<?php
/**
* Edit Tags Administration Screen.
*
* @package WordPress
* @subpackage Administration
*/

/** WordPress Administration Bootstrap */
require_once __DIR__ . '/admin.php';

if ( ! $taxnow ) {
wp_die( __( 'Invalid taxonomy.' ) );
}

$tax = get_taxonomy( $taxnow );

if ( ! $tax ) {
wp_die( __( 'Invalid taxonomy.' ) );
}

if ( ! in_array( $tax->name, get_taxonomies( array( 'show_ui' => true ) ), true ) ) {
wp_die( __( 'Sorry, you are not allowed to edit terms in this taxonomy.' ) );
}

if ( ! current_user_can( $tax->cap->manage_terms ) ) {
wp_die(
'<h1>' . __( 'You need a higher level of permission.' ) . '</h1>' .
'<p>' . __( 'Sorry, you are not allowed to manage terms in this taxonomy.' ) . '</p>',
403
);
}

/**
* $post_type is set when the WP_Terms_List_Table instance is created.
*
* @global string $post_type Global post type.
*/
global $post_type;

$wp_list_table = _get_list_table( 'WP_Terms_List_Table' );
$pagenum = $wp_list_table->get_pagenum();

$title = $tax->labels->name;

if ( 'post' !== $post_type ) {
$parent_file = ( 'attachment' === $post_type ) ? 'upload.php' : "edit.php?post_type=$post_type";
$submenu_file = "edit-tags.php?taxonomy=$taxonomy&amp;post_type=$post_type";
} elseif ( 'link_category' === $tax->name ) {
$parent_file = 'link-manager.php';
$submenu_file = 'edit-tags.php?taxonomy=link_category';
} else {
$parent_file = 'edit.php';
$submenu_file = "edit-tags.php?taxonomy=$taxonomy";
}

add_screen_option(
'per_page',
array(
'default' => 20,
'option' => 'edit_' . $tax->name . '_per_page',
)
);

get_current_screen()->set_screen_reader_content(
array(
'heading_pagination' => $tax->labels->items_list_navigation,
'heading_list' => $tax->labels->items_list,
)
);

$location = false;
$referer = wp_get_referer();
if ( ! $referer ) { // For POST requests.
$referer = wp_unslash( $_SERVER['REQUEST_URI'] );
}
$referer = remove_query_arg( array( '_wp_http_referer', '_wpnonce', 'error', 'message', 'paged' ), $referer );
switch ( $wp_list_table->current_action() ) {

case 'add-tag':
check_admin_referer( 'add-tag', '_wpnonce_add-tag' );

if ( ! current_user_can( $tax->cap->edit_terms ) ) {
wp_die(
'<h1>' . __( 'You need a higher level of permission.' ) . '</h1>' .
'<p>' . __( 'Sorry, you are not allowed to create terms in this taxonomy.' ) . '</p>',
403
);
}

$ret = wp_insert_term( $_POST['tag-name'], $taxonomy, $_POST );
if ( $ret && ! is_wp_error( $ret ) ) {
$location = add_query_arg( 'message', 1, $referer );
} else {
$location = add_query_arg(
array(
'error' => true,
'message' => 4,
),
$referer
);
}

break;

case 'delete':
if ( ! isset( $_REQUEST['tag_ID'] ) ) {
break;
}

$tag_ID = (int) $_REQUEST['tag_ID'];
check_admin_referer( 'delete-tag_' . $tag_ID );

if ( ! current_user_can( 'delete_term', $tag_ID ) ) {
wp_die(
'<h1>' . __( 'You need a higher level of permission.' ) . '</h1>' .
'<p>' . __( 'Sorry, you are not allowed to delete this item.' ) . '</p>',
403
);
}

wp_delete_term( $tag_ID, $taxonomy );

$location = add_query_arg( 'message', 2, $referer );

