<?php

namespace ABeCe\Booking\Service;

use ABeCe\Booking\Domain\CatalogException;

final class CatalogValidator {
	public const ACCESS_MODES = [ 'public', 'members_only', 'members_priority' ];

	public static function common( array $input, array $current ): array {
		$data = array_replace( [ 'name' => '', 'slug' => '', 'description' => null, 'is_active' => true, 'sort_order' => 0 ], $current, $input );
		if ( ! is_string( $data['name'] ) || '' === trim( sanitize_text_field( $data['name'] ) ) ) {
			self::invalid( 'name', __( 'Name is required.', 'abece-booking' ) );
		}
		$data['name'] = sanitize_text_field( $data['name'] );
		if ( mb_strlen( $data['name'] ) > 150 ) {
			self::invalid( 'name', __( 'Name must not exceed 150 characters.', 'abece-booking' ) );
		}
		if ( ! is_string( $data['slug'] ) ) {
			self::invalid( 'slug', __( 'Slug must be text.', 'abece-booking' ) );
		}
		$data['slug'] = sanitize_title( '' === trim( $data['slug'] ) ? $data['name'] : $data['slug'] );
		if ( '' === $data['slug'] || strlen( $data['slug'] ) > 150 ) {
			self::invalid( 'slug', __( 'Slug is required and must not exceed 150 characters.', 'abece-booking' ) );
		}
		if ( null !== $data['description'] && ! is_string( $data['description'] ) ) {
			self::invalid( 'description', __( 'Description must be text.', 'abece-booking' ) );
		}
		$data['description'] = null === $data['description'] ? null : sanitize_textarea_field( $data['description'] );
		$data['is_active'] = self::boolean( $data['is_active'], 'is_active' );
		$data['sort_order'] = self::integer( $data['sort_order'], 'sort_order', -2147483648, 2147483647 );
		return $data;
	}

	public static function boolean( mixed $value, string $field ): bool {
		if ( ! is_bool( $value ) ) {
			self::invalid( $field, __( 'A boolean value is required.', 'abece-booking' ) );
		}
		return $value;
	}

	public static function integer( mixed $value, string $field, int $min, int $max, bool $nullable = false ): ?int {
		if ( null === $value && $nullable ) {
			return null;
		}
		if ( ! is_int( $value ) || $value < $min || $value > $max ) {
			self::invalid( $field, __( 'An integer within the allowed range is required.', 'abece-booking' ) );
		}
		return $value;
	}

	public static function choice( mixed $value, string $field, array $allowed ): string {
		if ( ! is_string( $value ) || ! in_array( $value, $allowed, true ) ) {
			self::invalid( $field, __( 'The selected value is not allowed.', 'abece-booking' ) );
		}
		return $value;
	}

	public static function invalid( string $field, string $message ): never {
		throw new CatalogException( 'abece_booking_invalid_field', $message, 400, $field );
	}
}