<?php if( ! defined( 'ABSPATH' ) ) { die; } // Cannot access directly.
/**
 *
 * Options Class
 *
 * @since 1.0.0
 * @version 1.0.0
 *
 */
if( ! class_exists( 'CSF_Options' ) ) {
  class CSF_Options extends CSF_Abstract {

    // constans
    public $unique       = '';
    public $notice       = '';
    public $abstract     = 'options';
    public $sections     = array();
    public $options      = array();
    public $errors       = array();
    public $pre_tabs     = array();
    public $pre_fields   = array();
    public $pre_sections = array();
    public $args         = array(

      // framework title
      'framework_title'         => 'Codestar Framework <small>by Codestar</small>',
      'framework_class'         => '',

      // menu settings
      'menu_title'              => '',
      'menu_slug'               => '',
      'menu_type'               => 'menu',
      'menu_capability'         => 'manage_options',
      'menu_icon'               => null,
      'menu_position'           => null,
      'menu_hidden'             => false,
      'menu_parent'             => '',
      'sub_menu_title'          => '',

      // menu extras
      'show_bar_menu'           => true,
      'show_sub_menu'           => true,
      'show_network_menu'       => true,
      'show_in_customizer'      => false,

      'show_search'             => true,
      'show_reset_all'          => true,
      'show_reset_section'      => true,
      'show_footer'             => true,
      'show_all_options'        => true,
      'show_form_warning'       => true,
      'sticky_header'           => true,
      'save_defaults'           => true,
      'ajax_save'               => true,

      // admin bar menu settings
      'admin_bar_menu_icon'     => '',
      'admin_bar_menu_priority' => 80,

      // footer
      'footer_text'             => '',
      'footer_after'            => '',
      'footer_credit'           => '',

      // database model
      'database'                => '', // options, transient, theme_mod, network
      'transient_time'          => 0,

      // contextual help
      'contextual_help'         => array(),
      'contextual_help_sidebar' => '',

      // typography options
      'enqueue_webfont'         => true,
      'async_webfont'           => false,

      // others
      'output_css'              => true,

      // theme
      'theme'                   => 'dark',
      'class'                   => '',

      // external default values
      'defaults'                => array(),

    );

    // run framework construct
    public function __construct( $key, $params = array() ) {

      $this->unique   = $key;
      $this->args     = apply_filters( "csf_{$this->unique}_args", wp_parse_args( $params['args'], $this->args ), $this );
      $this->sections = apply_filters( "csf_{$this->unique}_sections", $params['sections'], $this );

      // run only is admin panel options, avoid performance loss
      $this->pre_tabs     = $this->pre_tabs( $this->sections );
      $this->pre_fields   = $this->pre_fields( $this->sections );
      $this->pre_sections = $this->pre_sections( $this->sections );

      $this->get_options();
      $this->set_options();
      $this->save_defaults();

      add_action( 'admin_menu', array( &$this, 'add_admin_menu' ) );
      add_action( 'admin_bar_menu', array( &$this, 'add_admin_bar_menu' ), $this->args['admin_bar_menu_priority'] );
      add_action( 'wp_ajax_csf_'. $this->unique .'_ajax_save', array( &$this, 'ajax_save' ) );

      if( ! empty( $this->args['show_network_menu'] ) ) {
        add_action( 'network_admin_menu', array( &$this, 'add_admin_menu' ) );
      }

      // wp enqeueu for typography and output css
      parent::__construct();

