<?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) < $len)
            throw new InvalidUserDataException($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.');
        
        $validator = new ClubsHelperValidator();
        $addr = '';
        $valid = $validator->validateAddress($address, $addr);
        
        if(! $valid)
            throw new InvalidUserDataException('Die Adresse muss mindestens aus 2 Zeilen bestehen.');
        
        $user->setAddress($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.");
        $validator = new ClubsHelperValidator();
        if(! $validator->validateMail($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
{
    
    private $id;
    /**
     * @var CommonClubsModelClub
     */
    private $club;
    
    public function __construct($id)
    {
        parent::__construct();
        $this->id = $id;
        
        $factory = new CommonClubsModelFactoryClub();
        $this->club = $factory->loadById($id, false);
    }
    
    protected function registerAll()
    {
        $this->registerFcn('name', 'editName');
        $this->registerFcn('address', 'editAddress');
        $this->registerFcn('city', 'editCity');
        $this->registerFcn('homepage', 'editHomepage');
        $this->registerFcn('mail', 'editMail');
        $this->registerFcn('iban', 'editIban');
        $this->registerFcn('bic', 'editBic');
        $this->registerFcn('offers', 'editOffers');
        $this->registerFcn('place', 'editPlace');
    }

    protected function editName($user, $post)
    {
        $name = trim($post->getString('value'));
        $this->checkLen($name, 6, 'Der Name des Vereins muss mindestens 6 Zeichen lang sein.');
        
        // TODO ACL needed
        
        $this->club->setName($name);
        $this->club->save();
    }
    
    protected function editAddress($user, $post)
    {
        $address = trim($post->getString('value'));
        $this->checkLen($address, 10, 'Die Adresse muss mindestens 10 Zeichen lang sein.');
        
        $validator = new ClubsHelperValidator();
        $addr = '';
        $valid = $validator->validateAddress($address, $addr);
        
        if(! $valid)
            throw new InvalidUserDataException('Die Adresse muss mindestens aus 2 Zeilen bestehen.');
            
        // TODO ACL needed
        
        $this->club->setAddress($addr);
        $this->club->save();
    }
    
    protected function editCity($user, $post)
    {
        $city = trim($post->getString('value'));
        $this->checkLen($city, 4, 'Die Stadt muss aus mindestens 4 Zeichen bestehen.');
        
        // TODO ACL needed
        
        $this->club->setCity($city);
        $this->club->save();
    }
    
    protected function editHomepage($user, $post)
    {
        $homepage = trim($post->getString('value'));
        $validator = new ClubsHelperValidator();
        if(!$validator->validateHomepage($homepage))
            throw new InvalidUserDataException('Die URL muss mit "http(s)://domain.tld" beginnen.');
        
        // TODO ACL needed
        
        $this->club->setHomepage($homepage);
        $this->club->save();
    }
    
    protected function editMail($user, $post)
    {
        $mail = trim($post->getString('value'));
        $this->checkLen($mail, 8, "Die Mail-Adresse muss aus mindestens 8 Zeichen bestehen.");
        
        $validator = new ClubsHelperValidator();
        if(! $validator->validateMail($mail))
            throw new InvalidUserDataException('Die Mail-Adresse hat kein gültiges Format.');
            
        $this->club->setMail($mail);
        $this->club->save();
    }
    
    protected function editIban($user, $post)
    {
        $iban = trim($post->getString('value'));
        $this->checkLen($iban, 10, 'Die IBAN muss aus mindestens 10 Zeichen bestehen.');
        
        $validator = new ClubsHelperValidator();
        $formattedIban = null;
        if(! $validator->validateIban($iban, $formattedIban))
            throw new InvalidUserDataException('Die IBAN ist nicht korrekt.');
        
        // TODO ACL needed
        
        $this->club->setIban($iban);
        $this->club->save();
    }
    
    protected function editBic($user, $post)
    {
        $bic = trim($post->getString('value'));
        $this->checkLen($bic, 6, 'Die BIC muss aus mindestens 6 Zeichen bestehen.');
        
        // TODO ACL needed
        
        $this->club->setBic($bic);
        $this->club->save();
    }
    
    protected function editOffers($user, $post)
    {
        $ids = $post->getInt('offers');
        
        // TODO ACL needed
        
        try
        {
            $this->club->setOfferIds($ids);
        }
        catch(ElementNotFoundException $ex)
        {
            throw new InvalidUserDataException('Es gab ein Problem mit der Eingabe. Bitte Seite neu laden und Daten erneut eintragen.');
        }
    }
    
    protected function editPlace($user, $post)
    {
        $factory = new CommonClubsModelFactoryPlace();
        $place = $factory->loadById($this->id);
        
        $name = trim($post->getString('name'));
        $address = $post->getString('address');
        $area = $post->getInt('area');
        
        $validator = new ClubsHelperValidator();
        
        $this->checkLen($name, 5, "Der Name des Saals muss mindestens aus 5 Zeichen bestehen.");
        
        $this->checkLen($address, 10, 'Die Adresse muss mindestens 10 Zeichen lang sein.');
        $addr = '';
        if(!$validator->validateAddress($address, $addr))
        {
            throw new InvalidUserDataException('Die Adresse muss mindestens aus 2 Zeilen bestehen.');
        }
        
        if($area < 0)
            throw new InvalidUserDataException('Die Fläche darf nicht negativ sein.');
        if($area == 0)
            $area = null;
        if($area > 2500)
            throw new InvalidUserDataException('Die Fläche erscheint zu groß zu sein. Wenden Sie sich bitte ggf an den Support.');
        
        // TODO ACL needed
        
        $place->setName($name);
        $place->setAddress($addr);
        $place->setArea($area);
        $place->save();
    }
}

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':
                $clubid = $post->getInt('id', -1);
                $obj = new ClubsHelperControllerClub($clubid);
                $obj->handle($fcnName, $user, $post); // TODO User!?!?!
                break;
                
            default:
                throw new Exception();
        }
        
        $id = (int) $post->getInt('id', -1);
        $addId = '';
        if($id != -1)
            $addId = "&id=$id";
        
        return "index.php?option=com_clubs&view=part&type=$partname$addId";
    }
    
}