<?php
if (!defined("ROOT_PATH"))
{
	header("HTTP/1.1 403 Forbidden");
	exit;
}
class pjPaypal extends pjPaypalAppController
{
    private $paymentMethod = 'paypal';

    private $logPrefix;

    public function __construct()
    {
        parent::__construct();
        $this->logPrefix = "Payments | " . get_class($this) . " plugin<br>";
    }

    public function pjActionOptions()
    {
        $this->checkLogin();

        $this->setLayout('pjActionEmpty');

        $params = $this->getParams();

        $this->set('arr', pjPaymentOptionModel::factory()->getOptions($params['foreign_id'], $this->paymentMethod));

        $i18n = pjMultiLangModel::factory()->getMultiLang($params['fid'], 'pjPayment');
        $this->set('i18n', $i18n);
        $locale_arr = pjLocaleModel::factory()->select('t1.*, t2.file')
	        ->join('pjLocaleLanguage', 't2.iso=t1.language_iso', 'left')
	        ->where('t2.file IS NOT NULL')
	        ->orderBy('t1.sort ASC')->findAll()->getData();

        $lp_arr = array();
        $default_locale_id = NULL;
        foreach ($locale_arr as $item)
        {
        	$lp_arr[$item['id']."_"] = $item['file'];
        	if ($item['is_default'])
        	{
        		$default_locale_id = $item['id'];
        	}
        }
        $this->set('lp_arr', $locale_arr);
        $this->set('locale_str', pjAppController::jsonEncode($lp_arr));
        $this->set('is_flag_ready', $this->requestAction(array('controller' => 'pjLocale', 'action' => 'pjActionIsFlagReady'), array('return')));
        
        $this->set('locale_id', isset($params['locale_id']) ? $params['locale_id'] : $default_locale_id);
    }

    public function pjActionSaveOptions()
    {
        $this->checkLogin();

        return true;
    }

    public function pjActionCopyOptions()
    {
        $this->checkLogin();

        return true;
    }

    public function pjActionDeleteOptions()
    {
        $this->checkLogin();

        return true;
    }

    public static function getFormParams($post, $order_arr)
    {
        $params = parent::getFormParams($post, $order_arr);

        $params['locale'] = self::getPaymentLocale($params['locale_id']);
        $params['cancel_url'] = "{$params['notify_url']}&custom={$params['custom']}&cancel_hash={$params['cancel_hash']}";
        $params['charset'] = 'utf-8';

        return $params;
    }

    public static function getPaymentLocale($localeId = null)
    {
        $locale = 'en_US'; // English (default)

        if($localeId && $locale_arr = pjLocaleModel::factory()->select('language_iso')->find($localeId)->getData())
        {
            $lang = strtok($locale_arr['language_iso'], '-');
            if(in_array($locale_arr['language_iso'], array('zh-TW')))
            {
                $lang = 'tw';
            }
            elseif(in_array($locale_arr['language_iso'], array('es', 'es-ES')))
            {
                $lang = 'es_es';
            }
            elseif(strpos($locale_arr['language_iso'], '-NO') || in_array($locale_arr['language_iso'], array('nb', 'nn')))
            {
                $lang = 'no';
            }
            elseif(strpos($locale_arr['language_iso'], '-RU'))
            {
                $lang = 'ru';
            }
            elseif(strpos($locale_arr['language_iso'], '-SE'))
            {
                $lang = 'sv';
            }
            elseif(in_array($locale_arr['language_iso'], array('pt-BR')))
            {
                $lang = 'pt_br';
            }
            elseif(in_array($locale_arr['language_iso'], array('en-AU')))
            {
                $lang = 'en_au';
            }
            elseif(in_array($locale_arr['language_iso'], array('fr-BE', 'fr-FR')))
            {
                $lang = 'fr_fr';
            }
            elseif(in_array($locale_arr['language_iso'], array('fr-CA')))
            {
                $lang = 'fr_ca';
            }
            elseif(strpos($locale_arr['language_iso'], '-GB') || strpos($locale_arr['language_iso'], '-IN') || in_array($locale_arr['language_iso'], array('en-SG')))
            {
                $lang = 'en_gb';
            }
            elseif(in_array($locale_arr['language_iso'], array('zh-HK')))
            {
                $lang = 'hk';
            }

