<?php

namespace RoosterLMS\UI;

use RoosterLMS\I18n\Format;
use RoosterLMS\I18n\Language;
use RoosterLMS\I18n\Names;
use RoosterLMS\I18n\Providers;
use RoosterLMS\I18n\Switcher;

defined( 'ABSPATH' ) || exit;

final class DataTable {

	public const LOCAL_CAP = 500;

	public const API_VERSION = 1;

	public const MAX_COLUMNS = 20;

	private static int $count = 0;

	private const PREFS_JS = '(function(f){try{var s=JSON.parse(f.getAttribute("data-rl-state")),p=JSON.parse(window.localStorage.getItem("rooster-lms-table:"+s.id)||"{}"),t=f.querySelector("table");f.querySelectorAll("[data-rl-js]").forEach(function(e){e.hidden=false;});if(Array.isArray(p.hide)){t.setAttribute("data-rl-hide",s.columns.filter(function(c){return c.hideable?p.hide.indexOf(c.key)>-1:false;}).map(function(c){return c.index;}).join(" "));var b=f.querySelectorAll("[data-rl-column]"),w=f.querySelector("[data-rl-columns-words]"),x=w?parseInt(w.getAttribute("data-rl-columns-fixed"),10)||0:0,n=x;b.forEach(function(e){e.checked=-1===p.hide.indexOf(e.getAttribute("data-rl-column"));if(e.checked){n++;}});if(w?(w.lastChild?3===w.lastChild.nodeType:false):false){w.lastChild.nodeValue=w.getAttribute("data-rl-columns-words").replace("%%1$s",n).replace("%%2$s",x+b.length);}}if(p.compact){t.classList.add("rooster-lms-table--compact");var d=f.querySelector("[data-rl-density]");if(d){d.setAttribute("aria-pressed","true");}}}catch(e){}})(document.getElementById(%s));';

	private static array $early = array();

	public static function early_prefs( string $html ): string {
		if ( ! str_contains( $html, 'rooster-lms-table-frame' ) || ! preg_match_all( '/\bid="(rooster-lms-table-\d+)"[^>]*\bclass="rooster-lms rooster-lms-table-frame\b/', $html, $m ) ) {
			return $html;
		}
		foreach ( array_unique( $m[1] ) as $uid ) {
			if ( ! isset( self::$early[ $uid ] ) ) {
				self::$early[ $uid ] = true;
				$html                = EarlyScripts::after( $html, sprintf( self::PREFS_JS, wp_json_encode( $uid ) ) );
			}
		}
		return $html;
	}

	public static function display( TableDefinition $d, ?TableQuery $q = null ): void {
		list( $html, $uid ) = self::frame( $d, $q );
		if ( '' === $html ) {
			return;
		}
		echo wp_kses( $html, Kses::current() );
		if ( '' !== $uid ) {
			wp_print_inline_script_tag( sprintf( self::PREFS_JS, wp_json_encode( $uid ) ) );
		}
	}

	public static function render( TableDefinition $d, ?TableQuery $q = null ): string {
		list( $html, $uid ) = self::frame( $d, $q );
		if ( '' !== $uid ) {
			wp_add_inline_script( Assets::TABLE, sprintf( self::PREFS_JS, wp_json_encode( $uid ) ), 'before' );
		}
		return $html;
	}

	private static function frame( TableDefinition $d, ?TableQuery $q ): array {
		if ( ! $d->can_view( get_current_user_id(), $d->context() ) ) {
			return array( '', '' );
		}
		$q = $q ?? TableQuery::from_request( $d );
		if ( LibraryTable::eligible( $d ) ) {
			return array( LibraryTable::frame( $d, $q ), '' );
		}
		$whole            = self::whole( $d, $q, null );
		list( $q, $page ) = self::read( $d, $q );
		$whole            = $whole ?? self::whole( $d, $q, $page );
		Assets::enqueue_table( $d->mode(), $d->search_live() );
		if ( self::searchable( $d, $page ) || '' !== $whole ) {
			Assets::enqueue_table_search();
		}
		if ( is_admin() ) {
			Assets::enqueue_row_actions();
		}

		++self::$count;
		$uid     = 'rooster-lms-table-' . self::$count;
		$caption = '' !== $d->caption() ? $d->caption() : __( 'Table', 'rooster-lms' );
		$columns = self::columns( $d );
		$bulk    = $d->bulk();

		$attrs = array(
			'id'             => $uid,
			'class'          => 'rooster-lms rooster-lms-table-frame',
			'data-rl-table'  => $d->id(),
			'data-rl-mode'   => $d->mode(),
			'data-rl-state'  => (string) wp_json_encode( self::state( $d, $q, $page, '' !== $whole ) ),
			'data-rl-i18n'   => (string) wp_json_encode( self::strings( $d ) ),
			'data-rl-paging' => $d->paging(),
		);
		if ( $d->search_live() ) {
			$attrs['data-rl-search-live'] = '1';
		}
		$view_key = self::view_filter( $d );
		if ( '' !== $view_key ) {
			$attrs['data-rl-views'] = $view_key;
		}
		if ( 'router' === $d->mode() && $d->live_frame() ) {
			$attrs['data-rl-rest'] = self::live_config( $d );
			if ( null !== $page->total ) {
				$attrs['data-rl-token'] = CountToken::issue( $d->id(), $d->context(), $q->hash(), array( 'n' => $page->total ) );
			}
		}

		$html  = '<div' . self::attrs( $attrs ) . '>';
		$html .= self::toolbar( $d, $q, $uid, $columns );
		$html .= '<div' . self::live_attrs( $d, 'chips', 'rooster-lms-table__chips-slot' ) . '>' . self::chips( $d, $q, $page ) . '</div>';
		$html .= '<div' . self::live_attrs( $d, 'rows', 'rooster-lms-table__live' ) . '>';
		if ( array() !== $bulk ) {
			$html .= '<form class="rooster-lms-table__bulk-form" method="post" action="' . esc_url( $d->bulk_url() ) . '">';
			foreach ( $d->bulk_fields() as $name => $value ) {
				$html .= '<input type="hidden" name="' . esc_attr( $name ) . '" value="' . esc_attr( $value ) . '" />';
			}
		}
		$html .= '<div class="rooster-lms-table__scroll" role="region" tabindex="0" aria-labelledby="' . esc_attr( $uid . '-caption' ) . '">';
		$html .= '<table' . self::table_attrs( $d, $columns ) . '>';
		$html .= '<caption id="' . esc_attr( $uid . '-caption' ) . '"' . ( $d->show_caption() ? '' : ' class="screen-reader-text"' ) . '>' . esc_html( $caption ) . '</caption>';
		$html .= '<thead>' . self::head( $d, $q, $columns ) . '</thead>';
		$html .= '<tbody>' . self::body( $d, $q, $page, $columns ) . '</tbody>';
		$html .= '</table></div>' . $whole;
		if ( array() !== $bulk ) {
			$html .= '<p class="screen-reader-text rooster-lms-table__bulk-status" role="status" aria-live="polite" aria-atomic="true"></p></form>';
		}
		$html .= '</div>';
		$html .= self::footer( $d, $q, $page, $uid );
		$html .= '</div>';
		return array( $html, $uid );
	}

