currency_converter.module

<?php
// $Id$ 

/**
  * Implementation of hook_menu()
  */  
  
function currency_converter_menu() {

  $items['admin/config/currency_converter'] = array(
    'title' => 'Currency converter',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('currency_converter_admin_settings', NULL),
    'access arguments' => array('administer content'),
    'type' => MENU_NORMAL_ITEM,
    'file' => 'currency_converter.admin.inc',
  );
  return $items;
}

/**
  * Implementation of hook_block_info()
  */ 
function currency_converter_block_info() {

  $blocks['currency_converter'] = array(
    'info' => t('Currency converter'), 
    'cache' => DRUPAL_CACHE_GLOBAL,
  );
  return $blocks;
}

/**
  * Implementation of hook_block_view()
  */ 
function currency_converter_block_view($delta = '') {

  $block = array();
  $block['subject'] = t('Converter');
  $block['content'] =  drupal_get_form('currency_converter_block_form');  
  return $block;
}

/**
  * Implementation of hook_init()
  */ 

function currency_converter_init() {

  $use_css = variable_get('currency_converter_use_css', 1);
  if ($use_css) {
    drupal_add_css(drupal_get_path('module', 'currency_converter') .'/css/currency_converter.css');      
  }  
  $use_bg = variable_get('currency_converter_use_bg', 1);
  if ($use_bg) {
    drupal_add_css(drupal_get_path('module', 'currency_converter') .'/css/currency_converter_bg.css');
  }  
  drupal_add_js(drupal_get_path('module', 'currency_converter') .'/currency_converter.js');
}
  
/**
  * Implementation of hook_cron()
  */ 
  
function currency_converter_cron() {

  $time = time();

  //Belorussian bank
  $xmlstr = file_get_contents('http://www.priorbank.by/CurratesExportXml.axd?channel=1' );
  
  if ($xmlstr) {
    $xml = new SimpleXMLElement($xmlstr);
  
    foreach ($xml->LIST_R_DATE->R_DATE->LIST_E_CHANNEL->E_CHANNEL->LIST_RATE->RATE as $rate) {
      if ($rate->ISO == 'RUB') {
        $rub = number_format((float)$rate->BUY, 2, '.', '');
      }
      if ($rate->ISO == 'EUR') {
        $eur = number_format((float)$rate->BUY, 2, '.', '');
      }
      if ($rate->ISO == 'USD') {
        $usd = number_format((float)$rate->BUY, 2, '.', '');
      }
      if ($rate->ISO == 'CAD') {
        $cad = number_format((float)$rate->BUY, 2, '.', '');
      }
      if ($rate->ISO == 'PLN') {
        $pln = number_format((float)$rate->BUY, 2, '.', '');
      }
      if ($rate->ISO == 'UAH') {
        $uah = number_format((float)$rate->BUY, 2, '.', '');
      }
      if ($rate->ISO == 'CNY') {
        $cny = number_format((float)$rate->BUY, 2, '.', '');
      }
      if ($rate->ISO == 'LTL') {
        $ltl = number_format((float)$rate->BUY, 2, '.', '');
      }
      if ($rate->ISO == 'LVL') {
        $lvl = number_format((float)$rate->BUY, 2, '.', '');
      }
    }
    
    $check = db_select('currency_converter', 'c')->fields('c')->condition('conv_type', 0, '=')->execute()->fetchAssoc();

    if ($check) {      
      $fields = array('rub' => $rub, 'eur' => $eur, 'usd' => $usd, 'cad' => $cad, 'pln' => $pln, 'uah' => $uah, 'cny' => $cny, 'ltl' => $ltl, 'lvl' => $lvl, 'timestamp' => $time);
      db_update('currency_converter')->condition('conv_type', 0)->fields($fields)->execute();
    }
    else {
      $signature = array(
        'создание сайта', 'продвижение сайта', 'создание сайтов', 'продвижение сайтов', 'создание полезных виджетов в интернете', 
        'seo', 'раскрутка сайтов', 'раскрутка сайта', 'реклама в интернете'
      );
      $signature_selected = $signature[rand(0, 8)];      
      $fields = array('conv_type' => 0, 'byr' => 0, 'rub' => $rub, 'eur' => $eur, 'usd' => $usd, 'cad' => $cad, 'pln' => $pln, 'uah' => $uah, 'cny' => $cny, 'ltl' => $ltl, 'lvl' => $lvl, 'timestamp' => $time, 'signature' => $signature_selected);
      db_insert('currency_converter')->fields($fields)->execute();      
    }  
  }

