<?php

/**

* Admin functions for the plugin.

*

* @package hide-post

*/

defined( 'ABSPATH' ) or exit;

/**

* Unlist_Posts_Admin setup

*

* @since 1.0

*/

class Unlist_Posts_Admin {

/**

* Instance of Unlist_Posts_Admin

*

* @var Unlist_Posts_Admin

*/

private static $_instance = null;

/**

* Instance of Unlist_Posts_Admin

*

* @return Unlist_Posts_Admin Instance of Unlist_Posts_Admin

*/

public static function instance() {

if ( ! isset( self::$_instance ) ) {

self::$_instance = new self();

}

return self::$_instance;

}

/**

* Constructor

*/

private function __construct() {

add_action( 'add_meta_boxes', array( $this, 'register_metabox' ) );

add_action( 'save_post', array( $this, 'save_meta' ) );

add_filter( 'display_post_states', array( $this, 'add_unlisted_post_status' ), 10, 2 );

add_filter( 'parse_query', array( $this, 'filter_unlisted_posts' ) );

add_action( 'init', array( $this, 'add_post_filter' ) );

add_action( 'admin_init', array( $this, 'register_list_table_hooks' ) );

add_action( 'quick_edit_custom_box', array( $this, 'quick_edit_field' ), 10, 2 );

add_action( 'bulk_edit_custom_box', array( $this, 'bulk_edit_field' ), 10, 2 );

add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_inline_edit_script' ) );

}

/**

* Return the list of public post types the plugin operates on.

*

* @return array

*/

private function get_supported_post_types() {

return get_post_types( array( 'public' => true ), 'names', 'and' );

}

/**

* Register the Unlisted column on every supported post-type list table.

*

* The custom column is required for `quick_edit_custom_box` and

* `bulk_edit_custom_box` to fire for our field.

*/

public function register_list_table_hooks() {

foreach ( $this->get_supported_post_types() as $post_type ) {

add_filter( "manage_{$post_type}_posts_columns", array( $this, 'add_status_column' ) );

add_action( "manage_{$post_type}_posts_custom_column", array( $this, 'render_status_column' ), 10, 2 );

}

}

/**

* Add the Unlisted column header.

*

* @param array $columns Existing list table columns.

* @return array

*/

public function add_status_column( $columns ) {

$columns['unlist_posts_status'] = __( 'Unlisted', 'unlist-posts' );

return $columns;

}

/**

* Render the Unlisted column cell. The data-unlisted attribute is read by JS

* to pre-check the Quick Edit checkbox.

*

* @param string $column Column key being rendered.

* @param int $post_id Post being rendered.

*/

public function render_status_column( $column, $post_id ) {

if ( 'unlist_posts_status' !== $column ) {

return;

}

$unlisted = $this->is_unlisted( $post_id );

printf(

'<span class="unlist-posts-status" data-unlisted="%s">%s</span>',

esc_attr( $unlisted ? '1' : '0' ),

$unlisted ? esc_html__( 'Yes', 'unlist-posts' ) : '&mdash;'

);

}

/**

* Output the Quick Edit checkbox.

*

* @param string $column Column key.

* @param string $post_type Post type being edited.

*/

public function quick_edit_field( $column, $post_type ) {

if ( 'unlist_posts_status' !== $column ) {

return;

}

if ( ! in_array( $post_type, $this->get_supported_post_types(), true ) ) {

return;

}

wp_nonce_field( 'unlist_posts_quick_edit', 'unlist_posts_qe_nonce' );

?>

<fieldset class="inline-edit-col-right">

<div class="inline-edit-col">

<label class="alignleft">

<input type="checkbox" name="unlist_posts_quick_edit" value="1" />

<span class="checkbox-title"><?php esc_html_e( 'Unlist this post', 'unlist-posts' ); ?></span>

</label>

</div>

</fieldset>

<?php

}

/**

* Output the Bulk Edit tri-state select.

*

* @param string $column Column key.

* @param string $post_type Post type being edited.

*/

public function bulk_edit_field( $column, $post_type ) {

if ( 'unlist_posts_status' !== $column ) {

return;

}

if ( ! in_array( $post_type, $this->get_supported_post_types(), true ) ) {

return;

}

?>

<fieldset class="inline-edit-col-right">

<div class="inline-edit-col">

<label class="inline-edit-group">

<span class="title"><?php esc_html_e( 'Unlisted', 'unlist-posts' ); ?></span>

<select name="unlist_posts_bulk_edit">

<option value="-1"><?php esc_html_e( '— No Change —', 'unlist-posts' ); ?></option>

<option value="unlist"><?php esc_html_e( 'Unlist', 'unlist-posts' ); ?></option>

<option value="list"><?php esc_html_e( 'List', 'unlist-posts' ); ?></option>

</select>

</label>

</div>

</fieldset>

<?php

}

/**

* Enqueue inline JS that pre-checks the Quick Edit checkbox based on the

* row's current state.

