<?php

/**
 * A set of functions for processing and applying the custom permalink to posts
 */
class Permalink_Manager_URI_Functions_Post {

	public function __construct() {
		add_action( 'admin_init', array( $this, 'admin_init' ), 99, 3 );

		add_filter( '_get_page_link', array( $this, 'custom_post_permalinks' ), 99, 2 );
		add_filter( 'page_link', array( $this, 'custom_post_permalinks' ), 99, 2 );
		add_filter( 'post_link', array( $this, 'custom_post_permalinks' ), 99, 2 );
		add_filter( 'post_type_link', array( $this, 'custom_post_permalinks' ), 99, 2 );
		add_filter( 'attachment_link', array( $this, 'custom_post_permalinks' ), 99, 2 );

		add_filter( 'permalink_manager_uris', array( $this, 'exclude_homepage' ), 99 );

		add_filter( 'url_to_postid', array( $this, 'url_to_postid' ), 999 );

		add_filter( 'get_sample_permalink_html', array( $this, 'edit_uri_box' ), 20, 5 );

		add_action( 'save_post', array( $this, 'update_post_hook' ), 99, 1 );
		add_action( 'edit_attachment', array( $this, 'update_post_hook' ), 99, 1 );
		add_action( 'wp_insert_post', array( $this, 'insert_post_hook' ), 99, 1 );
		add_action( 'add_attachment', array( $this, 'insert_post_hook' ), 99, 1 );
		add_action( 'wp_trash_post', array( $this, 'remove_post_hook' ), 100, 1 );
		add_action( 'delete_post', array( $this, 'remove_post_hook' ), 100, 1 );
	}

	/**
	 * Add "Custom Permalink" input field to "Quick Edit" form
	 */
	function admin_init() {
		$post_types = Permalink_Manager_Helper_Functions::get_post_types_array();

		// Add "URI Editor" to "Quick Edit" for all post_types
		foreach ( $post_types as $post_type => $label ) {
			add_filter( "manage_{$post_type}_posts_columns", array( $this, 'quick_edit_column' ) );
			add_filter( "manage_{$post_type}_posts_custom_column", array( $this, 'quick_edit_column_content' ), 10, 2 );
		}
	}

	/**
	 * Apply the custom permalinks to the posts
	 *
	 * @param string $permalink
	 * @param WP_Post|int $post
	 *
	 * @return string
	 */
	static function custom_post_permalinks( $permalink, $post ) {
		global $permalink_manager_uris, $permalink_manager_options, $permalink_manager_ignore_permalink_filters;

		// Do not filter permalinks in Customizer
		if ( function_exists( 'is_customize_preview' ) && is_customize_preview() ) {
			return $permalink;
		}

		// Do not filter in WPML String Editor
		if ( ! empty( $_REQUEST['icl_ajx_action'] ) && $_REQUEST['icl_ajx_action'] == 'icl_st_save_translation' ) {
			return $permalink;
		}

		// WPML (prevent duplicated posts)
		if ( ! empty( $_REQUEST['trid'] ) && ! empty( $_REQUEST['skip_sitepress_actions'] ) ) {
			return $permalink;
		}

		// Do not run when metaboxes are loaded with Gutenberg
		if ( ! empty( $_REQUEST['meta-box-loader'] ) && empty( $_POST['custom_uri'] ) ) {
			return $permalink;
		}

		// Do not filter if $permalink_manager_ignore_permalink_filters global is set
		if ( ! empty( $permalink_manager_ignore_permalink_filters ) ) {
			return $permalink;
		}

		$post = ( is_integer( $post ) ) ? get_post( $post ) : $post;

		// Do not run if post object is invalid
		if ( empty( $post ) || empty( $post->ID ) || empty( $post->post_type ) ) {
			return $permalink;
		}

		// Start with homepage URL
		$home_url = Permalink_Manager_Helper_Functions::get_permalink_base( $post );

		// Check if the post is excluded
		if ( ! empty( $post->post_type ) && Permalink_Manager_Helper_Functions::is_post_excluded( $post ) && $post->post_type !== 'attachment' ) {
			return $permalink;
		}

		// 2A. Do not change permalink of frontpage
		if ( Permalink_Manager_Helper_Functions::is_front_page( $post->ID ) ) {
			return $permalink;
		} // 2B. Do not change permalink for drafts and future posts (+ remove trailing slash from them)
		else if ( in_array( $post->post_status, array( 'draft', 'pending', 'auto-draft', 'future' ) ) ) {
			return $permalink;
		}

		// 3. Save the old permalink to separate variable
		$old_permalink = $permalink;

		// 4. Filter only the posts with custom permalink assigned
		if ( isset( $permalink_manager_uris[ $post->ID ] ) ) {
			// Encode URI?
			if ( ! empty( $permalink_manager_options['general']['decode_uris'] ) ) {
				$permalink = "{$home_url}/" . rawurldecode( "/{$permalink_manager_uris[$post->ID]}" );
			} else {
				$permalink = "{$home_url}/" . Permalink_Manager_Helper_Functions::encode_uri( "{$permalink_manager_uris[$post->ID]}" );
			}
		} else if ( $post->post_type == 'attachment' && $post->post_parent > 0 && $post->post_parent != $post->ID && ! empty( $permalink_manager_uris[ $post->post_parent ] ) ) {
			$permalink = "{$home_url}/{$permalink_manager_uris[$post->post_parent]}/attachment/{$post->post_name}";
		}

		return apply_filters( 'permalink_manager_filter_final_post_permalink', $permalink, $post, $old_permalink );
	}

