<?php

use Joomla\CMS\MVC\Controller\BaseController;
use Joomla\CMS\Response\JsonResponse;
use Joomla\CMS\Factory;

// No direct access.
defined('_JEXEC') or die;

abstract class UserException extends Exception {}
class InvalidUserDataException extends UserException {}

abstract class AbstractClubsHelperController
{
    
    private $fcnNames;
    
    public function __construct()
    {
        $this->fcnNames = array();
        $this->registerAll();
    }
    
    abstract protected function registerAll();
    
    protected function registerFcn($fcnName, $methodName)
    {
        $this->fcnNames[$fcnName] = $methodName;
    }
    
    public function handle($fcnName, $user, $post)
    {
        if(empty($this->fcnNames[$fcnName]))
            throw new Exception();
        
        $method = $this->fcnNames[$fcnName];
        $this->$method($user, $post);
    }
    
    protected function checkLen($value, $len, $msg)
    {
        if(strlen($value) < 5)
            throw new InvalidUserDataException($msg);
    }
    
}

class ClubsHelperControllerUser extends AbstractClubsHelperController
{
    /**
     * @param string $fcnName
     * @param CommonClubsModelUser $user
     * @param JInput $post
     * @throws Exception
     * @return string
     */
    public function parse($fcnName, $user, $post)
    {
        switch($fcnName)
        {
            case 'name':
                $this->editName($user, $post);
                break;
            case 'username':
                $this->editUsername($user, $post);
                break;
            case 'address':
                $this->editAddress($user, $post);
                break;
            case 'city':
                $this->editCity($user, $post);
                break;
            case 'mail':
                $this->editMail($user, $post);
                break;
            case 'phone':
                $this->editPhone($user, $post);
                break;
            case 'mobile':
                $this->editMobile($user, $post);
                break;
                
            default:
                throw new Exception();
        }
        
        return "index.php?option=com_clubs&view=part&type=user.$fcnName";
    }
    
    
    protected function registerAll()
    {
        $this->registerFcn('name', 'editName');
        $this->registerFcn('username', 'editUsername');
        $this->registerFcn('address', 'editAddress');
        $this->registerFcn('city', 'editCity');
        $this->registerFcn('mail', 'editMail');
        $this->registerFcn('phone', 'editPhone');
        $this->registerFcn('mobile', 'editMobile');
    }
    
    protected function editName($user, $post)
    {
        $name = trim($post->getString('value'));
        $this->checkLen($name, 5, "Der Name muss mindestens 5 Zeichen lang sein.");
        
        $user->setName($name);
        $user->save();
    }
    
    protected function editUsername($user, $post)
    {
        $username = $post->getString('value');
        $validator = new ClubsHelperValidator();
        $res = $validator->validateUsername($user, $username);
        $this->checkLen($username, 5, 'Der Benutzername muss mindestens 5 Zeichen lang sein.');
        
        switch($res)
        {
            case ClubsHelperValidator::USERNAME_VALID:
                $user->setUsername($username);
                $user->save();
                return;
                
            case ClubsHelperValidator::USERNAME_NOT_FREE:
                throw new InvalidUserDataException('Der Benutzername ist bereits vergeben.');
                
            case ClubsHelperValidator::USERNAME_NOT_OK:
                throw new InvalidUserDataException('Der Benutzername ist nicht korrekt formaitert. Er muss mit einem Buchstaben beginnen.');
                
            default:
                throw new Exception();
        }
    }
    
    protected function editAddress($user, $post)
    {
        $address = trim($post->getString('value'));
        $this->checkLen($address, 10, 'Die Adresse muss mindestens 10 Zeichen lang sein.');
        
        $parts = array_filter(explode("\n", str_replace("\r", "\n", $address)));
        if(count($parts) < 2)
            throw new InvalidUserDataException('Die Adresse muss mindestens aus 2 Zeilen bestehen.');
        
        $addr = join("\n", $parts);
        $user->setAddress($addr);
        $user->save();
    }
    
    protected function editCity($user, $post)
    {
        $city = trim($post->getString('value'));
        $this->checkLen($city, 4, 'Die Stadt muss aus mindestens 4 Zeichen bestehen.');
        
        $user->setCity($city);
        $user->save();
    }
    
    protected function editMail($user, $post)
    {
        $mail = trim($post->getString('value'));
        $this->checkLen($mail, 8, "Die Mail-Adresse muss aus mindestens 8 Zeichen bestehen.");
        if(! preg_match('/..*@..*\...*/', $mail))
            throw new InvalidUserDataException('Die Mail-Adresse hat kein gültiges Format.');
        
        $user->setMail($mail);
        $user->save();
    }
    
    protected function editPhone($user, $post)
    {
        $phone = trim($post->getString('value'));
        
        if(strlen($phone) == 0)
        {
            $user->setPhone(null);
            $user->save();
            return;
        }
        
        $validator = new ClubsHelperValidator();
        $phonePlain = '';
        $phoneDigits = '';
        $valid = $validator->validatePhoneNumber($phone, $phonePlain, $phoneDigits);
        
        $this->checkLen($phoneDigits, 6, 'Die Telefonnummer muss mindestens 6 Ziffern umfassen.');
        if(! $valid)
            throw new InvalidUserDataException('Keine gültige Telefonnummer gegeben. Erlaubte Zeichen sind 0-9, -, + und Leerzeichen. Bitte Vorwahl mit angeben.');
        
        $user->setPhone($phonePlain);
        $user->save();
    }
    
    protected function editMobile($user, $post)
    {
        $mobile = trim($post->getString('value'));
        
        if(strlen($mobile) == 0)
        {
            $user->setMobile(null);
            $user->save();
            return;
        }
        
        $validator = new ClubsHelperValidator();
        $mobilePlain = '';
        $mobileDigits = '';
        $valid = $validator->validatePhoneNumber($mobile, $mobilePlain, $mobileDigits);
        
        $this->checkLen($mobileDigits, 6, 'Die Handynummer muss mindestens 6 Ziffern umfassen.');
        if(! $valid)
            throw new InvalidUserDataException('Keine gültige Handynummer gegeben. Erlaubte Zeichen sind 0-9, -, + und Leerzeichen. Bitte Vorwahl mit angeben.');
            
        $user->setMobile($mobilePlain);
        $user->save();
    }

}

class ClubsHelperControllerClub extends AbstractClubsHelperController
{
    protected function registerAll()
    {}

    
}

class ClubsControllerParts extends BaseController
{
    
    public function edit()
    {
        $auth = new ClubsHelperAuth();
        $user = $auth->getCurrentUser();
        $app = Factory::getApplication();
        $post = $app->input->post;
        
        try
        {
            $ret = $this->callMethod($user, $post);
            echo new JsonResponse($ret);
        }
        catch(UserException $e)
        {
            echo new JsonResponse($e);
        }
    }
    
    /**
     * @param CommonClubsModelUser $user
     * @param JInput $post
     */
    private function callMethod($user, $post)
    {
        $partname = $post->getCmd('partname');
        
        if(! preg_match('/.*\..*/', $partname))
            throw new Exception();
        
        list($objname, $fcnName) = explode('.', $partname, 2);
        
        switch($objname)
        {
            case 'user':
                $obj = new ClubsHelperControllerUser();
                $obj->handle($fcnName, $user, $post);
                break;
            
            case 'club':
                $obj = new ClubsHelperControllerClub();
                $obj->handle($fcnName, $user, $post); // TODO User!?!?!
                break;
                
            default:
                throw new Exception();
        }
        return "index.php?option=com_clubs&view=part&type=$partname";
    }
    
}