<?php

namespace Espo\Utils\Controllers;

use Espo\Utils as Utils,
	Espo\Utils\Api as Api,
	Espo\Utils\Controllers\Controller as Controller;

class Manager
{

	public function __construct()
	{

	}

	/**
    * Manage of all controllers
	*
	* @param array $controllerParams - array('controller' => 'Layout', 'action' => ':name',	'scope' => ':controller');
	* @param array $params - route params, ex. /:controller/layout/:name/ -  array(controller=>Value, name=>Value)
	* @param array $data - request data
	*
	* @return array
	*/
	public function call($controllerParams, $params, $data = '')
	{
		$baseUtils = new Utils\BaseUtils();

		$espoPath = $baseUtils->getObject('Configurator')->get('espoPath');
		$controllerPath= $baseUtils->concatPath($espoPath, 'Utils/Controllers');

		$crud = $baseUtils->getObject('Configurator')->get('crud');
		$baseAction = $crud->$controllerParams['HttpMethod'];
		if (empty($baseAction)) {
			return $this->response(false, 'Cannot find action for HTTP Method ['.$controllerParams['HttpMethod'].']', 404);
		}

		$controller = (object) array(
			'name' => strtolower($controllerParams['controller']),
			'baseAction' => $baseAction,
			'scope' => isset($controllerParams['scope']) ? $controllerParams['scope'] : '',
			'action' => isset($controllerParams['action']) ? $controllerParams['action'] : '',
		);


		if (!empty($controller->scope) && !$baseUtils->isScopeExists($controller->scope)) {
			return $this->response(false, 'Controller for Scope ['.$controller->scope.'] does not exist.', 404);
		}


		//define default values
		$classInfo = new \stdClass();
		$classInfo->name = $this->getClassName($controllerPath, 'Controller');
		$classInfo->path = $this->getClassPath($classInfo->name);
		$classInfo->method = $this->getDefinedMethod($classInfo->name, $controller->baseAction, $controller->action);


		//Espo\Utils\Controlles\Layout  and  Custom\Espo\Utils\Controlles\Layout
		$controllerClass = $this->getClassName($controllerPath, $controller->name);
		$classInfo = $this->setClassInfo($controllerClass, $classInfo, $controller);
		//END: Espo\Utils\Controlles\Layout and Custom\Espo\Utils\Controlles\Layout


		if (!empty($controller->scope)) {
			//path in Modules dir
			$controllerDir = $baseUtils->concatPath( $baseUtils->getScopePath($controller->scope), $baseUtils->getObject('Configurator')->get('controllerPath') );

			//ex. Modules\Crm\Controllers\Layout  and  Cusom\Modules\Crm\Controllers\Layout
			$controllerClass = $this->getClassName($controllerDir, $controller->name);
			$classInfo = $this->setClassInfo($controllerClass, $classInfo, $controller);
			//END: ex. Modules\Crm\controllers\Layout and Cusom\Modules\Crm\controllers\Layout


			//ex. Modules\Crm\Controllers\AccountLayout  and  Custom\Modules\Crm\Controllers\AccountLayout
			$controllerClass = $this->getClassName($controllerDir, $controller->scope.'-'.$controller->name);
			$classInfo = $this->setClassInfo($controllerClass, $classInfo, $controller);
			//END: ex. Modules\Crm\Controllers\AccountLayout and Custom\Modules\Crm\Controllers\AccountLayout
		}


		//CHECK ACTION
		if (empty($classInfo->method)) {
			return $this->response(false, 'Actions ['.$controller->baseAction.'] and ['.$controller->action.'] do not exist.', 404);
		}
		//END: CHECK ACTION


		//call class method
		$className = $classInfo->name;
		$classMethod = $classInfo->method;

		require_once($classInfo->path);
		$class = new $className();

		//call before method if exists: beforeRead, beforeDetailSmall, beforeReadDetailSmall
		$beforeMethod = $this->getDefinedMethod($className, $controller->baseAction, $controller->action, 'before');
		if ( !empty($beforeMethod) ) {
			$class->$beforeMethod($params, $data);
		} //END: call before method if exists

		$result = $class->$classMethod($params, $data);