	/**
	 * Check if the provided slug is unique and then update it with SQL query.
	 *
	 * @param string $slug
	 * @param int $id
	 * @param bool $preview_mode
	 *
	 * @return string
	 */
	static function update_slug_by_id( $slug, $id, $preview_mode = false ) {
		global $wpdb;

		// Update slug and make it unique
		$slug = ( empty( $slug ) ) ? get_the_title( $id ) : $slug;
		$slug = sanitize_title( $slug );

		$new_slug = wp_unique_post_slug( $slug, $id, get_post_status( $id ), get_post_type( $id ), 0 );

		if ( ! $preview_mode ) {
			$wpdb->query( $wpdb->prepare( "UPDATE {$wpdb->posts} SET post_name = %s WHERE ID = %d", $new_slug, $id ) );
			clean_post_cache( $id );
		}

		return $new_slug;
	}

	/**
	 * Get the currently used custom permalink (or default/empty URI)
	 *
	 * @param int $post_id
	 * @param bool $native_uri
	 * @param bool $no_fallback
	 *
	 * @return string
	 */
	public static function get_post_uri( $post_id, $native_uri = false, $no_fallback = false ) {
		global $permalink_manager_uris;

		// Check if input is post object
		$post_id = ( isset( $post_id->ID ) ) ? $post_id->ID : $post_id;

		if ( ! empty( $permalink_manager_uris[ $post_id ] ) ) {
			$final_uri = $permalink_manager_uris[ $post_id ];
		} else if ( ! $no_fallback ) {
			$final_uri = self::get_default_post_uri( $post_id, $native_uri );
		} else {
			$final_uri = '';
		}

		return $final_uri;
	}

	/**
	 * Get the default custom permalink (not overwritten by the user) or native permalink (unfiltered)
	 *
	 * @param WP_Post|int $post
	 * @param bool $native_uri
	 * @param bool $check_if_disabled
	 *
	 * @return string
	 */
	public static function get_default_post_uri( $post, $native_uri = false, $check_if_disabled = false ) {
		global $permalink_manager_options, $permalink_manager_uris, $permalink_manager_permastructs, $wp_post_types, $icl_adjust_id_url_filter_off;

		// Disable WPML adjust ID filter
		$icl_adjust_id_url_filter_off = true;

		// Load all bases & post
		$post = is_object( $post ) ? $post : get_post( $post );

		// Check if post ID is defined (and front page permalinks should be empty)
		if ( empty( $post->ID ) || Permalink_Manager_Helper_Functions::is_front_page( $post->ID ) ) {
			return '';
		}

		$post_type = $post->post_type;
		$post_name = ( empty( $post->post_name ) ) ? Permalink_Manager_Helper_Functions::sanitize_title( $post->post_title ) : $post->post_name;

		// 1A. Check if post type is allowed
		if ( $check_if_disabled && Permalink_Manager_Helper_Functions::is_post_type_disabled( $post_type ) ) {
			return '';
		}

		// 1A. Get the native permastructure
		if ( $post_type == 'attachment' ) {
			$parent_page = ( $post->post_parent > 0 && $post->post_parent != $post->ID ) ? get_post( $post->post_parent ) : false;

			if ( ! empty( $parent_page->ID ) ) {
				$parent_page_uri = ( ! empty( $permalink_manager_uris[ $parent_page->ID ] ) ) ? $permalink_manager_uris[ $parent_page->ID ] : get_page_uri( $parent_page->ID );
			} else {
				$parent_page_uri = "";
			}

			$native_permastructure = ( $parent_page ) ? trim( $parent_page_uri, "/" ) . "/attachment" : "";
		} else {
			$native_permastructure = Permalink_Manager_Helper_Functions::get_default_permastruct( $post_type );
		}

		// 1B. Get the permastructure
		if ( $native_uri ) {
			$permastructure = $native_permastructure;
		} else {
			$permastructure = ( ! empty( $permalink_manager_permastructs['post_types'][ $post_type ] ) ) ? $permalink_manager_permastructs['post_types'][ $post_type ] : $native_permastructure;
			$permastructure = apply_filters( 'permalink_manager_filter_permastructure', $permastructure, $post );
		}

		// 1C. Set the permastructure
		$default_base = ( ! empty( $permastructure ) ) ? trim( $permastructure, '/' ) : "";

		// 2A. Get the date
		$date      = explode( " ", date( 'Y m d H i s', strtotime( $post->post_date ) ) );
		$monthname = sanitize_title( date_i18n( 'F', strtotime( $post->post_date ) ) );

		// 2B. Get the author (if needed)
		$author = '';
		if ( strpos( $default_base, '%author%' ) !== false ) {
			$authordata = get_userdata( $post->post_author );
			$author     = $authordata->user_nicename;
		}

