<?php

namespace App\Rules;

use Illuminate\Contracts\Validation\ValidationRule;
use Illuminate\Support\Carbon;

class IsAdult implements ValidationRule
{
    /**
     * Error message
     *
     * @var string|null
     */
    private $error_message;

    /**
     * Create a new rule instance.
     *
     * @param null|string $message
     * @return void
     */
    public function __construct(?string $message = null)
    {
        $this->error_message = $message ?? trans('Vous devez être majeur.');
    }

    /**
     *  Run the validation rule.
     *
     * @param string                                                                $attribute
     * @param mixed                                                                 $value
     * @param \Closure(string): \Illuminate\Translation\PotentiallyTranslatedString $fail
     * @return void
     * @throws \RuntimeException If date cannot be parsed.
     * @phpcs:disable Squiz.Commenting.FunctionComment.IncorrectTypeHint
     */
    public function validate(string $attribute, mixed $value, \Closure $fail): void
    {
        //@phpcs:enable
        $MJ = Carbon::now()->subYears(18);

        if ($this->isIsoFormat($value)) {
            $d = Carbon::parse($value);
        }
        if ($this->isSqlDate($value)) {
            $d = Carbon::createFromFormat('Y-m-d', $value);
        }
        if ($this->isFormDate($value)) {
            $d = Carbon::createFromFormat('d/m/Y', $value);
        }
        // * Could not parse date.
        if (!$d) {
            throw new \RuntimeException("Could not parse date {$value} for attribute '{$attribute}'.");
        }
        if (!$d->lessThanOrEqualTo($MJ)) {
            $fail($this->error_message);
        }
    }

    /**
     * Check if provided string is formatted for mysql
     *
     * @param string $date
     * @return boolean
     */
    private function isSqlDate(string $date)
    {
        if (preg_match("/^[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])$/", $date)) {
            return true;
        }
        return false;
    }

    /**
     * Check if provided string is formatted DD/MM/AAAA
     *
     * @param string $date
     * @return boolean
     */
    private function isFormDate(string $date)
    {
        if (preg_match("/^(0[1-9]|[1-2][0-9]|3[0-1])\/(0[1-9]|1[0-2])\/[0-9]{4}$/", $date)) {
            return true;
        }
        return false;
    }

    /**
     * Check if provided string is iso format
     *
     * * https://www.w3.org/TR/NOTE-datetime
     *
     * @param string $date
     * @return boolean
     */
    private function isIsoFormat(string $date)
    {
        // phpcs:ignore Generic.Files.LineLength.TooLong
        if (preg_match("/^(\d{4})(?:-?W(\d+)(?:-?(\d+)D?)?|(?:-(\d+))?-(\d+))(?:[T ](\d+):(\d+)(?::(\d+)(?:\.(\d+))?)?)?(?:Z(-?\d*))?$/", $date)) {
            return true;
        }
        return false;
    }
}