		//call after method if exists: afterRead, afterDetailSmall, afterReadDetailSmall
		$afterMethod = $this->getDefinedMethod($className, $controller->baseAction, $controller->action, 'after');
		if ( !empty($afterMethod) ) {
			try {
				$class->$afterMethod($params, $data, $result);
			} catch (\Exception $e) {
				$class->$afterMethod($params, $data);
			}
		} //END: call after method if exists


		if (is_array($result)) {

			$returnResult = array_values($result);
			if (!empty($returnResult[2])) {
				return $this->response($returnResult[0], $returnResult[1], $returnResult[2]);
			}
			if (!empty($returnResult[1])) {
				return $this->response($returnResult[0], $returnResult[1]);
			}
			if (!empty($returnResult[0])) {
				return $this->response($returnResult[0]);
			}

			return $this->response(false, 'Cannot find requested controller', 404);
		}

		return $this->response($result);
	}


	/**
    * Check if methods exist in class and return the method name according to priority
	*
	* @param string $className
	*
	* @return sting
	*/
	function getDefinedMethod($className, $baseAction, $action, $prefix = '')
	{
		$allActions= get_class_methods($className);
		$classMethod = '';

		if (!empty($prefix)) {
          $prefix .= '-';
		}

        $baseUtils = new Utils\BaseUtils();

		//method as 'read'
		$prefixBaseAction = $baseUtils->toCamelCase($prefix.$baseAction);
		if ( method_exists($className, $prefixBaseAction) ) {
		   	$classMethod = $prefixBaseAction;
		}

		if (empty($action)) {
			return $classMethod;
		}

		//method as 'detailSmall'
		$prefixAction = $baseUtils->toCamelCase($prefix.$action);
		if ( method_exists($className, $prefixAction) ) {
			$classMethod = $prefixAction;
		}

		//method as 'readDetailSmall'
		$fullAction = $baseUtils->toCamelCase($prefix.$baseAction.'-'.$action);
		if (method_exists($className, $fullAction)) {
			$classMethod = $fullAction;
		}

		return $classMethod;
	}

	/**
    * If method exists, then redefine classInfo
	*
	* @param string $className
	* @param object $classInfo
	* @param object $controller
	* @param bool $isCustom - is need to check custom folder
	*
	* @return object
	*/
	protected function setClassInfo($className, \stdClass $classInfo, \stdClass $controller, $isCustom = true)
	{
		$classPath = $this->getClassPath($className);
		$classMethod = $this->getDefinedMethod($className, $controller->baseAction, $controller->action);

		if (file_exists($classPath) && !empty($classMethod) ) {
			$classInfo->name = $className;
			$classInfo->path = $classPath;
			$classInfo->method = $classMethod;
		}

		if ($isCustom) {
			$baseUtils = new Utils\BaseUtils();
			$espoCustomDir = $baseUtils->getObject('Configurator')->get('espoCustomPath');
			$controllerClass = $espoCustomDir.'\\'.$className;
			$classInfo = $this->setClassInfo($controllerClass, $classInfo, $controller, false);
		}

		return $classInfo;
	}


    /**
    * Get class name from path and name
	*
	* @param string $path
	* @param string $name
	*
	* @return string
	*/
	protected function getClassName($path, $name = '')
	{
		$baseUtils = new Utils\BaseUtils();

		if (!empty($name)) {
		  	$path = $baseUtils->concatPath($path, $baseUtils->toCamelCase($name, true));
		}

		return $baseUtils->toFormat($path, '\\');
	}


	/**
    * Get full class path (inc. "application" and file extension) from path and name
	*
	* @param string $path
	* @param string $name
	*
	* @return string
	*/
	protected function getClassPath($path, $name = '')
	{
		$baseUtils = new Utils\BaseUtils();

        if (!empty($name)) {
        	$path = $baseUtils->concatPath($path, $baseUtils->toCamelCase($name, true));
    	}

		return $baseUtils->concatPath('application', $baseUtils->toFormat($path, '/').'.php');
	}


	/**
    * Prepare response to output
	*
	* @param mixed $data
	* @param string $errMessage
	* @param int $errorCode
	*
	* @return object
	*/
	public function response($data=null, $errMessage='Error', $errorCode=404)
	{
		return (object) array(
			'data' => $data,
			'errMessage' => $errMessage,
			'errCode' => $errorCode,
		);
	}


}


?>