<?php

/**

 * User administration panel

 *

 * @package WordPress

 * @subpackage Administration

 * @since 1.0.0

 */

/** WordPress Administration Bootstrap */

require_once __DIR__ . '/admin.php';

if ( ! current_user_can( 'list_users' ) ) {

	wp_die(

		'<h1>' . __( 'You need a higher level of permission.' ) . '</h1>' .

		'<p>' . __( 'Sorry, you are not allowed to list users.' ) . '</p>',

		403

	);

}

$wp_list_table = _get_list_table( 'WP_Users_List_Table' );

$pagenum       = $wp_list_table->get_pagenum();

// Used in the HTML title tag.

$title       = __( 'Users' );

$parent_file = 'users.php';

add_screen_option( 'per_page' );

// Contextual help - choose Help on the top right of admin panel to preview this.

get_current_screen()->add_help_tab(

	array(

		'id'      => 'overview',

		'title'   => __( 'Overview' ),

		'content' => '<p>' . __( 'This screen lists all the existing users for your site. Each user has one of five defined roles as set by the site admin: Site Administrator, Editor, Author, Contributor, or Subscriber. Users with roles other than Administrator will see fewer options in the dashboard navigation when they are logged in, based on their role.' ) . '</p>' .

	)

);

get_current_screen()->add_help_tab(

	array(

		'id'      => 'screen-content',

		'title'   => __( 'Screen Content' ),

		'content' => '<p>' . __( 'You can customize the display of this screen in a number of ways:' ) . '</p>' .

						'<ul>' .

						'<li>' . __( 'You can hide/display columns based on your needs and decide how many users to list per screen using the Screen Options tab.' ) . '</li>' .

						'<li>' . __( 'You can filter the list of users by User Role using the text links above the users list to show All, Administrator, Editor, Author, Contributor, or Subscriber. The default view is to show all users. Unused User Roles are not listed.' ) . '</li>' .

						'<li>' . __( 'You can view all posts made by a user by clicking on the number under the Posts column.' ) . '</li>' .

						'</ul>',

	)

);

$help = '<p>' . __( 'Hovering over a row in the users list will display action links that allow you to manage users. You can perform the following actions:' ) . '</p>' .

	'<ul>' .

	'<li>' . __( '<strong>Edit</strong> takes you to the editable profile screen for that user. You can also reach that screen by clicking on the username.' ) . '</li>';

if ( is_multisite() ) {

	$help .= '<li>' . __( '<strong>Remove</strong> allows you to remove a user from your site. It does not delete their content. You can also remove multiple users at once by using bulk actions.' ) . '</li>';

} else {

	$help .= '<li>' . __( '<strong>Delete</strong> brings you to the Delete Users screen for confirmation, where you can permanently remove a user from your site and delete their content. You can also delete multiple users at once by using bulk actions.' ) . '</li>';

}

$help .= '<li>' . __( '<strong>View</strong> takes you to a public author archive which lists all the posts published by the user.' ) . '</li>';

if ( current_user_can( 'edit_users' ) ) {

	$help .= '<li>' . __( '<strong>Send password reset</strong> sends the user an email with a link to set a new password.' ) . '</li>';

}

$help .= '</ul>';

get_current_screen()->add_help_tab(

	array(

		'id'      => 'action-links',

		'title'   => __( 'Available Actions' ),

		'content' => $help,

	)

);

unset( $help );

get_current_screen()->set_help_sidebar(

	'<p><strong>' . __( 'For more information:' ) . '</strong></p>' .

	'<p>' . __( '<a href="https://wordpress.org/documentation/article/users-screen/">Documentation on Managing Users</a>' ) . '</p>' .

	'<p>' . __( '<a href="https://wordpress.org/documentation/article/roles-and-capabilities/">Descriptions of Roles and Capabilities</a>' ) . '</p>' .

	'<p>' . __( '<a href="https://wordpress.org/support/forums/">Support forums</a>' ) . '</p>'

);

get_current_screen()->set_screen_reader_content(

	array(

		'heading_views'      => __( 'Filter users list' ),

		'heading_pagination' => __( 'Users list navigation' ),

		'heading_list'       => __( 'Users list' ),

	)

);

if ( empty( $_REQUEST ) ) {

	$referer = '<input type="hidden" name="wp_http_referer" value="' . esc_attr( wp_unslash( $_SERVER['REQUEST_URI'] ) ) . '" />';