    }

    // instance
    public static function instance( $key, $params = array() ) {
      return new self( $key, $params );
    }

    public function pre_tabs( $sections ) {

      $result  = array();
      $parents = array();
      $count   = 100;

      foreach( $sections as $key => $section ) {
        if( ! empty( $section['parent'] ) ) {
          $section['priority'] = ( isset( $section['priority'] ) ) ? $section['priority'] : $count;
          $parents[$section['parent']][] = $section;
          unset( $sections[$key] );
        }
        $count++;
      }

      foreach( $sections as $key => $section ) {
        $section['priority'] = ( isset( $section['priority'] ) ) ? $section['priority'] : $count;
        if( ! empty( $section['id'] ) && ! empty( $parents[$section['id']] ) ) {
          $section['subs'] = wp_list_sort( $parents[$section['id']], array( 'priority' => 'ASC' ), 'ASC', true );
        }
        $result[] = $section;
        $count++;
      }

      return wp_list_sort( $result, array( 'priority' => 'ASC' ), 'ASC', true );
    }

    public function pre_fields( $sections ) {

      $result  = array();

      foreach( $sections as $key => $section ) {
        if( ! empty( $section['fields'] ) ) {
          foreach( $section['fields'] as $field ) {
            $result[] = $field;
          }
        }
      }

      return $result;
    }

    public function pre_sections( $sections ) {

      $result = array();

      foreach( $this->pre_tabs as $tab ) {
        if( ! empty( $tab['subs'] ) ) {
          foreach( $tab['subs'] as $sub ) {
            $result[] = $sub;
          }
        }
        if( empty( $tab['subs'] ) ) {
          $result[] = $tab;
        }
      }

      return $result;
    }

    // add admin bar menu
    public function add_admin_bar_menu( $wp_admin_bar ) {

      if( ! empty( $this->args['show_bar_menu'] ) && empty( $this->args['menu_hidden'] ) ) {

        global $submenu;

        $menu_slug = $this->args['menu_slug'];
        $menu_icon = ( ! empty( $this->args['admin_bar_menu_icon'] ) ) ? '<span class="csf-ab-icon ab-icon '. $this->args['admin_bar_menu_icon'] .'"></span>' : '';

        $wp_admin_bar->add_node( array(
          'id'    => $menu_slug,
          'title' => $menu_icon . $this->args['menu_title'],
          'href'  => ( is_network_admin() ) ? network_admin_url( 'admin.php?page='. $menu_slug ) : admin_url( 'admin.php?page='. $menu_slug ),
        ) );

        if( ! empty( $submenu[$menu_slug] ) ) {
          foreach( $submenu[$menu_slug] as $key => $menu ) {
            $wp_admin_bar->add_node( array(
              'parent' => $menu_slug,
              'id'     => $menu_slug .'-'. $key,
              'title'  => $menu[0],
              'href'   => ( is_network_admin() ) ? network_admin_url( 'admin.php?page='. $menu[2] ) : admin_url( 'admin.php?page='. $menu[2] ),
            ) );
          }
        }

        if( ! empty( $this->args['show_network_menu'] ) ) {
          $wp_admin_bar->add_node( array(
            'parent' => 'network-admin',
            'id'     => $menu_slug .'-network-admin',
            'title'  => $menu_icon . $this->args['menu_title'],
            'href'   => network_admin_url( 'admin.php?page='. $menu_slug ),
          ) );
        }

      }

    }

    public function ajax_save() {

      if( ! empty( $_POST['data'] ) ) {

        $_POST = json_decode( stripslashes( $_POST['data'] ), true );

        if( wp_verify_nonce( csf_get_var( 'csf_options_nonce'. $this->unique ), 'csf_options_nonce' ) ) {

          $this->set_options();

          wp_send_json_success( array( 'success' => true, 'notice' => $this->notice, 'errors' => $this->errors ) );

        }

      }

      wp_send_json_error( array( 'success' => false, 'error' => esc_html__( 'Error while saving.', 'csf' ) ) );

    }

    // get default value
    public function get_default( $field, $options = array() ) {

      $default = ( isset( $this->args['defaults'][$field['id']] ) ) ? $this->args['defaults'][$field['id']] : '';
      $default = ( isset( $field['default'] ) ) ? $field['default'] : $default;
      $default = ( isset( $options[$field['id']] ) ) ? $options[$field['id']] : $default;

      return $default;

    }

    // save defaults and set new fields value to main options
    public function save_defaults() {

      $tmp_options = $this->options;

      foreach( $this->pre_fields as $field ) {
        if( ! empty( $field['id'] ) ) {
          $this->options[$field['id']] = $this->get_default( $field, $this->options );
        }
      }

      if( $this->args['save_defaults'] && empty( $tmp_options ) ) {
        $this->save_options( $this->options );
      }

