<?php

/**
 *  @file
 *  Views Slideshow: ddblock adds ddblock functionality to Views Slideshows.
 *
 */

/**
 *  Implements hook_init().
 */
function views_slideshow_ddblock_init() {
  // add views_slideshow_ddblock.admin. js file
  drupal_add_js(drupal_get_path('module', 'views_slideshow_ddblock') . '/js/views_slideshow_ddblock.admin.js');
}

/**
 * Implement hook_menu().
 */
function views_slideshow_ddblock_menu() {
  $items = array();

  $items['views_slideshow_ddblock_mapping/js/%'] = array(
    'page callback' => 'views_slideshow_ddblock_mapping_js',
    'page arguments' => array(2),
    'access arguments' => array('access content'),
    'type ' => MENU_CALLBACK,
  );

  // Ahah update available template sizes of themes.
  // This block defines the path to which the AHAH call points.
  // The path relays the call to a specific AHAH callback function.
  $items['views_slideshow_ddblock/js'] = array(
    'page callback' => 'views_slideshow_ddblock_select_template_ahah', // the AHAH callback function
    'access callback' => TRUE,
    'file' => 'views_slideshow_ddblock.views_slideshow.inc',
    'type' => MENU_CALLBACK,
  );

  return $items;
}

/**
 *  Implements hook_theme().
 */
function views_slideshow_ddblock_theme($existing, $type, $theme, $path) {
  return array(
    'views_slideshow_ddblock' => array(
      'arguments' => array('view' => NULL,
                           'options' => array(),
                           'rows' => array(),
                           'title' => ''
      ),
      'template' => 'views-slideshow-ddblock',
    ),
    'views_slideshow_ddblock_pager_content' => array(
      'arguments' => array(
        'views_slideshow_ddblock_pager_settings' => NULL,
        'views_slideshow_ddblock_content' => NULL,
      ),
      'template' => 'views-slideshow-ddblock-pager-content',
    ),
    'views_slideshow_ddblock_mappings_table' => array(
      'arguments' => array('form'),
    ),
  );
}

/**
 * Show debug information for content preprocess function helper function
 *
 * @param $vars             - An array of variables to pass to the theme template.
 */
function views_slideshow_ddblock_show_content_debug_info($vars) {
  $settings = $vars['views_slideshow_ddblock_slider_settings'];
  switch ($settings['debug_info']) {
    case 'devel':
      dpm($settings['view_name'], t('View - name'));
      dpm($settings['view_display_id'], t('View - display_id'));
      dpm(count($vars['views_slideshow_ddblock_content']), t('Number of slides'));
      foreach ($vars['views_slideshow_ddblock_content'][0] as $key => $value ) {
        $content_result[$key]=$value;
      }
      drupal_set_message('<pre>' . t('Content first slide') . '</pre>');
      dvm($content_result, t('Content first slide'));
      break;
    case 'drupal':
      drupal_set_message('<pre>' . t('View - name => @view_name', array('@view_name' => var_export($settings['view_name'], TRUE))) . '</pre>');
      drupal_set_message('<pre>' . t('View - display_Id => @view_display_id', array('@view_display_id' => var_export($settings['view_display_id'], TRUE))) . '</pre>');
      drupal_set_message('<pre>' . t('Number of slides => @nr_of_slides', array('@nr_of_slides' => count($vars['views_slideshow_ddblock_content']))) .'</pre>');
      $content_result = array();
      foreach ($vars['views_slideshow_ddblock_content'][0] as $key => $value ) {
        $content_result[$key]=$value;
      }
      drupal_set_message('<pre>' . t('Content first slide => @content_result', array('@content_result' => var_export($content_result, TRUE))) . '</pre>');
      break;
    case 'none':
      break;
  }
}

/**
 * Show debug information for pager preprocess function helper function
 *
 * @param $vars             - An array of variables to pass to the theme template.
 */
function views_slideshow_ddblock_show_pager_debug_info($vars) {
  $settings = $vars['views_slideshow_ddblock_pager_settings'];
  switch ($settings['debug_info']) {
    case 'devel':
      dpm(count($vars['views_slideshow_ddblock_content']), t('Number of pager items'));
      drupal_set_message('<pre>' . t('Pager Settings:') . '</pre>');
      dpm($vars['views_slideshow_ddblock_pager_settings'], t('Pager Settings'));
      break;
    case 'drupal':
      drupal_set_message('<pre>' . t('Pager Settings => @pager_settings', array('@pager_settings' => var_export($settings, TRUE))) . '</pre>');
      drupal_set_message('<pre>' . t('Number of pager items  => @nr_of_pager_items', array('@nr_of_pager_items' => count($vars['views_slideshow_ddblock_content']))) . '</pre>');
      break;
    case 'none':
      break;
  }
}