		// 2C. Get the post type slug
		if ( ! empty( $wp_post_types[ $post_type ] ) ) {
			if ( ! empty( $wp_post_types[ $post_type ]->rewrite['slug'] ) ) {
				$post_type_slug = $wp_post_types[ $post_type ]->rewrite['slug'];
			} else if ( is_string( $wp_post_types[ $post_type ]->rewrite ) ) {
				$post_type_slug = $wp_post_types[ $post_type ]->rewrite;
			}
		}

		$post_type_slug = ( ! empty( $post_type_slug ) ) ? $post_type_slug : $post_type;
		$post_type_slug = apply_filters( 'permalink_manager_filter_post_type_slug', $post_type_slug, $post, $post_type );
		$post_type_slug = preg_replace( '/(%([^%]+)%\/?)/', '', $post_type_slug );

		// 3B. Get the full slug
		$post_name        = Permalink_Manager_Helper_Functions::remove_slashes( $post_name );
		$custom_slug      = $full_custom_slug = Permalink_Manager_Helper_Functions::force_custom_slugs( $post_name, $post );
		$post_title_slug  = Permalink_Manager_Helper_Functions::force_custom_slugs( $post_name, $post, true, 1 );
		$full_native_slug = $post_name;

		// 3A. Fix for hierarchical CPT (start)
		// $full_slug = (is_post_type_hierarchical($post_type)) ? get_page_uri($post) : $post_name;
		if ( $post->ancestors && is_post_type_hierarchical( $post_type ) ) {
			foreach ( $post->ancestors as $parent ) {
				$parent = get_post( $parent );
				if ( $parent && $parent->post_name ) {
					$full_native_slug = $parent->post_name . '/' . $full_native_slug;
					$full_custom_slug = Permalink_Manager_Helper_Functions::force_custom_slugs( $parent->post_name, $parent ) . '/' . $full_custom_slug;
				}
			}
		}

		// 3B. Allow filter the default slug (only custom permalinks)
		if ( ! $native_uri ) {
			$full_slug = apply_filters( 'permalink_manager_filter_default_post_slug', $full_custom_slug, $post, $post_name );
		} else {
			$full_slug = $full_native_slug;
		}

		$post_type_tag = Permalink_Manager_Helper_Functions::get_post_tag( $post_type );

		// 3C. Get the standard tags and replace them with their values
		$tags              = array( '%year%', '%monthnum%', '%monthname%', '%day%', '%hour%', '%minute%', '%second%', '%post_id%', '%author%', '%post_type%' );
		$tags_replacements = array( $date[0], $date[1], $monthname, $date[2], $date[3], $date[4], $date[5], $post->ID, $author, $post_type_slug );
		$default_uri       = str_replace( $tags, $tags_replacements, $default_base );

		// 3D. Get the slug tags
		$slug_tags             = array( $post_type_tag, "%postname%", "%postname_flat%", "%pagename_flat%", "%{$post_type}_flat%", "%native_slug%", '%native_title%' );
		$slug_tags_replacement = array( $full_slug, $full_slug, $custom_slug, $custom_slug, $custom_slug, $full_native_slug, $post_title_slug );

		// 3E. Check if any post tag is present in custom permastructure
		$do_not_append_slug = ( ! empty( $permalink_manager_options['permastructure-settings']['do_not_append_slug']['post_types'][ $post_type ] ) ) ? true : false;
		$do_not_append_slug = apply_filters( "permalink_manager_do_not_append_slug", $do_not_append_slug, $post_type, $post );
		if ( ! $do_not_append_slug ) {
			foreach ( $slug_tags as $tag ) {
				if ( strpos( $default_uri, $tag ) !== false ) {
					$do_not_append_slug = true;
					break;
				}
			}
		}

		// 3F. Replace the post tags with slugs or append the slug if no post tag is defined
		if ( ! empty( $do_not_append_slug ) ) {
			$default_uri = str_replace( $slug_tags, $slug_tags_replacement, $default_uri );
		} else {
			$default_uri .= "/{$full_slug}";
		}

		// 4. Replace taxonomies
		$taxonomies = get_taxonomies();

		if ( $taxonomies ) {
			foreach ( $taxonomies as $taxonomy ) {
				// 0. Check if taxonomy tag is present
				if ( strpos( $default_uri, "%{$taxonomy}" ) === false ) {
					continue;
				}

				// 1. Get terms assigned to this post
				$terms = wp_get_object_terms( $post->ID, $taxonomy );

				// 2. Sort the terms
				if ( ! empty( $terms ) ) {
					$terms = wp_list_sort( $terms, array(
						'parent'  => 'DESC',
						'term_id' => 'ASC',
					) );
				}

				// 3A. Try to use Yoast SEO Primary Term
				$replacement_term = Permalink_Manager_Helper_Functions::get_primary_term( $post->ID, $taxonomy, false );

