association, and valid association types"));
		}
	}

/**
 * Perform a find
 *
 * @param mixed $command
 * @return void
 */
	protected function _find($command) {
		$command = strip_tags($command);
		$command = str_replace($this->badCommandChars, "", $command);

		// Do we have a valid model?
		list($modelToCheck, $tmp) = explode('->', $command);

		if ($this->_isValidModel($modelToCheck)) {
			$findCommand = "\$data = \$this->$command;";
			//@codingStandardsIgnoreStart
			@eval($findCommand);
			//@codingStandardsIgnoreEnd

			if (is_array($data)) {
				foreach ($data as $idx => $results) {
					if (is_numeric($idx)) { // findAll() output
						foreach ($results as $modelName => $result) {
							$this->out("$modelName");

							foreach ($result as $field => $value) {
								if (is_array($value)) {
									foreach ($value as $field2 => $value2) {
										$this->out("\t$field2: $value2");
									}

									$this->out();
								} else {
									$this->out("\t$field: $value");
								}
							}
						}
					} else { // find() output
						$this->out($idx);

						foreach ($results as $field => $value) {
							if (is_array($value)) {
								foreach ($value as $field2 => $value2) {
									$this->out("\t$field2: $value2");
								}

								$this->out();
							} else {
								$this->out("\t$field: $value");
							}
						}
					}
				}
			} else {
				$this->out();
				$this->out(__d('cake_console', "No result set found"));
			}
		} else {
			$this->out(__d('cake_console', "%s is not a valid model", $modelToCheck));
		}
	}

/**
 * Save a record
 *
 * @param mixed $command
 * @return void
 */
	protected function _save($command) {
		// Validate the model we're trying to save here
		$command = strip_tags($command);
		$command = str_replace($this->badCommandChars, "", $command);
		list($modelToSave, $tmp) = explode("->", $command);

		if ($this->_isValidModel($modelToSave)) {
			// Extract the array of data we are trying to build
			list(, $data) = explode("->save", $command);
			$data = preg_replace('/^\(*(array)?\(*(.+?)\)*$/i', '\\2', $data);
			$saveCommand = "\$this->{$modelToSave}->save(array('{$modelToSave}' => array({$data})));";
			//@codingStandardsIgnoreStart
			@eval($saveCommand);
			//@codingStandardsIgnoreEnd
			$this->out(__d('cake_console', 'Saved record for %s', $modelToSave));
		}
	}

/**
 * Show the columns for a model
 *
 * @param mixed $command
 * @return void
 */
	protected function _columns($command) {
		preg_match($this->_methodPatterns[__FUNCTION__], $command, $tmp);

		$modelToCheck = strip_tags(str_replace($this->badCommandChars, "", $tmp[1]));

		if ($this->_isValidModel($modelToCheck)) {
			// Get the column info for this model
			$fieldsCommand = "\$data = \$this->{$modelToCheck}->getColumnTypes();";
			//@codingStandardsIgnoreStart
			@eval($fieldsCommand);
			//@codingStandardsIgnoreEnd

			if (is_array($data)) {
				foreach ($data as $field => $type) {
					$this->out("\t{$field}: {$type}");
				}
			}
		} else {
			$this->out(__d('cake_console', "Please verify that you selected a valid model"));
		}
	}

/**
 * Reload route definitions
 *
 * @return void
 */
	protected function _routesReload() {
		if (!$this->_loadRoutes()) {
			return $this->err(__d('cake_console', "There was an error loading the routes config. Please check that the file exists and is free of parse errors."));
		}
		$this->out(__d('cake_console', "Routes configuration reloaded, %d routes connected", count(Router::$routes)));
	}

/**
 * Show all routes
 *
 * @return void
 */
	protected function _routesShow() {
		$this->out(print_r(Hash::combine(Router::$routes, '{n}.template', '{n}.defaults'), true));
	}

/**
 * Parse an array url and show the equivalent url as a string
 *
 * @param mixed $command
 * @return void
 */
	protected function _routeToString($command) {
		preg_match($this->_methodPatterns[__FUNCTION__], $command, $tmp);

		//@codingStandardsIgnoreStart
		if ($url = eval('return array' . $tmp[1] . ';')) {
			//@codingStandardsIgnoreEnd
			$this->out(Router::url($url));
		}
	}

/**
 * Parse a string url and show as an array
 *
 * @param mixed $command
 * @return void
 */
	protected function _routeToArray($command) {
		preg_match($this->_methodPatterns[__FUNCTION__], $command, $tmp);

		$this->out(var_export(Router::parse($tmp[1]), true));
	}

/**
 * Tells if the specified model is included in the list of available models
 *
 * @param string $modelToCheck
 * @return boolean true if is an available model, false otherwise
 */
	protected function _isValidModel($modelToCheck) {
		return in_array($modelToCheck, $this->models);
	}

/**
 * Reloads the routes configuration from app/Config/routes.php, and compiles
 * all routes found
 *
 * @return boolean True if config reload was a success, otherwise false
 */
	protected function _loadRoutes() {
		Router::reload();
		extract(Router::getNamedExpressions());

		//@codingStandardsIgnoreStart
		if (!@include APP . 'Config' . DS . 'routes.php') {
			//@codingStandardsIgnoreEnd
			return false;
		}
		CakePlugin::routes();

		Router::parse('/');
		return true;
	}

}