/**
 *  content preprocess function.
 */
function template_preprocess_views_slideshow_ddblock(&$vars) {
  // simplify variable names
  $options = $vars['options']['views_slideshow_ddblock'];

  // DDblock template used
  if ($options['template'] <> 'none') {
    $view = $vars['view'];

    // get view result
    $rows = $view->result;
    $field_rows = $view->field;

    // Remove empty mappings
    foreach ($options['mapping_wrapper']['mappings'] as $key => $value) {
      if (empty($value['target'])) {
        unset($mappings[$key]);
      }
    }

    // create result array
    foreach ($view->result as $row_num => $result) {
      foreach ($view->field as $id => $field) {
        $field_output = $view->style_plugin->get_field($row_num, $id);
        foreach ($options['mapping_wrapper']['mappings'] as $mapping_key => $mapping_value) {
          if ($mapping_value['source'] == $id) {
            $mapping_target=$mapping_value['target'];
            $result_rows[$row_num][$mapping_target] = $field_output;
          }
        }
      }
    }

    // sort the result_rows using ddblock, none for using order of view
    if (!empty($result_rows)) {
      switch ($options['settings']['order']) {
        case 'random':
          shuffle($result_rows);
          break;
        case 'asc' :
          asort($result_rows);
          break;
        case 'desc':
          rsort($result_rows);
          break;
        case 'none':
          break;
      }

      $nr_of_items = count($result_rows);
      // set jquery cycle settings
      $settings['viewsSlideshowDdblockContent'][$view->name . '_' . $view->current_display] = array(
      'block'                      => $view->name . '_' . $view->current_display,
      'nrOfItems'                  => $nr_of_items,
      'setDimensions'              => $options['template'],
      'contentContainer'           => $options['content_container']['container'],
      'custom'                     => $options['settings']['custom']['custom_jquery'],
      'fx'                         => $options['settings']['fx'],
      'speed'                      => (int) $options['settings']['speed'],
      'timeOut'                    => (int) $options['settings']['timeout'],
      'pause'                      => (int) $options['settings']['pause'],
      'next'                       => (int) $options['settings']['next'],
      'overflow'                   => $options['settings']['overflow'],
      'pager'                      => $options['settings']['pager_settings']['pager'],
      'pager_toggle'               => $options['settings']['pager_toggle'],
      'pagerPosition'              => $options['settings']['pager_settings']['pager_position'],
      'nrOfPagerItems'             => (int) $options['settings']['pager_settings']['nr_of_pager_items'],
      'pagerSpeed'                 => (int) $options['settings']['pager_settings']['pager_speed'],
      'pagerContainer'             => $options['settings']['pager_settings']['pager_container'],
      'pagerEvent'                 => $options['settings']['pager_settings']['pager_event'],
      'pagerDisableClick'          => (int) $options['settings']['pager_settings']['pager_disable_click'],
      'pagerFast'                  => (int) $options['settings']['pager_settings']['pager_fast'],
      'pagerPause'                 => (int) $options['settings']['pager_settings']['pager_pause'],
      'pager2'                     => (int) $options['settings']['pager2'],
      'pager2Event'                => $options['settings']['pager2_settings']['pager2_event'],
      'pager2PagerHide'            => $options['settings']['pager2_settings']['pager2_pager']['pager2_pager_hide'],
      'pager2SlideHide'            => $options['settings']['pager2_settings']['pager2_slide']['pager2_slide_hide'],
      'slideText'                  => (int) $options['settings']['slide_text'],
      'slideTextjQuery'            => $options['settings']['slide_text_settings']['slide_text_jquery'],
      'slideTextPosition'          => $options['settings']['slide_text_settings']['slide_text_position'],
      'slideTextContainer'         => $options['settings']['slide_text_settings']['slide_text_container'],
      'slideTextEffectBefore'      => $options['settings']['slide_text_settings']['slide_jquery']['slide_text_before_effect'],
      'slideTextEffectBeforeSpeed' => (int) $options['settings']['slide_text_settings']['slide_jquery']['slide_text_before_speed'],
      'slideTextEffectAfter'       => $options['settings']['slide_text_settings']['slide_jquery']['slide_text_after_effect'],
      'slideTextEffectAfterSpeed'  => (int) $options['settings']['slide_text_settings']['slide_jquery']['slide_text_after_speed'],
      );