				// 3B. Get the first assigned term to this taxonomy
				if ( empty( $replacement_term ) ) {
					$replacement_term = ( ! is_wp_error( $terms ) && ! empty( $terms ) && is_object( $terms[0] ) ) ? Permalink_Manager_Helper_Functions::get_lowest_element( $terms[0], $terms ) : '';
					$replacement_term = apply_filters( 'permalink_manager_filter_post_terms', $replacement_term, $post, $terms, $taxonomy, $native_uri );
				}

				// 4A. Custom URI as term base
				if ( ! empty( $replacement_term->term_id ) && strpos( $default_uri, "%{$taxonomy}_custom_uri%" ) !== false && ! empty( $permalink_manager_uris["tax-{$replacement_term->term_id}"] ) ) {
					$mode = 1;
				} // 4B. Hierarchical term base
				else if ( ! empty( $replacement_term->term_id ) && strpos( $default_uri, "%{$taxonomy}_flat%" ) === false && strpos( $default_uri, "%{$taxonomy}_top%" ) === false && is_taxonomy_hierarchical( $taxonomy ) ) {
					$mode = 2;
				} // 4C. Force flat/non-hierarchical term base - get the highest level term (if %taxonomy_top% tag is used)
				else if ( strpos( $default_uri, "%{$taxonomy}_top%" ) !== false ) {
					$mode = 3;
				} // 4D. Force flat/non-hierarchical term base - get the lowest level term (if %taxonomy_flat% tag is used)
				else {
					$mode = 4;
				}

				// Get the replacement slug (custom + native)
				$replacement        = Permalink_Manager_Helper_Functions::get_term_full_slug( $replacement_term, $terms, $mode, $native_uri );
				$native_replacement = Permalink_Manager_Helper_Functions::get_term_full_slug( $replacement_term, $terms, $mode, true );

				// Trim slashes
				$replacement        = trim( $replacement, '/' );
				$native_replacement = trim( $native_replacement, '/' );

				// Filter final category slug
				$replacement = apply_filters( 'permalink_manager_filter_term_slug', $replacement, $replacement_term, $post, $terms, $taxonomy, $native_uri );

				// 4. Do the replacement
				$default_uri = ( ! empty( $replacement ) ) ? str_replace( array( "%{$taxonomy}%", "%{$taxonomy}_flat%", "%{$taxonomy}_custom_uri%", "%{$taxonomy}_top%" ), $replacement, $default_uri ) : $default_uri;
				$default_uri = ( ! empty( $native_replacement ) ) ? str_replace( "%{$taxonomy}_native_slug%", $native_replacement, $default_uri ) : $default_uri;
			}
		}

		// Enable WPML adjust ID filter
		$icl_adjust_id_url_filter_off = false;

		return apply_filters( 'permalink_manager_filter_default_post_uri', $default_uri, $post->post_name, $post, $post_name, $native_uri );
	}

	/**
	 * Exclude the page selected as "Front page"
	 *
	 * @param array $uris
	 *
	 * @return array
	 */
	function exclude_homepage( $uris ) {
		// Find the homepage URI
		$homepage_id = get_option( 'page_on_front' );

		if ( is_array( $uris ) && ! empty( $uris[ $homepage_id ] ) ) {
			unset( $uris[ $homepage_id ] );
		}

		return $uris;
	}

	/**
	 * Support url_to_postid() function
	 *
	 * @param string $url
	 *
	 * @return string
	 */
	public function url_to_postid( $url ) {
		global $pm_query;

		// Filter only defined URLs
		if ( empty( $url ) ) {
			return $url;
		}

		// Make sure that $pm_query global is not changed
		$old_pm_query = $pm_query;
		$post         = Permalink_Manager_Core_Functions::detect_post( array(), $url, true );
		$pm_query     = $old_pm_query;

		if ( ! empty( $post->ID ) ) {
			$native_url = "/?p={$post->ID}";
		}

		return ( ! empty( $native_url ) ) ? $native_url : $url;
	}

	/**
	 * Get array with all post items based on the user-selected settings in the "Bulk tools" form
	 *
	 * @return array|false
	 */
	public static function get_items() {
		global $wpdb, $permalink_manager_options;

		// Check if post types & statuses are not empty
		if ( empty( $_POST['post_types'] ) || empty( $_POST['post_statuses'] ) ) {
			return false;
		}

		$post_types_array    = array_map( 'sanitize_key', $_POST['post_types'] );
		$post_statuses_array = array_map( 'sanitize_key', $_POST['post_statuses'] );
		$post_types          = implode( "', '", $post_types_array );
		$post_statuses       = implode( "', '", $post_statuses_array );

		// Filter the posts by IDs
		$where = '';
		if ( ! empty( $_POST['ids'] ) ) {
			// Remove whitespaces and prepare array with IDs and/or ranges
			$ids = esc_sql( preg_replace( '/\s*/m', '', $_POST['ids'] ) );
			preg_match_all( "/([\d]+(?:-?[\d]+)?)/x", $ids, $groups );

			// Prepare the extra ID filters
			$where .= "AND (";
			foreach ( $groups[0] as $group ) {
				$where .= ( $group == reset( $groups[0] ) ) ? "" : " OR ";
				// A. Single number
				if ( is_numeric( $group ) ) {
					$where .= "(ID = {$group})";
				} // B. Range
				else if ( substr_count( $group, '-' ) ) {
					$range_edges = explode( "-", $group );
					$where       .= "(ID BETWEEN {$range_edges[0]} AND {$range_edges[1]})";
				}
			}
			$where .= ")";
		}

