<?php

declare(strict_types=1);

namespace RenzoJohnson\Blocks\Transfer;

\defined( 'ABSPATH' ) || exit;

final class BlockTransferRepository {

	/** @return list<\Blocks> */
	public function all(): array {
		$blocks = array();

		foreach ( \Blocks::find( array( 'posts_per_page' => -1 ) ) as $block ) {
			if ( $block instanceof \Blocks ) {
				$blocks[] = $block;
			}
		}

		return $blocks;
	}

	public function find( string $title, string $requested_locale, string $effective_locale ): ?\Blocks {
		$locale_clause = '' === $requested_locale
			? array(
				'relation' => 'OR',
				array(
					'key'     => '_locale',
					'compare' => 'NOT EXISTS',
				),
				array(
					'key'     => '_locale',
					'value'   => '',
					'compare' => '=',
				),
				array(
					'key'     => '_locale',
					'value'   => $effective_locale,
					'compare' => '=',
				),
			)
			: array(
				'key'     => '_locale',
				'value'   => $requested_locale,
				'compare' => '=',
			);

		$query = new \WP_Query(
			array(
				'post_type'              => \Blocks::POST_TYPE,
				'post_status'            => 'any',
				'title'                  => $title,
				'posts_per_page'         => 1,
				'fields'                 => 'ids',
				'no_found_rows'          => true,
				'ignore_sticky_posts'    => true,
				'update_post_meta_cache' => false,
				'update_post_term_cache' => false,
				// phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query -- Locale is part of the transfer identity contract.
				'meta_query'             => array( $locale_clause ),
			),
		);

		$post_id = $query->posts[0] ?? null;

		if ( ! \is_int( $post_id ) && ! ( \is_string( $post_id ) && \ctype_digit( $post_id ) ) ) {
			return null;
		}

		$block = \Blocks::get_instance( (int) $post_id );

		return $block instanceof \Blocks ? $block : null;
	}

	public function sync_feature_indexes( \Blocks $block, int $post_id ): void {
		\update_post_meta( $post_id, '_blocks_popup_enabled', \absint( $block->prop( 'popup_enabled' ) ) );
		\update_post_meta( $post_id, '_blocks_banner_enabled', \absint( $block->prop( 'banner_enabled' ) ) );
	}

	/**
	 * @param list<string> $categories Category names.
	 * @param list<string> $tags       Tag names.
	 */
	public function assign_terms( int $post_id, array $categories, array $tags ): bool|\WP_Error {
		foreach ( array(
			'blocks_category' => $categories,
			'blocks_tag'      => $tags,
		) as $taxonomy => $names ) {
			$result = \wp_set_object_terms( $post_id, $names, $taxonomy );

			if ( \is_wp_error( $result ) ) {
				return $result;
			}
		}

		return true;
	}

	/** @return list<string> */
	public function term_names( int $post_id, string $taxonomy ): array {
		$terms = \get_the_terms( $post_id, $taxonomy );

		if ( ! \is_array( $terms ) ) {
			return array();
		}

		$names = array();

		foreach ( $terms as $term ) {
			if ( $term instanceof \WP_Term ) {
				$names[] = $term->name;
			}
		}

		return $names;
	}
}