*

* @param string $hook Current admin page hook.

*/

public function enqueue_inline_edit_script( $hook ) {

if ( 'edit.php' !== $hook ) {

return;

}

$screen = get_current_screen();

if ( ! $screen || ! in_array( $screen->post_type, $this->get_supported_post_types(), true ) ) {

return;

}

$script = <<<'JS'

(function($) {

if ( typeof inlineEditPost === 'undefined' ) {

return;

}

var origEdit = inlineEditPost.edit;

inlineEditPost.edit = function( id ) {

origEdit.apply( this, arguments );

var postId = 0;

if ( typeof id === 'object' ) {

postId = parseInt( this.getId( id ), 10 );

} else {

postId = parseInt( id, 10 );

}

if ( ! postId ) {

return;

}

var unlisted = $( '#post-' + postId ).find( '.unlist-posts-status' ).data( 'unlisted' );

$( '.inline-edit-row' )

.find( 'input[name="unlist_posts_quick_edit"]' )

.prop( 'checked', String( unlisted ) === '1' );

};

})(jQuery);

JS;

wp_add_inline_script( 'inline-edit-post', $script );

}

/**

* Get the unlisted post IDs as a clean array of integers.

*

* Legacy installs may have stored the option as an empty string, so we

* normalize aggressively before any read or write.

*

* @return int[]

*/

private function get_unlisted_ids() {

$stored = get_option( 'unlist_posts', array() );

if ( ! is_array( $stored ) ) {

return array();

}

$ids = array_map( 'intval', $stored );

$ids = array_filter(

$ids,

function ( $id ) {

return $id > 0;

}

);

return array_values( array_unique( $ids ) );

}

/**

* Whether a post is currently in the unlisted option list.

*

* @param int $post_id Post ID.

* @return bool

*/

private function is_unlisted( $post_id ) {

return in_array( (int) $post_id, $this->get_unlisted_ids(), true );

}

/**

* Add or remove a post ID in the unlisted option.

*

* @param int $post_id Post ID.

* @param bool $unlist True to unlist, false to list.

*/

private function set_unlisted( $post_id, $unlist ) {

$post_id = (int) $post_id;

$hidden_posts = $this->get_unlisted_ids();

if ( $unlist ) {

if ( ! in_array( $post_id, $hidden_posts, true ) ) {

$hidden_posts[] = $post_id;

}

} else {

$hidden_posts = array_values( array_diff( $hidden_posts, array( $post_id ) ) );

}

update_option( 'unlist_posts', $hidden_posts );

}

/**

* Register meta box(es).

*/

public function register_metabox() {

$args = array(

'public' => true,

);

$post_types = get_post_types( $args, 'names', 'and' );

add_meta_box(

'ehf-meta-box',

__( 'Unlist Post', 'unlist-posts' ),

array(

$this,

'metabox_render',

),

$post_types,

'side',

'high'

);

}

/**

* Render Meta field.

*

* @param POST $post Currennt post object which is being displayed.

*/

public function metabox_render( $post ) {

$hidden_posts = get_option( 'unlist_posts', array() );

if ( '' === $hidden_posts ) {

$hidden_posts = array();

}

$checked = '';

if ( in_array( (int) $post->ID, $hidden_posts, true ) ) {

$checked = 'checked';

}

// We'll use this nonce field later on when saving.

wp_nonce_field( 'unlist_post_nounce', 'unlist_post_nounce' );

?>

<p>

<label class="checkbox-inline">

<input name="unlist_posts" type="checkbox" <?php echo esc_attr( $checked ); ?> value=""><?php esc_html_e( 'Unlist this post?', 'unlist-posts' ); ?>

</label>

</p>

<p class="description"><?php esc_html_e( 'This will hide the post from your site, The post can only be accessed from direct URL.', 'unlist-posts' ); ?> </p>

<?php

}

/**

* Save meta field. Dispatches to the appropriate flow:

* Bulk Edit, Quick Edit, or the post-edit metabox.

*

* @param int $post_id Current post being saved.

