<?php

namespace MasterAddons\Modules;

/**
 * Author Name: Liton Arefin
 * Author URL: https://jeweltheme.com
 * Date: 7/4/2020
 */
if (!defined('ABSPATH')) exit; // If this file is called directly, abort.

class JLTMA_Extension_Post_Page_Duplicator
{

	private static $instance = null;

	public static function get_instance()
	{
		if (!self::$instance) {
			self::$instance = new self;
		}
		return self::$instance;
	}

	public function __construct()
	{
		add_action('admin_action_jltma_duplicate', [$this, 'jltma_duplicate_post_as_draft']);
		add_filter('post_row_actions', [$this, 'jltma_duplicator_row_actions'], 10, 2);
		add_filter('page_row_actions', [$this, 'jltma_duplicator_row_actions'], 10, 2);
	}

	/**
	 * Check if current user can clone
	 *
	 * @return bool
	 */
	public function user_can_clone($post)
	{
		if(!current_user_can('edit_posts')){
			return false;
		}

		if (current_user_can('editor') || current_user_can('administrator')) {
			return true;
		}

		if (current_user_can('contributor') || current_user_can('author')) {
			$get_current_user_id = get_current_user_id();
			$post = get_post($post);
			$author_id = $post->post_author;
			if($get_current_user_id == $author_id){
				return true;
			}
		}
		return false;
	}


	/*
	 * Add the duplicate link to action list for post_row_actions
	 */
	public function jltma_duplicator_row_actions($actions, $post)
	{
		if (!$this->user_can_clone($post)) {
			return $actions;
		}

		$jltma_duplicate_link = admin_url('admin.php?action=jltma_duplicate&post=' . absint($post->ID));
		$jltma_duplicate_link = wp_nonce_url($jltma_duplicate_link, 'jltma_post_duplicator_nonce');

		$actions['jltma_duplicate'] = sprintf('<a href="%s" title="%s" rel="permalink">%s</a>', $jltma_duplicate_link,  __('Duplicate this item ' . $post->post_title, 'master-addons' ), esc_html__('MA Duplicator', 'master-addons' ));
		return $actions;
	}


	/*
	 * Function creates post duplicate as a draft and redirects then to the edit post screen
	 */
	public function jltma_duplicate_post_as_draft()
	{

		global $wpdb;

		if (!(isset($_GET['post']) || isset($_POST['post'])  || (isset($_REQUEST['action']) && 'jltma_duplicate' == $_REQUEST['action']))) {
			wp_die('No post to duplicate has been supplied!');
		}

		/*
		 * Nonce verification
		 * Return if nonce is not valid
		 */
		if (empty($_REQUEST['_wpnonce']) || !wp_verify_nonce($_REQUEST['_wpnonce'], 'jltma_post_duplicator_nonce')) {
			return;
		}

		/*
		 * get the original post id
		 */
		$post_id = (isset($_GET['post']) ? absint($_GET['post']) : absint($_POST['post']));
		/*
		 * and all the original post data then
		 */
		$post = get_post($post_id);

		if (!$this->user_can_clone($post)) {
			return;
		}

		/*
		 * if post data exists, create the post duplicate
		 */
		if (isset($post) && $post != null) {

			/*
			 * new post data array
			 */
			$args = array(
				'post_title'     => sprintf( __( '%s - [Duplicated #%d]', 'master-addons' ), $post->post_title, $post->ID ),
				'post_type'      => $post->post_type,
				'post_content'   => $post->post_content,
				'post_excerpt'   => $post->post_excerpt,
				'post_author'    => get_current_user_id(),
				'comment_status' => $post->comment_status,
				'ping_status'    => $post->ping_status,
				'post_name'      => $post->post_name,
				'post_parent'    => $post->post_parent,
				'post_password'  => $post->post_password,
				'post_status'    => 'draft',
				'to_ping'        => $post->to_ping,
				'menu_order'     => $post->menu_order
			);

			/*
			 * insert the post by wp_insert_post() function
			 */
			$new_post_id = wp_insert_post($args);

			/*
			 * get all current post terms ad set them to the new post draft
			 */
			$taxonomies = get_object_taxonomies($post->post_type); // returns array of taxonomy names for post type, ex array("category", "post_tag");
			foreach ($taxonomies as $taxonomy) {
				$post_terms = wp_get_object_terms($post_id, $taxonomy, array('fields' => 'slugs'));
				wp_set_object_terms($new_post_id, $post_terms, $taxonomy, false);
			}

			/*
			 * duplicate all post meta just in two SQL queries
			 */
			$post_meta_infos = $wpdb->get_results("SELECT meta_key, meta_value FROM $wpdb->postmeta WHERE post_id=$post_id");
			if (count($post_meta_infos) != 0) {
				$sql_query = "INSERT INTO $wpdb->postmeta (post_id, meta_key, meta_value) ";
				foreach ($post_meta_infos as $meta_info) {
					$meta_key = $meta_info->meta_key;
					if ($meta_key == '_wp_old_slug') continue;
					if ($meta_key == \Elementor\Core\Files\CSS\Post::META_KEY) continue;
					$meta_value = $meta_info->meta_value;
					$sql_query_sel[] = $wpdb->prepare("SELECT %d, %s, %s", $new_post_id, $meta_key, $meta_value);
				}
				$sql_query .= implode(" UNION ALL ", $sql_query_sel);
				$wpdb->query($sql_query);
			}

			/*
			 * finally, redirect to the edit post screen for the new draft
			 */
			$redirect_url = admin_url('edit.php?post_type=' . $post->post_type);
			wp_safe_redirect($redirect_url);

			exit;
		} else {
			wp_die('Post creation failed, could not find original post: ' . $post_id);
		}
	}
}

JLTMA_Extension_Post_Page_Duplicator::get_instance();