// When deleting a term, prevent the action from redirecting back to a term that no longer exists.
$location = remove_query_arg( array( 'tag_ID', 'action' ), $location );

break;

case 'bulk-delete':
check_admin_referer( 'bulk-tags' );

if ( ! current_user_can( $tax->cap->delete_terms ) ) {
wp_die(
'<h1>' . __( 'You need a higher level of permission.' ) . '</h1>' .
'<p>' . __( 'Sorry, you are not allowed to delete these items.' ) . '</p>',
403
);
}

$tags = (array) $_REQUEST['delete_tags'];
foreach ( $tags as $tag_ID ) {
wp_delete_term( $tag_ID, $taxonomy );
}

$location = add_query_arg( 'message', 6, $referer );

break;

case 'edit':
if ( ! isset( $_REQUEST['tag_ID'] ) ) {
break;
}

$term_id = (int) $_REQUEST['tag_ID'];
$term = get_term( $term_id );

if ( ! $term instanceof WP_Term ) {
wp_die( __( 'You attempted to edit an item that does not exist. Perhaps it was deleted?' ) );
}

wp_redirect( sanitize_url( get_edit_term_link( $term_id, $taxonomy, $post_type ) ) );
exit;

case 'editedtag':
$tag_ID = (int) $_POST['tag_ID'];
check_admin_referer( 'update-tag_' . $tag_ID );

if ( ! current_user_can( 'edit_term', $tag_ID ) ) {
wp_die(
'<h1>' . __( 'You need a higher level of permission.' ) . '</h1>' .
'<p>' . __( 'Sorry, you are not allowed to edit this item.' ) . '</p>',
403
);
}

$tag = get_term( $tag_ID, $taxonomy );
if ( ! $tag ) {
wp_die( __( 'You attempted to edit an item that does not exist. Perhaps it was deleted?' ) );
}

$ret = wp_update_term( $tag_ID, $taxonomy, $_POST );

if ( $ret && ! is_wp_error( $ret ) ) {
$location = add_query_arg( 'message', 3, $referer );
} else {
$location = add_query_arg(
array(
'error' => true,
'message' => 5,
),
$referer
);
}
break;
default:
if ( ! $wp_list_table->current_action() || ! isset( $_REQUEST['delete_tags'] ) ) {
break;
}
check_admin_referer( 'bulk-tags' );

$screen = get_current_screen()->id;
$tags = (array) $_REQUEST['delete_tags'];

/** This action is documented in wp-admin/edit.php */
$location = apply_filters( "handle_bulk_actions-{$screen}", $location, $wp_list_table->current_action(), $tags ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
break;
}

if ( ! $location && ! empty( $_REQUEST['_wp_http_referer'] ) ) {
$location = remove_query_arg( array( '_wp_http_referer', '_wpnonce' ), wp_unslash( $_SERVER['REQUEST_URI'] ) );
}

if ( $location ) {
if ( $pagenum > 1 ) {
$location = add_query_arg( 'paged', $pagenum, $location ); // $pagenum takes care of $total_pages.
}

/**
* Filters the taxonomy redirect destination URL.
*
* @since 4.6.0
*
* @param string $location The destination URL.
* @param WP_Taxonomy $tax The taxonomy object.
*/
wp_redirect( apply_filters( 'redirect_term_location', $location, $tax ) );
exit;
}

$wp_list_table->prepare_items();
$total_pages = $wp_list_table->get_pagination_arg( 'total_pages' );

if ( $pagenum > $total_pages && $total_pages > 0 ) {
wp_redirect( add_query_arg( 'paged', $total_pages ) );
exit;
}

wp_enqueue_script( 'admin-tags' );
if ( current_user_can( $tax->cap->edit_terms ) ) {
wp_enqueue_script( 'inline-edit-tax' );
}

if ( 'category' === $taxonomy || 'link_category' === $taxonomy || 'post_tag' === $taxonomy ) {
$help = '';
if ( 'category' === $taxonomy ) {
$help = '<p>' . sprintf(
/* translators: %s: URL to Writing Settings screen. */
__( 'You can use categories to define sections of your site and group related posts. The default category is &#8220;Uncategorized&#8221; until you change it in your <a href="%s">writing settings</a>.' ),
'options-writing.php'
) . '</p>';
} elseif ( 'link_category' === $taxonomy ) {
$help = '<p>' . __( 'You can create groups of links by using Link Categories. Link Category names must be unique and Link Categories are separate from the categories you use for posts.' ) . '</p>';
} else {
$help = '<p>' . __( 'You can assign keywords to your posts using <strong>tags</strong>. Unlike categories, tags have no hierarchy, meaning there is no relationship from one tag to another.' ) . '</p>';
}

