<?php
namespace Yoast\WP\Duplicate_Post;
use WP_Error;
use WP_Post;
/**
* Duplicate Post class to create copies.
*
* @since 4.0
*/
class Post_Duplicator {
/**
* Returns an array with the default option values.
*
* @return array The default options values.
*/
public function get_default_options() {
return [
'copy_title' => true,
'copy_date' => false,
'copy_status' => false,
'copy_name' => false,
'copy_excerpt' => true,
'copy_content' => true,
'copy_thumbnail' => true,
'copy_template' => true,
'copy_format' => true,
'copy_author' => false,
'copy_password' => false,
'copy_attachments' => false,
'copy_children' => false,
'copy_comments' => false,
'copy_menu_order' => true,
'title_prefix' => '',
'title_suffix' => '',
'increase_menu_order_by' => null,
'parent_id' => null,
'meta_excludelist' => [],
'taxonomies_excludelist' => [],
'use_filters' => true,
];
}
/**
* Creates a copy of a post object, accordingly to an options array.
*
* @param WP_Post $post The original post object.
* @param array $options The options overriding the default ones.
*
* @return int|WP_Error The copy ID, or a WP_Error object on failure.
*/
public function create_duplicate( WP_Post $post, array $options = [] ) {
$defaults = $this->get_default_options();
$options = \wp_parse_args( $options, $defaults );
$title = '';
$new_post_status = $post->post_status;
if ( $post->post_type !== 'attachment' ) {
$title = $this->generate_copy_title( $post, $options );
$new_post_status = $this->generate_copy_status( $post, $options );
}
$new_post_author_id = $this->generate_copy_author( $post, $options );
$menu_order = 0;
if ( $options['copy_menu_order'] ) {
$menu_order = $post->menu_order;
}
if ( ! empty( $options['increase_menu_order_by'] ) && \is_numeric( $options['increase_menu_order_by'] ) ) {
$menu_order += \intval( $options['increase_menu_order_by'] );
}
$new_post = [
'post_author' => $new_post_author_id,
'post_content' => ( $options['copy_content'] ) ? $post->post_content : '',
'post_content_filtered' => ( $options['copy_content'] ) ? $post->post_content_filtered : '',
'post_title' => $title,
'post_excerpt' => ( $options['copy_excerpt'] ) ? $post->post_excerpt : '',
'post_status' => $new_post_status,
'post_type' => $post->post_type,
'comment_status' => $post->comment_status,
'ping_status' => $post->ping_status,
'post_password' => ( $options['copy_password'] ) ? $post->post_password : '',
'post_name' => ( $options['copy_name'] ) ? $post->post_name : '',
'post_parent' => empty( $options['parent_id'] ) ? $post->post_parent : $options['parent_id'],
'menu_order' => $menu_order,
'post_mime_type' => $post->post_mime_type,
];
if ( $options['copy_date'] ) {
$new_post_date = $post->post_date;
$new_post['post_date'] = $new_post_date;
$new_post['post_date_gmt'] = \get_gmt_from_date( $new_post_date );
\add_filter( 'wp_insert_post_data', [ $this, 'set_modified' ], 1, 1 );
}
if ( $options['use_filters'] ) {
/**
* Filter new post values.
*
* @param array $new_post New post values.
* @param WP_Post $post Original post object.
*
* @return array
*/
$new_post = \apply_filters( 'duplicate_post_new_post', $new_post, $post );
}
$new_post_id = \wp_insert_post( \wp_slash( $new_post ), true );
if ( $options['copy_date'] ) {
\remove_filter( 'wp_insert_post_data', [ $this, 'set_modified' ], 1 );
}
if ( ! \is_wp_error( $new_post_id ) ) {
\delete_post_meta( $new_post_id, '_dp_original' );
\add_post_meta( $new_post_id, '_dp_original', $post->ID );
}
return $new_post_id;
}
/**
* Modifies the post data to set the modified date to now.
*
* This is needed for the Block editor when a post is copied with its date,
* so that the current publish date is shown instead of "Immediately".
*
* @param array $data The array of post data.