	public static function fragment( TableDefinition $d, TableQuery $q ): array {
		$all   = null;
		$whole = self::whole( $d, $q, null, $all );
		if ( null !== $all && '' !== (string) $whole ) {
			list( $q, $page ) = self::local_page( $d, $q, $all );
		} else {
			list( $q, $page ) = self::read( $d, $q );
		}
		$columns = self::columns( $d );
		$whole   = $whole ?? self::whole( $d, $q, $page );
		return array(
			'whole'   => $whole,
			'thead'   => self::head( $d, $q, $columns ),
			'tbody'   => self::body( $d, $q, $page, $columns ),
			'pager'   => self::pager( $d, $q, $page ),
			'summary' => self::summary( $q, $page ),
			'chips'   => self::chips( $d, $q, $page ),
			'total'   => $page->total,
			'page'    => $q->page,
			'pages'   => self::pages( $q, $page ),
			'more'    => $page->more,
			'after'   => $page->after,
			'state'   => self::state( $d, $q, $page, '' !== $whole ),
		);
	}

	private static function whole( TableDefinition $d, TableQuery $q, ?TablePage $page, ?TablePage &$all = null ): ?string {
		$local = $d->local_filters();
		if ( array() === $local || 'offset' !== $d->paging() || '' !== $q->search ) {
			return '';
		}
		$clear = array();
		foreach ( $local as $key => $server_only ) {
			$value = $q->filters[ $key ] ?? '';
			if ( '' === $value || array() === $value ) {
				continue;
			}
			if ( array_intersect( array_map( 'strval', (array) $value ), array_map( 'strval', (array) $server_only ) ) ) {
				return '';
			}
			$clear[ $key ] = null;
		}
		if ( null === $page && array() === $clear ) {
			return null;
		}
		$cap = max( $q->per_page, $d->local_cap() );
		if ( null !== $page && ( null === $page->total || $page->total > $cap ) ) {
			return '';
		}
		$whole = array(
			'page'        => 1,
			'per_page'    => $cap,
			'known_total' => null,
		);
		if ( null === $page ) {
			$read = $d->source()->page( $q->with( $whole + array( 'filters' => $clear ) ) );
		} elseif ( 1 === $q->page && count( $page->rows ) >= (int) $page->total ) {
			$read = $page;
		} else {
			$read = $d->source()->page( $q->with( $whole ) );
		}
		if ( null === $read->total || $read->total > $cap || count( $read->rows ) < $read->total ) {
			return '';
		}
		if ( null === $page ) {
			$all = $read;
		}
		$sorts = array() !== $d->local_sorts();
		$rows  = '';
		foreach ( $read->rows as $row ) {
			$tr = $d->row( $row );
			if ( '' === $tr ) {
				continue;
			}
			$values = array();
			foreach ( $d->filter_values( $row ) as $key => $list ) {
				$values[ (string) $key ] = array_values( array_map( 'strval', (array) $list ) );
			}
			$attrs = ' data-ra-f="' . esc_attr( (string) wp_json_encode( (object) $values, JSON_HEX_AMP | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_TAG ) ) . '"';
			if ( $sorts ) {
				$attrs .= ' data-ra-s="' . esc_attr( (string) wp_json_encode( (object) $d->sort_values( $row ), JSON_HEX_AMP | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_TAG ) ) . '"';
			}
			$rows .= (string) preg_replace( '/^<tr\b/', '<tr' . $attrs, ltrim( $tr ), 1 );
		}
		return '<template data-ra-rows>' . $rows . '</template>';
	}

	private static function local_page( TableDefinition $d, TableQuery $q, TablePage $all ): array {
		$first = array();
		foreach ( $d->filters() as $filter ) {
			$keys                  = array_keys( $filter->options );
			$first[ $filter->key ] = isset( $keys[0] ) ? (string) $keys[0] : '';
		}
		$asked = array();
		foreach ( array_keys( $d->local_filters() ) as $key ) {
			$value = $q->filters[ $key ] ?? '';
			if ( '' === $value || array() === $value || ( ! is_array( $value ) && '0' === (string) $value && '0' === ( $first[ $key ] ?? '' ) ) ) {
				continue;
			}
			$asked[ $key ] = array_map( 'strval', (array) $value );
		}
		$rows = array_values(
			array_filter(
				$all->rows,
				static function ( $row ) use ( $d, $asked ): bool {
					$values = $d->filter_values( $row );
					foreach ( $asked as $key => $want ) {
						if ( array() === array_intersect( $want, array_map( 'strval', (array) ( $values[ $key ] ?? array() ) ) ) ) {
							return false;
						}
					}
					return true;
				}
			)
		);
		$per  = max( 1, $q->per_page );
		$last = max( 1, (int) ceil( count( $rows ) / $per ) );
		$q    = $q->with(
			array(
				'page'        => min( max( 1, $q->page ), $last ),
				'known_total' => count( $rows ),
			)
		);
		return array( $q, new TablePage( array_slice( $rows, ( $q->page - 1 ) * $per, $per ), count( $rows ), false, '', $all->counts ) );
	}

	public static function page_of( TableDefinition $d, TableQuery $q ): array {
		return self::read( $d, $q );
	}

	private static function read( TableDefinition $d, TableQuery $q ): array {
		$page = $d->source()->page( $q );
		if ( 'offset' === $d->paging() && array() === $page->rows && null !== $page->total && $page->total > 0 && $q->page > 1 ) {
			$last = max( 1, (int) ceil( $page->total / max( 1, $q->per_page ) ) );
			if ( $q->page > $last ) {
				$q    = $q->with(
					array(
						'page'        => $last,
						'known_total' => $page->total,
					)
				);
				$page = $d->source()->page( $q );
			}
		}
		return array( null === $page->total ? $q : $q->with( array( 'known_total' => $page->total ) ), $page );
	}

	public static function live_config( TableDefinition $d, array $attrs = array() ): string {
		return (string) wp_json_encode(
			array(
				'url'     => TreeTable::user_locale( esc_url_raw( rest_url( 'rooster-lms/v1/tables/' . $d->id() . '/live' ) ) ),
				'nonce'   => wp_create_nonce( 'wp_rest' ),
				'lang'    => Switcher::current(),
				'context' => (object) $d->context(),
				'attrs'   => (object) array_map( 'intval', $attrs ),
			)
		);
	}

	public static function number_frames_from( int $n ): void {
		self::$count = max( 0, $n - 1 );
	}

