// !Class constructor -> initialize class variables.

// Sets the class code, description, and status.

    function TatraPay() {

      $this->code = 'TatraPay';

      $this->title = MODULE_PAYMENT_TATRAPAY_TEXT_TITLE;

      $this->description = MODULE_PAYMENT_TATRAPAY_TEXT_DESCRIPTION;

      $this->email_footer = MODULE_PAYMENT_TATRAPAY_TEXT_EMAIL_FOOTER;

      $this->CU = MODULE_PAYMENT_TATRAPAY_CU;

      $this->sort_order = MODULE_PAYMENT_TATRAPAY_SORT_ORDER;

      $this->enabled = MODULE_PAYMENT_TATRAPAY_STATUS;

    }



////

// Create signature

    function make_sign( $value, $key) {



        //get the SHA1

        $hash = substr(mhash (MHASH_SHA1, $value), 0, 8);

        //encrypt hash with key

        if (function_exists('mcrypt_module_open')) {         // We have mcrypt 2.4.x

        $td = mcrypt_module_open(MCRYPT_TripleDES, "", MCRYPT_MODE_ECB, "");

        $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size ($td), MCRYPT_RAND);

        mcrypt_generic_init($td, $key, $iv);

        $signature = strtoupper(bin2hex(mcrypt_generic ($td, $hash)));

        mcrypt_generic_end ($td);

        } //else {                        // We have 2.2.x only

       // $signature = strtoupper(bin2hex(mcrypt_ecb (MCRYPT_3DES, $key, $hash, MCRYPT_ENCRYPT)));

       // }



        return $signature;

    }



////

// Calculate send sign



    function send_sign ($AMT, $variab) {

        global $HTTP_POST_VARS;

        $RURL = zen_href_link(FILENAME_CHECKOUT_PROCESS,"", 'NONSSL');

        return $this->make_sign (MODULE_PAYMENT_TATRAPAY_MID.$AMT.$variab.

                                 MODULE_PAYMENT_TATRAPAY_CS.

                                 MODULE_PAYMENT_TATRAPAY_CU.$RURL,

                                 MODULE_PAYMENT_TATRAPAY_MIK);

    }



////

// !Javascript form validation

// Check the user input submited on checkout_payment.php with javascript (client-side).

// Examples: validate credit card number, make sure required fields are filled in

    function javascript_validation() {

// insert code here

    }



////

// !Form fields for user input

// Output any required information in form fields

// Examples: ask for extra fields (credit card number), display extra information

    function selection() {

      return array('id' => $this->code,

                   'module' => $this->title);



    }



////

// Pre confirmation checks (ie, check if credit card information is right before sending the info to

// the payment server

    function pre_confirmation_check() {

      return false;

    }





////

// !Functions to execute before displaying the checkout confirmation page

// Note: Set the variable $checkout_form_action to set the form action value

// Examples: validate (server-side with PHP) extra fields, redirect to online payment services (eg, PayPal)

    function confirmation() {

          global $checkout_form_action;

//// For live

     $this->form_action_url = 'https://moja.tatrabanka.sk/cgi-bin/e-commerce/start/example.jsp';

//// For test with Tatrabanka

#      $this->form_action_url = 'https://tatrasun2/cgi-bin/e-commerce/start/e-commerce.jsp';

//// For test at localhost

      // $this->form_action_url = 'http://www.biosen.sk/tatratest.php';

    }



////

// !Functions to execute before finishing the form

// Examples: add extra hidden fields to the form

    function process_button() {

// insert code here

      global $HTTP_POST_VARS, $order, $comments;



      $AMT = str_replace(",","",number_format($order->info['total'], 2));

      $variab = mysql_num_rows(mysql_query("select orders_id from " . TABLE_ORDERS))+1;

      $variab .= date ("dmy");

      $sign = $this->send_sign($AMT, $variab);

      if ($comments != '') $this->DESC = zen_draw_hidden_field('DESC', $comments);

      if (MODULE_PAYMENT_TATRAPAY_RSMS != '') $this->RSMS = zen_draw_hidden_field('RSMS', MODULE_PAYMENT_TATRAPAY_RSMS);

      if (MODULE_PAYMENT_TATRAPAY_REM != '') $this->REM = zen_draw_hidden_field('REM', MODULE_PAYMENT_TATRAPAY_REM);



      $process_button_string = zen_draw_hidden_field('PT', "TatraPay") .

                               zen_draw_hidden_field('MID', MODULE_PAYMENT_TATRAPAY_MID) .

                               zen_draw_hidden_field('AMT', $AMT) .

                               zen_draw_hidden_field('VS', $variab) .

                               zen_draw_hidden_field('CU', MODULE_PAYMENT_TATRAPAY_CU) .

                               zen_draw_hidden_field('CS', MODULE_PAYMENT_TATRAPAY_CS) .

                               zen_draw_hidden_field('RURL', zen_href_link(FILENAME_CHECKOUT_PROCESS, '', 'NONSSL')).