*
* @return array The updated array of post data.
*/
public function set_modified( $data ) {
$data['post_modified'] = \current_time( 'mysql' );
$data['post_modified_gmt'] = \current_time( 'mysql', 1 );
return $data;
}
/**
* Wraps the function to create a copy for the Rewrite & Republish feature.
*
* @param WP_Post $post The original post object.
*
* @return int|WP_Error The copy ID, or a WP_Error object on failure.
*/
public function create_duplicate_for_rewrite_and_republish( WP_Post $post ) {
$options = [
'copy_title' => true,
'copy_date' => true,
'copy_name' => false,
'copy_content' => true,
'copy_excerpt' => true,
'copy_author' => true,
'copy_menu_order' => true,
'use_filters' => false,
];
$defaults = $this->get_default_options();
$options = \wp_parse_args( $options, $defaults );
$new_post_id = $this->create_duplicate( $post, $options );
if ( ! \is_wp_error( $new_post_id ) ) {
$this->copy_post_taxonomies( $new_post_id, $post, $options );
$this->copy_post_meta_info( $new_post_id, $post, $options );
\update_post_meta( $new_post_id, '_dp_is_rewrite_republish_copy', 1 );
\update_post_meta( $post->ID, '_dp_has_rewrite_republish_copy', $new_post_id );
\update_post_meta( $new_post_id, '_dp_creation_date_gmt', \current_time( 'mysql', 1 ) );
}
return $new_post_id;
}
/**
* Copies the taxonomies of a post to another post.
*
* @param int $new_id New post ID.
* @param WP_Post $post The original post object.
* @param array $options The options array.
*
* @return void
*/
public function copy_post_taxonomies( $new_id, $post, $options ) {
// Clear default category (added by wp_insert_post).
\wp_set_object_terms( $new_id, null, 'category' );
$post_taxonomies = \get_object_taxonomies( $post->post_type );
// Several plugins just add support to post-formats but don't register post_format taxonomy.
if ( \post_type_supports( $post->post_type, 'post-formats' ) && ! \in_array( 'post_format', $post_taxonomies, true ) ) {
$post_taxonomies[] = 'post_format';
}
$taxonomies_excludelist = $options['taxonomies_excludelist'];
if ( ! \is_array( $taxonomies_excludelist ) ) {
$taxonomies_excludelist = [];
}
if ( ! $options['copy_format'] ) {
$taxonomies_excludelist[] = 'post_format';
}
if ( $options['use_filters'] ) {
/**
* Filters the taxonomy excludelist when copying a post.
*
* @param array $taxonomies_excludelist The taxonomy excludelist from the options.
*
* @return array
*/
$taxonomies_excludelist = \apply_filters( 'duplicate_post_taxonomies_excludelist_filter', $taxonomies_excludelist );
}
$post_taxonomies = \array_diff( $post_taxonomies, $taxonomies_excludelist );
foreach ( $post_taxonomies as $taxonomy ) {
$post_terms = \wp_get_object_terms( $post->ID, $taxonomy, [ 'orderby' => 'term_order' ] );
$terms = [];
$num_terms = \count( $post_terms );
for ( $i = 0; $i < $num_terms; $i++ ) {
$terms[] = $post_terms[ $i ]->slug;
}
\wp_set_object_terms( $new_id, $terms, $taxonomy );
}
}
/**
* Copies the meta information of a post to another post.
*
* @param int $new_id The new post ID.
* @param WP_Post $post The original post object.
* @param array $options The options array.
*
* @return void
*/
public function copy_post_meta_info( $new_id, $post, $options ) {
$post_meta_keys = \get_post_custom_keys( $post->ID );
if ( empty( $post_meta_keys ) ) {
return;
}
$meta_excludelist = $options['meta_excludelist'];
if ( ! \is_array( $meta_excludelist ) ) {
$meta_excludelist = [];
}
$meta_excludelist = \array_merge( $meta_excludelist, Utils::get_default_filtered_meta_names() );
if ( ! $options['copy_template'] ) {
$meta_excludelist[] = '_wp_page_template';
}
if ( ! $options['copy_thumbnail'] ) {
$meta_excludelist[] = '_thumbnail_id';
}
if ( $options['use_filters'] ) {
/**
* Filters the meta fields excludelist when copying a post.