		// Get excluded items
		$excluded_posts = (array) apply_filters( 'permalink_manager_excluded_post_ids', array() );
		if ( ! empty( $excluded_posts ) ) {
			$where .= sprintf( " AND ID NOT IN ('%s') ", implode( "', '", $excluded_posts ) );
		}

		// Support for attachments
		$attachment_support = ( in_array( 'attachment', $post_types_array ) ) ? " OR (post_type = 'attachment')" : "";

		// Check the auto-update mode
		// A. Allow only user-approved posts
		if ( ! empty( $permalink_manager_options["general"]["auto_update_uris"] ) && $permalink_manager_options["general"]["auto_update_uris"] == 2 ) {
			$where .= " AND meta_value IN (1, -1) ";
		} // B. Allow all posts not disabled by the user
		else {
			$where .= " AND (meta_value IS NULL OR meta_value IN (1, -1)) ";
		}

		// Get the rows before they are altered
		return $wpdb->get_results( "SELECT post_type, post_title, post_name, ID FROM {$wpdb->posts} AS p LEFT JOIN {$wpdb->postmeta} AS pm ON pm.post_ID = p.ID AND pm.meta_key = 'auto_update_uri' WHERE ((post_status IN ('{$post_statuses}') AND post_type IN ('{$post_types}')){$attachment_support}) {$where}", ARRAY_A );
	}

	/**
	 * Process the permalinks/slugs "Find & replace" & "Regenerate/rest" tool
	 *
	 * @param array $chunk
	 * @param string $mode
	 * @param string $operation
	 * @param string $old_string
	 * @param string $new_string
	 * @param bool $preview_mode
	 *
	 * @return array|false
	 */
	public static function bulk_process_items( $chunk = null, $mode = '', $operation = '', $old_string = '', $new_string = '', $preview_mode = false ) {
		// Reset variables
		$updated_slugs_count = 0;
		$updated_array       = array();

		// Get the rows before they are altered
		$posts_to_update = ( ! empty( $chunk ) ) ? $chunk : self::get_items();

		if ( empty( $operation ) ) {
			return false;
		}

		// Now if the array is not empty use IDs from each subarray as a key
		if ( $posts_to_update ) {
			foreach ( $posts_to_update as $row ) {
				// Get default & native URL
				$native_uri  = self::get_default_post_uri( $row['ID'], true );
				$default_uri = self::get_default_post_uri( $row['ID'] );
				$old_uri     = Permalink_Manager_URI_Functions::get_single_uri( $row['ID'], true, false );

				$old_post_name = $row['post_name'];

				if ( $operation == 'regenerate' ) {
					if ( $mode == 'slugs' ) {
						$new_uri       = $old_uri;
						$new_post_name = Permalink_Manager_Helper_Functions::sanitize_title( $row['post_title'] );
					} else if ( $mode == 'native' ) {
						$new_uri       = $native_uri;
						$new_post_name = $old_post_name;
					} else {
						$new_uri       = $default_uri;
						$new_post_name = $old_post_name;
					}
				} else {
					// Do replacement on slugs (non-REGEX)
					if ( preg_match( "/^\/.+\/[a-z]*$/i", $old_string ) ) {
						$regex   = stripslashes( trim( sanitize_text_field( $_POST['old_string'] ), "/" ) );
						$regex   = preg_quote( $regex, '~' );
						$pattern = "~{$regex}~";

						$new_post_name = ( $mode == 'slugs' ) ? preg_replace( $pattern, $new_string, $old_post_name ) : $old_post_name;
						$new_uri       = ( $mode != 'slugs' ) ? preg_replace( $pattern, $new_string, $old_uri ) : $old_uri;
					} else {
						$new_post_name = ( $mode == 'slugs' ) ? str_replace( $old_string, $new_string, $old_post_name ) : $old_post_name; // Post name is changed only in first mode
						$new_uri       = ( $mode != 'slugs' ) ? str_replace( $old_string, $new_string, $old_uri ) : $old_uri;
					}
				}

				// Check if native slug should be changed
				if ( $mode == 'slugs' && $old_post_name !== $new_post_name ) {
					$new_post_name = self::update_slug_by_id( $new_post_name, $row['ID'], $preview_mode );
				}

				$new_uri = apply_filters( 'permalink_manager_pre_update_post_uri', $new_uri, $row['ID'], $old_uri, $native_uri, $default_uri );

				if ( ! ( empty( $new_uri ) ) && ( $old_uri !== $new_uri ) || ( $old_post_name !== $new_post_name ) ) {
					if ( ! $preview_mode && ( $old_uri !== $new_uri ) ) {
						Permalink_Manager_URI_Functions::save_single_uri( $row['ID'], $new_uri, false, false );
						do_action( 'permalink_manager_updated_post_uri', $row['ID'], $new_uri, $old_uri, $native_uri, $default_uri );
					}