    }

    // set options
    public function set_options() {

      if( wp_verify_nonce( csf_get_var( 'csf_options_nonce'. $this->unique ), 'csf_options_nonce' ) ) {

        $request    = csf_get_var( $this->unique, array() );
        $transient  = csf_get_var( 'csf_transient' );
        $section_id = ( ! empty( $transient['section'] ) ) ? $transient['section'] : '';

        // import data
        if( ! empty( $transient['csf_import_data'] ) ) {

          $import_data = json_decode( stripslashes( trim( $transient['csf_import_data'] ) ), true );
          $request = ( is_array( $import_data ) ) ? $import_data : array();

          $this->notice = esc_html__( 'Success. Imported backup options.', 'csf' );

        } else if( ! empty( $transient['reset'] ) ) {

          foreach( $this->pre_fields as $field ) {
            if( ! empty( $field['id'] ) ) {
              $request[$field['id']] = $this->get_default( $field );
            }
          }

          $this->notice = esc_html__( 'Default options restored.', 'csf' );

        } else if( ! empty( $transient['reset_section'] ) && ! empty( $section_id ) ) {

          if( ! empty( $this->pre_sections[$section_id-1]['fields'] ) ) {

            foreach( $this->pre_sections[$section_id-1]['fields'] as $field ) {
              if( ! empty( $field['id'] ) ) {
                $request[$field['id']] = $this->get_default( $field );
              }
            }

          }

          $this->notice = esc_html__( 'Default options restored for only this section.', 'csf' );

        } else {

          // sanitize and validate
          foreach( $this->pre_fields as $field ) {

            if( ! empty( $field['id'] ) ) {

              // sanitize
              if( ! empty( $field['sanitize'] ) ) {

                $sanitize = $field['sanitize'];
                $value_sanitize = isset( $request[$field['id']] ) ? $request[$field['id']] : '';
                $request[$field['id']] = call_user_func( $sanitize, $value_sanitize );

              }

              // validate
              if( ! empty( $field['validate'] ) ) {

                $value_validate = isset( $request[$field['id']] ) ? $request[$field['id']] : '';
                $has_validated  = call_user_func( $field['validate'], $value_validate );

                if( ! empty( $has_validated ) ) {
                  $request[$field['id']] = ( isset( $this->options[$field['id']] ) ) ? $this->options[$field['id']] : '';
                  $this->errors[$field['id']] = $has_validated;
                }

              }

              // auto sanitize
              if( ! isset( $request[$field['id']] ) || is_null( $request[$field['id']] ) ) {
                $request[$field['id']] = '';
              }

            }

          }

        }

        // ignore nonce requests
        if( isset( $request['_nonce'] ) ) { unset( $request['_nonce'] ); }

        $request = wp_unslash( $request );

        $request = apply_filters( "csf_{$this->unique}_save", $request, $this );

        do_action( "csf_{$this->unique}_save_before", $request, $this );

        $this->options = $request;

        $this->save_options( $request );

        do_action( "csf_{$this->unique}_save_after", $request, $this );

        if( empty( $this->notice ) ) {
          $this->notice = esc_html__( 'Settings saved.', 'csf' );
        }

      }

      return true;

    }

    // save options database
    public function save_options( $request ) {

      if( $this->args['database'] === 'transient' ) {
        set_transient( $this->unique, $request, $this->args['transient_time'] );
      } else if( $this->args['database'] === 'theme_mod' ) {
        set_theme_mod( $this->unique, $request );
      } else if( $this->args['database'] === 'network' ) {
        update_site_option( $this->unique, $request );
      } else {
        update_option( $this->unique, $request );
      }

      do_action( "csf_{$this->unique}_saved", $request, $this );

