<?php
/* $Id: nodewords_nodetype.module,v 1.2 2009-06-01 17:24:11 hanoii Exp $ */

function nodewords_nodetype_form_alter($form_id, &$form) {
  if ($form_id == 'node_type_form' && isset($form['#node_type'])) {
    $settings = _nodewords_get_settings();
    $form['nodewords_nodetype'] = array(
        '#type' => 'fieldset',
        '#title' => t('Meta tags node type'),
        '#collapsible' => TRUE,
        '#collapsed' => FALSE,
      );

    $form['nodewords_nodetype']['nodewords_nodetype_keywords'] = array(
      '#type' => 'textfield',
      '#title' => t('Default "keywords" meta tag'),
      '#default_value' => variable_get('nodewords_nodetype_keywords_'. $form['#node_type']->type, ''),
      '#size' => 60,
      '#maxlength' => $settings['max_size'],
      '#description' => t('This keywords will be appended after the global keywords and before the page kewords. Enter a comma separated list of keywords for this page. Avoid duplication of words as this will lower your search engine ranking.'),
    );

    $form['nodewords_nodetype']['description'] = array(
        '#type' => 'fieldset',
        '#title' => t('Description'),
        '#collapsible' => TRUE,
      );

    $form['nodewords_nodetype']['description']['nodewords_nodetype_description'] = array(
      '#type' => 'textarea',
      '#title' => t('Default "description" meta tag'),
      '#default_value' => variable_get('nodewords_nodetype_description_'. $form['#node_type']->type, ''),
      '#description' => t('Enter a global meta tag description for this content type. Limit your description to about 20 words, with a maximum of %count characters. It should not contain any HTML tags or other formatting. ' , array('%count' => $settings['max_size'])) . ($settings['use_teaser'] ? ' ' . t('When you leave this field empty, the teaser will be used as description.') : '') . t('Tokens are allowed, data will be shortened to the max and unallowed tags or caracters will be removed.'),
    );

    $form['nodewords_nodetype']['nodewords_nodetype_token'] = array(
        '#type' => 'fieldset',
        '#title' => t('Token replacements'),
        '#collapsible' => TRUE,
        '#collapsed' => TRUE,
      );
    $form['nodewords_nodetype']['nodewords_nodetype_token']['help'] = array(
        '#type' => 'markup',
        '#value' => theme('token_help'),
      );

    $form['nodewords_nodetype']['description']['advanced'] = array(
        '#type' => 'fieldset',
        '#title' => t('Advanced PHP replacement'),
        '#collapsible' => TRUE,
        '#collapsed' => TRUE,
      );
    $form['nodewords_nodetype']['description']['advanced']['nodewords_nodetype_desc_php'] = array(
        '#type' => 'textarea',
        '#title' => t('PHP replacement'),
        '#default_value' => variable_get('nodewords_nodetype_desc_php_'. $form['#node_type']->type, ''),
        '#description' => t('Code must be included within %php_tags tags. You can add any php code here to perform a particular replacement on the description meta tag information after token substitution. %description and %php_description are available to be used within this code. %title is the actual description meta tags defined above with any token replacement. Be careful if the title has single or double quotes in it. %php_description is replaced with a PHP code that defines a $description variable that you can use along your eval code with the replaced string (quotes are not a problem here). A good starting poing would be: <code>%code</code>.', array('%php_tags' => '<?php ?>', '%code' => '<?php %php_description return $description; ?>')),
      );
  }
}

/**
 * Implementation of hook_nodewords().
 */
function nodewords_nodetype_nodewords(&$tags, $op, $type, $ids) {
  switch ($op) {
    case 'prepare':
      if ( $type == 'node' && (!isset($tags['description']) || empty($tags['description'])) && count($ids) == 1) {
        $meta_description = '';
        $node = node_load($ids[0]);
        // description field
        if ( ( $description = variable_get('nodewords_nodetype_description_'. $node->type, '') ) !== '' ) {
          $meta_description = token_replace($description, 'node', $node);
        }
        // description php field
        if ( ( $description_php = variable_get('nodewords_nodetype_desc_php_'. $node->type, '') ) !== '' ) {
          $description_php = token_replace($description_php, 'node', $node);
          $variables['%description'] = $meta_description;
          $variables['%php_description'] = '$description = \'' . str_replace('\'', '\\\'', $meta_description) . '\';';
          $meta_description = drupal_eval(strtr($description_php, $variables));
        }

        if ( $meta_description != '' ) {
          $tags['description']= _nodewords_check_content(html_entity_decode($meta_description, ENT_COMPAT, 'UTF-8'));
        }

        if ( ( $keywords = variable_get('nodewords_nodetype_keywords_'. $node->type, '') ) !== '' ) {
          $tags['keywords'] = _nodewords_check_content(token_replace($keywords, 'node', $node));
        }
      }

      break;
  }
}