*

* @return void

*/

public function save_meta( $post_id ) {

// Bail if we're doing an auto save or on a revision.

if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {

return;

}

if ( false !== wp_is_post_revision( $post_id ) ) {

return;

}

if ( ! current_user_can( 'edit_post', $post_id ) ) {

return;

}

// Bulk Edit. Core verifies the bulk-posts nonce in edit.php before

// bulk_edit_posts() runs, but we re-verify here for defense in depth so

// stray $_REQUEST keys in unrelated save_post contexts cannot trigger

// an update.

if ( isset( $_REQUEST['bulk_edit'] ) && isset( $_REQUEST['unlist_posts_bulk_edit'] ) ) {

if ( empty( $_REQUEST['_wpnonce'] ) ||

! wp_verify_nonce( sanitize_text_field( wp_unslash( $_REQUEST['_wpnonce'] ) ), 'bulk-posts' ) ) {

return;

}

$value = sanitize_text_field( wp_unslash( $_REQUEST['unlist_posts_bulk_edit'] ) );

if ( 'unlist' === $value ) {

$this->set_unlisted( $post_id, true );

} elseif ( 'list' === $value ) {

$this->set_unlisted( $post_id, false );

}

return;

}

// Quick Edit.

if ( isset( $_POST['unlist_posts_qe_nonce'] ) ) {

if ( ! wp_verify_nonce( sanitize_text_field( wp_unslash( $_POST['unlist_posts_qe_nonce'] ) ), 'unlist_posts_quick_edit' ) ) {

return;

}

$this->set_unlisted( $post_id, isset( $_POST['unlist_posts_quick_edit'] ) );

return;

}

// Post-edit metabox.

if ( ! isset( $_POST['unlist_post_nounce'] ) || ! wp_verify_nonce( $_POST['unlist_post_nounce'], 'unlist_post_nounce' ) ) {

return;

}

$this->set_unlisted( $post_id, isset( $_POST['unlist_posts'] ) );

}

/**

* Add 'Unlisted' post status to post list items.

*

* @param Array $states An array of post display states.

* @param Post $post The current post object.

*

* @return Array $states An updated array of post display states.

*/

public function add_unlisted_post_status( $states, $post ) {

// Bail if the unlisted post filter is active, to avoid redundancy.

if ( is_admin() && isset( $_GET['post_status'] ) && 'unlisted' === $_GET['post_status'] ) {

return $states;

}

// Get the list of unlisted post IDs from the options table.

$unlisted_posts = maybe_unserialize( get_option( 'unlist_posts', array() ) );

// Check if this post is unlisted and mark it as so if appropriate.

if ( in_array( $post->ID, $unlisted_posts, true ) ) {

$states[] = __( 'Unlisted', 'unlist-posts' );

}

return $states;

}

/**

* Add 'Unlisted' filter to the post list.

*

* @param Array $views An array of post list filters.

*

* @return Array $views An updated array of post list filters.

*/

public function add_unlisted_post_filter( $views ) {

// Get the list of unlisted post IDs from the options table.

$unlisted_posts = maybe_unserialize( get_option( 'unlist_posts', array() ) );

$count = false;

// Mark 'Unlisted' filter as the current filter if it is.

$link_attributes = '';

if ( is_admin() && isset( $_GET['post_status'] ) && 'unlisted' === $_GET['post_status'] ) {

$link_attributes = 'class="current" aria-current="page"';

}

if ( ! empty( $unlisted_posts ) ) {

$post_type = get_current_screen()->post_type ? get_current_screen()->post_type : get_post_types();

$query = new WP_Query(

array(

'post_type' => $post_type,

'post__in' => $unlisted_posts,

)

);

$count = isset( $query->found_posts ) ? $query->found_posts : false;

}

$link = add_query_arg(

array(

'post_status' => 'unlisted',

)

);

if ( false !== $count && 0 !== $count ) {

$views['unlisted'] = '<a href=" ' . esc_url( $link ) . ' " ' . $link_attributes . '>' . __( 'Unlisted', 'unlist-posts' ) . ' <span class="count">(' . esc_html( $count ) . ')</span></a>';

}

return $views;

}

/**

* Add posts filter for all the public posts.

*

* @return void

*/

public function add_post_filter() {

$args = array(

'public' => true,

);

$post_types = get_post_types( $args, 'names', 'and' );

foreach ( $post_types as $post_type ) {

add_filter( 'views_edit-' . $post_type, array( $this, 'add_unlisted_post_filter' ) );

}

}

/**

* Parse the post list query for unlisted posts.

*

* @param Object $query The instance of WP_Query.

*

* @return Object $query The updated instance of WP_Query.

*/

public function filter_unlisted_posts( $query ) {

global $pagenow;

if ( is_admin() && 'edit.php' === $pagenow && isset( $_GET['post_status'] ) && 'unlisted' === $_GET['post_status'] ) {

// Get the list of unlisted post IDs from the options table.

$unlisted_posts = maybe_unserialize( get_option( 'unlist_posts', array() ) );

// Only show posts that are in the list of unlisted post IDs.

$query->query_vars['post__in'] = $unlisted_posts;

}

return $query;

}

}

Unlist_Posts_Admin::instance();