	public static function bare( array $head, string $tbody_html, string $table_class = '', string $caption = '', array $opts = array() ): string {
		if ( LibraryTable::bare_eligible() ) {
			return LibraryTable::bare( $head, $tbody_html, $table_class, $caption, $opts );
		}
		Assets::enqueue_styles();
		$num    = array();
		$center = array();
		$cells  = '';
		foreach ( array_values( $head ) as $i => $column ) {
			if ( $column instanceof Column ) {
				if ( 'end' === $column->align ) {
					$num[] = $i + 1;
				} elseif ( 'center' === $column->align ) {
					$center[] = $i + 1;
				}
				$cells .= self::plain_head( $column );
			} else {
				$cells .= '<th scope="col"' . self::th_class() . '>' . esc_html( (string) $column ) . '</th>';
			}
		}
		$attrs = array( 'class' => trim( 'rooster-lms-table ' . $table_class ) );
		if ( array() !== $num ) {
			$attrs['data-rl-num'] = implode( ' ', $num );
		}
		if ( array() !== $center ) {
			$attrs['data-rl-center'] = implode( ' ', $center );
		}
		$html  = '<div class="rooster-lms rooster-lms-table__scroll" tabindex="0"' . ( '' !== $caption ? ' role="region" aria-label="' . esc_attr( $caption ) . '"' : '' ) . '>';
		$html .= '<table' . self::attrs( $attrs ) . '>';
		if ( '' !== $caption ) {
			$html .= '<caption>' . esc_html( $caption ) . '</caption>';
		}
		$html .= '<thead><tr>' . $cells . '</tr></thead><tbody>' . $tbody_html . '</tbody></table></div>';
		return $html;
	}

	public static function display_bare( array $head, string $tbody_html, string $table_class = '', string $caption = '', array $opts = array() ): void {
		echo wp_kses( self::bare( $head, $tbody_html, $table_class, $caption, $opts ), Kses::current() );
	}

	public static function check_cell( int $id, string $label ): string {
		return '<td class="rooster-lms-table__check"><input type="checkbox" name="rl_ids[]" value="' . (int) $id . '" aria-label="' . esc_attr( $label ) . '" /></td>';
	}

	public static function live_part( string $key, string $classes, string $inner, array $attrs = array() ): string {
		$attrs = array(
			'class'        => $classes,
			'data-rl-live' => $key,
		) + $attrs + array( 'data-rl-stamp' => self::stamp() );
		return '<div' . self::attrs( $attrs ) . '>' . $inner . '</div>';
	}

	public static function search_button( string $label ): string {
		return '<button type="submit" class="rooster-lms-input-group__button" aria-label="' . esc_attr( $label ) . '">'
			. '<svg aria-hidden="true" focusable="false" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="11" cy="11" r="7"/><path d="m20 20-3.5-3.5"/></svg></button>';
	}

	public static function clear_button( string $url, bool $active, string $scope = 'all' ): string {
		return '<a class="rooster-lms-button rooster-lms-button--secondary rooster-lms-table__clear" href="' . esc_url( $url ) . '" data-rl-clear="' . esc_attr( $scope ) . '"'
			. ( $active ? '' : ' data-rl-off="1" aria-hidden="true" tabindex="-1"' ) . '>' . esc_html__( 'Clear filters', 'rooster-lms' ) . '</a>';
	}

	public static function nojs_submit( string $label, string $form = '' ): string {
		return '<noscript><button type="submit"' . ( '' === $form ? '' : ' form="' . esc_attr( $form ) . '"' ) . ' class="' . ( Ui::kit_markup() ? 'rooster-admin-button' : 'rooster-lms-button rooster-lms-button--secondary' ) . '" data-rl-apply="1">' . esc_html( $label ) . '</button></noscript>';
	}

	private static function live_attrs( TableDefinition $d, string $part, string $classes ): string {
		$attrs = array(
			'class'        => $classes,
			'data-rl-live' => $d->id() . ':' . $part,
		);
		if ( 'router' === $d->mode() ) {
			$attrs['data-wp-interactive']   = $d->interactive();
			$attrs['data-wp-router-region'] = 'rooster-lms-table-' . sanitize_html_class( str_replace( '.', '-', $d->id() ) ) . ( 'rows' === $part ? '' : '-' . $part );
		}
		$attrs['data-rl-stamp'] = self::stamp();
		return self::attrs( $attrs );
	}

	private static function stamp(): string {
		static $stamp = '';
		if ( '' === $stamp ) {
			$stamp = bin2hex( random_bytes( 5 ) );
		}
		return $stamp;
	}

	private static function columns( TableDefinition $d ): array {
		return array_slice( array_values( array_filter( $d->columns(), static fn( $c ): bool => $c instanceof Column ) ), 0, self::MAX_COLUMNS );
	}

	private static function state( TableDefinition $d, TableQuery $q, TablePage $page, bool $whole = false ): array {
		$offset  = array() !== $d->bulk() ? 1 : 0;
		$columns = array();
		foreach ( self::columns( $d ) as $i => $column ) {
			$columns[] = array(
				'key'      => $column->key,
				'label'    => $column->label,
				'index'    => $i + 1 + $offset,
				'hideable' => $column->hideable,
				'visible'  => $column->visible,
			);
		}
		list( $default_by, $default_order ) = $d->default_order();
		return array(
			'id'       => $d->id(),
			'args'     => TableQuery::arg_names( $d ),
			'base'     => TableQuery::strip( $d, $d->base_url() ),
			'page'     => $q->page,
			'per_page' => $q->per_page,
			'orderby'  => $q->orderby,
			'order'    => $q->order,
			'filters'  => (object) $q->filters,
			'after'    => $q->after,
			'next'     => $page->after,
			'total'    => $page->total,
			'hash'     => $q->hash(),
			'context'  => (object) $q->context,
			'defaults' => array(
				'orderby'  => (string) $default_by,
				'order'    => 'desc' === $default_order ? 'desc' : 'asc',
				'per_page' => TableQuery::from_state( $d, array(), $q->context )->per_page,
			),
			'columns'  => $columns,
			'search'   => '' !== $d->search_label() ? $d->search_transport() : '',
			'lang'     => self::language( $d ),
			'client'   => self::client( $d, $q, $page ),
			'local'    => $whole ? (object) array_map( static fn( $v ): array => array_values( array_map( 'strval', (array) $v ) ), $d->local_filters() ) : false,
			'sorts'    => $whole ? (object) $d->local_sorts() : (object) array(),
			'listed'   => array(
				'orderby' => $q->orderby,
				'order'   => $q->order,
			),
		);
	}

	private static function searchable( TableDefinition $d, TablePage $page ): bool {
		$rows  = $page->rows;
		$first = reset( $rows );
		return false !== $first && '' !== $d->search_text( $first );
	}

	private static function client( TableDefinition $d, TableQuery $q, TablePage $page ): bool {
		return 'offset' === $d->paging() && 1 === $q->page && '' === $q->search && null !== $page->total && $page->total <= $q->per_page && self::searchable( $d, $page );
	}

	private static function language( TableDefinition $d ): string {
		$provider = Providers::current();
		if ( 'none' === $provider->id() ) {
			return '';
		}
		$lang = '' !== $d->language() ? Language::normalize( $d->language() ) : Names::display_language();
		foreach ( $provider->languages() as $code ) {
			if ( Language::normalize( (string) $code ) === $lang ) {
				return $lang;
			}
		}
		return '';
	}