    }

    // get options from database
    public function get_options() {

      if( $this->args['database'] === 'transient' ) {
        $this->options = get_transient( $this->unique );
      } else if( $this->args['database'] === 'theme_mod' ) {
        $this->options = get_theme_mod( $this->unique );
      } else if( $this->args['database'] === 'network' ) {
        $this->options = get_site_option( $this->unique );
      } else {
        $this->options = get_option( $this->unique );
      }

      if( empty( $this->options ) ) {
        $this->options = array();
      }

      return $this->options;

    }

    // wp api: admin menu
    public function add_admin_menu() {

      extract( $this->args );

      if( $menu_type === 'submenu' ) {

        $menu_page = call_user_func( 'add_submenu_page', $menu_parent, $menu_title, $menu_title, $menu_capability, $menu_slug, array( &$this, 'add_options_html' ) );

      } else {

        $menu_page = call_user_func( 'add_menu_page', $menu_title, $menu_title, $menu_capability, $menu_slug, array( &$this, 'add_options_html' ), $menu_icon, $menu_position );

        if ( ! empty( $sub_menu_title ) ) {
          call_user_func( 'add_submenu_page', $menu_slug, $sub_menu_title, $sub_menu_title, $menu_capability, $menu_slug, array( &$this, 'add_options_html' ) );
        }

        if( ! empty( $this->args['show_sub_menu'] ) && count( $this->pre_tabs ) > 1 ) {

          // create submenus
          $tab_key = 1;
          foreach ( $this->pre_tabs as $section ) {

            call_user_func( 'add_submenu_page', $menu_slug, $section['title'],  $section['title'], $menu_capability, $menu_slug .'#tab='. $tab_key, '__return_null' );

            if( ! empty( $section['subs'] ) ) {
              $tab_key += ( count( $section['subs'] )-1 );
            }

            $tab_key++;

          }

          remove_submenu_page( $menu_slug, $menu_slug );

        }

        if( ! empty( $menu_hidden ) ) {
          remove_menu_page( $menu_slug );
        }

      }

      add_action( 'load-'. $menu_page, array( &$this, 'add_page_on_load' ) );

    }

    public function add_page_on_load() {

      if( ! empty( $this->args['contextual_help'] ) ) {

        $screen = get_current_screen();

        foreach( $this->args['contextual_help'] as $tab ) {
          $screen->add_help_tab( $tab );
        }

        if( ! empty( $this->args['contextual_help_sidebar'] ) ) {
          $screen->set_help_sidebar( $this->args['contextual_help_sidebar'] );
        }

      }

      add_filter( 'admin_footer_text', array( &$this, 'add_admin_footer_text' ) );

    }

    public function add_admin_footer_text() {
      $default = 'Thank you for creating with <a href="http://codestarframework.com/" target="_blank">Codestar Framework</a>';
      echo ( ! empty( $this->args['footer_credit'] ) ) ? $this->args['footer_credit'] : $default;
    }

    public function error_check( $sections, $err = '' ) {

      if( ! $this->args['ajax_save'] ) {

        if( ! empty( $sections['fields'] ) ) {
          foreach( $sections['fields'] as $field ) {
            if( ! empty( $field['id'] ) ) {
              if( array_key_exists( $field['id'], $this->errors ) ) {
                $err = '<span class="csf-label-error">!</span>';
              }
            }
          }
        }

        if( ! empty( $sections['subs'] ) ) {
          foreach( $sections['subs'] as $sub ) {
            $err = $this->error_check( $sub, $err );
          }
        }

        if( ! empty( $sections['id'] ) && array_key_exists( $sections['id'], $this->errors ) ) {
          $err = $this->errors[$sections['id']];
        }