            $locales = array(
                'ar' => 'ar_EG',
                'es' => 'es_XC',
                'es_es' => 'es_ES',
                'de' => 'de_DE',
                'sv' => 'sv_SE',
                'tw' => 'zh_TW',
                'th' => 'th_TH',
                'ru' => 'ru_RU',
                'uk' => 'ru_RU',
                'et' => 'ru_RU',
                'lv' => 'ru_RU',
                'nl' => 'nl_NL',
                'he' => 'he_IL',
                'it' => 'it_IT',
                'ja' => 'ja_JP',
                'id' => 'id_ID',
                'pl' => 'pl_PL',
                'no' => 'no_NO',
                'pt' => 'pt_PT',
                'pt_br' => 'pt_BR',
                'da' => 'da_DK',
                'fo' => 'da_DK',
                'kl' => 'da_DK',
                'en_au' => 'en_AU',
                'ko' => 'ko_KR',
                'fr' => 'fr_XC',
                'fr_fr' => 'fr_FR',
                'fr_ca' => 'fr_CA',
                'en_gb' => 'en_GB',
                'zh' => 'zh_CN',
                'hk' => 'zh_HK',
            );

            if(array_key_exists($lang, $locales))
            {
                $locale = $locales[$lang];
            }
        }

        return $locale;
    }

    public function pjActionGetCustom()
    {
        $request = $this->getParams();
        $custom = isset($request['custom'])? $request['custom']: null;

        if(!empty($custom))
        {
            $this->log($this->logPrefix . "Start confirmation process for: {$custom}<br>Request Data:<br>" . print_r($request, true));
        }
        else
        {
            $this->log($this->logPrefix . "Missing parameters. Cannot start confirmation process.<br>Request Data:<br>" . print_r($request, true));
        }

        return $custom;
    }

	public function pjActionConfirm()
	{
        $params = $this->getParams();
        $request = $params['request'];

        if (!isset($params['key']) || $params['key'] != md5($this->option_arr['private_key'] . PJ_SALT))
        {
            $this->log($this->logPrefix . "Missing or invalid 'key' parameter.");
            return FALSE;
        }

        $response = array('status' => 'FAIL', 'redirect' => false);
        if(isset($request['cancel_hash']) && $request['cancel_hash'] == $params['cancel_hash'])
        {
            $this->log($this->logPrefix . "Payment was cancelled.");
            $response['status'] = 'CANCEL';
            $response['redirect'] = true;
            return $response;
        }

        $options = pjPaymentOptionModel::factory()->getOptions($params['foreign_id'], $this->paymentMethod);

		$url = PJ_TEST_MODE ? 'ssl://ipnpb.sandbox.paypal.com' : 'ssl://ipnpb.paypal.com';
		$host = PJ_TEST_MODE ? 'ipnpb.sandbox.paypal.com' : 'ipnpb.paypal.com';
		$port = 443;
		$timeout = 30;

		// STEP 1: Read POST data
		$req = 'cmd=_notify-validate';
		$get_magic_quotes_exists = false;
		if (function_exists('get_magic_quotes_gpc'))
		{
			$get_magic_quotes_exists = true;
		}
		foreach ($request as $key => $value)
		{
            if($key == 'payment_method') continue; // Ignore this as PayPal returns INVALID if unrecognized parameters are sent for verification

			if ($get_magic_quotes_exists == true && get_magic_quotes_gpc() == 1)
			{
				$value = urlencode(stripslashes($value));
			} else {
				$value = urlencode($value);
			}
			$req .= "&$key=$value";
		}

		// STEP 2: Post IPN data back to paypal to validate
		$header = "POST /cgi-bin/webscr HTTP/1.1\r\n";
		$header .= "Host: $host\r\n";
		$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
		$header .= "User-Agent: PHP-IPN-VerificationScript\r\n";
		$header .= "Content-Length: " . strlen($req) . "\r\n";
		$header .= "Connection: Close\r\n\r\n";
		$fp = fsockopen($url, $port, $errno, $errstr, $timeout);
		
		if (!empty($errstr))
		{
            $this->log($this->logPrefix . "Error: {$errstr}");
		}
		
		// assign posted variables to local variables
		$txn_id           = $request['txn_id'];
		$payment_status   = $request['payment_status'];
		$payment_amount   = @$request[isset($params['amount_index']) ? $params['amount_index'] : 'mc_gross'];
		$receiver_email   = @$request['receiver_email'];
		$payment_currency = $request['mc_currency'];
		
		$response['txn_id'] = $request['txn_id'];

