<?php
// $Id: ad_html.module,v 1.1.2.5.2.8.2.3 2009/02/28 23:35:26 jeremy Exp $

/**
 * @file
 * Enhances the ad module to support html ads.
 *
 * Copyright (c) 2005-2009.
 *   Jeremy Andrews <jeremy@tag1consulting.com>.
 */


/**
 * Function used to display the selected ad.
 */
function ad_html_display_ad($ad) {
  return theme('ad_html_ad', $ad);
}

/**
 * Return a themed ad of type ad_html.
 *
 * @param @ad
 *  The ad object.
 * @return
 *  A string containing the ad markup.
 */
function theme_ad_html_ad($ad) {
  if (isset($ad->aid)) {
    $output  = '<div class="html-advertisement" id="ad-'. $ad->aid .'">';
    if (isset($ad->html) && isset($ad->format)) {
      $output .= check_markup($ad->html, $ad->format, FALSE);
    }
    $output .= '</div>';
    return $output;
  }
}

/**
 * Implementation of hook_theme().
 */
function ad_html_theme() {
  return array(
    'ad_html_ad' => array(
      'file' => 'ad_html.module',
      'arguments' => array(
        'ad' => NULL,
      ),
    ),
  );
}

/**
 * Implementation of hook_help().
 */
function ad_html_help($path, $arg) {
  $output = '';
  switch ($path) {
    case 'node/add/ad#html':
      $output = t('A html advertisement.');
      break;
  }
  return $output;
}

/**
 * Implementation of hook_access().
 */
function ad_html_access($op, $node, $account) {
  return ad_access($op, $node, $account);
}

/**
 * Implementation of the ad module's _adapi hook.
 */
function ad_html_adapi($op, &$node) {
  switch ($op) {
    case 'load':
      $return = db_fetch_array(db_query('SELECT html FROM {ad_html} WHERE aid = %d', $node['aid']));
      $return['ad'] = check_markup($return['html'], $node['format'], FALSE);
      return $return;

    case 'insert':
      db_query("INSERT INTO {ad_html} (aid, html) VALUES(%d, '%s')", $node->nid, $node->html);
      break;

    case 'update':
      db_query("UPDATE {ad_html} SET html = '%s' WHERE aid = %d", $node->html, $node->nid);
      break;

    case 'delete':
      db_query('DELETE FROM {ad_html} WHERE aid = %d', $node->nid);
      break;

    case 'form':
      return ad_html_node_form($node);

    case 'view':
      return ad_html_node_view($node);

    case 'type':
      return array(
        'html' => array(
          'name' => t('HTML ad'),
          'module' => 'ad_html',
          'description' => t('A html advertisement.'),
          'help' => t('A html advertisement.'),
        ),
      );
    case 'permissions':
      if (!isset($node->adtype) || $node->adtype == 'html') {
        return array('manage ad html' => TRUE);
      }
  }
}

/**
 * Adapi helper function for displaying a node form.
 */
function ad_html_node_form(&$node) {
  $form = array();

  $form['ad_html'] = array(
    '#type' => 'fieldset',
    '#title' => t('HTML'),
    '#collapsible' => TRUE,
  );

  $form['ad_html']['display'] = array(
    '#type' => 'markup',
    '#value' => ad_html_display_ad($node),
  );

  if (isset($node->nid) && ad_permission($node->nid, 'manage ad html') || arg(1) == 'add' && user_access('create advertisements')) {
    $form['ad_html']['html'] = array(
      '#type' => 'textarea',
      '#title' => t('Ad HTML'),
      '#required' => TRUE,
      '#default_value' => isset($node->html) ? $node->html : '',
      '#description' => t('Paste the complete HTML provided by your advertising affiliate.'),
    );
  }

  return $form;
}

/**
 * Helper function, display the html ad as a node.
 */
function ad_html_node_view(&$node) {
  $node->content['ad'] = array(
    '#value' => theme('box', '', stripslashes(ad_html_display_ad($node))),
    '#weight' => -1,
  );
}