  //Russian bank 
  $xmlstr=file_get_contents('http://www.cbr.ru/scripts/XML_daily.asp' );

  if ($xmlstr) {
  
    $xml = new SimpleXMLElement($xmlstr);
  
    foreach ($xml->Valute as $rate) {

      if ($rate->CharCode == 'BYR') {
        $byr = number_format(str_replace(',' , '.', $rate->Value ) / $rate->Nominal , 4, '.', '');
      }
      if ($rate->CharCode == 'EUR')  {
        $eur = number_format(str_replace(',' , '.', $rate->Value ) / $rate->Nominal , 4, '.', '');
      }
      if ($rate->CharCode == 'USD') {
        $usd = number_format(str_replace(',' , '.', $rate->Value ) / $rate->Nominal , 4, '.', '');
      }
      if ($rate->CharCode == 'CAD') {
        $cad = number_format(str_replace(',' , '.', $rate->Value ) / $rate->Nominal , 4, '.', '');
      }
      if ($rate->CharCode == 'PLN') {
        $pln = number_format(str_replace(',' , '.', $rate->Value ) / $rate->Nominal , 4, '.', '');
      }
      if ($rate->CharCode == 'UAH') {
        $uah = number_format(str_replace(',' , '.', $rate->Value ) / $rate->Nominal , 4, '.', '');
       }
      if ($rate->CharCode == 'CNY') {
        $cny = number_format(str_replace(',' , '.', $rate->Value ) / $rate->Nominal , 4, '.', '');
      }
      if ($rate->CharCode == 'LTL') {
        $ltl = number_format(str_replace(',' , '.', $rate->Value ) / $rate->Nominal , 4, '.', '');
      }
      if ($rate->CharCode == 'LVL') {
        $lvl = number_format(str_replace(',' , '.', $rate->Value ) / $rate->Nominal , 4, '.', '');
      }
    }
  
    $check = db_select('currency_converter', 'c')->fields('c')->condition('conv_type', 1, '=')->execute()->fetchAssoc();      

    if ($check) {
      $fields = array('byr' => $byr, 'eur' => $eur, 'usd' => $usd, 'cad' => $cad, 'pln' => $pln, 'uah' => $uah, 'cny' => $cny, 'ltl' => $ltl, 'lvl' => $lvl, 'timestamp' => $time);
      db_update('currency_converter')->condition('conv_type', 1)->fields($fields)->execute();      
    }
    else {
      $signature = array(
        'создание сайта', 'продвижение сайта', 'создание сайтов', 'продвижение сайтов', 'создание полезных виджетов в интернете', 
        'seo', 'раскрутка сайтов', 'раскрутка сайта', 'реклама в интернете'
      );
      $signature_selected = $signature[rand(0, 8)];      
      $fields = array('conv_type' => 1, 'byr' => $byr, 'rub' => 0, 'eur' => $eur, 'usd' => $usd, 'cad' => $cad, 'pln' => $pln, 'uah' => $uah, 'cny' => $cny, 'ltl' => $ltl, 'lvl' => $lvl, 'timestamp' => $time, 'signature' => $signature_selected);
      db_insert('currency_converter')->fields($fields)->execute();      
    }
  }  
}

/**
 * Implementation of hook_theme().
 */
function currency_converter_theme($existing, $type, $theme, $path) {

  return array(  
    'currency_converter_block_form' => array(
      'render element' => 'form',
      'template' => 'currency_converter',
    ),
    'currency_converter_admin_settings' => array(
      'render element' => 'form',
    ),  
  );
}