if ( 'link_category' === $taxonomy ) {
$help .= '<p>' . __( 'You can delete Link Categories in the Bulk Action pull-down, but that action does not delete the links within the category. Instead, it moves them to the default Link Category.' ) . '</p>';
} else {
$help .= '<p>' . __( 'What&#8217;s the difference between categories and tags? Normally, tags are ad-hoc keywords that identify important information in your post (names, subjects, etc) that may or may not recur in other posts, while categories are pre-determined sections. If you think of your site like a book, the categories are like the Table of Contents and the tags are like the terms in the index.' ) . '</p>';
}

get_current_screen()->add_help_tab(
array(
'id' => 'overview',
'title' => __( 'Overview' ),
'content' => $help,
)
);

if ( 'category' === $taxonomy || 'post_tag' === $taxonomy ) {
if ( 'category' === $taxonomy ) {
$help = '<p>' . __( 'When adding a new category on this screen, you&#8217;ll fill in the following fields:' ) . '</p>';
} else {
$help = '<p>' . __( 'When adding a new tag on this screen, you&#8217;ll fill in the following fields:' ) . '</p>';
}

$help .= '<ul>' .
'<li>' . __( '<strong>Name</strong> &mdash; The name is how it appears on your site.' ) . '</li>';

$help .= '<li>' . __( '<strong>Slug</strong> &mdash; The &#8220;slug&#8221; is the URL-friendly version of the name. It is usually all lowercase and contains only letters, numbers, and hyphens.' ) . '</li>';

if ( 'category' === $taxonomy ) {
$help .= '<li>' . __( '<strong>Parent</strong> &mdash; Categories, unlike tags, can have a hierarchy. You might have a Jazz category, and under that have child categories for Bebop and Big Band. Totally optional. To create a subcategory, just choose another category from the Parent dropdown.' ) . '</li>';
}

$help .= '<li>' . __( '<strong>Description</strong> &mdash; The description is not prominent by default; however, some themes may display it.' ) . '</li>' .
'</ul>' .
'<p>' . __( 'You can change the display of this screen using the Screen Options tab to set how many items are displayed per screen and to display/hide columns in the table.' ) . '</p>';

get_current_screen()->add_help_tab(
array(
'id' => 'adding-terms',
'title' => 'category' === $taxonomy ? __( 'Adding Categories' ) : __( 'Adding Tags' ),
'content' => $help,
)
);
}

$help = '<p><strong>' . __( 'For more information:' ) . '</strong></p>';

if ( 'category' === $taxonomy ) {
$help .= '<p>' . __( '<a href="https://wordpress.org/documentation/article/posts-categories-screen/">Documentation on Categories</a>' ) . '</p>';
} elseif ( 'link_category' === $taxonomy ) {
$help .= '<p>' . __( '<a href="https://codex.wordpress.org/Links_Link_Categories_Screen">Documentation on Link Categories</a>' ) . '</p>';
} else {
$help .= '<p>' . __( '<a href="https://wordpress.org/documentation/article/posts-tags-screen/">Documentation on Tags</a>' ) . '</p>';
}

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

get_current_screen()->set_help_sidebar( $help );

unset( $help );
}

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

// Also used by the Edit Tag form.
require_once ABSPATH . 'wp-admin/includes/edit-tag-messages.php';

if ( is_plugin_active( 'wpcat2tag-importer/wpcat2tag-importer.php' ) ) {
$import_link = admin_url( 'admin.php?import=wpcat2tag' );
} else {
$import_link = admin_url( 'import.php' );
}

?>

<div class="wrap nosubsub">
<h1 class="wp-heading-inline"><?php echo esc_html( $title ); ?></h1>