      }

      return $err;
    }

    // option page html output
    public function add_options_html() {

      $has_nav       = ( count( $this->pre_tabs ) > 1 ) ? true : false;
      $show_all      = ( ! $has_nav ) ? ' csf-show-all' : '';
      $ajax_class    = ( $this->args['ajax_save'] ) ? ' csf-save-ajax' : '';
      $sticky_class  = ( $this->args['sticky_header'] ) ? ' csf-sticky-header' : '';
      $wrapper_class = ( $this->args['framework_class'] ) ? ' '. $this->args['framework_class'] : '';
      $theme         = ( $this->args['theme'] ) ? ' csf-theme-'. $this->args['theme'] : '';
      $class         = ( $this->args['class'] ) ? ' '. $this->args['class'] : '';

      do_action( 'csf_options_before' );

      echo '<div class="csf csf-options'. $theme . $class . $wrapper_class .'" data-slug="'. $this->args['menu_slug'] .'" data-unique="'. $this->unique .'">';

        echo '<div class="csf-container">';

        echo '<form method="post" action="" enctype="multipart/form-data" id="csf-form" autocomplete="off">';

        echo '<input type="hidden" class="csf-section-id" name="csf_transient[section]" value="1">';

        wp_nonce_field( 'csf_options_nonce', 'csf_options_nonce'. $this->unique );

        echo '<div class="csf-header'. esc_attr( $sticky_class ) .'">';
        echo '<div class="csf-header-inner">';

          echo '<div class="csf-header-left">';
          echo '<h1>'. $this->args['framework_title'] .'</h1>';
          echo '</div>';

          echo '<div class="csf-header-right">';

            $notice_class = ( ! empty( $this->notice ) ) ? ' csf-form-show' : '';
            $notice_text  = ( ! empty( $this->notice ) ) ? $this->notice : '';

            echo '<div class="csf-form-result csf-form-success'. $notice_class .'">'. $notice_text .'</div>';

            echo ( $this->args['show_form_warning'] ) ? '<div class="csf-form-result csf-form-warning">'. esc_html__( 'Settings have changed, you should save them!', 'csf' ) .'</div>' : '';

            echo ( $has_nav && $this->args['show_all_options'] ) ? '<div class="csf-expand-all" title="'. esc_html__( 'show all options', 'csf' ) .'"><i class="fa fa-outdent"></i></div>' : '';

            echo ( $this->args['show_search'] ) ? '<div class="csf-search"><input type="text" name="csf-search" placeholder="'. esc_html__( 'Search option(s)', 'csf' ) .'" autocomplete="off" /></div>' : '';

            echo '<div class="csf-buttons">';
            echo '<input type="submit" name="'. $this->unique .'[_nonce][save]" class="button button-primary csf-top-save csf-save'. $ajax_class .'" value="'. esc_html__( 'Save', 'csf' ) .'" data-save="'. esc_html__( 'Saving...', 'csf' ) .'">';
            echo ( $this->args['show_reset_section'] ) ? '<input type="submit" name="csf_transient[reset_section]" class="button button-secondary csf-reset-section csf-confirm" value="'. esc_html__( 'Reset Section', 'csf' ) .'" data-confirm="'. esc_html__( 'Are you sure to reset this section options?', 'csf' ) .'">' : '';
            echo ( $this->args['show_reset_all'] ) ? '<input type="submit" name="csf_transient[reset]" class="button csf-warning-primary csf-reset-all csf-confirm" value="'. esc_html__( 'Reset All', 'csf' ) .'" data-confirm="'. esc_html__( 'Are you sure to reset all options?', 'csf' ) .'">' : '';
            echo '</div>';

          echo '</div>';

          echo '<div class="clear"></div>';
          echo '</div>';
        echo '</div>';

        echo '<div class="csf-wrapper'. $show_all .'">';

          if( $has_nav ) {
            echo '<div class="csf-nav csf-nav-options">';

              echo '<ul>';

              $tab_key = 1;

              foreach( $this->pre_tabs as $tab ) {

                $tab_error = $this->error_check( $tab );
                $tab_icon  = ( ! empty( $tab['icon'] ) ) ? '<i class="'. $tab['icon'] .'"></i>' : '';

                if( ! empty( $tab['subs'] ) ) {

                  echo '<li class="csf-tab-depth-0">';

                    echo '<a href="#tab='. $tab_key .'" class="csf-arrow">'. $tab_icon . $tab['title'] . $tab_error .'</a>';

                    echo '<ul>';

                    foreach ( $tab['subs'] as $sub ) {

                      $sub_error = $this->error_check( $sub );
                      $sub_icon  = ( ! empty( $sub['icon'] ) ) ? '<i class="'. $sub['icon'] .'"></i>' : '';

                      echo '<li class="csf-tab-depth-1"><a id="csf-tab-link-'. $tab_key .'" href="#tab='. $tab_key .'">'. $sub_icon . $sub['title'] . $sub_error .'</a></li>';