} elseif ( isset( $_REQUEST['wp_http_referer'] ) ) {

	$redirect = remove_query_arg( array( 'wp_http_referer', 'updated', 'delete_count' ), wp_unslash( $_REQUEST['wp_http_referer'] ) );

	$referer  = '<input type="hidden" name="wp_http_referer" value="' . esc_attr( $redirect ) . '" />';

} else {

	$redirect = 'users.php';

	$referer  = '';

}

$update = '';

switch ( $wp_list_table->current_action() ) {

	/* Bulk Dropdown menu Role changes */

	case 'promote':

		check_admin_referer( 'bulk-users' );

		if ( ! current_user_can( 'promote_users' ) ) {

			wp_die( __( 'Sorry, you are not allowed to edit this user.' ), 403 );

		}

		if ( empty( $_REQUEST['users'] ) ) {

			wp_redirect( $redirect );

			exit;

		}

		$editable_roles = get_editable_roles();

		$role           = $_REQUEST['new_role'];

		// Mocking the `none` role so we are able to save it to the database

		$editable_roles['none'] = array(

			'name' => __( '— No role for this site —' ),

		);

		if ( ! $role || empty( $editable_roles[ $role ] ) ) {

			wp_die( __( 'Sorry, you are not allowed to give users that role.' ), 403 );

		}

		if ( 'none' === $role ) {

			$role = '';

		}

		$user_ids = array_map( 'intval', (array) $_REQUEST['users'] );

		$update   = 'promote';

		foreach ( $user_ids as $id ) {

			if ( ! current_user_can( 'promote_user', $id ) ) {

				wp_die( __( 'Sorry, you are not allowed to edit this user.' ), 403 );

			}

			// The new role of the current user must also have the promote_users cap or be a multisite super admin.

			if ( $id === $current_user->ID

				&& ! $wp_roles->role_objects[ $role ]->has_cap( 'promote_users' )

				&& ! ( is_multisite() && current_user_can( 'manage_network_users' ) )

			) {

					$update = 'err_admin_role';

					continue;

			}

			// If the user doesn't already belong to the blog, bail.

			if ( is_multisite() && ! is_user_member_of_blog( $id ) ) {

				wp_die(

					'<p>' . __( 'One of the selected users is not a member of this site.' ) . '</p>',

					403

				);

			}

			$user = get_userdata( $id );

			$user->set_role( $role );

		}

		wp_redirect( add_query_arg( 'update', $update, $redirect ) );

		exit;

	case 'dodelete':

		if ( is_multisite() ) {

			wp_die( __( 'User deletion is not allowed from this screen.' ), 400 );

		}

		check_admin_referer( 'delete-users' );

		if ( empty( $_REQUEST['users'] ) ) {

			wp_redirect( $redirect );

			exit;

		}

		$user_ids = array_map( 'intval', (array) $_REQUEST['users'] );

		if ( empty( $_REQUEST['delete_option'] ) ) {

			$url = self_admin_url( 'users.php?action=delete&users[]=' . implode( '&users[]=', $user_ids ) . '&error=true' );

			$url = str_replace( '&', '&', wp_nonce_url( $url, 'bulk-users' ) );

			wp_redirect( $url );

			exit;

		}

		if ( ! current_user_can( 'delete_users' ) ) {

			wp_die( __( 'Sorry, you are not allowed to delete users.' ), 403 );

		}

		$update       = 'del';

		$delete_count = 0;

		foreach ( $user_ids as $id ) {

			if ( ! current_user_can( 'delete_user', $id ) ) {

				wp_die( __( 'Sorry, you are not allowed to delete that user.' ), 403 );

			}

			if ( $id === $current_user->ID ) {

				$update = 'err_admin_del';

				continue;

			}

			switch ( $_REQUEST['delete_option'] ) {

				case 'delete':

					wp_delete_user( $id );

					break;

				case 'reassign':

					wp_delete_user( $id, $_REQUEST['reassign_user'] );

					break;

			}

			++$delete_count;

		}

		$redirect = add_query_arg(

			array(

				'delete_count' => $delete_count,

				'update'       => $update,

			),

			$redirect

		);

		wp_redirect( $redirect );

		exit;

	case 'resetpassword':

		check_admin_referer( 'bulk-users' );

		if ( ! current_user_can( 'edit_users' ) ) {

			$errors = new WP_Error( 'edit_users', __( 'Sorry, you are not allowed to edit users.' ) );

		}

		if ( empty( $_REQUEST['users'] ) ) {

			wp_redirect( $redirect );

			exit();

		}

		$user_ids = array_map( 'intval', (array) $_REQUEST['users'] );

		$reset_count = 0;

		foreach ( $user_ids as $id ) {

			if ( ! current_user_can( 'edit_user', $id ) ) {

				wp_die( __( 'Sorry, you are not allowed to edit this user.' ) );

			}

			if ( $id === $current_user->ID ) {

				$update = 'err_admin_reset';

				continue;

			}

			// Send the password reset link.