      // set template variables
      $vars['views_slideshow_ddblock_slider_settings']['delta']               = $view->name . '_' . $view->current_display;//$vars['id'];
      $vars['views_slideshow_ddblock_slider_settings']['debug_info']          = $options['debug_info'];
      $vars['views_slideshow_ddblock_slider_settings']['output_type']         = 'view_fields';
      $vars['views_slideshow_ddblock_slider_settings']['pager']               = $options['settings']['pager_settings']['pager'];
      $vars['views_slideshow_ddblock_slider_settings']['pager_toggle']        = $options['settings']['pager_toggle'];
      $vars['views_slideshow_ddblock_slider_settings']['pager_position']      = $options['settings']['pager_settings']['pager_position'];
      $vars['views_slideshow_ddblock_slider_settings']['pager2']              = $options['settings']['pager2'];
      $vars['views_slideshow_ddblock_slider_settings']['pager2_position']     = $options['settings']['pager2_settings']['pager2_position'];
      $vars['views_slideshow_ddblock_slider_settings']['pager2_pager_prev']   = $options['settings']['pager2_settings']['pager2_pager']['pager2_pager_prev'];
      $vars['views_slideshow_ddblock_slider_settings']['pager2_pager_next']   = $options['settings']['pager2_settings']['pager2_pager']['pager2_pager_next'];
      $vars['views_slideshow_ddblock_slider_settings']['pager2_slide_prev']   = $options['settings']['pager2_settings']['pager2_slide']['pager2_slide_prev'];
      $vars['views_slideshow_ddblock_slider_settings']['pager2_slide_next']   = $options['settings']['pager2_settings']['pager2_slide']['pager2_slide_next'];
      $vars['views_slideshow_ddblock_slider_settings']['slide_text']          = $options['settings']['slide_text'];
      $vars['views_slideshow_ddblock_slider_settings']['slide_text_position'] = $options['settings']['slide_text_settings']['slide_text_position'];
      $vars['views_slideshow_ddblock_slider_settings']['view_name']           = $view->name;
      $vars['views_slideshow_ddblock_slider_settings']['view_display_id']     = $view->current_display;


      if ($vars['views_slideshow_ddblock_slider_settings']['slide_text_position'] == "top" ||
          $vars['views_slideshow_ddblock_slider_settings']['slide_text_position'] == "bottom") {
        $vars['views_slideshow_ddblock_slider_settings']['slide_direction'] = "horizontal";
      }
      else {
        $vars['views_slideshow_ddblock_slider_settings']['slide_direction'] = "vertical";
      }
      $vars['views_slideshow_ddblock_slider_settings']['template'] = $options['template'];
      $vars['views_slideshow_ddblock_slider_settings']['template_size'] = $options['template_size_wrapper']['template_size'];

      $vars['views_slideshow_ddblock_content'] = $result_rows;

      // Add the required JS and CSS.
      // get module path to views_slideshow_ddblock module.
      $path = drupal_get_path('module', 'views_slideshow_ddblock');

      //add jcycle plugin
      drupal_add_js($path .'/js/jquery.cycle.all.min.js', 'module');

      //add easing plugin
      $file_path = $path .'/js/jquery.easing.1.1.1.js';
      $checked_file_path = file_exists($file_path);

      if ($checked_file_path) {
        drupal_add_js($path .'/js/jquery.easing.1.1.1.js', 'module');
      }

      // add ddblock js file
      drupal_add_js($path .'/js/json2.pack.js', 'module');

      // add ddblock js file
      drupal_add_js($path .'/js/views_slideshow_ddblock.js', 'module');

      // add Cascading style sheet
      //drupal_add_css($path .'/views_slideshow_ddblock.css', 'module', 'all', TRUE);

      drupal_add_js($settings, 'setting');

      // additional candidate template files
      if ($options['template'] == 'custom') {
        $vars['template_files'][] = 'views-slideshow-ddblock-cycle-block-content-'. $options['custom_template'];
        $vars['views_slideshow_ddblock_slider_settings']['template'] = $options['custom_template'];
      }
      else {
        $vars['template_files'][] = 'views-slideshow-ddblock-cycle-block-content-'. $options['template'];
      }
      $vars['template_files'][] = 'views-slideshow-ddblock-cycle-block-content-'. $view->name . '_' . $view->current_display;

