<?php

/**
 * @author Any
 * @description KISS
 * @date 2020-12-3
 * @version 1.0.0
 *
 * _____LOG_____
 *
 */

namespace app\modules\api\models;


use app\models\User;
use app\components\auth\AToken;
use app\components\wechat\aes\WxBizDataCrypt;
use app\models\UserOauth;
use app\models\common\CommonUserEditForm;
use app\components\SysConst;
use app\components\FlashStorage;

class LoginByWxoaForm extends ApiModel
{
    public $code;


    public $code_expires;//code是否过期，0=否，1=是

    public $cx_mch_id;
    public $token_type;
    public $wechat_mp;


    public function rules()
    {
        return [
            [['code'], 'trim'],
            [['code'], 'string'],
            [['code_expires'], 'integer'],
            [['code', 'token_type', 'wechat_mp'], 'required'],
        ];
    }

    public function login()
    {
        if (!$this->validate()) {
            return $this->getModelError();
        }
        $res = FlashStorage::getCache("m{$this->cx_mch_id}_c{$this->code}");
        if ($this->code_expires == 1 || $res === false) {
            $res = $this->code2session($this->code);
            if ($res['code'] != 0)
                return $res;
            FlashStorage::setCache("m{$this->cx_mch_id}_c{$this->code}", $res, 864000);
        }


        $session_key = $res['data']['session_key'];
        $openid = $res['data']['openid'];
        $unionid = isset($res['data']['unionid']) ? $res['data']['unionid'] : null;
        $res = $this->decrypted_data($session_key);
        if ($res['code'] != 0) {
            return $res;
        }
        $decrypted_info = json_decode($res['data'], true);
        $openid = $openid ? $openid : $decrypted_info['openId'];
        $nickname = $decrypted_info['nickName'];
        $avatar_url = empty($decrypted_info['avatarUrl']) ? User::DEFAULT_AVATAR_URL : $decrypted_info['avatarUrl'];
        $gender = $decrypted_info['gender'];
        if ($unionid == null) {
            $unionid = isset($decrypted_info['unionId']) ? $decrypted_info['unionId'] : '0';
        }

        //用户是否存在
        $user_oauth = null;
        if ($unionid != 0) {
            //优选使用unionid
            $user_oauth = UserOauth::findOne([
                'cx_mch_id' => $this->cx_mch_id,
                'is_delete' => 0,
                'unionid' => $unionid
            ]);
        }
        if ($user_oauth == null) {
            $user_oauth = UserOauth::findOne([
                'cx_mch_id' => $this->cx_mch_id,
                'is_delete' => 0,
                'type' => SysConst::$cxOauthProviderWxmp,
                'openid' => $openid
            ]);
        }

        $t = \Yii::$app->db->beginTransaction();
        if ($user_oauth != null) {
            //用户是否存在
            $user = User::findOne([
                'id' => $user_oauth->user_id,
                'is_delete' => 0,
                'cx_mch_id' => $this->cx_mch_id,
                'status' => User::STATUS_NORMAL
            ]);
            if ($user == null) {
                \Yii::error("[LoginByWxmpForm] 用户(ID:{$user_oauth->user_id})不存在");
                return [
                    'code' => 1,
                    'msg' => '系统内部异常，请联系管理员'
                ];
            }
        } else {
            $form = new CommonUserEditForm();
            $form->scenario = 'wxmp_signup';
            $form->model = new User();
            $form->cx_mch_id = $this->cx_mch_id;
            $form->username = User::generateUsername(3, "wx", 6);
            $form->nickname = $nickname;
            $form->avatar_url = $avatar_url;
            $form->access_token = \Yii::$app->security->generateRandomString();
            $form->gender = $gender;
            $form->is_modify_un = 1;
            $res = $form->save();
            if ($res['code'] != 0)
                return $res;

            $user = $form->model;

            $user_oauth = new UserOauth();
            $user_oauth->cx_mch_id = $this->cx_mch_id;
            $user_oauth->type = SysConst::$cxOauthProviderWxmp;
            $user_oauth->user_id = $user->id;
            $user_oauth->openid = $openid;
            $user_oauth->unionid = $unionid;
            $user_oauth->is_delete = 0;
            $user_oauth->created_at = time();
        }
        //更新用户信息
        $user_oauth->nickname = $nickname;
        $user_oauth->avatar_url = $avatar_url;
        if ($unionid !== 0 && $user_oauth->unionid == 0) {
            $user_oauth->unionid = $unionid;
        }
        if (!$user_oauth->save()) {
            $t->rollBack();
            return $this->getModelError($user_oauth);
        }
        if (!\Yii::$app->user->login($user)) {
            $t->commit();
            return [
                'code' => 1,
                'msg' => '登录失败'
            ];
        }
        $args = [];
        $args['cx_mch_id'] = $this->cx_mch_id;
        $args['token_type'] = $this->token_type;
        $atoken = new AToken($args);
        $data = $atoken->generate_access_token();
        if ($data['code'] == 0) {
            $err_msg = "微信小程序登录成功";
            User::lastLogin($user->id, 1, $err_msg, $this->cx_mch_id);
        }
        $t->commit();
        //是否需要绑定
        $data = User::bindQuery($user_oauth->user, $data);
        return $data;
    }


    /***
     * 用户数据解密
     */
    private function decrypted_data($session_key)
    {
        $pc = new WxBizDataCrypt($this->wechat_mp->appId, $session_key);
        $errCode = $pc->decryptData($this->encrypted_data, $this->iv, $data);
        if ($errCode == 0) {
            return [
                'code' => 0,
                'msg' => 'success',
                'data' => $data
            ];
        } else {
            return [
                'code' => 1,
                'msg' => $errCode,
            ];
        }
    }

    private function code2session($code)
    {
        $api = "https://api.weixin.qq.com/sns/oauth2/access_token?appid={$this->wechat_mp->appId}&secret={$this->wechat_mp->appSecret}&code=" . $code . "&grant_type=authorization_code";
        $this->wechat_mp->curl->get($api);
        if ($this->wechat_mp->curl->error_code != 0) {
            return [
                'code' => 1,
                'msg' => "err_code:{$this->wechat_mp->curl->error_code}err_msg:{$this->wechat_mp->curl->error_msg}"
            ];
        }
        $resp = $this->wechat_mp->curl->response;
        $res = json_decode($resp, true);
        if (!isset($res['access_token']) || !isset($res['openid'])) {
            return [
                'code' => 1,
                'msg' => isset($res['errmsg']) ? $res['errmsg'] : 'error'
            ];
        }
        return [
            'code' => 0,
            'msg' => 'ok',
            'data' => $res
        ];
    }
}