<?php
if ( isset( $_REQUEST['s'] ) && strlen( $_REQUEST['s'] ) ) {
echo '<span class="subtitle">';
printf(
/* translators: %s: Search query. */
__( 'Search results for: %s' ),
'<strong>' . esc_html( wp_unslash( $_REQUEST['s'] ) ) . '</strong>'
);
echo '</span>';
}
?>

<hr class="wp-header-end">

<?php
$class = ( isset( $_REQUEST['error'] ) ) ? 'error' : 'updated';

if ( $message ) {
wp_admin_notice(
$message,
array(
'id' => 'message',
'additional_classes' => array( $class ),
'dismissible' => true,
)
);

$_SERVER['REQUEST_URI'] = remove_query_arg( array( 'message', 'error' ), $_SERVER['REQUEST_URI'] );
}
?>
<div id="ajax-response"></div>

<form class="search-form wp-clearfix" method="get">
<input type="hidden" name="taxonomy" value="<?php echo esc_attr( $taxonomy ); ?>" />
<input type="hidden" name="post_type" value="<?php echo esc_attr( $post_type ); ?>" />

<?php $wp_list_table->search_box( $tax->labels->search_items, 'tag' ); ?>

</form>

<?php
$can_edit_terms = current_user_can( $tax->cap->edit_terms );

if ( $can_edit_terms ) {
?>
<div id="col-container" class="wp-clearfix">

<div id="col-left">
<div class="col-wrap">

<?php
if ( 'category' === $taxonomy ) {
/**
* Fires before the Add Category form.
*
* @since 2.1.0
* @deprecated 3.0.0 Use {@see '{$taxonomy}_pre_add_form'} instead.
*
* @param object $arg Optional arguments cast to an object.
*/
do_action_deprecated( 'add_category_form_pre', array( (object) array( 'parent' => 0 ) ), '3.0.0', '{$taxonomy}_pre_add_form' );
} elseif ( 'link_category' === $taxonomy ) {
/**
* Fires before the link category form.
*
* @since 2.3.0
* @deprecated 3.0.0 Use {@see '{$taxonomy}_pre_add_form'} instead.
*
* @param object $arg Optional arguments cast to an object.
*/
do_action_deprecated( 'add_link_category_form_pre', array( (object) array( 'parent' => 0 ) ), '3.0.0', '{$taxonomy}_pre_add_form' );
} else {
/**
* Fires before the Add Tag form.
*
* @since 2.5.0
* @deprecated 3.0.0 Use {@see '{$taxonomy}_pre_add_form'} instead.
*
* @param string $taxonomy The taxonomy slug.
*/
do_action_deprecated( 'add_tag_form_pre', array( $taxonomy ), '3.0.0', '{$taxonomy}_pre_add_form' );
}

/**
* Fires before the Add Term form for all taxonomies.
*
* The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug.
*
* Possible hook names include:
*
* - `category_pre_add_form`
* - `post_tag_pre_add_form`
*
* @since 3.0.0
*
* @param string $taxonomy The taxonomy slug.
*/
do_action( "{$taxonomy}_pre_add_form", $taxonomy );
?>

<div class="form-wrap">
<h2><?php echo $tax->labels->add_new_item; ?></h2>
<form id="addtag" method="post" action="edit-tags.php" class="validate"
<?php
/**
* Fires inside the Add Tag form tag.
*
* The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug.
*
* Possible hook names include:
*
* - `category_term_new_form_tag`
* - `post_tag_term_new_form_tag`
*
* @since 3.7.0
*/
do_action( "{$taxonomy}_term_new_form_tag" );
?>
>
<input type="hidden" name="action" value="add-tag" />
<input type="hidden" name="screen" value="<?php echo esc_attr( $current_screen->id ); ?>" />
<input type="hidden" name="taxonomy" value="<?php echo esc_attr( $taxonomy ); ?>" />
<input type="hidden" name="post_type" value="<?php echo esc_attr( $post_type ); ?>" />
<?php wp_nonce_field( 'add-tag', '_wpnonce_add-tag' ); ?>

