<?php

namespace app\common\library;

use app\common\model\inspection\InspectionApplication;
use app\common\model\User;
use fast\Random;
use think\Config;
use think\Db;
use think\Exception;
use think\Hook;
use think\Request;
use think\Validate;

class InspectionAuth
{
    protected static $instance = null;
    protected $_error = '';
    protected $_logined = false;
    protected $_application = null;
    protected $_user = null;
    protected $_token = '';
    protected $keeptime = 2592000;
    protected $requestUri = '';
    protected $rules = [];
    //默认配置
    protected $config = [];
    protected $options = [];
    protected $allowFields = ['id', 'user_id', 'name', 'phone', 'supplier_id', 'audit_status', 'status', 'region_full', 'address', 'avatar'];

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

    public static function instance($options = [])
    {
        if (is_null(self::$instance)) {
            self::$instance = new static($options);
        }
        return self::$instance;
    }

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

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

    /**
     * 根据Token初始化验货员身份
     * @param string $token
     * @return bool
     */
    public function init($token)
    {
        if ($this->_logined) {
            return true;
        }
        if ($this->_error) {
            return false;
        }
        
        if (!$token) {
            return false;
        }

        $application = InspectionApplication::where([
            'token' => $token,
            'audit_status' => 2,
            'status' => 1
        ])->where('token_expire_time', '>', time())->find();
            
        if (!$application) {
            $this->setError('验货员未登录或登录已过期');
            return false;
        }

        $user = User::get($application->user_id);
        if (!$user) {
            $this->setError('用户不存在');
            return false;
        }

        if ($user->status != 1) {
            $this->setError('用户已被禁用');
            return false;
        }

        $this->_application = $application;
        $this->_user = $user;
        $this->_logined = true;
        $this->_token = $token;

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

        return true;
    }

    /**
     * 验货员登录
     * @param string $phone 手机号
     * @param string $password 密码（实际项目中可能需要验证码等）
     * @return bool
     */
    public function login($phone, $password = '')
    {
        $application = InspectionApplication::where([
            'phone' => $phone,
            'audit_status' => 2,
            'status' => 1
        ])->find();
            
        if (!$application) {
            $this->setError('验货员不存在或未通过审核');
            return false;
        }

        $user = User::get($application->user_id);
        if (!$user) {
            $this->setError('关联用户不存在');
            return false;
        }

        if ($user->status != 1) {
            $this->setError('用户已被禁用');
            return false;
        }

        // 检查登录失败次数
        if ($application->login_failure >= 10 && time() - $application->login_failure_time < 86400) {
            $this->setError('登录失败次数过多，请24小时后重试');
            return false;
        }

        // 验证密码
        if ($password && $application->password != $this->getEncryptPassword($password, $application->salt)) {
            $application->save(['login_failure' => $application->login_failure + 1, 'login_failure_time' => time()]);
            $this->setError('密码错误');
            return false;
        }

        //直接登录验货员
        return $this->direct($application->user_id);
    }

    /**
     * 直接登录验货员
     * @param int $user_id
     * @return bool
     */
    public function direct($id)
    {
        $application = InspectionApplication::where([
            'id' => $id,
            'audit_status' => 2,
            'status' => 1
        ])->find();
            
        if (!$application) {
            $this->setError('验货员未通过审核');
            return false;
        }

        $user = User::get($application->user_id);
        if (!$user) {
            $this->setError('关联用户不存在');
            return false;
        }

        Db::startTrans();
        try {
            $ip = request()->ip();
            $time = time();
            $token = Random::uuid();
            $expire = $time + $this->keeptime;

            //判断连续登录和最大连续登录
            if ($application->login_time < \fast\Date::unixtime('day')) {
                $application->successions = $application->login_time < \fast\Date::unixtime('day', -1) ? 1 : $application->successions + 1;
                $application->max_successions = max($application->successions, $application->max_successions);
            }

            $application->prev_time = $application->login_time;
            //记录本次登录的IP和时间
            $application->login_ip = $ip;
            $application->login_time = $time;
            //重置登录失败次数
            $application->login_failure = 0;
            //设置token
            $application->token = $token;
            $application->token_expire_time = $expire;
            
            $application->save();