        $data = $request;
        $data['mc_gross'] = $payment_amount;
        $data['payment_date'] = @$request[isset($params['date_index']) ? $params['date_index'] : 'payment_date'];
        $this->pjActionSaveIpn($params['foreign_id'], $data);

		if (!is_array($params['txn_id']))
		{
			$params['txn_id'] = array($params['txn_id']);
		}
		
		if (!$fp)
		{
            $this->log($this->logPrefix . "TXN ID: {$txn_id}<br>HTTP error: {$errstr}");
		} else {
			fwrite($fp, $header . $req);
			while (!feof($fp))
			{
				$buffer = fgets($fp, 1024);
				// STEP 3: Inspect IPN validation result and act accordingly
				if (strcasecmp(trim($buffer), "VERIFIED") == 0)
				{
                    $this->log($this->logPrefix . "TXN ID: {$txn_id}<br>VERIFIED");
					if ($payment_status == "Completed")
					{
                        $this->log($this->logPrefix . "TXN ID: {$txn_id}<br>Completed");
						if (!in_array($txn_id, $params['txn_id']))
						{
                            $this->log($this->logPrefix . "TXN ID: {$txn_id}<br>TXN_ID is OK");
							if ($receiver_email == $options['merchant_email'])
							{
                                $this->log($this->logPrefix . "TXN ID: {$txn_id}<br>EMAIL address is OK");
								if ($payment_amount == $params['amount'])
								{
                                    $this->log($this->logPrefix . "TXN ID: {$txn_id}<br>AMOUNT is OK");
									if ($payment_currency == $this->option_arr['o_currency'])
									{
                                        $response['status'] = 'OK';
                                        $this->log($this->logPrefix . "Payment was successful. TXN ID: {$response['txn_id']}.");
										return $response;
									} else {
                                        $this->log($this->logPrefix . "TXN ID: {$txn_id}<br>CURRENCY didn't match");
									}
								} else {
                                    $this->log($this->logPrefix . "TXN ID: {$txn_id}<br>AMOUNT didn't match: {$payment_amount} != {$params['amount']}");
								}
							} else {
                                $this->log($this->logPrefix . "TXN ID: {$txn_id}<br>EMAIL address didn't match");
							}
						} else {
                            $this->log($this->logPrefix . "TXN ID: {$txn_id}<br>TXN_ID is the same.");
						}
					} else {
						$this->log($this->logPrefix . "TXN ID: {$txn_id}<br>Not Completed");
					}
			    } elseif (strcasecmp($buffer, "INVALID") == 0) {
                    $this->log($this->logPrefix . "TXN ID: {$txn_id}<br>INVALID");
			  	}
			}
			fclose($fp);
		}

		return $response;
	}

	public function pjActionSave($foreign_id, $data=array())
	{
		$this->setLayout('pjActionEmpty');

		$params = $this->getParams();
		if (!isset($params['key']) || $params['key'] != md5($this->option_arr['private_key'] . PJ_SALT))
		{
			return FALSE;
		}

		return $this->pjActionSaveIpn($params['foreign_id'], $params['data']);
	}
	
	private function pjActionSaveIpn($foreign_id, $data)
	{
		return pjPaypalModel::factory()
			->setAttributes(array(
				'foreign_id' => $foreign_id? $foreign_id: ':NULL',
				'subscr_id' => @$data['subscr_id'],
				'txn_id' => @$data['txn_id'],
				'txn_type' => @$data['txn_type'],
				'mc_gross' => @$data['mc_gross'],
				'mc_currency' => @$data['mc_currency'],
				'payer_email' => @$data['payer_email'],
				'dt' => date("Y-m-d H:i:s", strtotime(@$data['payment_date']))
			))
			->insert()
			->getInsertId();
	}
	
	public function pjActionForm()
	{
		$this->setLayout('pjActionEmpty');

		$this->set('arr', $this->getParams());
	}
/**
 * @link https://developer.paypal.com/docs/classic/paypal-payments-standard/integration-guide/Appx_websitestandard_htmlvariables/#id08A6HI00JQU
 */
	public function pjActionSubscribe()
	{
		$this->setAjax(true);
		// KEYS:
		//-------------
		//name
		//id
		//class
		//target
		//business
		//item_name => 127 chars
		//currency_code => 3 chars
		//custom => 255 chars
		//a1_price
		//p1_duration => 1-90 or 1-52 or 1-24 or 1-5 (depend of duration_unit)
		//t1_duration_unit => D,W,M,Y
		//a2_price
		//p2_duration => 1-90 or 1-52 or 1-24 or 1-5 (depend of duration_unit)
		//t2_duration_unit => D,W,M,Y
		//a3_price
		//p3_duration => 1-90 or 1-52 or 1-24 or 1-5 (depend of duration_unit)
		//t3_duration_unit => D,W,M,Y
		//recurring_payments => 0,1
		//recurring_times => 2-52
		//reattempt_on_failure => 0,1
		//return
		//cancel_return
		//notify_url
		//submit
		//submit_class
		$this->set('arr', $this->getParams());
	}