*
* @param array $meta_excludelist The meta fields excludelist from the options.
*
* @return array
*/
$meta_excludelist = \apply_filters( 'duplicate_post_excludelist_filter', $meta_excludelist );
}
$meta_excludelist_string = '(' . \implode( ')|(', $meta_excludelist ) . ')';
if ( \strpos( $meta_excludelist_string, '*' ) !== false ) {
$meta_excludelist_string = \str_replace( [ '*' ], [ '[a-zA-Z0-9_]*' ], $meta_excludelist_string );
$meta_keys = [];
foreach ( $post_meta_keys as $meta_key ) {
if ( ! \preg_match( '#^' . $meta_excludelist_string . '$#', $meta_key ) ) {
$meta_keys[] = $meta_key;
}
}
}
else {
$meta_keys = \array_diff( $post_meta_keys, $meta_excludelist );
}
if ( $options['use_filters'] ) {
/**
* Filters the list of meta fields names when copying a post.
*
* @param array $meta_keys The list of meta fields name, with the ones in the excludelist already removed.
*
* @return array
*/
$meta_keys = \apply_filters( 'duplicate_post_meta_keys_filter', $meta_keys );
}
foreach ( $meta_keys as $meta_key ) {
$meta_values = \get_post_custom_values( $meta_key, $post->ID );
// Clear existing meta data so that add_post_meta() works properly with non-unique keys.
\delete_post_meta( $new_id, $meta_key );
foreach ( $meta_values as $meta_value ) {
$meta_value = \maybe_unserialize( $meta_value );
\add_post_meta( $new_id, $meta_key, Utils::recursively_slash_strings( $meta_value ) );
}
}
}
/**
* Generates and returns the title for the copy.
*
* @param WP_Post $post The original post object.
* @param array $options The options array.
*
* @return string The calculated title for the copy.
*/
public function generate_copy_title( WP_Post $post, array $options ) {
$prefix = \sanitize_text_field( $options['title_prefix'] );
$suffix = \sanitize_text_field( $options['title_suffix'] );
if ( $options['copy_title'] ) {
$title = $post->post_title;
if ( ! empty( $prefix ) ) {
$prefix .= ' ';
}
if ( ! empty( $suffix ) ) {
$suffix = ' ' . $suffix;
}
}
else {
$title = '';
}
return \trim( $prefix . $title . $suffix );
}
/**
* Generates and returns the status for the copy.
*
* @param WP_Post $post The original post object.
* @param array $options The options array.
*
* @return string The calculated status for the copy.
*/
public function generate_copy_status( WP_Post $post, array $options ) {
$new_post_status = 'draft';
if ( $options['copy_status'] ) {
$new_post_status = $post->post_status;
if ( $new_post_status === 'publish' || $new_post_status === 'future' ) {
// Check if the user has the right capability.
if ( \is_post_type_hierarchical( $post->post_type ) ) {
if ( ! \current_user_can( 'publish_pages' ) ) {
$new_post_status = 'pending';
}
}
elseif ( ! \current_user_can( 'publish_posts' ) ) {
$new_post_status = 'pending';
}
}
}
return $new_post_status;
}
/**
* Generates and returns the author ID for the copy.
*
* @param WP_Post $post The original post object.
* @param array $options The options array.
*
* @return int|string The calculated author ID for the copy.
*/
public function generate_copy_author( WP_Post $post, array $options ) {
$new_post_author = \wp_get_current_user();
$new_post_author_id = $new_post_author->ID;
if ( $options['copy_author'] ) {
// Check if the user has the right capability.
if ( \is_post_type_hierarchical( $post->post_type ) ) {
if ( \current_user_can( 'edit_others_pages' ) ) {
$new_post_author_id = $post->post_author;
}
}
elseif ( \current_user_can( 'edit_others_posts' ) ) {
$new_post_author_id = $post->post_author;
}
}
return $new_post_author_id;
}
}
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