                      $tab_key++;
                    }

                    echo '</ul>';

                  echo '</li>';

                } else {

                  echo '<li class="csf-tab-depth-0"><a id="csf-tab-link-'. $tab_key .'" href="#tab='. $tab_key .'">'. $tab_icon . $tab['title'] . $tab_error .'</a></li>';

                  $tab_key++;
                }

              }

              echo '</ul>';

            echo '</div>';

          }

          echo '<div class="csf-content">';

            echo '<div class="csf-sections">';

            $section_key = 1;

            foreach( $this->pre_sections as $section ) {

              $onload = ( ! $has_nav ) ? ' csf-onload' : '';
              $section_icon = ( ! empty( $section['icon'] ) ) ? '<i class="csf-icon '. $section['icon'] .'"></i>' : '';

              echo '<div id="csf-section-'. $section_key .'" class="csf-section'. $onload .'">';
              echo ( $has_nav ) ? '<div class="csf-section-title"><h3>'. $section_icon . $section['title'] .'</h3></div>' : '';
              echo ( ! empty( $section['description'] ) ) ? '<div class="csf-field csf-section-description">'. $section['description'] .'</div>' : '';

              if( ! empty( $section['fields'] ) ) {

                foreach( $section['fields'] as $field ) {

                  $is_field_error = $this->error_check( $field );

                  if( ! empty( $is_field_error ) ) {
                    $field['_error'] = $is_field_error;
                  }

                  $value = ( ! empty( $field['id'] ) && isset( $this->options[$field['id']] ) ) ? $this->options[$field['id']] : '';

                  CSF::field( $field, $value, $this->unique, 'options' );

                }

              } else {

                echo '<div class="csf-no-option csf-text-muted">'. esc_html__( 'No option provided by developer.', 'csf' ) .'</div>';

              }

              echo '</div>';

              $section_key++;
            }

            echo '</div>';

            echo '<div class="clear"></div>';

          echo '</div>';

          echo '<div class="csf-nav-background"></div>';

        echo '</div>';

        if( ! empty( $this->args['show_footer'] ) ) {

          echo '<div class="csf-footer">';

          echo '<div class="csf-buttons">';
          echo '<input type="submit" name="csf_transient[save]" class="button button-primary csf-save'. $ajax_class .'" value="'. esc_html__( 'Save', 'csf' ) .'" data-save="'. esc_html__( 'Saving...', 'csf' ) .'">';
          echo ( $this->args['show_reset_section'] ) ? '<input type="submit" name="csf_transient[reset_section]" class="button button-secondary csf-reset-section csf-confirm" value="'. esc_html__( 'Reset Section', 'csf' ) .'" data-confirm="'. esc_html__( 'Are you sure to reset this section options?', 'csf' ) .'">' : '';
          echo ( $this->args['show_reset_all'] ) ? '<input type="submit" name="csf_transient[reset]" class="button csf-warning-primary csf-reset-all csf-confirm" value="'. esc_html__( 'Reset All', 'csf' ) .'" data-confirm="'. esc_html__( 'Are you sure to reset all options?', 'csf' ) .'">' : '';
          echo '</div>';

          echo ( ! empty( $this->args['footer_text'] ) ) ? '<div class="csf-copyright">'. $this->args['footer_text'] .'</div>' : '';

          echo '<div class="clear"></div>';
          echo '</div>';

        }

        echo '</form>';

        echo '</div>';

        echo '<div class="clear"></div>';

        echo ( ! empty( $this->args['footer_after'] ) ) ? $this->args['footer_after'] : '';

      echo '</div>';

      do_action( 'csf_options_after' );

    }
  }
}
