<?php

namespace WPGO_Plugins\Plugin_Framework;

/**
 *
 * Create duplicate post.
 *
 * @since 0.0.1
 */
class Create_Duplicate_Post_FW
{
  protected $module_roots;

  /* Class constructor. */
  public function __construct( $module_roots, $plugin_data, $custom_plugin_data )
  {
    $this->module_roots = $module_roots;
    $this->custom_plugin_data = $custom_plugin_data;
    $this->plugin_data = $plugin_data;

    add_action ( 'wp_before_admin_bar_render', array( &$this, 'duplicate_admin_bar_custom_link' ) );
    add_action( 'admin_action_add_duplicate_as_new_post', array( &$this, 'add_duplicate_as_new_post' ) );
    add_filter( 'post_row_actions', array( &$this, 'make_duplicate_link_row' ), 10, 2 );
  }

  /**
   * Create link to duplicate post.
   *
   * @param $post_id
   *
   * @return wp_nonce_url
   */
  public function duplicate_create_link( $post_id = 0 ) {
    if ( !$post_data = get_post( $post_id ) ) {
      return;
    }
    $action_name = "add_duplicate_as_new_post";
    $action = '?action='.$action_name.'&amp;post='.$post_data->ID;
    return wp_nonce_url( admin_url( "admin.php". $action ) );
  }

  /**
   * Create duplicate post with associated post meta.
   *
   * @param $post_data
   *
   * @return new_post_id
   */
  public function create_duplicate_post( $post_data ) {
    global $wpdb;
    $old_post_id = $post_data->ID;
    $new_post_author = wp_get_current_user();
    $new_post_author_id = $new_post_author->ID;
    $new_post_status = "publish";
    $new_post_date = $post_data->post_date;
    $new_duplicate_post_args = array(
      'menu_order'            => $post_data->menu_order ? $menu_order : "",
      'comment_status'        => $post_data->comment_status,
      'ping_status'           => $post_data->ping_status,
      'post_author'           => $new_post_author_id,
      'post_content'          => $post_data->post_content ? $post_data->post_content : "" ,
      'post_content_filtered' => $post_data->post_content_filtered ? $post_data->post_content_filtered : "" ,
      'post_excerpt'          => $post_data->post_excerpt ? $post_data->post_excerpt : "",
      'post_mime_type'        => $post_data->post_mime_type,
      'post_parent'           => $post_data->post_parent ? $post_data->post_parent : "",
      'post_password'         => $post_data->post_password,
      'post_status'           => $new_post_status,
      'post_title'            => $post_data->post_title . " (Copy)",
      'post_type'             => $post_data->post_type,
      'post_name'             => $post_data->post_name,
      'post_date'             => $post_data->post_date,
      'post_date_gmt'         => get_gmt_from_date( $new_post_date )
    );
    $new_post_id = wp_insert_post( $new_duplicate_post_args );
    $taxonomies = get_object_taxonomies( $post_data->post_type ); // returns array of taxonomy names for post type, ex array("category", "post_tag");
    foreach ( $taxonomies as $taxonomy ) {
      $post_terms = wp_get_object_terms( $old_post_id, $taxonomy, array( 'fields' => 'slugs') );
      wp_set_object_terms( $new_post_id, $post_terms, $taxonomy, false );
    }
    
    /*
     * duplicate all post meta.
     */
    $post_meta_info = get_post_meta( $old_post_id );
    if ( count( $post_meta_info ) != 0 ) {
      foreach ( $post_meta_info as $meta_key => $meta_info ) {
        if( $meta_key == '_wp_old_slug' ) continue;
        $meta_value = addslashes( $meta_info [0]);
        $old_post_meta_value = get_post_meta( $old_post_id, $meta_key, $meta_value );
        update_post_meta( $new_post_id, $meta_key, $old_post_meta_value );
      }
    }
    return $new_post_id;
  }

  /**
   * Add the duplicate link to action list for wp_before_admin_bar_render.
   *
   * @param None
   *
   * @return add link on admin bar
   */
  public function duplicate_admin_bar_custom_link() {
    global $wp_admin_bar, $typenow;
    $current_object = get_queried_object();
    if ( is_admin() && isset( $_GET['post'] ) && $typenow == $this->custom_plugin_data->cpt_slug ){
      $post_id = $_GET['post'];
      $post_date = get_post($post_id);
      if( !is_null($post_date) ) {
        $wp_admin_bar->add_menu(
          array(
            'id'    => 'duplicate-' . $this->custom_plugin_data->plugin_cpt_slug . '-cpt',
            'title' => $this->custom_plugin_data->duplicate_post_label,
            'href'  => $this->duplicate_create_link( $post_id )
          )
        );
      }
    }
  }

  /**
   * Create duplicate post and redirect to newly create post.
   *
   * @param None
   *
   * @return wp_redirect on post page with new duplicated post
   */
  public function add_duplicate_as_new_post() {
    global $wpdb;
    if ( ! ( isset( $_GET['post']) || isset( $_POST['post'])  || ( isset($_REQUEST['action']) && 'add_duplicate_as_new_post' == $_REQUEST['action'] ) ) ) {
      wp_die('No post to duplicate has been supplied!');
    }

    // Get the original post
    $post_id = ( isset( $_GET['post'] ) ? $_GET['post'] : $_POST['post'] );
    $post_data = get_post( $post_id );
    // Copy the post and insert it
    if ( isset( $post_data ) && $post_data != null ) {
      $new_id = $this->create_duplicate_post( $post_data );
      wp_redirect( admin_url( 'post.php?action=edit&post=' . $new_id ) ) ;
      exit;
    }
  }

  /**
  * Add the duplicate link to action list for post_row_actions.
  *
  * @param $actions, $post_data
  *
  * @return $actions
  */
  public function make_duplicate_link_row( $actions, $post_data ) {
    global $wp_admin_bar, $typenow;
    $title = _draft_or_post_title( $post_data );
    if ( current_user_can('edit_posts') && $this->custom_plugin_data->cpt_slug==$typenow && $post_data->post_status!='trash' ) {
      $actions['add_duplicate_as_new_post'] = '<a href="' .$this->duplicate_create_link( $post_data->ID). '" title="'.$this->custom_plugin_data->duplicate_post_label.'" rel="permalink">'.esc_html__( 'Duplicate' ) .'</a>';
    }
    return $actions;
  }
} /* End class definition */