					$updated_array[] = array( 'item_title' => $row['post_title'], 'ID' => $row['ID'], 'old_uri' => $old_uri, 'new_uri' => $new_uri, 'old_slug' => $old_post_name, 'new_slug' => $new_post_name );
					$updated_slugs_count ++;
				}
			}

			// Save all custom permalinks
			if ( ! $preview_mode ) {
				Permalink_Manager_URI_Functions::save_all_uris();
			}

			$output = array( 'updated' => $updated_array, 'updated_count' => $updated_slugs_count );
			wp_reset_postdata();
		}

		return ( ! empty( $output ) ) ? $output : false;
	}

	/**
	 * Save the custom permalinks in "Bulk URI Editor" tool
	 *
	 * @return array|false
	 */
	static public function update_all_permalinks() {
		// Setup needed variables
		$updated_slugs_count = 0;
		$updated_array       = array();

		$new_uris = isset( $_POST['uri'] ) ? $_POST['uri'] : array();

		// Double check if the slugs and ids are stored in arrays
		if ( ! is_array( $new_uris ) ) {
			$new_uris = explode( ',', $new_uris );
		}

		if ( ! empty( $new_uris ) ) {
			foreach ( $new_uris as $id => $new_uri ) {
				// Prepare variables
				$this_post = get_post( $id );
				$is_draft  = ( ! empty( $this_post->post_status ) && $this_post->post_status == 'draft' ) ? true : false;

				// Get default & native URL
				$native_uri  = self::get_default_post_uri( $this_post, true );
				$default_uri = ( $is_draft ) ? '' : self::get_default_post_uri( $this_post );
				$old_uri     = Permalink_Manager_URI_Functions::get_single_uri( $id, false, true );

				// Process new values - empty entries will be treated as default values
				$new_uri = Permalink_Manager_Helper_Functions::sanitize_title( $new_uri );
				$new_uri = ( ! empty( $new_uri ) ) ? trim( $new_uri, "/" ) : $default_uri;

				if ( $new_uri != $old_uri ) {
					Permalink_Manager_URI_Functions::save_single_uri( $id, $new_uri, false, false );
					$updated_array[] = array( 'item_title' => get_the_title( $id ), 'ID' => $id, 'old_uri' => $old_uri, 'new_uri' => $new_uri );
					$updated_slugs_count ++;

					do_action( 'permalink_manager_updated_post_uri', $id, $new_uri, $old_uri, $native_uri, $default_uri );
				}
			}

			// Save all custom permalinks
			Permalink_Manager_URI_Functions::save_all_uris();

			$output = array( 'updated' => $updated_array, 'updated_count' => $updated_slugs_count );
		}

		return ( ! empty( $output ) ) ? $output : false;
	}

	/**
	 * Allow to edit URIs from "Edit Post" admin pages
	 *
	 * @param string $html
	 * @param int $id
	 * @param string $new_title
	 * @param string $new_slug
	 * @param WP_Post $post
	 *
	 * @return string
	 */
	function edit_uri_box( $html, $id, $new_title, $new_slug, $post ) {
		// Detect auto drafts
		$autosave = ( ! empty( $new_title ) && empty( $new_slug ) ) ? true : false;

		// Check if the post is excluded
		if ( empty( $post->post_type ) || Permalink_Manager_Helper_Functions::is_post_excluded( $post, true ) ) {
			return $html;
		}

		// Stop the hook (if needed)
		$show_uri_editor = apply_filters( "permalink_manager_show_uri_editor_post", true, $post, $post->post_type );
		if ( ! $show_uri_editor ) {
			return $html;
		}

		// Make sure that home URL ends with slash
		$home_url = Permalink_Manager_Helper_Functions::get_permalink_base( $post );

		// A. Display original permalink on front-page editor
		if ( Permalink_Manager_Helper_Functions::is_front_page( $id ) ) {
			preg_match( '/href="([^"]+)"/mi', $html, $matches );
			$sample_permalink = ( ! empty( $matches[1] ) ) ? $matches[1] : "";
		} else {
			// B. Do not change anything if post is not saved yet (display sample permalink instead)
			if ( $autosave || empty( $post->post_status ) ) {
				$sample_permalink_uri = self::get_default_post_uri( $id );
			} // C. Display custom URI if set
			else {
				$sample_permalink_uri = Permalink_Manager_URI_Functions::get_single_uri( $post, true );
			}

			// Decode URI & allow to filter it
			$sample_permalink_uri = apply_filters( 'permalink_manager_filter_post_sample_uri', rawurldecode( $sample_permalink_uri ), $post );

			// Prepare the sample & default permalink
			$sample_permalink = sprintf( "%s/<span class=\"editable\">%s</span>", $home_url, str_replace( "//", "/", $sample_permalink_uri ) );
		}

		$sample_permalink_html = sprintf( "<span id=\"sample-permalink\"><span class=\"sample-permalink-span\"><a id=\"sample-permalink\" href=\"%s\">%s</a></span></span>&nbsp;", strip_tags( $sample_permalink ), $sample_permalink );

