<?php

if (!defined('ABSPATH')) {
  die('-1');
}

class QuadMenu_Compiler {

  public $redux = '';
  public $args = array();
  public static $instance;

  public function __construct() {

    add_filter('quadmenu_global_js_data', array($this, 'js_data'));

    add_action('init', array($this, 'activation'));

    add_action('redux/page/' . QUADMENU_DB_OPTIONS . '/enqueue', array($this, 'enqueue'));

    add_filter('redux/options/' . QUADMENU_DB_OPTIONS . '/ajax_save/response', array($this, 'developer_variables'));

    add_filter('redux/options/' . QUADMENU_DB_OPTIONS . '/ajax_save/response', array($this, 'compile_variables'));

    add_filter('redux/options/' . QUADMENU_DB_OPTIONS . '/compiler', array($this, 'compiler'), 5, 3);

    add_action('wp_ajax_quadmenu_compiler_save', array($this, 'compiler_save'));

    add_action('wp_ajax_nopriv_quadmenu_compiler_save', array($this, 'compiler_save'));
  }

  public static function instance() {
    if (!isset(self::$instance)) {
      self::$instance = new QuadMenu_Compiler();
    }
    return self::$instance;
  }

  function activation() {

    if (!get_transient('_quadmenu_activation'))
      return;

    Quadmenu_Compiler::do_compiler(true);
  }

  function js_data($data) {

    global $quadmenu;

    $data['debug'] = QUADMENU_DEV;

    if ($compiler = $this->run_compiler()) {
      $data['variables'] = self::less_variables($quadmenu);
      $data['compiler'] = $compiler;
    }

    $data['files'] = apply_filters('quadmenu_compiler_files', array());
    $data['nonce'] = wp_create_nonce('quadmenu');

    return $data;
  }

  public function enqueue() {

    wp_register_script('quadmenu-less', QUADMENU_PLUGIN_URL . 'assets/backend/js/less.min.js', array(), QUADMENU_PLUGIN_VERSION, true);

    wp_enqueue_script('quadmenu-compiler', QUADMENU_PLUGIN_URL . 'assets/backend/js/quadmenu-compiler' . QuadMenu::isMin() . '.js', array('quadmenu-less'), QUADMENU_PLUGIN_VERSION, true);

    wp_localize_script('quadmenu-compiler', 'quadmenu', apply_filters('quadmenu_global_js_data', array()));
  }

  function developer_variables($return_array) {

    if (is_array($return_array)) {
      $return_array['options'] = apply_filters('quadmenu_developer_options', $return_array['options']);
    }

    return $return_array;
  }

  function compile_variables($return_array) {

    if (is_array($return_array)) {
      $return_array['variables'] = self::less_variables($return_array['options']);
    }

    return $return_array;
  }

  public function compiler_save() {

    if (!check_ajax_referer('quadmenu', 'nonce', false)) {
      QuadMenu::send_json_error(esc_html__('Please reload page.', 'quadmenu'));
    }

    $return_array = array('status' => 'error');

    if (!isset($_REQUEST['output']['imports'][0])) {
      QuadMenu_Redux::add_notification('red', esc_html__('Imports is undefined.', 'quadmenu'));
      wp_die();
    }

    if (!isset($_REQUEST['output']['css'])) {
      QuadMenu_Redux::add_notification('red', esc_html__('CSS is undefined.', 'quadmenu'));
      wp_die();
    }

    $return_array['status'] = 'success';

    try {
      $this->save_file(str_replace('.less', '.css', basename($_REQUEST['output']['imports'][0])), QUADMENU_UPLOAD_DIR, stripslashes($_REQUEST['output']['css']));
    } catch (Exception $e) {
      $return_array['status'] = $e->getMessage();
    }

    ob_start();

    QuadMenu_Redux::notification_bar();

    $notification_bar = ob_get_contents();

    ob_end_clean();

    $return_array['notification_bar'] = $notification_bar;

