<?php

namespace App\Http\Controllers\Mobile;

use App\Helpers\ResponseCode;
use App\Helpers\StarterResponseCode;
use App\Http\Controllers\Controller;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Validator;

class CommonController extends Controller
{
    public $guardName = "mobile";

    public function guard()
    {
        return auth()->guard($this->guardName);
    }

    public function getUser()
    {
        return $this->guard()->user();
    }

    public function getUserId()
    {
        return $this->guard()->id();
    }

    /**
     * @OA\Post(
     *     path="/api/mobile/validate-idcard",
     *     summary="验证身份证号码",
     *     description="验证身份证号码是否合法正规",
     *     tags={"移动端-通用接口"},
     *     @OA\RequestBody(
     *         required=true,
     *         @OA\JsonContent(
     *             @OA\Property(property="idcard", type="string", description="身份证号码", example="110101199003071234")
     *         )
     *     ),
     *     @OA\Response(
     *         response=200,
     *         description="验证成功",
     *         @OA\JsonContent(
     *             @OA\Property(property="code", type="integer", example=0),
     *             @OA\Property(property="message", type="string", example="success"),
     *             @OA\Property(property="data", type="boolean", description="身份证号码是否有效", example=true)
     *         )
     *     ),
     *     @OA\Response(
     *         response=422,
     *         description="参数错误",
     *         @OA\JsonContent(
     *             @OA\Property(property="code", type="integer", example=1001),
     *             @OA\Property(property="message", type="string", example="身份证号码必填")
     *         )
     *     )
     * )
     */
    public function validateIdcard()
    {
        $all = request()->all();
        $messages = [
            'idcard.required' => '身份证号码必填'
        ];
        $validator = Validator::make($all, [
            'idcard' => 'required'
        ], $messages);

        if ($validator->fails()) {
            return response()->json([
                'code' => ResponseCode::ERROR_PARAMETER,
                'message' => implode(',', $validator->errors()->all()),
                'data' => null
            ], 422);
        }

        $idcard = $all['idcard'];
        $isValid = $this->isValidIdcard($idcard);

        return $this->success($isValid);
    }

    /**
     * 验证身份证号码是否有效
     */
    private function isValidIdcard($idcard)
    {
        // 基础格式验证
        if (!preg_match('/^[1-9]\d{5}(18|19|20)\d{2}(0[1-9]|1[0-2])(0[1-9]|[12]\d|3[01])\d{3}[\dXx]$/', $idcard)) {
            return false;
        }

        // 长度验证
        if (strlen($idcard) != 18) {
            return false;
        }

        // 转化为大写
        $idcard = strtoupper($idcard);

        // 加权因子
        $wi = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
        $ai = ['1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'];

        // 校验码验证
        $sigma = 0;
        for ($i = 0; $i < 17; $i++) {
            $b = (int)$idcard[$i];
            $w = $wi[$i];
            $sigma += $b * $w;
        }

        $sidcard = $sigma % 11;
        $check_idcard = $ai[$sidcard];

        if ($idcard[17] != $check_idcard) {
            return false;
        }

        // 日期验证
        $year = substr($idcard, 6, 4);
        $month = substr($idcard, 10, 2);
        $day = substr($idcard, 12, 2);

        if (!checkdate($month, $day, $year)) {
            return false;
        }

        // 年龄合理性验证
        $birthDate = $year . '-' . $month . '-' . $day;
        $age = \Carbon\Carbon::parse($birthDate)->age;

        if ($age < 0 || $age > 150) {
            return false;
        }

        return true;
    }

}