      // pager content settings
      $pager_settings['delta']               = $view->name . '_' . $view->current_display;
      $pager_settings['debug_info']          = $options['debug_info'];
      $pager_settings['output_type']         = 'view_fields';
      $pager_settings['pager']               = $options['settings']['pager_settings']['pager'];
      $pager_settings['pager_container']     = $options['settings']['pager_settings']['pager_container'];
      $pager_settings['pager_event']         = $options['settings']['pager_settings']['pager_event'];
      $pager_settings['pager_position']      = $options['settings']['pager_settings']['pager_position'];
      $pager_settings['pager2']              = $options['settings']['pager2'];
      $pager_settings['pager2_position']     = $options['settings']['pager2_settings']['pager2_position'];
      $pager_settings['pager2_pager_prev']   = $options['settings']['pager2_settings']['pager2_pager']['pager2_pager_prev'];
      $pager_settings['pager2_pager_next']   = $options['settings']['pager2_settings']['pager2_pager']['pager2_pager_next'];
      $pager_settings['pager2_slide_prev']   = $options['settings']['pager2_settings']['pager2_slide']['pager2_slide_prev'];
      $pager_settings['pager2_slide_next']   = $options['settings']['pager2_settings']['pager2_slide']['pager2_slide_next'];

      if ($options['template'] == 'custom') {
        $pager_settings['template']          = $options['custom_template'];
      }
      else {
        $pager_settings['template']          = $options['template'];
      }
      $pager_settings['view_name']           = $view->name;
      $pager_settings['view_display_id']     = $view->current_display;
      $pager_settings['nr_of_items']         = $nr_of_items;

      $vars['views_slideshow_ddblock_pager_content'] = theme(
        'views_slideshow_ddblock_pager_content',
        $pager_settings,
        $vars['views_slideshow_ddblock_content']
      );

      views_slideshow_ddblock_show_content_debug_info($vars);
      $vars['views_slideshow_ddblock_slider_items'] = $vars['views_slideshow_ddblock_content'];

      // set pager variable for javascript
      $settings = array();
      $settings['ddblockCustomTemplate'] = array(
        'pager' => $pager_settings['pager'],
        'pagerContainer' => $pager_settings['pager_container'],
        'pagerPosition' => $pager_settings['pager_position'],
      );

      drupal_add_js($settings, 'setting');

    }
  }
}
/**
 *  Pager-items preprocess function.
 */
function template_preprocess_views_slideshow_ddblock_pager_content(&$vars) {
  if (!empty($vars['views_slideshow_ddblock_content'])) {

    //simplify variable
    $settings = $vars['views_slideshow_ddblock_pager_settings'];

    // additional candidate template files
    if ($settings['template'] == 'custom') {
      $vars['template_files'][] = 'views-slideshow-ddblock-cycle-pager-content-'. $settings['custom_template'];
      $vars['template_files'][] = 'views-slideshow-ddblock-cycle-pager-content-'. $settings['delta'];
    }
    else {
      $vars['template_files'][] = 'views-slideshow-ddblock-cycle-pager-content-'. $settings['template'];
      $vars['template_files'][] = 'views-slideshow-ddblock-cycle-pager-content-'. $settings['delta'];
    }

    // for showing debug info
    views_slideshow_ddblock_show_pager_debug_info($vars);
    $vars['views_slideshow_ddblock_pager_items'] = $vars['views_slideshow_ddblock_content'];
  }
}

function theme_views_slideshow_ddblock_mappings_table($form) {
  $rows = array();
  $headers = array(
    t('Target'),
    t('Source'),
  );

  foreach (element_children($form) as $key) {
    // No need to print the field title every time.
    unset(
      $form[$key]['target']['#title'],
      $form[$key]['source']['#title']
    );

    // Build the table row.
    $row = array(
      'data' => array(
        array('data' => drupal_render($form[$key]['target']) . drupal_render($form[$key]['target']), 'class' => 'target'),
        array('data' => drupal_render($form[$key]['source']) . drupal_render($form[$key]['source']), 'class' => 'source'),
      ),
    );

    // Add additional attributes to the row, such as a class for this row.
    if (isset($form[$key]['#attributes'])) {
      $row = array_merge($row, $form[$key]['#attributes']);
    }
    $rows[] = $row;
  }

  $output = theme('table', $headers, $rows);
  $output .= drupal_render($form);
  return $output;
}

/**
 * Helper function to define populated form field elements for album track node form.
 */
function views_slideshow_ddblock_mapping_display_form($delta, $target, $source, $source_fields) {

  $form = array(
    '#tree' => TRUE,
  );

  $form['target'] = array(
    '#type' => 'textfield',
    '#title' => t('Target'),
    '#weight' => 1,
    '#size' => 20,
    '#parents' => array('style_options', 'views_slideshow_ddblock', 'mapping_wrapper', 'mappings', $delta, 'target'),
    '#default_value' => $target,
  );

  $form['source'] = array(
    '#type' => 'select',
    '#title' => t('Source'),
    '#weight' => 2,
    '#parents' => array('style_options', 'views_slideshow_ddblock', 'mapping_wrapper', 'mappings', $delta, 'source'),
    '#default_value' => $source,
    '#size' => 1,
    '#options' => $source_fields,
  );

  return $form;
}