            $this->_application = $application;
            $this->_user = $user;
            $this->_logined = true;
            $this->_token = $token;

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

    /**
     * 退出登录
     * @return bool
     */
    public function logout()
    {
        if (!$this->_logined) {
            $this->setError('未登录');
            return false;
        }
        
        Db::startTrans();
        try {
            $this->_application->token = null;
            $this->_application->token_expire_time = null;
            $this->_application->save();
            
            $this->_logined = false;
            $this->_token = '';
            
            //退出成功的事件
            Hook::listen("inspection_logout_successed", $this->_application);
            Db::commit();
        } catch (Exception $e) {
            Db::rollback();
            $this->setError($e->getMessage());
            return false;
        }
        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) {
            $this->setError('您尚未登录');
            return false;
        }
        //判断旧密码是否正确
        if ($this->_application->password == $this->getEncryptPassword($oldpassword, $this->_application->salt) || $ignoreoldpassword) {
            Db::startTrans();
            try {
                $salt = Random::alnum();
                $newpassword = $this->getEncryptPassword($newpassword, $salt);
                
                // 更新验货员申请表的密码和salt
                $this->_application->password = $newpassword;
                $this->_application->salt = $salt;
                $this->_application->login_failure = 0;
                // 清除当前token，强制重新登录
                $this->_application->token = null;
                $this->_application->token_expire_time = null;
                $this->_application->save();
                
                //修改密码成功的事件
                Hook::listen("inspection_changepwd_successed", $this->_application);
                Db::commit();
            } catch (Exception $e) {
                Db::rollback();
                $this->setError($e->getMessage());
                return false;
            }
            return true;
        } else {
            $this->setError('旧密码错误');
            return false;
        }
    }

    /**
     * 判断是否已登录
     * @return bool
     */
    public function isLogin()
    {
        return $this->_logined;
    }

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

    /**
     * 获取验货员申请信息
     * @return InspectionApplication|null
     */
    public function getApplication()
    {
        return $this->_application;
    }

    /**
     * 获取验货员用户信息
     * @return User|null
     */
    public function getUser()
    {
        return $this->_user;
    }

    /**
     * 获取验货员基本信息
     */
    public function getInspectorInfo()
    {
        if (!$this->_application) {
            return null;
        }
        
        $data = $this->_application->toArray();    
        $allowFields = $this->getAllowFields();
        $inspectorInfo = array_intersect_key($data, array_flip($allowFields));
        
        // 添加token信息
        $inspectorInfo['token'] = $this->_token;
        $inspectorInfo['token_expire_time'] = $this->_application->token_expire_time;
        
        return $inspectorInfo;
    }

    /**
     * 获取供应商ID
     * @return int
     */
    public function getSupplierId()
    {
        return $this->_application ? $this->_application->supplier_id : 0;
    }

    /**
     * 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;
    }

    /**
     * 设置初始密码
     * @param string $password 密码
     * @return boolean
     */
    public function setPassword($password)
    {
        if (!$this->_application) {
            $this->setError('验货员信息不存在');
            return false;
        }
        
        try {
            $salt = Random::alnum();
            $encryptPassword = $this->getEncryptPassword($password, $salt);
            
            $this->_application->password = $encryptPassword;
            $this->_application->salt = $salt;
            $this->_application->save();
            
            return true;
        } catch (Exception $e) {
            $this->setError($e->getMessage());
            return false;
        }
    }

    /**
     * 更新头像
     * @param string $avatar 头像路径
     * @return boolean
     */
    public function updateAvatar($avatar)
    {
        if (!$this->_logined) {
            $this->setError('您尚未登录');
            return false;
        }
        
        try {
            $this->_application->avatar = $avatar;
            $this->_application->save();
            
            //更新头像成功的事件
            Hook::listen("inspection_update_avatar_successed", $this->_application);
            return true;
        } catch (Exception $e) {
            $this->setError($e->getMessage());
            return false;
        }
    }

    /**
     * 获取头像完整URL
     * @return string
     */
    public function getAvatar()
    {
        if (!$this->_application || !$this->_application->avatar) {
            return '';
        }
        return cdnurl($this->_application->avatar, true);
    }

    /**
     * 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);
    }

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

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