		// 1. Overwrite the sample permalink
		if ( preg_match( '/(<span id="sample-permalink"><a.*<\/a><\/span>)/m', $html ) ) {
			$new_html = preg_replace( '/(<span id="sample-permalink"><a.*<\/a><\/span>)/m', $sample_permalink_html, $html );
		} else if ( preg_match( '/(<a id="sample-permalink"[^<]*>.*<\/a>)/m', $html ) ) {
			$new_html = preg_replace( '/(<a id="sample-permalink"[^<]*>.*<\/a>)/m', $sample_permalink_html, $html );
		} else {
			$new_html = $html;
		}

		// 2. Append the Permalink Editor
		$new_html .= ( ! $autosave ) ? Permalink_Manager_UI_Elements::display_uri_box( $post ) : "";

		// 3. Hide the "Edit" slug button
		$new_html = str_replace( 'edit-slug button', 'edit-slug button hidden', $new_html );

		// 4. Append hidden field with native slug
		$new_html .= ( ! empty( $post->post_name ) && strpos( $new_html, 'editable-post-name-full' ) === false ) ? "<span id=\"editable-post-name-full\">{$post->post_name}</span>" : "";

		return $new_html;
	}

	/**
	 * Add "Current URI" input field to "Quick Edit" form
	 *
	 * @param array $columns
	 *
	 * @return array mixed
	 */
	function quick_edit_column( $columns ) {
		global $current_screen;

		// Get post type
		$post_type = ( ! empty( $current_screen->post_type ) ) ? $current_screen->post_type : false;

		// Check if post type is disabled
		if ( $post_type && Permalink_Manager_Helper_Functions::is_post_type_disabled( $post_type ) ) {
			return $columns;
		}

		return ( is_array( $columns ) ) ? array_merge( $columns, array( 'permalink-manager-col' => __( 'Custom permalink', 'permalink-manager' ) ) ) : $columns;
	}

	/**
	 * Display the URI of the current post in the "Custom Permalink" column
	 *
	 * @param string $column_name The name of the column to display. In this case, we named our column permalink-manager-col.
	 * @param int $post_id The ID of the term.
	 */
	function quick_edit_column_content( $column_name, $post_id ) {
		global $permalink_manager_uris, $permalink_manager_options;

		if ( $column_name == 'permalink-manager-col' ) {
			$exclude_drafts = ( isset( $permalink_manager_options['general']['ignore_drafts'] ) ) ? $permalink_manager_options['general']['ignore_drafts'] : false;
			$is_draft       = ( get_post_status( $post_id ) == 'draft' ) ? true : false;

			// A. Disable the 'Quick Edit' form for draft posts if 'Exclude drafts' option is turned on
			if ( $exclude_drafts && $is_draft ) {
				$disabled = 1;
			} // B. Get auto-update settings
			else {
				$auto_update_val = get_post_meta( $post_id, 'auto_update_uri', true );
				$disabled        = ( ! empty( $auto_update_val ) ) ? $auto_update_val : $permalink_manager_options['general']['auto_update_uris'];
			}

			$uri = ( ! empty( $permalink_manager_uris[ $post_id ] ) ) ? rawurldecode( $permalink_manager_uris[ $post_id ] ) : self::get_post_uri( $post_id, true, $is_draft );
			printf( '<span class="permalink-manager-col-uri" data-disabled="%s">%s</span>', intval( $disabled ), $uri );
		}
	}

	/**
	 * Save the custom permalink
	 *
	 * @param int|WP_Post $post
	 * @param string $new_uri
	 * @param bool $is_new_post
	 * @param int|bool $auto_update_mode
	 *
	 * @return bool
	 */
	static function save_uri( $post, $new_uri = '', $is_new_post = false, $auto_update_mode = false ) {
		global $permalink_manager_options;

		// Do not do anything if post is auto-saved
		if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
			return false;
		}

		// Get the post object
		if ( is_numeric( $post ) ) {
			$post_object = get_post( $post );
		} else if ( is_a( $post, 'WP_Post' ) ) {
			$post_object = $post;
		} else {
			return false;
		}

		// Check if post is allowed
		if ( empty( $post_object->post_type ) || ( $is_new_post && empty( $post_object->post_title ) ) || Permalink_Manager_Helper_Functions::is_post_excluded( $post_object, true, $is_new_post ) ) {
			return false;
		}

		// Manage 'Auto-update URI' settings
		if ( ! empty( $auto_update_mode ) ) {
			$auto_update_uri = $auto_update_mode;
			update_post_meta( $post_object->ID, 'auto_update_uri', $auto_update_mode );
		} elseif ( $auto_update_mode === 0 ) {
			$auto_update_uri = $permalink_manager_options['general']['auto_update_uris'];
			delete_post_meta( $post_object->ID, 'auto_update_uri' );
		} else {
			$auto_update_uri = get_post_meta( $post_object->ID, 'auto_update_uri', true );
			$auto_update_uri = ( ! empty( $auto_update_uri ) ) ? $auto_update_uri : $permalink_manager_options['general']['auto_update_uris'];
		}

