<?php

namespace app\controller\wechat;

use app\model\WechatUser;
use app\service\user\LoginService;
use app\util\AuthCodeUtil;
use app\util\ReturnCode;
use think\cache\driver\Redis;
use think\facade\Cache;
use think\facade\Request;
use think\Response;

class Login extends Base
{
    /**
     * @var
     */
    public $auth;
    protected $valid = \app\validate\Login::class;

    /**
     * @title 登录凭证校验
     * @return \think\Response|void
     */
    public function code2session(){

        try {
            validate($this->valid)->scene('code2session')->check(Request::post());
            $code = $this->request->param('code');
            $iv = $this->request->param('iv');
            $encryptedData = $this->request->param('encryptedData');
            $loginService = new LoginService();
            $user = $loginService->code2session($code, $iv, $encryptedData);
            return $this->buildSuccess($user);
        } catch (\Exception $e) { //错误消息 $e->getMessage()
            return $this->buildFailed($e->getCode() ?: 400,$e->getMessage());
        }
    }

    /**
     * @title 登录
     * @return \think\Response|void
     */
    public function login(){
        try {
            validate($this->valid)->scene('login')->check(Request::post());
            $phone = $this->request->post('phone');
            $openid = $this->request->post('openid');
            $unionid = $this->request->post('unionid');
            $loginService = new LoginService();
            $user = $loginService->userLogin($phone, $openid, $unionid);
            $user['token'] = $this->signToken($user);
            return $this->buildSuccess($user);
        } catch (\Exception $e) { //错误消息 $e->getMessage()
            return $this->buildFailed($e->getCode() ?: 400,$e->getMessage());
        }
    }

    /**
     *
     * @return Response
     */
    public function phoneLogin(): Response
    {
        try {
            $post = $this->request->post();
            validate($this->valid)->scene('phoneLogin')->check($post);
            $res = (new AuthCodeUtil(new Redis()))->verifyCode($post['phone'],$post['smsCode']);
            if (!$res) {
                throw new \Exception('短信验证码错误');
            }
            $loginServer = new LoginService();
            $user = $loginServer->userPhoneLogin($post['phone']);
            $user['token'] = $this->signToken($user);
            return $this->buildSuccess($user);
        }catch (\Exception $e) {
            return $this->buildFailed(ReturnCode::INVALID, $e->getMessage());
        }

    }

    /**
     * 账号密码登录
     * @return Response
     */
    public function accountLogin(): Response
    {
        try {
            $post = $this->request->post();
            validate($this->valid)->scene('accountLogin')->check($post);
            $loginServer = new LoginService();
            $user = $loginServer->userAccountLogin($post['account'], $post['password']);
            $user['token'] = $this->signToken($user);
            return $this->buildSuccess($user);
        } catch (\Exception $e) {
            return $this->buildFailed(ReturnCode::INVALID, $e->getMessage());
        }
    }

    public function getWxCode() {
        $state = md5(uniqid() . time());
        cache($state, $state, 300);

        return $this->buildSuccess([
            'appId'       => env('wechat.appid'),
            'redirectUri' => urlencode(env('wechat.redirect_uri')),
            'state'       => $state
        ]);
    }

    public function wx(): Response {
        validate($this->valid)->scene('wxLogin')->check(Request::get());
        $state = $this->request->param('state', '');
        $code = $this->request->param('code', '');

        //验证合法性
        $cacheData = Cache::has($state);
        if (!$cacheData) {
            return $this->buildFailed(ReturnCode::SESSION_TIMEOUT, 'state已过期');
        } else {
            cache($state, null);
        }

        //获取AccessToken
        $getAccessTokenUrl = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid=' .
            env('wechat.appid') . '&secret=' . env('wechat.appsecret') . '&code=' . $code .
            '&grant_type=authorization_code';

        $tokenArr = file_get_contents($getAccessTokenUrl);
        $accessTokenArr = json_decode($tokenArr, true);
        if (!$accessTokenArr || isset($accessTokenArr['errcode'])) {
            return $this->buildFailed(ReturnCode::SESSION_TIMEOUT, '获取AccessToken失败');
        }

        //获取openId
        $getUserIdUrl = 'https://api.weixin.qq.com/sns/userinfo?access_token=' . $accessTokenArr['access_token'] . '&openid=' . $accessTokenArr['openid'];
        $userIdArr = file_get_contents($getUserIdUrl);
        $userIdArr = json_decode($userIdArr, true);
        if (!$userIdArr || isset($userIdArr['errcode'])) {
            return $this->buildFailed(ReturnCode::SESSION_TIMEOUT, '获取用户信息失败');
        }

        return $this->doLogin($userIdArr['openid'], [
            'nickname' => $userIdArr['nickname'],
            'head_img' => $userIdArr['headimgurl']
        ]);
    }

    private function doLogin(string $openid, array $userDetail): Response {
        $userInfo = (new WechatUser())->openIdUserInfo($openid);
        if (empty($userInfo)) {
            $userInfo = WechatUser::create([
                'nickname'    => $userDetail['nickname'],
                'openid'      => $openid,
                'sex'         => $userDetail['sex'] ?? 0,
                'unionid'     => $userDetail['unionid'] ?? '',
                'create_time' => time(),
                'headimgurl'  => $userDetail['head_img'],
                'last_login_time' => time()
            ]);
            $data = (new WechatUser())->getUserInfo($userInfo['id']);
        } else {
            if (!$userInfo['status']) {
                return $this->buildFailed(ReturnCode::LOGIN_ERROR, '用户已被封禁，请联系管理员');
            }
            unset($userInfo['status']);
            (new WechatUser())->addLoginTime($userInfo['id']);
            $data = $userInfo;
        }


        $data['token'] = $this->signToken($data);
        return $this->buildSuccess($data->toArray(), '登录成功');
    }

    public function userLogout()
    {

    }
}