			$user = get_userdata( $id );

			if ( true === retrieve_password( $user->user_login ) ) {

				++$reset_count;

			}

		}

		$redirect = add_query_arg(

			array(

				'reset_count' => $reset_count,

				'update'      => 'resetpassword',

			),

			$redirect

		);

		wp_redirect( $redirect );

		exit;

	case 'delete':

		if ( is_multisite() ) {

			wp_die( __( 'User deletion is not allowed from this screen.' ), 400 );

		}

		check_admin_referer( 'bulk-users' );

		if ( empty( $_REQUEST['users'] ) && empty( $_REQUEST['user'] ) ) {

			wp_redirect( $redirect );

			exit;

		}

		if ( ! current_user_can( 'delete_users' ) ) {

			$errors = new WP_Error( 'edit_users', __( 'Sorry, you are not allowed to delete users.' ) );

		}

		if ( empty( $_REQUEST['users'] ) ) {

			$user_ids = array( (int) $_REQUEST['user'] );

		} else {

			$user_ids = array_map( 'intval', (array) $_REQUEST['users'] );

		}

		$all_user_ids = $user_ids;

		if ( in_array( $current_user->ID, $user_ids, true ) ) {

			$user_ids = array_diff( $user_ids, array( $current_user->ID ) );

		}

		/**

		 * Filters whether the users being deleted have additional content

		 * associated with them outside of the `post_author` and `link_owner` relationships.

		 *

		 * @since 5.2.0

		 *

		 * @param bool  $users_have_additional_content Whether the users have additional content. Default false.

		 * @param int[] $user_ids                      Array of IDs for users being deleted.

		 */

		$users_have_content = (bool) apply_filters( 'users_have_additional_content', false, $user_ids );

		if ( $user_ids && ! $users_have_content ) {

			if ( $wpdb->get_var(

				"SELECT ID FROM {$wpdb->posts}

				WHERE post_author IN( " . implode( ',', $user_ids ) . ' )

				LIMIT 1'

			) ) {

				$users_have_content = true;

			} elseif ( $wpdb->get_var(

				"SELECT link_id FROM {$wpdb->links}

				WHERE link_owner IN( " . implode( ',', $user_ids ) . ' )

				LIMIT 1'

			) ) {

				$users_have_content = true;

			}

		}

		if ( $users_have_content ) {

			add_action( 'admin_head', 'delete_users_add_js' );

		}

		require_once ABSPATH . 'wp-admin/admin-header.php';

		?>

		<form method="post" name="updateusers" id="updateusers">

		<?php wp_nonce_field( 'delete-users' ); ?>

		<?php echo $referer; ?>

		<div class="wrap">

		<h1><?php _e( 'Delete Users' ); ?></h1>

		<?php

		if ( isset( $_REQUEST['error'] ) ) :

			wp_admin_notice(

				'<strong>' . __( 'Error:' ) . '</strong> ' . __( 'Please select an option.' ),

				array(

					'additional_classes' => array( 'error' ),

				)

			);

		endif;

		?>

		<?php if ( 1 === count( $all_user_ids ) ) : ?>

			<p><?php _e( 'You have specified this user for deletion:' ); ?></p>

		<?php else : ?>

			<p><?php _e( 'You have specified these users for deletion:' ); ?></p>

		<?php endif; ?>

		<ul>

		<?php

		$go_delete = 0;

		foreach ( $all_user_ids as $id ) {

			$user = get_userdata( $id );

			if ( $id === $current_user->ID ) {

				echo '<li>';

				printf(

					/* translators: 1: User ID, 2: User login. */

					__( 'ID #%1$s: %2$s <strong>The current user will not be deleted.</strong>' ),

					$id,

					$user->user_login

				);

				echo "</li>\n";

			} else {

				echo '<li>';

				printf(

					'<input type="hidden" name="users[]" value="%s" />',

					esc_attr( $id )

				);

				printf(

					/* translators: 1: User ID, 2: User login. */

					__( 'ID #%1$s: %2$s' ),

					$id,

					$user->user_login

				);

				echo "</li>\n";

				++$go_delete;

			}

		}

		?>