                               $this->DESC .

                               $this->RSMS .

                               $this->REM  .

                               zen_draw_hidden_field('SIGN', $sign);

      return $process_button_string;

    }





////

// !Functions to execute before processing the order

// Examples: retreive result from online payment services

    function before_process() {

      global $VS, $RES, $SIGN;

      $csign = $this->make_sign ($VS.$RES, MODULE_PAYMENT_TATRAPAY_MIK);

      if((($RES != 'OK') and ($RES != 'TOUT')) or strcasecmp($csign, $SIGN) != '0'){

              zen_redirect(zen_href_link(FILENAME_CHECKOUT_PAYMENT, 'error_message=' . urlencode(MODULE_PAYMENT_TATRAPAY_TEXT_ERROR_MESSAGE), 'NONSSL', true, false));

      }

      return false;

    }





////

// !Functions to execute after processing the order

// Examples: email part of the credit card number

    function after_process() {

// insert code here

      return false;

    }



////

// !If an error occurs with the process, output error messages here

    function output_error() {

      return false;

    }







////

// !Check if module is installed (Administration Tool)_

// TABLES: configuration

    function check() {

    global $db;

      if (!isset($this->check)) {

        $check_query = $db->Execute("select configuration_value from " . TABLE_CONFIGURATION . " where configuration_key = 'MODULE_PAYMENT_TATRAPAY_STATUS'");

        $this->check = $check_query->RecordCount();

      }

      return $this->check;

    }





////

// !Install the module (Administration Tool)_

// TABLES: configuration

    function install() {

    global $db;

      $db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('Allow TatraPay Payments', 'MODULE_PAYMENT_TATRAPAY_STATUS', '1', 'Do you want to accept TatraPay payments?', '8', '8', now())");

      $db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('MID', 'MODULE_PAYMENT_TATRAPAY_MID', '001', 'ID obchodníka.', '8', '3', now())");

      $db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('MIK', 'MODULE_PAYMENT_TATRAPAY_MIK', 'teszen01', 'Kľúč obchodníka.', '8', '2', now())");

      $db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('CS', 'MODULE_PAYMENT_TATRAPAY_CS', '308', 'Konštantný Symbol.', '8', '2', now())");

      $db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('CU', 'MODULE_PAYMENT_TATRAPAY_CU', '978', 'Mena nákupu.', '8', '2', now())");

      $db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('RSMS', 'MODULE_PAYMENT_TATRAPAY_RSMS', '', 'Reply SMS.', '8', '2', now())");

      $db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('REM', 'MODULE_PAYMENT_TATRAPAY_REM', '', 'Reply Email.', '8', '2', now())");

      $db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('Poradie zobrazenia modulu', 'MODULE_PAYMENT_TATRAPAY_SORT_ORDER', '0', 'Poradie pri zobrazení. S najnižšou hodnotou je zobrazené na prvej pozícii.', '8', '0', now())");

    }



////

// !Remove the module (Administration Tool)_

// TABLES: configuration

    function remove() {

    global $db;

      $db->Execute("delete from " . TABLE_CONFIGURATION . " where configuration_key = 'MODULE_PAYMENT_TATRAPAY_STATUS'");

      $db->Execute("delete from " . TABLE_CONFIGURATION . " where configuration_key = 'MODULE_PAYMENT_TATRAPAY_MID'");

      $db->Execute("delete from " . TABLE_CONFIGURATION . " where configuration_key = 'MODULE_PAYMENT_TATRAPAY_MIK'");

      $db->Execute("delete from " . TABLE_CONFIGURATION . " where configuration_key = 'MODULE_PAYMENT_TATRAPAY_CS'");

      $db->Execute("delete from " . TABLE_CONFIGURATION . " where configuration_key = 'MODULE_PAYMENT_TATRAPAY_CU'");

      $db->Execute("delete from " . TABLE_CONFIGURATION . " where configuration_key = 'MODULE_PAYMENT_TATRAPAY_RSMS'");

      $db->Execute("delete from " . TABLE_CONFIGURATION . " where configuration_key = 'MODULE_PAYMENT_TATRAPAY_REM'");

      $db->Execute("delete from " . TABLE_CONFIGURATION . " where configuration_key = 'MODULE_PAYMENT_TATRAPAY_SORT_ORDER'");

    }



////

// !Retreive the modules configuration keys (Administration Tool)_

// Check the user input submited on checkout_payment.php with javascript (client-side).

    function keys() {

      $keys = array('MODULE_PAYMENT_TATRAPAY_MID', 'MODULE_PAYMENT_TATRAPAY_MIK', 'MODULE_PAYMENT_TATRAPAY_CU', 'MODULE_PAYMENT_TATRAPAY_CS', 'MODULE_PAYMENT_TATRAPAY_RSMS', 'MODULE_PAYMENT_TATRAPAY_REM', 'MODULE_PAYMENT_TATRAPAY_SORT_ORDER');



      return $keys;

    }

  }

?>