	private static function strings( TableDefinition $d ): array {
		return array(
			'error'     => __( 'The table could not be loaded. Try again.', 'rooster-lms' ),
			'loading'   => __( 'Loading…', 'rooster-lms' ),
			/* translators: %s: number of selected rows. */
			'selected'  => __( '%s selected', 'rooster-lms' ),
			'confirm'   => __( 'Confirm', 'rooster-lms' ),
			'cancel'    => __( 'Cancel', 'rooster-lms' ),
			'exporting' => __( 'Preparing the file…', 'rooster-lms' ),
			'cleared'   => __( 'Selection cleared', 'rooster-lms' ),
			/* translators: 1: first row number, 2: last row number, 3: number of rows. */
			'showing'   => __( 'Showing %1$s–%2$s of %3$s', 'rooster-lms' ),
			'none'      => __( 'No results', 'rooster-lms' ),
			'empty'     => $d->empty_text( true ),
			'pages'     => __( 'Pages', 'rooster-lms' ),
			'prev'      => __( 'Previous page', 'rooster-lms' ),
			'next'      => __( 'Next page', 'rooster-lms' ),
			/* translators: %s: page number. */
			'page'      => __( 'Page %s', 'rooster-lms' ),
			'asc'       => __( ', sorted ascending', 'rooster-lms' ),
			'desc'      => __( ', sorted descending', 'rooster-lms' ),
			'chevron'   => Pager::chevron(),
		);
	}

	private static function toolbar( TableDefinition $d, TableQuery $q, string $uid, array $columns ): string {
		$end = self::forms( $d, $q, $uid ) . self::tools( $d, $columns, $uid );
		if ( Ui::kit_markup() ) {
			$end = '' !== $end ? '<div class="rooster-admin-table__aside">' . $end . '</div>' : '';
			$all = self::views_nav( $d ) . $end;
			return '' !== $all ? '<div class="rooster-admin-table__toolbar">' . $all . '</div>' : '';
		}
		$end = '' !== $end ? '<div class="rooster-lms-table__toolbar-end">' . $end . '<span class="rooster-lms-table__toolbar-done" hidden></span></div>' : '';
		$all = self::views_nav( $d ) . $end;
		return '' !== $all ? '<div class="rooster-lms-table__toolbar">' . $all . '</div>' : '';
	}

	private static function views_nav( TableDefinition $d ): string {
		$views = $d->table_views();
		return null === $views ? '' : $views->html();
	}

	private static function view_filter( TableDefinition $d ): string {
		$views = $d->table_views();
		if ( null === $views ) {
			return '';
		}
		$key = array_search( $views->arg, TableQuery::arg_names( $d )['filters'], true );
		return is_string( $key ) ? $key : '';
	}

	private static function forms( TableDefinition $d, TableQuery $q, string $uid ): string {
		$names    = TableQuery::arg_names( $d );
		$view_key = self::view_filter( $d );
		$filters  = self::toolbar_filters( $d );
		$search   = '' !== $d->search_label();
		$post     = $search && 'post' === $d->search_transport();
		$visible  = self::toolbar_visible( $d );
		$has_form = $visible || count( self::page_sizes( $d ) ) > 1;
		$html     = '';
		if ( $post ) {
			$html .= '<form class="rooster-lms-table__search-form" method="post" action="' . esc_url( $q->url( $d ) ) . '" role="search">';
			$html .= wp_nonce_field( TableQuery::SEARCH_ACTION, TableQuery::SEARCH_NONCE, false, false );
			$html .= self::search_field( $d, $q, $names['search'], $uid );
			$html .= '</form>';
		}
		if ( ! $has_form ) {
			return $html;
		}
		$base   = TableQuery::strip( $d, $d->base_url() );
		$action = explode( '?', $base, 2 )[0];
		$view   = '' !== $view_key ? $q->filter( $view_key ) : '';
		$view   = is_string( $view ) ? $view : '';
		$kit    = Ui::kit_markup();
		$html  .= '<form class="' . ( $kit ? 'rooster-admin-filters' : 'rooster-lms-table__filters' ) . '" id="' . esc_attr( $uid . '-filters' ) . '" method="get" action="' . esc_url( '' === $action ? home_url( '/' ) : $action ) . '"' . ( $post ? '' : ' role="search"' ) . ' data-rl-toolbar="1"' . ( $visible ? '' : ' hidden' ) . '>';
		$html  .= self::hidden_args( $base );
		if ( '' !== $view ) {
			$html .= '<input type="hidden" name="' . esc_attr( $names['filters'][ $view_key ] ) . '" value="' . esc_attr( $view ) . '" data-rl-view-arg="1" />';
		}
		$active = '' !== $q->search || array() !== array_diff_key( $q->filters, '' !== $view_key ? array( $view_key => 1 ) : array() );
		$clear  = '' !== $view ? add_query_arg( $names['filters'][ $view_key ], rawurlencode( $view ), $base ) : $base;
		$cells = $search && ! $post ? self::search_field( $d, $q, $names['search'], $uid ) : '';
		$toggles = '';
		foreach ( $filters as $filter ) {
			$control = self::filter_control( $filter, $q, $names['filters'][ $filter->key ] ?? $filter->key, $uid );
			if ( ! $kit && Filter::TOGGLE === $filter->type ) {
				$toggles .= $control;
			} else {
				$cells .= $control;
			}
		}
		if ( 'keyset' !== $d->paging() && '' !== $q->orderby ) {
			$html .= '<input type="hidden" name="' . esc_attr( $names['orderby'] ) . '" value="' . esc_attr( $q->orderby ) . '" /><input type="hidden" name="' . esc_attr( $names['order'] ) . '" value="' . esc_attr( $q->order ) . '" />';
		}
		if ( $kit ) {
			$html .= $cells;
			$html .= '<div class="rooster-admin-filters__actions">' . self::nojs_submit( __( 'Apply', 'rooster-lms' ) )
				. \Rooster\Admin\Ui::button(
					__( 'Clear filters', 'rooster-lms' ),
					array(
						'variant' => 'ghost',
						'icon'    => 'x',
						'href'    => $clear,
						'attrs'   => array(
							'data-rl-clear' => 'all',
							'hidden'        => ! $active,
						),
					)
				) . '</div>';
		} else {
			$bar = ( '' === $cells ? '' : '<div class="rooster-lms-table__filter-grid">' . $cells . '</div>' )
				. '<div class="rooster-lms-table__filter-end">' . $toggles . self::clear_link( $clear, $active ) . self::nojs_submit( __( 'Apply', 'rooster-lms' ) ) . '</div>';
			if ( $visible && FilterPanel::wanted() ) {
				$set = count( array_diff_key( $q->filters, '' !== $view_key ? array( $view_key => 1 ) : array() ) ) + ( '' !== $q->search && $search && ! $post ? 1 : 0 );
				$bar = FilterPanel::html( $bar, $set );
			}
			$html .= $bar;
		}
		return $html . '</form>';
	}

	private static function toolbar_filters( TableDefinition $d ): array {
		$view_key = self::view_filter( $d );
		return array_values( array_filter( $d->filters(), static fn( Filter $f ): bool => $f->key !== $view_key ) );
	}

