<?php
 
/**
 * detects if stylizer styles are used on that page,
 * if so, adds needed ls files and settings
 * 
 * @param array $variables - (ByRef) variables got in hook_preprocess_page
 */
function adv_theme_styles_add_styles(&$variables) {
  $styles = _adv_theme_styles_required_styles($variables['css']);
  if (!empty($styles)) {
    _adv_theme_styles_add_js($variables, $styles);
  }
}
 
function adv_theme_styles_load_all($reset = FALSE) {
  ctools_include('export');
  return ctools_export_crud_load_all('stylizer', $reset);
}
 
/**
 *
 * @param type $variables_css
 * @return array 
 */
function _adv_theme_styles_required_styles($variables_css) {
  $required_styles = array();
 
  // find all cached css files in ctools/css
  $path_part = file_create_path('ctools/css/');
  $files = array();
  foreach ($variables_css as $media) {
    foreach ($media as $module) {
      foreach ($module as $path => $val) {
        if (strpos($path, $path_part) !== FALSE) {
          $files[] = $path;
        }
      }
    }
  }
 
  if (!empty($files)) {
    // find styles from stylizer files, with thei css selectors
    ctools_include('cleanstring');
    $styles_all = adv_theme_styles_load_all();
    $styles = array();
    foreach ($styles_all as $style) {
      // class selector
      $styles[$style->name] = '.' . ctools_cleanstring($style->settings['style_base']) . '-' . ctools_cleanstring($style->name);
    }
 
    foreach ($files as $file) {
      $content = file_get_contents($file);
      foreach ($styles as $key => $selector) {
        if (strpos($content, $selector) !== FALSE) {
          $required_styles[$key] = $selector;
          break;
        }
      }
    }
  }
 
  return $required_styles;
}
 
/**
 * Adds /js/adv_theme.styles.js and needed js settings
 *
 * @param array $variables - (ByRef) variables got in hook_preprocess_page
 * @param array $styles - stylizer styles used on that page
 */
function _adv_theme_styles_add_js(&$variables, $styles) {
 
  // is style posted ?
  $style_posted = isset($_POST['adv_theme_stylizer_name']) ? $_POST['adv_theme_stylizer_name'] : false;
 
  // create js settings
  $styles_all = adv_theme_styles_load_all();
  $js_setting = array();
  foreach ($styles as $key => $selector) {
    $settings_palette = $styles_all[$key]->settings['palette'];
    if (!isset($settings_palette)) {
      continue;
    }
    $sel_more = array(
        'background' => '',
        'header-background' => ' h2',
    );
    $link_key = array(
        'background' => 'link-color',
        'header-background' => 'header-link-color',
    );
    foreach (array('background', 'header-background') as $region) {
      // 1. add background settings and selector
      if (is_array($settings_palette[$region . '-edit'])) {
        $region_settings = $settings_palette[$region . '-edit'];
        if ($key === $style_posted) {
          // posted style: there are new values !
          $region_settings = $_POST['palette'][$region . '-edit'];
        }
        $js_setting[$key][$region] = $region_settings;
        $js_setting[$key][$region]['selector'] = $selector . $sel_more[$region];
      }
 
      // 2. add links
      $region_links = !empty($settings_palette[$link_key[$region]]) ? $settings_palette[$link_key[$region]] : false;
      if ($key === $style_posted) {
        // posted style: there are new values !
        $region_links = !empty($_POST['palette'][$link_key[$region]]) ? $_POST['palette'][$link_key[$region]] : false;
      }
      // add links and selector
      if ($region_links) {
        $js_setting[$key][$region]['links'] = $region_links;
        $js_setting[$key][$region]['selector'] = $selector . $sel_more[$region];
      }
    }
  }
 
  if (!empty($js_setting)) {
    // add js file
    drupal_add_js(drupal_get_path('module', 'adv_theme') . '/js/adv_theme.styles.js');
    // add styles settings, needed theming
    $js_setting = array(
        'AdvTheme' => array(
            'styles' => $js_setting,
            'theming' => _adv_theme_styles_theming_js(),
        ),
    );
    drupal_add_js($js_setting, 'setting');
    $variables['scripts'] = drupal_get_js();
  }
}
 
/**
 * Get additional js settings from theming, needed by AdvTheme
 *
 * @return array 
 */
function _adv_theme_styles_theming_js() {
  init_theme();
  $corners = theme_get_setting('mix_and_match_corners');
  $border_radius = false;
  if (preg_match('/round-corners-(\d+)/', $corners, $matches)) {
    $border_radius = $matches[1];
  }
 
  return array(
      'body_bg' => theme_get_setting('mix_and_match_body_bg'),
      'radius' => $border_radius,
  );
}