	public function pjActionGetDetails()
	{
		$this->setAjax(true);
	
		if ($this->isXHR() && $this->isLoged() && $this->isAdmin())
		{
		    $id = null;
		    if (class_exists('pjInput'))
            {
                $id = $this->_get->toInt('id');
            }
            elseif (isset($_GET['id']) && (int) $_GET['id'] > 0)
            {
                $id = (int) $_GET['id'];
            }

			if ($id)
			{
				$this->set('arr', pjPaypalModel::factory()->find($id)->getData());
			}
		}
	}
	
	public function pjActionGetPaypal()
	{
		$this->setAjax(true);
	
		if ($this->isXHR() && $this->isLoged() && $this->isAdmin())
		{
			$pjPaypalModel = pjPaypalModel::factory();

			$q = null;
			if (class_exists('pjInput'))
            {
                $q = $this->_get->toString('q');
            }
            elseif (isset($_GET['q']) && !empty($_GET['q']))
            {
                $q = $pjPaypalModel->escapeStr($_GET['q']);
            }
			if ($q)
			{
				$q = str_replace(array('%', '_'), array('\%', '\_'), $q);
				$pjPaypalModel->where('t1.txn_id LIKE', "%$q%");
				$pjPaypalModel->orWhere('t1.txn_type LIKE', "%$q%");
				$pjPaypalModel->orWhere('t1.mc_gross LIKE', "%$q%");
				$pjPaypalModel->orWhere('t1.mc_currency LIKE', "%$q%");
				$pjPaypalModel->orWhere('t1.payer_email LIKE', "%$q%");
				$pjPaypalModel->orWhere('t1.dt LIKE', "%$q%");
			}
				
			$column = 'dt';
			$direction = 'DESC';
			if (class_exists('pjInput'))
            {
                if (in_array(strtoupper($this->_get->toString('direction')), array('ASC', 'DESC')))
                {
                    $column = $this->_get->toString('column');
                    $direction = strtoupper($this->_get->toString('direction'));
                }
            }
            elseif (isset($_GET['direction']) && isset($_GET['column']) && in_array(strtoupper($_GET['direction']), array('ASC', 'DESC')))
            {
                $column = $_GET['column'];
                $direction = strtoupper($_GET['direction']);
            }

			$total = $pjPaypalModel->findCount()->getData();
			if (class_exists('pjInput'))
            {
                $rowCount = $this->_get->toInt('rowCount') ?: 10;
    			$page = $this->_get->toInt('page') ?: 1;
            }
            else
            {
                $rowCount = isset($_GET['rowCount']) && (int) $_GET['rowCount'] > 0 ? (int) $_GET['rowCount'] : 10;
                $page = isset($_GET['page']) && (int) $_GET['page'] > 0 ? intval($_GET['page']) : 1;
            }
			$pages = ceil($total / $rowCount);
			$offset = ((int) $page - 1) * $rowCount;
			if ($page > $pages)
			{
				$page = $pages;
			}

			$data = $pjPaypalModel->select('t1.*')
				->orderBy("`$column` $direction")->limit($rowCount, $offset)->findAll()->getData();
						
			pjAppController::jsonResponse(compact('data', 'total', 'pages', 'page', 'rowCount', 'column', 'direction'));
		}
		exit;
	}
	
	public function pjActionIndex()
	{
	    if (!$this->isAdmin())
        {
            $this->sendForbidden();
            return;
        }

        $this->appendJs('pjPaypal.js', $this->getConst('PLUGIN_JS_PATH'));
        if (pjObject::getPlugin('pjCms') !== null)
        {
            $this->appendJs('jquery.datagrid.js', $this->getConstant('pjCms', 'PLUGIN_JS_PATH'), false, false);
            $this->appendJs('index.php?controller=pjCms&action=pjActionMessages', PJ_INSTALL_URL, true);
        }
        else
        {
            $this->appendJs('jquery.datagrid.js', PJ_FRAMEWORK_LIBS_PATH . 'pj/js/');
            $this->appendJs('index.php?controller=pjAdmin&action=pjActionMessages', PJ_INSTALL_URL, true);
        }
	}
}
?>