	private static function toolbar_visible( TableDefinition $d ): bool {
		return array() !== self::toolbar_filters( $d ) || ( '' !== $d->search_label() && 'post' !== $d->search_transport() );
	}

	private static function page_sizes( TableDefinition $d ): array {
		return 'offset' === $d->paging() || 'keyset' === $d->paging() ? array_values( array_unique( array_map( 'intval', $d->per_page_options() ) ) ) : array();
	}

	private static function clear_link( string $url, bool $active ): string {
		return '<a class="rooster-lms-table__clear" href="' . esc_url( $url ) . '" data-rl-clear="all"' . ( $active ? '' : ' hidden' ) . '>'
			. self::icon( 'x' ) . esc_html__( 'Clear filters', 'rooster-lms' ) . '</a>';
	}

	private static function search_field( TableDefinition $d, TableQuery $q, string $name, string $uid ): string {
		$id = $uid . '-search';
		if ( Ui::kit_markup() ) {
			return '<div class="rooster-admin-filters__field"><label class="screen-reader-text" for="' . esc_attr( $id ) . '">' . esc_html( $d->search_label() ) . '</label>'
				. \Rooster\Admin\Ui::input(
					$name,
					$q->search,
					array(
						'id'           => $id,
						'type'         => 'search',
						'icon'         => 'search',
						'placeholder'  => $d->search_label(),
						'maxlength'    => (string) TableQuery::SEARCH_MAX,
						'autocomplete' => 'off',
						'attrs'        => array( 'data-rl-search' => $d->search_transport() ),
					)
				) . '</div>';
		}
		return '<div class="rooster-lms-table__search"><label class="screen-reader-text" for="' . esc_attr( $id ) . '">' . esc_html( $d->search_label() ) . '</label>' . self::icon( 'search' )
			. '<input class="rooster-lms-input" type="search" id="' . esc_attr( $id ) . '" name="' . esc_attr( $name ) . '" value="' . esc_attr( $q->search ) . '" placeholder="' . esc_attr( $d->search_label() ) . '" maxlength="' . (int) TableQuery::SEARCH_MAX . '" data-rl-search="' . esc_attr( $d->search_transport() ) . '" autocomplete="off" /></div>';
	}

	private static function filter_control( Filter $filter, TableQuery $q, string $name, string $uid ): string {
		$id      = $uid . '-' . sanitize_html_class( $filter->key );
		$current = $q->filter( $filter->key );
		if ( Filter::TOGGLE === $filter->type ) {
			$value = (string) array_key_first( array_filter( $filter->options, static fn( $label, $value ): bool => '' !== (string) $value, ARRAY_FILTER_USE_BOTH ) );
			if ( Ui::kit_markup() ) {
				return \Rooster\Admin\Ui::toggle(
					$name,
					'' !== checked( $current, $value, false ),
					array(
						'id'     => $id,
						'value'  => $value,
						'label'  => $filter->label,
						'hidden' => false,
						'attrs'  => array( 'data-rl-filter' => $filter->key ),
					)
				);
			}
			$hint = '' !== $filter->hint ? '<span class="screen-reader-text" id="' . esc_attr( $id . '-hint' ) . '">' . esc_html( $filter->hint ) . '</span>' : '';
			if ( '' !== $hint ) {
				Assets::enqueue_tip();
			}
			return '<label class="rooster-lms-table__toggle" for="' . esc_attr( $id ) . '"' . ( '' !== $hint ? ' data-rl-tip="' . esc_attr( $filter->hint ) . '"' : '' ) . '>'
				. '<input class="rooster-lms-table__toggle-input" type="checkbox" id="' . esc_attr( $id ) . '" name="' . esc_attr( $name ) . '" value="' . esc_attr( $value ) . '" data-rl-filter="' . esc_attr( $filter->key ) . '"' . checked( $current, $value, false ) . ( '' !== $hint ? ' aria-describedby="' . esc_attr( $id . '-hint' ) . '"' : '' ) . ' />'
				. '<span class="rooster-lms-table__toggle-text">' . esc_html( $filter->label ) . '</span></label>' . $hint;
		}
		$multi = Filter::MULTI === $filter->type;
		$needs = '' !== $filter->depends ? $q->filter( $filter->depends ) : 'x';
		$off   = '' === $needs || array() === $needs;
		if ( Ui::kit_markup() ) {
			$options = '';
			foreach ( $filter->options as $value => $label ) {
				$value    = (string) $value;
				$on       = $multi ? '' !== $value && in_array( $value, (array) $current, true ) : $value === $current;
				$options .= '<option value="' . esc_attr( $value ) . '"' . ( $on ? ' selected="selected"' : '' ) . '>' . esc_html( (string) $label ) . '</option>';
			}
			$select = '<select class="rooster-admin-select" id="' . esc_attr( $id ) . '" name="' . esc_attr( $name . ( $multi ? '[]' : '' ) ) . '" data-rl-filter="' . esc_attr( $filter->key ) . '"' . ( $multi ? ' multiple="multiple" data-ra-summary="1"' : '' ) . ( $off ? ' disabled="disabled"' : '' ) . '>' . $options . '</select>';
			return \Rooster\Admin\Ui::filter( $filter->label, $select, $id, $off ? array( 'tip' => $filter->hint ) : array() );
		}
		$html = '<label class="rooster-lms-table__filter" for="' . esc_attr( $id ) . '"' . ( $off && '' !== $filter->hint ? ' title="' . esc_attr( $filter->hint ) . '"' : '' ) . '><span class="rooster-lms-table__filter-label">' . esc_html( $filter->label ) . '</span>';
		$html .= '<select class="rooster-lms-select" id="' . esc_attr( $id ) . '" name="' . esc_attr( $name . ( $multi ? '[]' : '' ) ) . '" data-rl-filter="' . esc_attr( $filter->key ) . '"' . ( $multi ? ' multiple="multiple" data-rl-summary="1"' : '' ) . ( $off ? ' disabled="disabled"' : '' ) . '>';
		foreach ( $filter->options as $value => $label ) {
			$value = (string) $value;
			$on    = $multi ? '' !== $value && in_array( $value, (array) $current, true ) : $value === $current;
			$html .= '<option value="' . esc_attr( $value ) . '"' . ( $on ? ' selected="selected"' : '' ) . '>' . esc_html( (string) $label ) . '</option>';
		}
		return $html . '</select></label>';
	}

	private static function hidden_args( string $base ): string {
		$query = (string) wp_parse_url( $base, PHP_URL_QUERY );
		if ( '' === $query ) {
			return '';
		}
		$args = array();
		wp_parse_str( $query, $args );
		$html = '';
		foreach ( $args as $name => $value ) {
			if ( is_scalar( $value ) ) {
				$html .= '<input type="hidden" name="' . esc_attr( (string) $name ) . '" value="' . esc_attr( (string) $value ) . '" />';
			}
		}
		return $html;
	}

