<?php

namespace app\adminapi\library;

use app\admin\model\Admin;
use app\admin\model\api\AuthRule;
use app\common\library\Token;
use app\common\model\User;
use fast\Random;
use fast\Tree;
use think\Config;
use think\Cookie;
use think\Hook;
use think\Request;
use think\Session;


use think\Db;
use think\Exception;

use think\Validate;

class Auth
{
    protected static $instance = null;
    protected $_error = '';
    protected $_logined = false;
    protected $_user = null;
    protected $_token = '';
    //Token默认有效时长
    protected $keeptime = 2592000;
    protected $requestUri = '';
    protected $rules = [];
    //默认配置
    protected $config = [];
    protected $options = [];
    protected $breadcrumb = [];
    protected $allowFields = ['id', 'username', 'nickname', 'mobile', 'avatar', 'email'];

    public function __construct($options = [])
    {
        if ($config = Config::get('user')) {
            $this->config = array_merge($this->config, $config);
        }
        $this->options = array_merge($this->config, $options);
    }


    /**
     *
     * @param array $options 参数
     * @return \app\common\library\Auth
     */
    public static function instance($options = [])
    {
        if (is_null(self::$instance)) {
            self::$instance = new static($options);
        }

        return self::$instance;
    }


    /**
     * 获取User模型
     * @return User
     */
    public function getUser()
    {
        return $this->_user;
    }

    /**
     * 兼容调用user模型的属性
     *
     * @param string $name
     * @return mixed
     */
    public function __get($name)
    {
        return $this->_user ? $this->_user->$name : null;
    }

    /**
     * 兼容调用user模型的属性
     */
    public function __isset($name)
    {
        return isset($this->_user) ? isset($this->_user->$name) : false;
    }


    /**
     * 根据Token初始化
     *
     * @param string $token Token
     * @return boolean
     */
    public function init($token)
    {
        if ($this->_logined) {
            return true;
        }
        if ($this->_error) {
            return false;
        }
        $data = Token::get($token);
        if (!$data) {
            return false;
        }
        $user_id = intval($data['user_id']);
        if ($user_id > 0) {
            $user = Admin::get($user_id);
            if (!$user) {
                $this->setError('Account not exist');
                return false;
            }
            if ($user['status'] != 'normal') {
                $this->setError('Account is locked');
                return false;
            }
            $this->_user = $user;
            $this->_logined = true;
            $this->_token = $token;

            //初始化成功的事件
            Hook::listen("admin_init_successed", $this->_user);

            return true;
        } else {
            $this->setError('You are not logged in');
            return false;
        }
    }


    /**
     * 用户登录
     *
     * @param string $account  账号,用户名、邮箱、手机号
     * @param string $password 密码
     * @return boolean
     */
    public function login($account, $password, $keeptime = NULL)
    {
        $field = Validate::is($account, 'email') ? 'email' : (Validate::regex($account, '/^1\d{10}$/') ? 'mobile' : 'username');
        $admin = Admin::get([$field => $account]);
        if (!$admin) {
            $this->setError('Account is incorrect');
            return false;
        }

        if ($admin->status != 'normal') {
            $this->setError('Account is locked');
            return false;
        }

        if (Config::get('fastadmin.login_failure_retry') && $admin->loginfailure >= 10 && time() - $admin->updatetime < 86400) {
            $this->setError('Please try again after 1 day');
            return false;
        }
        if ($admin->password != $this->getEncryptPassword($password, $admin->salt)) {
            $admin->loginfailure++;
            $admin->save();
            $this->setError('Password is incorrect');
            return false;
        }
        $this->keeptime = $keeptime !== NULL ? $keeptime : $this->keeptime;

        //直接登录会员
        return $this->direct($admin->id);
    }


    /**
     * 退出
     *
     * @return boolean
     */
    public function logout()
    {
        if (!$this->_logined) {
            $this->setError('You are not logged in');
            return false;
        }
        //设置登录标识
        $this->_logined = false;
        //删除Token
        Token::delete($this->_token);
        //退出成功的事件
        Hook::listen("admin_logout_successed", $this->_user);
        return true;
    }


    /**
     * 修改密码
     * @param string $newpassword       新密码
     * @param string $oldpassword       旧密码
     * @param bool   $ignoreoldpassword 忽略旧密码
     * @return boolean
     */
    public function changepwd($newpassword, $oldpassword = '', $ignoreoldpassword = false)
    {
        if (!$this->_logined) {
            $this->setError('You are not logged in');
            return false;
        }
        //判断旧密码是否正确
        if ($this->_user->password == $this->getEncryptPassword($oldpassword, $this->_user->salt) || $ignoreoldpassword) {
            Db::startTrans();
            try {
                $salt = Random::alnum();
                $newpassword = $this->getEncryptPassword($newpassword, $salt);
                $this->_user->save(['loginfailure' => 0, 'password' => $newpassword, 'salt' => $salt]);

                Token::delete($this->_token);
                //修改密码成功的事件
                Hook::listen("admin_changepwd_successed", $this->_user);
                Db::commit();
            } catch (Exception $e) {
                Db::rollback();
                $this->setError($e->getMessage());
                return false;
            }
            return true;
        } else {
            $this->setError('Password is incorrect');
            return false;
        }
    }


    /**
     * 直接登录账号
     * @param int $user_id
     * @return boolean
     */
    public function direct($user_id)
    {
        $admin = Admin::get($user_id);
        if ($admin) {
            Db::startTrans();
            try {


