<?php

namespace Jxlwqq\IdValidator;

/**
 * Trait Checker.
 */
trait Checker
{
    /**
     * 检查并拆分身份证号.
     *
     * @param string $id 身份证号
     *
     * @return array|bool
     */
    private function _checkIdArgument($id)
    {
        $id = strtoupper($id);
        $length = strlen($id);
        $code = false;
        switch ($length) {
            case 18:
                $code = [
                    'body'         => substr($id, 0, 17),
                    'addressCode'  => substr($id, 0, 6),
                    'birthdayCode' => substr($id, 6, 8),
                    'order'        => substr($id, 14, 3),
                    'checkBit'     => substr($id, -1),
                    'type'         => 18,
                ];
                break;
            case 15:
                $code = [
                    'body'         => $id,
                    'addressCode'  => substr($id, 0, 6),
                    'birthdayCode' => '19'.substr($id, 6, 6),
                    'order'        => substr($id, 12, 3),
                    'checkBit'     => '',
                    'type'         => 15,
                ];
                break;
        }

        return $code;
    }

    /**
     * 检查地址码
     *
     * @param string $addressCode 地址码
     *
     * @return bool
     */
    private function _checkAddressCode($addressCode)
    {
        $addressInfo = $this->_getAddressInfo($addressCode);

        return $addressInfo ? true : false;
    }

    /**
     * 检查顺序码
     *
     * @param string $orderCode 顺序码
     *
     * @return bool
     */
    private function _checkOrderCode($orderCode)
    {
        if (strlen($orderCode) == 3) {
            return true;
        } else {
            return false;
        }
    }

    /**
     * 检查出生日期码
     *
     * @param string $birthdayCode 出生日期码
     *
     * @return bool
     */
    private function _checkBirthdayCode($birthdayCode)
    {
        $year = intval(substr($birthdayCode, 0, 4));
        $month = intval(substr($birthdayCode, 4, 2));
        $day = intval(substr($birthdayCode, -2));

        if ($year < 1800) {
            return false;
        }
        if ($month > 12 || $month === 0 || $day > 31 || $day === 0) {
            return false;
        }

        return true;
    }
}