    Quadmenu_Compiler::do_compiler(false);

    echo json_encode($return_array);

    wp_die();
  }

  public static function do_compiler($run = true) {

    if ($run) {
      update_option('_quadmenu_compiler', $run);
    } else {
      delete_option('_quadmenu_compiler');
    }
  }

  public function run_compiler() {

    return (int) get_option('_quadmenu_compiler', false);
  }

  public function compiler($options, $css, $changed) {

    Quadmenu_Compiler::do_compiler(true);

    QuadMenu_Redux::add_notification('yellow', sprintf(esc_html__('Some style options have been changed. Your stylesheet will be compiled to reflect changes. %s.', 'quadmenu'), esc_html__('Please wait', 'quadmenu')));
  }

  public function save_file($name = false, $dir = false, $content = false) {

    if (!$name || !$dir || !$content) {
      return;
    }

    if (!class_exists('ReduxFrameworkInstances')) {
      QuadMenu_Redux::add_notification('error', esc_html__('ReduxFramework is not installed', 'quadmenu'));
      return;
    }

    $this->redux = ReduxFrameworkInstances::get_instance(QUADMENU_DB_OPTIONS);

    // check if file exists ------------------------------------------------
    $is_file = is_file(trailingslashit($dir) . $name);

    // create the folder ---------------------------------------------------
    if (!is_dir($dir)) {
      $this->redux->filesystem->execute('mkdir', $dir);
      QuadMenu_Redux::add_notification('yellow', sprintf(esc_html__('Folder created : %1$s', 'quadmenu'), $dir));
    }

    // write file ----------------------------------------------------------
    if ($this->redux->filesystem->execute('put_contents', trailingslashit($dir) . $name, array('content' => $content))) {
      QuadMenu_Redux::add_notification('green', sprintf(esc_html__('File has been %2$s : %1$s', 'quadmenu'), trailingslashit($dir) . $name, $is_file ? esc_html__('updated', 'quadmenu') : esc_html__('created', 'quadmenu')));
      return;
    }

    QuadMenu_Redux::add_notification('error', sprintf(esc_html__('File cant\'t been created : %1$s', 'quadmenu'), trailingslashit($dir) . $name));
  }

  static public function less_variables(&$data, $header = '') {

    $html = array(); //QuadMenu_Compiler::less_themes();

    if (!is_array($data))
      return $data;

    if (isset($data['styles'])) {
      unset($data['styles']);
    }
    
    if (isset($data['styles_normalize'])) {
      unset($data['styles_normalize']);
    }    
    
    if (isset($data['styles_widgets'])) {
      unset($data['styles_widgets']);
    }    
    
    if (isset($data['styles_pscrollbar'])) {
      unset($data['styles_pscrollbar']);
    }    
    
    if (isset($data['styles_owlcarousel'])) {
      unset($data['styles_owlcarousel']);
    }    
    
    //if (isset($data['styles_icons'])) {
    //  unset($data['styles_icons']);
    //}

    if (isset($data['viewport'])) {
      unset($data['viewport']);
    }

    if (isset($data['css'])) {
      unset($data['css']);
    }

    if (isset($data['social'])) {
      unset($data['social']);
    }      

    if (isset($data['errors'])) {
      unset($data['errors']);
    }

    if (isset($data['warnings'])) {
      unset($data['warnings']);
    }

    if (isset($data['notification_bar'])) {
      unset($data['notification_bar']);
    }

    foreach ($data as $key => &$val) {

      $value = ($key != 'font-options') ? $val : '';

      $value = (filter_var($value, FILTER_VALIDATE_URL)) ? "'{$value}'" : $value;

      if (is_array($value)) {
        $html = array_merge($html, self::less_variables($value, "{$key}_"));
      } elseif ($value != '') {
        $html["@{$header}{$key}"] = $value;
      } else {
        $html["@{$header}{$key}"] = 0;
      }
    }

    return $html;
  }

  function redux_compiler($return_array = array()) {

    global $quadmenu;

    if (is_array($return_array)) {
      $return_array['options'] = apply_filters('quadmenu_developer_options', $quadmenu);
      $return_array['variables'] = self::less_variables($return_array['options']);
    }

    return $return_array;
  }

}

new QuadMenu_Compiler();