<?php
/**
 * @file
 *  The implementation of Views Nivo Slider module.
 */

/**
 * Implementation of hook_views_api().
 */
function views_nivo_slider_views_api() {
  return array('api' => '3.0-alpha1');
}

/**
 * Implementation of template preprocess for the view
 */
function template_preprocess_views_nivo_slider_view(&$vars) {
  $view    = $vars['view'];
  $options = $vars['options'];

  $vars['views_nivo_slider_id'] = 'views-nivo-slider-'. $view->name .'-'. $view->current_display;

  // Prevent problems on update versions of this module
  if (is_string($options['effect'])) {
    $options['effect'] = array($options['effect'] => $options['effect']);
  }

  $cfg = array();
  $params = array(
    'startSlide'       => 0,
    'effect'           => join(',', array_keys($options['effect'])),
    'slices'           => (int) $options['slices'],
    'animSpeed'        => (int) $options['animSpeed'],
    'pauseTime'        => (int) $options['pauseTime'],
    'directionNav'     => $options['directionNav'] == 'true' ? TRUE : FALSE,
    'directionNavHide' => $options['directionNavHide'] == 'true' ? TRUE : FALSE,
    'controlNav'       => $options['controlNav'] != 'disabled' ? TRUE : FALSE,
    'controlNavThumbs' => FALSE,
    'controlNavThumbsFromRel' => FALSE,
    //'controlNavThumbsSearch'  => '',
    //'controlNavThumbsReplace' => '',
    'keyboardNav'      => $options['keyboardNav'] == 'true' ? TRUE : FALSE,
    'pauseOnHover'     => $options['pauseOnHover'] == 'true' ? TRUE : FALSE,
    'manualAdvance'    => $options['manualAdvance'] == 'true' ? TRUE : FALSE,
    'captionOpacity'   => (float) $options['captionOpacity'],
  );

  if ($options['controlNav'] == 'thumbsIC') {
    $params['controlNavThumbs'] = TRUE;
    $params['controlNavThumbsFromRel'] = TRUE;
    //$params['controlNavThumbsSearch'] = "/{$options['imagefield_preset']}/";
    //$params['controlNavThumbsReplace'] = "/{$options['controlNavThumbsIC']}/";
  }
  elseif ($options['controlNav'] == 'thumbsField') {
    $params['controlNavThumbs'] = TRUE;
    $params['controlNavThumbsFromRel'] = TRUE;
  }

  $cfg[$vars['views_nivo_slider_id']] = $params;

  drupal_add_js(array('views_nivo_slider' => $cfg), 'setting');

  $_path = drupal_get_path('module', 'views_nivo_slider');
  drupal_add_js($_path .'/js/jquery.nivo.slider.pack.js');
  drupal_add_js($_path .'/views_nivo_slider.js');
  drupal_add_css($_path .'/js/nivo-slider.css');
  drupal_add_css($_path .'/views_nivo_slider.css');

  // Style
  if ($options['style'] != 'none') {
    drupal_add_css($_path . '/styles/' . $options['style'] .'/custom-nivo-slider.css');
  }
}

/**
 * Implementation of template preprocess for the view fields
 */
function template_preprocess_views_nivo_slider_view_nivo_sliderfields(&$vars) {
  $view = &$vars['view'];
  $options = $vars['options'];
  $style = $view->style_options;
  $row = $vars['row'];

  $presetname = $style['imagefield_preset'];
  $thumbnail_url = $title = $link = NULL;

  // Force URL format for image_field
  if (isset($view->field[$options['image_field']])) {
    $view->field[$options['image_field']]->options['settings']['image_style'] = $presetname;
    //$view->field[$options['image_field']]->options['type'] = 'path_plain';
    $view->field[$options['image_field']]->options['alter']['make_link'] = 0;
  }

  if ($style['controlNav'] == 'thumbsField') {
    $view->field[$style['controlNavThumbsField']]->options['settings']['image_style'] = $style['controlNavThumbsICField'];
    //$view->field[$style['controlNavThumbsField']]->options['format'] = 'path_plain';
    $view->field[$style['controlNavThumbsField']]->options['alter']['make_link'] = 0;
  }

  // link
  if (isset($view->field[$options['link_field']])) {
    //Node: Link
    if ($view->field[$options['link_field']]->definition['handler'] == 'views_handler_field_node_link') {
      $link = url('node/'.$view->result[$view->row_index]->nid);
    }
    // Link Field
    else {
      $view->field[$options['link_field']]->options['format'] = 'plain';
    }
  }
  
  $attributes = NULL;
  $view->_vns_captions = array();
  $title_id = '';

  foreach ($view->field as $id => $field) {
    $field_output = $view->field[$id]->theme($vars['row']);

    switch ($id) {
    case $options['image_field']:
      //$image_url = $field_output;
      $field_image_name = "field_data_{$options['image_field']}_node_values";
      $image_url = $field_output = $row->{$field_image_name}[0]['uri'];
      break;

    case $options['title_field']:
      $title = $field_output;
      $title_id = $title ? drupal_clean_css_identifier($id."-".$field->view->row_index) : '';

      if ($title) {
        $view->_vns_captions[$title_id] = $title;
        $title_id = '#'.$title_id;
      }
      break;

    case $options['link_field']:
      if ($field->definition['handler'] != 'views_handler_field_node_link') {
        $link = check_url($field_output);
      }
      break;

    case $style['controlNavThumbsField']:
      if ($style['controlNav'] == 'thumbsField') {
        $field_image_name = "field_data_{$style['controlNavThumbsField']}_node_values";
        $field_output = $row->{$field_image_name}[0]['uri'];
      
        if (!empty($style['controlNavThumbsICField'])) {
          $turl = image_style_url($style['controlNavThumbsICField'], $field_output);
        }
        else {
          $turl = $field_output;
        }

        $attributes = array('rel' => $turl);
      }
      break;
    }
  }
  
  if ($style['controlNav'] == 'thumbsIC') {
    $turl = image_style_url($style['controlNavThumbsIC'], $image_url);
    $attributes = array('rel' => $turl);
  }

  $params = array(
    'style_name' => $presetname,
    'path' => $image_url,
    'title' => $title_id,
    'attributes' => $attributes,
  );

  $img = theme('image_style', $params);

  if ($link) {
    $img = '<a href="'.$link.'" class="views-processed">'.$img.'</a>';
  }

  $vars['content'] = $img;
}