	private static function tools( TableDefinition $d, array $columns, string $uid ): string {
		$hideable = array();
		$off      = array() !== $d->bulk() ? 1 : 0;
		foreach ( $columns as $i => $column ) {
			if ( $column->hideable && '' !== $column->label && ! $column->sr_only ) {
				$hideable[] = array(
					'key'     => $column->key,
					'label'   => $column->label,
					'index'   => $i + 1 + $off,
					'visible' => $column->visible,
				);
			}
		}
		$group  = self::columns_tool( $uid, $hideable, count( array_filter( $columns, static fn( $c ): bool => '' !== $c->label && ! $c->sr_only ) ) - count( $hideable ) );
		$label  = __( 'Compact rows', 'rooster-lms' );
		$kit    = Ui::kit_markup();
		if ( $kit ) {
			$group .= \Rooster\Admin\Ui::button(
				$label,
				array(
					'icon'      => 'rows-3',
					'icon_only' => true,
					'attrs'     => array(
						'aria-pressed'    => 'false',
						'data-rl-density' => '1',
						'data-rl-js'      => '1',
					),
				)
			);
			$items  = '<div class="rooster-admin-row" data-rl-js="1">' . $group . '</div>';
		} else {
			$group .= '<button type="button" class="rooster-lms-table__tool" aria-label="' . esc_attr( $label ) . '" data-rl-tip="' . esc_attr( $label ) . '" aria-pressed="false" data-rl-density="1" data-rl-js="1">' . self::icon( 'rows' ) . '</button>';
			$items  = '<div class="rooster-lms-table__toolgroup" data-rl-js="1">' . $group . '</div>';
		}
		foreach ( $d->exports() as $export ) {
			if ( ! $export instanceof ExportLink ) {
				continue;
			}
			if ( $kit ) {
				$items .= ExportLink::URL === $export->kind
					? \Rooster\Admin\Ui::button(
						$export->label,
						array(
							'icon'  => 'download',
							'href'  => $export->target,
							'class' => 'rooster-lms-table__export',
							'attrs' => array( 'data-rl-export-url' => '1' ) + ( $export->shown ? array( 'data-rl-export-columns' => 'columns' ) : array() ),
						)
					)
					: \Rooster\Admin\Ui::button(
						$export->label,
						array(
							'icon'  => 'download',
							'class' => 'rooster-lms-table__export',
							'attrs' => array(
								'data-rl-js'     => '1',
								'data-rl-export' => $export->target,
								'data-rl-format' => $export->format,
								'data-rl-map'    => (string) wp_json_encode( (object) $export->map ),
							),
						)
					);
				continue;
			}
			if ( ExportLink::URL === $export->kind ) {
				$items .= '<a class="rooster-lms-button rooster-lms-button--outline rooster-lms-table__export" href="' . esc_url( $export->target ) . '" data-rl-export-url="1"' . ( $export->shown ? ' data-rl-export-columns="columns"' : '' ) . '>' . self::icon( 'download' ) . esc_html( $export->label ) . '</a>';
			} else {
				$items .= '<button type="button" class="rooster-lms-button rooster-lms-button--outline rooster-lms-table__export" data-rl-js="1" data-rl-export="' . esc_attr( $export->target ) . '" data-rl-format="' . esc_attr( $export->format ) . '" data-rl-map="' . esc_attr( (string) wp_json_encode( (object) $export->map ) ) . '">' . self::icon( 'download' ) . esc_html( $export->label ) . '</button>';
			}
		}
		return '<div class="rooster-lms-table__tools" role="group" aria-label="' . esc_attr__( 'Table options', 'rooster-lms' ) . '">' . $items . '</div>';
	}

	public static function columns_tool( string $uid, array $columns, int $fixed = 0 ): string {
		$menu = '';
		foreach ( $columns as $column ) {
			$menu .= '<li><label><input type="checkbox" data-rl-column="' . esc_attr( (string) $column['key'] ) . '" data-rl-index="' . (int) $column['index'] . '"' . ( ! empty( $column['visible'] ) ? ' checked="checked"' : '' ) . ' /> ' . esc_html( (string) $column['label'] ) . '</label></li>';
		}
		if ( '' === $menu ) {
			return '';
		}
		$label = __( 'Columns', 'rooster-lms' );
		if ( Ui::kit_markup() ) {
			$shown = $fixed + count( array_filter( $columns, static fn( array $c ): bool => ! empty( $c['visible'] ) ) );
			/* translators: 1: the columns shown, 2: all the columns. */
			$words = __( 'Columns %1$s of %2$s', 'rooster-lms' );
			return '<div class="rooster-lms-table__columns" data-rl-js="1">' . \Rooster\Admin\Ui::button(
				sprintf( $words, number_format_i18n( $shown ), number_format_i18n( $fixed + count( $columns ) ) ),
				array(
					'icon'  => 'columns-3',
					'size'  => 'sm',
					'attrs' => array(
						'aria-expanded'         => 'false',
						'aria-controls'         => $uid . '-columns',
						'data-rl-columns'       => '1',
						'data-rl-columns-fixed' => (string) $fixed,
						'data-rl-columns-words' => $words,
					),
				)
			) . '<ul class="rooster-lms-table__columns-menu" id="' . esc_attr( $uid . '-columns' ) . '" hidden>' . $menu . '</ul></div>';
		}
		return '<div class="rooster-lms-table__columns" data-rl-js="1"><button type="button" class="rooster-lms-table__tool" aria-label="' . esc_attr( $label ) . '" data-rl-tip="' . esc_attr( $label ) . '" aria-expanded="false" aria-controls="' . esc_attr( $uid . '-columns' ) . '" data-rl-columns="1">' . self::icon( 'columns' ) . '</button>'
			. '<ul class="rooster-lms-table__columns-menu" id="' . esc_attr( $uid . '-columns' ) . '" hidden>' . $menu . '</ul></div>';
	}

	private static function icon( string $name ): string {
		$paths = array(
			'search'   => '<circle cx="11" cy="11" r="7"/><path d="m20 20-3.5-3.5"/>',
			'columns'  => '<rect x="3" y="4" width="18" height="16" rx="2"/><path d="M9 4v16M15 4v16"/>',
			'rows'     => '<path d="M4 6h16M4 10h16M4 14h16M4 18h16"/>',
			'download' => '<path d="M12 4v11m0 0-4-4m4 4 4-4M5 20h14"/>',
			'x'        => '<path d="M18 6 6 18M6 6l12 12"/>',
		);
		return '<svg class="rooster-lms-table__icon" aria-hidden="true" focusable="false" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">' . ( $paths[ $name ] ?? '' ) . '</svg>';
	}