/**
 * Process block form for currency converter
 */
function currency_converter_block_form() {

  $form                     = array();
  $currencies               = array('BYR', 'RUB', 'EUR', 'USD', 'CAD', 'PLN', 'UAH', 'CNY', 'LTL', 'LVL');  
  $default_currency         = variable_get('currency_converter_main_currency', 'BYR');
  $currency_types_enabled   = variable_get('currency_converter_currency_types', array('BYR', 'RUB', 'EUR', 'USD', 'CAD', 'PLN', 'UAH', 'CNY', 'LTL', 'LVL'));
  $currency_weight          = variable_get('currency_converter_weight', array('BYR' => 0, 'RUB' => 0, 'EUR' => 0, 'USD' => 0, 'CAD' => 0, 'PLN' => 0, 'UAH' => 0, 'CNY' => 0, 'LTL' => 0, 'LVL' => 0));
  $bank                     = variable_get('currency_converter_bank_default', 0);
  
  $currencies_values = db_select('currency_converter', 'c')
    ->fields('c')
    ->condition('conv_type', $bank, '=')
    ->execute()
    ->fetchAssoc();

  if ($currencies_values) {
    $default_value = $currencies_values[strtolower($default_currency)] ? $currencies_values[strtolower($default_currency)] : '1';  
    $form[$default_currency] = array(
      '#weight' => -11,
      '#prefix' => '<div class = "'. strtolower($default_currency) .'">',
      '#suffix' => '</div>',
    );  
    $form[$default_currency]['value'] = array(
      '#type' => 'item',
      '#title' => $default_currency,
      '#markup' => '<span></span>',
    );  
    $form[$default_currency]['input'] = array(
      '#type' => 'textfield',
      '#size' => 10,
      '#attributes' => array('class' => array('active')),
    );
    
    foreach ($currency_types_enabled as $currency) {
    
      if ($currency != $default_currency) {        
        $value = $currencies_values[strtolower($currency)] ? $currencies_values[strtolower($currency)] : '1';
        $value = $value / $default_value;
        $value = (int)$value >= 100 ? number_format($value, 2, '.', '') : number_format($value, 4, '.', '');
        $weight = $currency_weight[$currency];   
  
        $form[$currency] = array(
          '#weight' => $weight,
          '#prefix' => '<div class = "'. strtolower($currency) .'">',
          '#suffix' => '</div>',
        );  
        $form[$currency]['value'] = array(
          '#type' => 'item',
          '#title' => $currency,
          '#markup' => '<span>'. $value .'</span>',
        );  
        $form[$currency]['input'] = array(
          '#type' => 'textfield',
          '#size' => 10,
        );		
      }    
    }
  }
  else {
    drupal_set_message(t('Please, run cron to enable the Currency converter module'), 'warning');
  }

  return $form;
}


/**
 * Process variables for currency_converter.tpl.php.
 *
 * The $variables array contains the following arguments:
 * - $form
 *
 * @see currency_converter.tpl.php
 */
function template_preprocess_currency_converter_block_form(&$variables, $hook) {

  $val = db_select('currency_converter', 'c')->fields('c', array('timestamp', 'signature'))->execute()->fetchObject(); 
  if ($val) {
    $bank = variable_get('currency_converter_bank_default', '0');
    if ($bank == '0') {
      $from = t('From NBB'); 
    }
    else {
      $from = t('From RCB');  
    }
    $variables['time'] = $from .' '. date('d.m.Y', $val->timestamp);
    $variables['body'] = drupal_render_children($variables['form']);  
    $variables['developers'] = '<a href = "http://www.internet-marketing.by/" alt = "'. $val->signature .'" class = "dev" ></a>';
  }
  else {
    $variables['time'] = '';
    $variables['body'] = '';
    $variables['developers'] = '';
  }
}