<div class="form-field form-required term-name-wrap">
<label for="tag-name"><?php _ex( 'Name', 'term name' ); ?></label>
<input name="tag-name" id="tag-name" type="text" value="" size="40" aria-required="true" aria-describedby="name-description" />
<p id="name-description"><?php echo $tax->labels->name_field_description; ?></p>
</div>
<div class="form-field term-slug-wrap">
<label for="tag-slug"><?php _e( 'Slug' ); ?></label>
<input name="slug" id="tag-slug" type="text" value="" size="40" aria-describedby="slug-description" />
<p id="slug-description"><?php echo $tax->labels->slug_field_description; ?></p>
</div>
<?php if ( is_taxonomy_hierarchical( $taxonomy ) ) : ?>
<div class="form-field term-parent-wrap">
<label for="parent"><?php echo esc_html( $tax->labels->parent_item ); ?></label>
<?php
$dropdown_args = array(
'hide_empty' => 0,
'hide_if_empty' => false,
'taxonomy' => $taxonomy,
'name' => 'parent',
'orderby' => 'name',
'hierarchical' => true,
'show_option_none' => __( 'None' ),
);

/**
* Filters the taxonomy parent drop-down on the Edit Term page.
*
* @since 3.7.0
* @since 4.2.0 Added `$context` parameter.
*
* @param array $dropdown_args {
* An array of taxonomy parent drop-down arguments.
*
* @type int|bool $hide_empty Whether to hide terms not attached to any posts. Default 0.
* @type bool $hide_if_empty Whether to hide the drop-down if no terms exist. Default false.
* @type string $taxonomy The taxonomy slug.
* @type string $name Value of the name attribute to use for the drop-down select element.
* Default 'parent'.
* @type string $orderby The field to order by. Default 'name'.
* @type bool $hierarchical Whether the taxonomy is hierarchical. Default true.
* @type string $show_option_none Label to display if there are no terms. Default 'None'.
* }
* @param string $taxonomy The taxonomy slug.
* @param string $context Filter context. Accepts 'new' or 'edit'.
*/
$dropdown_args = apply_filters( 'taxonomy_parent_dropdown_args', $dropdown_args, $taxonomy, 'new' );

$dropdown_args['aria_describedby'] = 'parent-description';

wp_dropdown_categories( $dropdown_args );
?>
<?php if ( 'category' === $taxonomy ) : ?>
<p id="parent-description"><?php _e( 'Categories, unlike tags, can have a hierarchy. You might have a Jazz category, and under that have children categories for Bebop and Big Band. Totally optional.' ); ?></p>
<?php else : ?>
<p id="parent-description"><?php echo $tax->labels->parent_field_description; ?></p>
<?php endif; ?>
</div>
<?php endif; // is_taxonomy_hierarchical() ?>
<div class="form-field term-description-wrap">
<label for="tag-description"><?php _e( 'Description' ); ?></label>
<textarea name="description" id="tag-description" rows="5" cols="40" aria-describedby="description-description"></textarea>
<p id="description-description"><?php echo $tax->labels->desc_field_description; ?></p>
</div>

<?php
if ( ! is_taxonomy_hierarchical( $taxonomy ) ) {
/**
* Fires after the Add Tag form fields for non-hierarchical taxonomies.
*
* @since 3.0.0
*
* @param string $taxonomy The taxonomy slug.
*/
do_action( 'add_tag_form_fields', $taxonomy );
}