	private static function footer( TableDefinition $d, TableQuery $q, TablePage $page, string $uid ): string {
		if ( Ui::kit_markup() ) {
			$html = '<div role="status" aria-live="polite" data-rl-table-summary="1">' . esc_html( self::summary( $q, $page ) ) . '</div>';
			if ( 'offset' === $d->paging() || 'keyset' === $d->paging() ) {
				$html .= '<div' . self::live_attrs( $d, 'pager', 'rooster-lms-table__pager-slot' ) . '>' . self::pager( $d, $q, $page ) . '</div>';
			}
			$sizes = self::page_sizes( $d );
			if ( count( $sizes ) > 1 ) {
				$id      = $uid . '-per-page';
				$options = '';
				foreach ( $sizes as $size ) {
					$options .= '<option value="' . (int) $size . '"' . selected( $q->per_page, $size, false ) . '>' . esc_html( Format::number( $size ) ) . '</option>';
				}
				$html .= '<div class="rooster-admin-perpage"><label for="' . esc_attr( $id ) . '">' . esc_html__( 'Rows per page', 'rooster-lms' ) . '</label>'
					. '<select class="rooster-admin-select" id="' . esc_attr( $id ) . '" name="' . esc_attr( TableQuery::arg_names( $d )['per_page'] ) . '" form="' . esc_attr( $uid . '-filters' ) . '" data-rl-state-key="per_page" data-rl-native="1" data-rl-skin="none">' . $options . '</select></div>';
				if ( ! self::toolbar_visible( $d ) ) {
					$html .= self::nojs_submit( __( 'Apply', 'rooster-lms' ), $uid . '-filters' );
				}
			}
			return '<div class="rooster-admin-table__footer">' . $html . '</div>';
		}
		$html = '<p class="rooster-lms-table__summary" role="status" aria-live="polite">' . esc_html( self::summary( $q, $page ) ) . '</p>';
		if ( 'offset' === $d->paging() || 'keyset' === $d->paging() ) {
			$html .= '<div' . self::live_attrs( $d, 'pager', 'rooster-lms-table__pager-slot' ) . '>' . self::pager( $d, $q, $page ) . '</div>';
		}
		$sizes = self::page_sizes( $d );
		if ( count( $sizes ) > 1 ) {
			$id    = $uid . '-per-page';
			$html .= '<label class="rooster-lms-table__per-page" for="' . esc_attr( $id ) . '">' . esc_html__( 'Rows per page', 'rooster-lms' );
			$html .= '<select class="rooster-lms-select" id="' . esc_attr( $id ) . '" name="' . esc_attr( TableQuery::arg_names( $d )['per_page'] ) . '" form="' . esc_attr( $uid . '-filters' ) . '" data-rl-state-key="per_page" data-rl-native="1" data-rl-skin="none">';
			foreach ( $sizes as $size ) {
				$html .= '<option value="' . (int) $size . '"' . selected( $q->per_page, $size, false ) . '>' . esc_html( Format::number( $size ) ) . '</option>';
			}
			$html .= '</select></label>';
			if ( ! self::toolbar_visible( $d ) ) {
				$html .= self::nojs_submit( __( 'Apply', 'rooster-lms' ), $uid . '-filters' );
			}
		}
		return '<div class="rooster-lms-table__footer">' . $html . '</div>';
	}

	private static function chips( TableDefinition $d, TableQuery $q, TablePage $page ): string {
		$chips = $d->chips();
		if ( array() === $chips ) {
			return '';
		}
		$html = '';
		foreach ( $chips as $chip ) {
			$key   = (string) ( $chip['key'] ?? '' );
			$value = (string) ( $chip['value'] ?? '' );
			$on    = $q->filter( $key ) === $value;
			$url   = $q->url(
				$d,
				array(
					'filters' => array( $key => $on ? null : $value ),
					'page'    => 1,
					'after'   => '',
				)
			);
			$count = $page->counts[ $key ][ $value ] ?? null;
			$html .= '<a class="rooster-lms-table__chip" role="button" href="' . esc_url( $url ) . '" aria-pressed="' . ( $on ? 'true' : 'false' ) . '" data-rl-chip="' . esc_attr( $key ) . '">' . esc_html( (string) ( $chip['label'] ?? $value ) );
			if ( null !== $count ) {
				$html .= ' <span class="' . ( Ui::kit_markup() ? 'rooster-admin-badge is-mono is-sm' : 'rooster-lms-badge rooster-lms-badge--sm' ) . '">' . esc_html( Format::number( (int) $count ) ) . '</span>';
			}
			$html .= '</a>';
		}
		return '<p class="rooster-lms-table__chips">' . $html . '</p>';
	}

	public static function summary( TableQuery $q, TablePage $page ): string {
		$n = count( $page->rows );
		if ( 0 === $n ) {
			return 0 === (int) $page->total || $q->page <= 1 ? __( 'No results', 'rooster-lms' ) : '';
		}
		$from = $q->offset() + 1;
		$to   = $q->offset() + $n;
		if ( null === $page->total ) {
			/* translators: 1: first row number, 2: last row number. */
			return sprintf( __( 'Showing %1$s–%2$s', 'rooster-lms' ), Format::number( $from ), Format::number( $to ) );
		}
		/* translators: 1: first row number, 2: last row number, 3: number of rows. */
		return sprintf( __( 'Showing %1$s–%2$s of %3$s', 'rooster-lms' ), Format::number( $from ), Format::number( $to ), Format::number( $page->total ) );
	}

	private static function pages( TableQuery $q, TablePage $page ): int {
		return null === $page->total ? max( 1, $q->page + ( $page->more ? 1 : 0 ) ) : max( 1, (int) ceil( $page->total / max( 1, $q->per_page ) ) );
	}

	private static function table_attrs( TableDefinition $d, array $columns ): string {
		$off    = array() !== $d->bulk() ? 1 : 0;
		$num    = array();
		$center = array();
		$hide   = array();
		foreach ( $columns as $i => $column ) {
			$n = $i + 1 + $off;
			if ( 'end' === $column->align ) {
				$num[] = $n;
			} elseif ( 'center' === $column->align ) {
				$center[] = $n;
			}
			if ( ! $column->visible ) {
				$hide[] = $n;
			}
		}
		$attrs = array( 'class' => trim( 'rooster-lms-table ' . $d->table_class() ) );
		if ( array() !== $num ) {
			$attrs['data-rl-num'] = implode( ' ', $num );
		}
		if ( array() !== $center ) {
			$attrs['data-rl-center'] = implode( ' ', $center );
		}
		$attrs['data-rl-hide'] = implode( ' ', $hide );
		return self::attrs( $attrs );
	}

