<?php
/**
 * Blocks and Query Loop integration.
 *
 * @package Blockmason_Core
 */

namespace Blockmason\Core;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Registers the plugin blocks from their block.json files.
 */
function register_blocks() {
	$blocks = array( 'project-details', 'before-after', 'team-details', 'service-icon', 'testimonials' );

	foreach ( $blocks as $block ) {
		$type = register_block_type( DIR . 'blocks/' . $block );

		if ( $type && ! empty( $type->editor_script_handles ) ) {
			foreach ( $type->editor_script_handles as $handle ) {
				wp_set_script_translations( $handle, 'blockmason-core', DIR . 'languages' );
			}
		}
	}
}

/**
 * Filters the "Projects of this service" Query Loop so it only shows the
 * projects linked to the service being viewed.
 *
 * @param array     $query Query vars.
 * @param \WP_Block $block The Post Template block.
 * @return array
 */
function service_projects_query( $query, $block ) {
	if ( empty( $block->context['query']['bmRelatedToService'] ) ) {
		return $query;
	}

	$service_id = 0;
	if ( isset( $block->context['postType'], $block->context['postId'] ) && 'bm_service' === $block->context['postType'] ) {
		$service_id = (int) $block->context['postId'];
	} elseif ( is_singular( 'bm_service' ) ) {
		$service_id = (int) get_queried_object_id();
	}

	if ( ! $service_id ) {
		// Not on a service: show nothing rather than unrelated projects.
		$query['post__in'] = array( 0 );
		return $query;
	}

	$query['post_type']  = 'bm_project';
	$query['meta_query'] = array( // phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query -- Indexed meta key, small result set.
		array(
			'key'   => 'bm_services',
			'value' => $service_id,
			'type'  => 'NUMERIC',
		),
	);

	return $query;
}

/**
 * Leaves the current post out of a Query Loop that sets "bmExcludeCurrent",
 * e.g. "More projects" under a single project.
 *
 * @param array    $query Query vars.
 * @param WP_Block $block Query Loop block.
 * @return array
 */
function exclude_current_query( $query, $block ) {
	if ( empty( $block->context['query']['bmExcludeCurrent'] ) || ! is_singular() ) {
		return $query;
	}

	$exclude                = isset( $query['post__not_in'] ) ? (array) $query['post__not_in'] : array();
	$exclude[]              = (int) get_queried_object_id();
	$query['post__not_in']  = array_values( array_unique( array_filter( array_map( 'intval', $exclude ) ) ) ); // phpcs:ignore WordPressVIPMinimum.Performance.WPQueryParams.PostNotIn_post__not_in -- One ID, three results.
	$query['orderby']       = 'rand';
	$query['no_found_rows'] = true;

	return $query;
}

/**
 * Formats a project area for display, e.g. "1,250 m²".
 *
 * @param float $area Area in square metres.
 * @return string
 */
function format_area( $area ) {
	$area     = (float) $area;
	$decimals = floor( $area ) === $area ? 0 : 1;

	/* translators: %s: area in square metres. */
	return sprintf( __( '%s m²', 'blockmason-core' ), number_format_i18n( $area, $decimals ) );
}

/**
 * Resolves the post a block should read its fields from.
 *
 * @param \WP_Block $block     Block instance.
 * @param string    $post_type Expected post type.
 * @return int Post ID, or 0.
 */
function context_post_id( $block, $post_type ) {
	$post_id = isset( $block->context['postId'] ) ? (int) $block->context['postId'] : (int) get_the_ID();

	return $post_id && get_post_type( $post_id ) === $post_type ? $post_id : 0;
}

/**
 * Hides a section with the class "blockmason-service-projects" on a service
 * that has no linked projects, so the page does not show an empty heading.
 *
 * @param string $block_content Rendered block.
 * @param array  $block         Parsed block.
 * @return string
 */
function hide_empty_service_projects( $block_content, $block ) {
	if ( empty( $block['attrs']['className'] ) || ! str_contains( $block['attrs']['className'], 'blockmason-service-projects' ) || ! is_singular( 'bm_service' ) ) {
		return $block_content;
	}

	$linked = get_posts(
		array(
			'post_type'      => 'bm_project',
			'posts_per_page' => 1,
			'fields'         => 'ids',
			'no_found_rows'  => true,
			'meta_query'     => array( // phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query -- One small lookup per service page.
				array(
					'key'   => 'bm_services',
					'value' => (int) get_queried_object_id(),
					'type'  => 'NUMERIC',
				),
			),
		)
	);

	return $linked ? $block_content : '';
}