/**
* Fires after the Add Term form fields.
*
* The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug.
*
* Possible hook names include:
*
* - `category_add_form_fields`
* - `post_tag_add_form_fields`
*
* @since 3.0.0
*
* @param string $taxonomy The taxonomy slug.
*/
do_action( "{$taxonomy}_add_form_fields", $taxonomy );
?>
<p class="submit">
<?php submit_button( $tax->labels->add_new_item, 'primary', 'submit', false ); ?>
<span class="spinner"></span>
</p>
<?php
if ( 'category' === $taxonomy ) {
/**
* Fires at the end of the Edit Category form.
*
* @since 2.1.0
* @deprecated 3.0.0 Use {@see '{$taxonomy}_add_form'} instead.
*
* @param object $arg Optional arguments cast to an object.
*/
do_action_deprecated( 'edit_category_form', array( (object) array( 'parent' => 0 ) ), '3.0.0', '{$taxonomy}_add_form' );
} elseif ( 'link_category' === $taxonomy ) {
/**
* Fires at the end of the Edit Link form.
*
* @since 2.3.0
* @deprecated 3.0.0 Use {@see '{$taxonomy}_add_form'} instead.
*
* @param object $arg Optional arguments cast to an object.
*/
do_action_deprecated( 'edit_link_category_form', array( (object) array( 'parent' => 0 ) ), '3.0.0', '{$taxonomy}_add_form' );
} else {
/**
* Fires at the end of the Add Tag form.
*
* @since 2.7.0
* @deprecated 3.0.0 Use {@see '{$taxonomy}_add_form'} instead.
*
* @param string $taxonomy The taxonomy slug.
*/
do_action_deprecated( 'add_tag_form', array( $taxonomy ), '3.0.0', '{$taxonomy}_add_form' );
}

/**
* Fires at the end of the Add Term form for all taxonomies.
*
* The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug.
*
* Possible hook names include:
*
* - `category_add_form`
* - `post_tag_add_form`
*
* @since 3.0.0
*
* @param string $taxonomy The taxonomy slug.
*/
do_action( "{$taxonomy}_add_form", $taxonomy );
?>
</form></div>
</div>
</div><!-- /col-left -->

<div id="col-right">
<div class="col-wrap">
<?php } ?>

<?php $wp_list_table->views(); ?>

<form id="posts-filter" method="post">
<input type="hidden" name="taxonomy" value="<?php echo esc_attr( $taxonomy ); ?>" />
<input type="hidden" name="post_type" value="<?php echo esc_attr( $post_type ); ?>" />

<?php $wp_list_table->display(); ?>

</form>

<?php if ( 'category' === $taxonomy ) : ?>
<div class="form-wrap edit-term-notes">
<p>
<?php
printf(
/* translators: %s: Default category. */
__( 'Deleting a category does not delete the posts in that category. Instead, posts that were only assigned to the deleted category are set to the default category %s. The default category cannot be deleted.' ),
/** This filter is documented in wp-includes/category-template.php */
'<strong>' . apply_filters( 'the_category', get_cat_name( get_option( 'default_category' ) ), '', '' ) . '</strong>'
);
?>
</p>
<?php if ( current_user_can( 'import' ) ) : ?>
<p>
<?php
printf(
/* translators: %s: URL to Categories to Tags Converter tool. */
__( 'Categories can be selectively converted to tags using the <a href="%s">category to tag converter</a>.' ),
esc_url( $import_link )
);
?>
</p>
<?php endif; ?>
</div>
<?php elseif ( 'post_tag' === $taxonomy && current_user_can( 'import' ) ) : ?>
<div class="form-wrap edit-term-notes">
<p>
<?php
printf(
/* translators: %s: URL to Categories to Tags Converter tool. */
__( 'Tags can be selectively converted to categories using the <a href="%s">tag to category converter</a>.' ),
esc_url( $import_link )
);
?>
</p>
</div>
<?php
endif;

/**
* Fires after the taxonomy list table.
*
* The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug.
*
* Possible hook names include:
*
* - `after-category-table`
* - `after-post_tag-table`
*
* @since 3.0.0
*
* @param string $taxonomy The taxonomy name.
*/
do_action( "after-{$taxonomy}-table", $taxonomy ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores

if ( $can_edit_terms ) {
?>
</div>
</div><!-- /col-right -->

</div><!-- /col-container -->
<?php } ?>

</div><!-- /wrap -->

<?php if ( ! wp_is_mobile() ) : ?>
<script type="text/javascript">
try{document.forms.addtag['tag-name'].focus();}catch(e){}
</script>
<?php
endif;

$wp_list_table->inline_edit();

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