	private static function head( TableDefinition $d, TableQuery $q, array $columns ): string {
		$html = '<tr>';
		if ( array() !== $d->bulk() ) {
			$html .= '<td class="rooster-lms-table__check' . ( Ui::kit_markup() ? ' rooster-admin-table__th is-check' : '' ) . '"><input type="checkbox" data-rl-select-all="1" aria-label="' . esc_attr__( 'Select every row on this page', 'rooster-lms' ) . '" />' . self::bulk_bar( $d->bulk() ) . '</td>';
		}
		foreach ( $columns as $column ) {
			if ( ! $column->sortable ) {
				$html .= self::plain_head( $column );
				continue;
			}
			$current = $q->orderby === $column->key;
			$sort    = $current ? ( 'asc' === $q->order ? 'ascending' : 'descending' ) : 'none';
			$next    = $current && 'asc' === $q->order ? 'desc' : 'asc';
			$url     = $q->url(
				$d,
				array(
					'orderby' => $column->key,
					'order'   => $next,
					'page'    => 1,
					'after'   => '',
				)
			);
			$sr      = '';
			if ( $current ) {
				$sr = '<span class="screen-reader-text">' . esc_html( 'asc' === $q->order ? __( ', sorted ascending', 'rooster-lms' ) : __( ', sorted descending', 'rooster-lms' ) ) . '</span>';
			}
			$label = $column->sr_only ? '<span class="screen-reader-text">' . esc_html( $column->label ) . '</span>' : esc_html( $column->label );
			if ( Ui::kit_markup() ) {
				$html .= '<th scope="col" class="rooster-admin-table__th" aria-sort="' . esc_attr( $sort ) . '" data-column="' . esc_attr( $column->key ) . '"><a class="rooster-admin-table__sort' . ( $current ? ' is-on' : '' ) . '" href="' . esc_url( $url ) . '" data-rl-sort="' . esc_attr( $column->key ) . '">' . $label . $sr . self::sort_chevron() . '</a></th>';
				continue;
			}
			$html .= '<th scope="col" aria-sort="' . esc_attr( $sort ) . '" data-column="' . esc_attr( $column->key ) . '"><a class="rooster-lms-table__sort" href="' . esc_url( $url ) . '" data-rl-sort="' . esc_attr( $column->key ) . '">' . $label . $sr . '<span aria-hidden="true" class="rooster-lms-table__sort-icon"></span></a></th>';
		}
		return $html . '</tr>';
	}

	private static function plain_head( Column $column ): string {
		$label = $column->sr_only ? '<span class="screen-reader-text">' . esc_html( $column->label ) . '</span>' : esc_html( $column->label );
		if ( '' !== $column->html ) {
			$label = '<span aria-hidden="true">' . $column->html . '</span><span class="screen-reader-text">' . esc_html( $column->label ) . '</span>';
		}
		return '<th scope="col"' . self::th_class() . ( $column->data_column ? ' data-column="' . esc_attr( $column->key ) . '"' : '' ) . '>' . $label . '</th>';
	}

	private static function th_class(): string {
		return Ui::kit_markup() ? ' class="rooster-admin-table__th"' : '';
	}

	public static function sort_chevron(): string {
		return '<svg class="rooster-admin-ico" width="12" height="12" viewbox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" focusable="false"><path d="m6 9 6 6 6-6" /></svg>';
	}

	private static function body( TableDefinition $d, TableQuery $q, TablePage $page, array $columns ): string {
		if ( array() === $page->rows ) {
			$span = count( $columns ) + ( array() !== $d->bulk() ? 1 : 0 );
			return '<tr class="rooster-lms-table__empty"><td colspan="' . (int) max( 1, $span ) . '">' . esc_html( $d->empty_text( $q->filtered() ) ) . '</td></tr>';
		}
		$html = '';
		foreach ( $page->rows as $row ) {
			$html .= $d->row( $row );
		}
		return $html;
	}

	private static function pager( TableDefinition $d, TableQuery $q, TablePage $page ): string {
		$labels = $d->labels();
		if ( 'keyset' === $d->paging() ) {
			$first = '' !== $q->after ? $q->url(
				$d,
				array(
					'after' => '',
					'page'  => 1,
				)
			) : '';
			$more  = $page->more && '' !== $page->after ? $q->url(
				$d,
				array(
					'after' => $page->after,
					'page'  => $q->page + 1,
				)
			) : '';
			return Pager::keyset( $first, $more, $labels['first'] ?? __( 'First page', 'rooster-lms' ), $labels['more'] ?? __( 'Next page', 'rooster-lms' ) );
		}
		if ( 'offset' !== $d->paging() ) {
			return '';
		}
		if ( null === $page->total ) {
			return Pager::steps(
				$q->page > 1 ? $q->url( $d, array( 'page' => $q->page - 1 ) ) : '',
				$page->more ? $q->url( $d, array( 'page' => $q->page + 1 ) ) : ''
			);
		}
		return Pager::offset( $q->page, self::pages( $q, $page ), static fn( int $n ): string => $q->url( $d, array( 'page' => $n ) ) );
	}

	private static function bulk_bar( array $actions ): string {
		/* translators: %s: number of selected rows. */
		$count = sprintf( __( '%s selected', 'rooster-lms' ), Format::number( 0 ) );
		$html  = '<div class="rooster-lms-table__bulk" role="group" aria-label="' . esc_attr__( 'Bulk actions', 'rooster-lms' ) . '" hidden><span class="rooster-lms-table__bulk-count">' . esc_html( $count ) . '</span>';
		$kit   = Ui::kit_markup();
		foreach ( $actions as $action ) {
			if ( ! $action instanceof BulkAction ) {
				continue;
			}
			if ( $kit ) {
				$html .= self::kit_button(
					$action->label,
					$action->variant,
					array(
						'name'            => 'rl_bulk',
						'value'           => $action->key,
						'data-rl-confirm' => '' !== $action->confirm ? $action->confirm : false,
					),
					'submit'
				);
				continue;
			}
			$html .= '<button type="submit" name="rl_bulk" value="' . esc_attr( $action->key ) . '" class="rooster-lms-button rooster-lms-button--sm rooster-lms-button--' . esc_attr( sanitize_html_class( $action->variant ) ) . '"' . ( '' !== $action->confirm ? ' data-rl-confirm="' . esc_attr( $action->confirm ) . '"' : '' ) . '>' . esc_html( $action->label ) . '</button>';
		}
		if ( $kit ) {
			return $html . self::kit_button(
				__( 'Clear selection', 'rooster-lms' ),
				'ghost',
				array(
					'data-rl-bulk-clear' => '1',
					'data-rl-js'         => '1',
				)
			) . '</div>';
		}
		return $html . '<button type="button" class="rooster-lms-table__bulk-clear" data-rl-bulk-clear="1" data-rl-js="1">' . esc_html__( 'Clear selection', 'rooster-lms' ) . '</button></div>';
	}

	public static function kit_button( string $label, string $variant, array $attrs = array(), string $type = 'button' ): string {
		$variant = array(
			'secondary' => 'outline',
			'dim'       => 'ghost',
		)[ $variant ] ?? $variant;
		$class   = 'rooster-admin-button' . ( in_array( $variant, array( 'primary', 'ghost', 'destructive', 'mono' ), true ) ? ' rooster-admin-button--' . $variant : '' ) . ' rooster-admin-button--sm';
		return '<button' . self::attrs( array( 'class' => $class ) + $attrs + array( 'type' => 'submit' === $type ? 'submit' : 'button' ) ) . '>' . esc_html( $label ) . '</button>';
	}

	private static function attrs( array $attrs ): string {
		$out = '';
		foreach ( $attrs as $name => $value ) {
			if ( false === $value ) {
				continue;
			}
			$out .= true === $value ? ' ' . esc_attr( $name ) : ' ' . esc_attr( $name ) . '="' . esc_attr( (string) $value ) . '"';
		}
		return $out;
	}
}