<?php

namespace classes;

use DateTimeImmutable;
use InvalidArgumentException;

class orders_input_normalizer
{
    public static function normalizeRegistrationNumber(mixed $value): string
    {
        if ($value === null) {
            return '';
        }

        if (!is_scalar($value)) {
            throw new InvalidArgumentException('registration number must be a string');
        }

        $normalized = strtoupper(trim((string)$value));
        $normalized = preg_replace('/[^A-Z0-9]/', '', $normalized);

        if (!is_string($normalized)) {
            throw new InvalidArgumentException('registration number must be a string');
        }

        return $normalized;
    }

    public static function normalizeCreatedAt(mixed $value): string
    {
        if ($value instanceof \DateTimeInterface) {
            return $value->format('Y-m-d H:i:s');
        }

        if (!is_string($value)) {
            throw new InvalidArgumentException('created_at must be a string');
        }

        $trimmed = trim($value);
        if ($trimmed === '') {
            throw new InvalidArgumentException('created_at cannot be empty');
        }

        foreach (['Y-m-d H:i:s', 'Y-m-d\TH:i:s', 'Y-m-d\TH:i'] as $format) {
            $parsed = DateTimeImmutable::createFromFormat($format, $trimmed);
            if ($parsed instanceof DateTimeImmutable && $parsed->format($format) === $trimmed) {
                return $parsed->format('Y-m-d H:i:s');
            }
        }

        throw new InvalidArgumentException('created_at must be a valid datetime');
    }

    public static function normalizeIncludeInInvoice(mixed $value): ?bool
    {
        if ($value === null) {
            return null;
        }

        if (is_bool($value)) {
            return $value;
        }

        if (is_int($value)) {
            if ($value === 1) {
                return true;
            }
            if ($value === 0) {
                return false;
            }
        }

        if (is_string($value)) {
            $normalized = strtolower(trim($value));
            return match ($normalized) {
                '', 'null', 'use_department' => null,
                '1', 'true', 'include', 'included', 'yes' => true,
                '0', 'false', 'exclude', 'excluded', 'no' => false,
                default => throw new InvalidArgumentException('include_in_invoice must be use_department, include, or exclude'),
            };
        }

        throw new InvalidArgumentException('include_in_invoice must be use_department, include, or exclude');
    }
}