<?php
/**
 * Server-side rendering of the `core/query-total` block.
 *
 * @package WordPress
 */

/**
 * Renders the `query-total` block on the server.
 *
 * @since 6.8.0
 *
 * @global WP_Query $wp_query WordPress Query object.
 *
 * @param array    $attributes Block attributes.
 * @param string   $content    Block default content.
 * @param WP_Block $block      Block instance.
 *
 * @return string The rendered block content.
 */
function render_block_core_query_total( $attributes, $content, $block ) {
    global $wp_query;
    $wrapper_attributes = get_block_wrapper_attributes();
    if ( $block->context['query']['inherit'] ?? false ) {
        $query_to_use = $wp_query;
        $current_page = max( 1, (int) get_query_var( 'paged', 1 ) );
    } else {
        $page_key     = isset( $block->context['queryId'] ) ? 'query-' . $block->context['queryId'] . '-page' : 'query-page';
        $current_page = (int) ( $_GET[ $page_key ] ?? 1 );
        $query_to_use = new WP_Query( build_query_vars_from_query_block( $block, $current_page ) );
    }

    $max_rows       = $query_to_use->found_posts;
    $posts_per_page = (int) $query_to_use->get( 'posts_per_page' );

    // Calculate the range of posts being displayed.
    $start = ( 0 === $max_rows ) ? 0 : ( ( $current_page - 1 ) * $posts_per_page + 1 );
    $end   = min( $start + $posts_per_page - 1, $max_rows );

    // Prepare the display based on the `displayType` attribute.
    $output = '';
    switch ( $attributes['displayType'] ) {
        case 'range-display':
            if ( $start === $end ) {
                $output = sprintf(
                    /* translators: 1: Start index of posts, 2: Total number of posts */
                    __( 'Displaying %1$s of %2$s' ),
                    $start,
                    $max_rows
                );
            } else {
                $output = sprintf(
                    /* translators: 1: Start index of posts, 2: End index of posts, 3: Total number of posts */
                    __( 'Displaying %1$s – %2$s of %3$s' ),
                    $start,
                    $end,
                    $max_rows
                );
            }

            break;

        case 'total-results':
        default:
            // translators: %d: number of results.
            $output = sprintf( _n( '%d result found', '%d results found', $max_rows ), $max_rows );
            break;
    }

    return sprintf(
        '<div %1$s>%2$s</div>',
        $wrapper_attributes,
        $output
    );
}

/**
 * Registers the `query-total` block.
 *
 * @since 6.8.0
 */
function register_block_core_query_total() {
    register_block_type_from_metadata(
        __DIR__ . '/query-total',
        array(
            'render_callback' => 'render_block_core_query_total',
        )
    );
}
add_action( 'init', 'register_block_core_query_total' );