                $admin->loginfailure = 0;
                $admin->logintime = time();
                $admin->loginip = request()->ip();
                $admin->token = Random::uuid();
                $admin->save();

                $this->_user = $admin;

                $this->_token =  $admin->token;
                Token::set($this->_token, $admin->id, $this->keeptime);

                $this->_logined = true;

                //登录成功的事件
                Hook::listen("admin_login_successed", $this->_user);
                Db::commit();
            } catch (Exception $e) {
                Db::rollback();
                $this->setError($e->getMessage());
                return false;
            }
            return true;
        } else {
            return false;
        }
    }


    /**
     * 获取密码加密后的字符串
     * @param string $password 密码
     * @param string $salt     密码盐
     * @return string
     */
    public function getEncryptPassword($password, $salt = '')
    {
        return md5(md5($password) . $salt);
    }


    /**
     * 判断是否登录
     * @return boolean
     */
    public function isLogin()
    {
        if ($this->_logined) {
            return true;
        }
        return false;
    }

    /**
     * 获取当前Token
     * @return string
     */
    public function getToken()
    {
        return $this->_token;
    }

    /**
     * 获取会员基本信息
     */
    public function getUserinfo()
    {
        $data = $this->_user->toArray();
        $allowFields = $this->getAllowFields();
        $userinfo = array_intersect_key($data, array_flip($allowFields));
        $userinfo = array_merge($userinfo, Token::get($this->_token));
        return $userinfo;
    }


    /**
     * 获取会员组别规则列表
     * @return array|bool|\PDOStatement|string|\think\Collection
     */
    public function getRuleList()
    {
        if ($this->rules) {
            return $this->rules;
        }
        $groups = $this->_user->groups;
        if (!$groups) {
            return [];
        }
        $rules = [];
        foreach ($groups as $group){
            $rules = array_merge($rules, explode(',', $group->rules));
        }

        $this->rules = AuthRule::where('status', 'normal')->where('id', 'in', $rules)->field('id,pid,rule_name,name,title,ismenu')->select();
        return $this->rules;
    }


    /**
     * 检测是否是否有对应权限
     * @param string $path   控制器/方法
     * @param string $module 模块 默认为当前模块
     * @return boolean
     */
    public function check($path = null, $module = null)
    {
        if (!$this->_logined) {
            return false;
        }

        $ruleList = $this->getRuleList();
        $rules = [];
        foreach ($ruleList as $k => $v) {
            $rules[] = $v['name'];
        }
        $url = ($module ? $module : request()->module()) . '/' . (is_null($path) ? $this->getRequestUri() : $path);
        $url = strtolower(str_replace('.', '/', $url));
        return in_array($url, $rules);
    }


    /**
     * 获取当前请求的URI
     * @return string
     */
    public function getRequestUri()
    {
        return $this->requestUri;
    }

    /**
     * 设置当前请求的URI
     * @param string $uri
     */
    public function setRequestUri($uri)
    {
        $this->requestUri = $uri;
    }

    /**
     * 获取允许输出的字段
     * @return array
     */
    public function getAllowFields()
    {
        return $this->allowFields;
    }

    /**
     * 设置允许输出的字段
     * @param array $fields
     */
    public function setAllowFields($fields)
    {
        $this->allowFields = $fields;
    }


    /**
     * 检测当前控制器和方法是否匹配传递的数组
     *
     * @param array $arr 需要验证权限的数组
     * @return boolean
     */
    public function match($arr = [])
    {
        $request = Request::instance();
        $arr = is_array($arr) ? $arr : explode(',', $arr);
        if (!$arr) {
            return false;
        }
        $arr = array_map('strtolower', $arr);
        // 是否存在
        if (in_array(strtolower($request->action()), $arr) || in_array('*', $arr)) {
            return true;
        }

        // 没找到匹配
        return false;
    }


    /**
     * 设置会话有效时间
     * @param int $keeptime 默认为永久
     */
    public function keeptime($keeptime = 0)
    {
        $this->keeptime = $keeptime;
    }

    /**
     * 设置错误信息
     *
     * @param string $error 错误信息
     * @return \app\common\library\Auth
     */
    public function setError($error)
    {
        $this->_error = $error;
        return $this;
    }

    /**
     * 获取错误信息
     * @return string
     */
    public function getError()
    {
        return $this->_error ? __($this->_error) : '';
    }


    /**
     * 获得面包屑导航
     * @param string $path
     * @return array
     */
    public function getBreadCrumb($path = '')
    {
        if ($this->breadcrumb || !$path) {
            return $this->breadcrumb;
        }
        $titleArr = [];
        $menuArr = [];
        $urlArr = explode('/', $path);
        foreach ($urlArr as $index => $item) {
            $pathArr[implode('/', array_slice($urlArr, 0, $index + 1))] = $index;
        }
        if (!$this->rules && $this->id) {
            $this->getRuleList();
        }
        foreach ($this->rules as $rule) {
            if (isset($pathArr[$rule['name']])) {
                $rule['title'] = __($rule['title']);
                $rule['url'] = url($rule['name']);
                $titleArr[$pathArr[$rule['name']]] = $rule['title'];
                $menuArr[$pathArr[$rule['name']]] = $rule;
            }
        }
        ksort($menuArr);
        $this->breadcrumb = $menuArr;
        return $this->breadcrumb;
    }

}