<?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 $allowFields = ['id', 'user_id', 'name', 'phone', 'supplier_id', 'audit_status', 'status'];

    public function __construct($options = [])
    {
        // 可扩展配置
    }

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

    /**
     * 初始化验货员身份（通过token）
     * @param string $token
     * @return bool
     */
    public function init($token)
    {
        if ($this->_logined) {
            return true;
        }
        if ($this->_error) {
            return false;
        }
        $application = InspectionApplication::where('token', $token)
            ->where('audit_status', 2)
            ->where('status', 1)
            ->find();
        if (!$application) {
            $this->setError('验货员未登录或未通过审核');
            return false;
        }
        $this->_application = $application;
        $this->_user = User::get($application->user_id);
        $this->_logined = true;
        $this->_token = $token;
        return true;
    }

    /**
     * 直接登录验货员
     * @param int $user_id
     * @return bool
     */
    public function direct($user_id)
    {
        $application = InspectionApplication::where('user_id', $user_id)
            ->where('audit_status', 2)
            ->where('status', 1)
            ->find();
        if (!$application) {
            $this->setError('验货员未通过审核');
            return false;
        }
        $token = Random::uuid();
        $expire = time() + $this->keeptime;
        $application->token = $token;
        $application->token_expiretime = $expire;
        $application->save();
        $this->_application = $application;
        $this->_user = User::get($application->user_id);
        $this->_logined = true;
        $this->_token = $token;
        return true;
    }

    /**
     * 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;
    }

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

    /**
     * 退出登录
     * @return bool
     */
    public function logout()
    {
        if (!$this->_logined) {
            $this->setError('未登录');
            return false;
        }
        $this->_application->token = null;
        $this->_application->token_expiretime = null;
        $this->_application->save();
        $this->_logined = false;
        $this->_token = '';
        return true;
    }

    /**
     * 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;
    }

    /**
     * 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;
    }
}