		$default_uri = self::get_default_post_uri( $post_object );
		$native_uri  = self::get_default_post_uri( $post_object, true );
		$old_uri     = self::get_post_uri( $post_object->ID, true );

		if ( $is_new_post ) {
			$new_uri    = $default_uri;
			$allow_save = apply_filters( 'permalink_manager_allow_new_post_uri', true, $post_object );
		} else {
			$new_uri    = ( ( $new_uri == '' || $auto_update_uri == 1 ) && ! in_array( $post_object->post_status, array( 'draft', 'auto-draft' ) ) ) ? $default_uri : Permalink_Manager_Helper_Functions::sanitize_title( $new_uri, true );
			$allow_save = apply_filters( 'permalink_manager_allow_update_post_uri', true, $post_object );
		}

		$new_uri = apply_filters( 'permalink_manager_pre_update_post_uri', $new_uri, $post_object->ID, $old_uri, $native_uri, $default_uri );

		if ( ! $allow_save || ( ! empty( $auto_update_uri ) && $auto_update_uri == 2 ) ) {
			$uri_saved = false;
		} else if ( ! empty( $new_uri ) ) {
			Permalink_Manager_URI_Functions::save_single_uri( $post_object->ID, $new_uri, false, true );
			$uri_saved = true;
		} else {
			$uri_saved = false;
		}

		do_action( 'permalink_manager_updated_post_uri', $post_object->ID, $new_uri, $old_uri, $native_uri, $default_uri, $single_update = true, $uri_saved );

		return $uri_saved;
	}

	/**
	 * Generate the custom permalink when 'wp_insert_post' action is triggered
	 *
	 * @param int $post_id Post ID.
	 */
	function insert_post_hook( $post_id ) {
		global $permalink_manager_uris;

		// Do not trigger if post is a revision or imported via WP All Import (URI should be set after the post meta is added)
		if ( empty( $post_id ) || wp_is_post_revision( $post_id ) || ( ! empty( $_REQUEST['page'] ) && $_REQUEST['page'] == 'pmxi-admin-import' ) ) {
			return;
		}

		// Stop when products are imported with WooCommerce importer
		if ( ! empty( $_REQUEST['action'] ) && $_REQUEST['action'] == 'woocommerce_do_ajax_product_import' ) {
			return;
		}

		// Do not process REST API requests originating from Gutenberg JS functions
		if ( defined( 'REST_REQUEST' ) && REST_REQUEST && ! empty( $_SERVER['HTTP_X_WP_NONCE'] ) ) {
			return;
		}

		// Do not do anything if the custom permalink was generated before or 'custom_uri' field is present in the request
		if ( isset( $permalink_manager_uris[ $post_id ] ) || ( isset( $_POST['custom_uri'] ) ) ) {
			return;
		}

		self::save_uri( $post_id, '', true, 0 );
	}

	/**
	 * Save the custom permalink when 'save_post' action is triggered
	 *
	 * @param int $post_id Term ID.
	 */
	static function update_post_hook( $post_id ) {
		// Verify nonce at first
		if ( ! isset( $_POST['permalink-manager-nonce'] ) || ! wp_verify_nonce( $_POST['permalink-manager-nonce'], 'permalink-manager-edit-uri-box' ) ) {
			return;
		}

		// Do not do anything if the field with URI or element ID are not present or different from the provided post ID
		if ( ! isset( $_POST['custom_uri'] ) || empty( $_POST['permalink-manager-edit-uri-element-id'] ) || $_POST['permalink-manager-edit-uri-element-id'] != $post_id ) {
			return;
		}

		// Check if the user can edit this post
		if ( ! current_user_can( 'edit_post', $post_id ) ) {
			return;
		}

		// Fix for revisions
		$post_id = wp_is_post_revision( $post_id ) ? wp_is_post_revision( $post_id ) : $post_id;
		$post    = get_post( $post_id );

		// Get auto-update URI setting (if empty use global setting)
		if ( isset( $_POST["auto_update_uri"] ) && is_numeric( $_POST["auto_update_uri"] ) ) {
			$auto_update_mode = intval( $_POST["auto_update_uri"] );
		} else {
			$auto_update_mode = false;
		}

		// Update the slug (if changed)
		if ( isset( $_POST['permalink-manager-edit-uri-element-slug'] ) && isset( $_POST['native_slug'] ) && ( $_POST['native_slug'] !== $post->post_name ) ) {
			// Make sure that '_wp_old_slug' is saved
			if ( ! empty( $_POST['post_name'] ) || ( isset( $_POST['action'] ) && in_array( $_POST['action'], array( 'pm_save_permalink', 'editpost' ) ) ) ) {
				$post_after            = clone $post;
				$post_after->post_name = sanitize_title( $_POST['native_slug'] );

				wp_check_for_changed_slugs( $post_id, $post_after, $post );
			}

			self::update_slug_by_id( $_POST['native_slug'], $post_id );
		}

		self::save_uri( $post_id, $_POST['custom_uri'], false, $auto_update_mode );
	}

	/**
	 * Remove URI from options array after post is moved to the trash
	 *
	 * @param int $post_id
	 */
	function remove_post_hook( $post_id ) {
		Permalink_Manager_URI_Functions::remove_single_uri( $post_id, false, true );
	}

}
