<?php

namespace app\common\controller;

use app\common\library\Auth;
use think\Config;
use think\exception\HttpResponseException;
use think\exception\ValidateException;
use think\Hook;
use think\Lang;
use think\Loader;
use think\Request;
use think\Response;
use think\Route;
use think\Validate;
use Redis;
use app\utils\LogUtil;

/**
 * API控制器基类
 */
class Api
{

    /**
     * @var Request Request 实例
     */
    protected $request;

    /**
     * @var bool 验证失败是否抛出异常
     */
    protected $failException = false;

    /**
     * @var bool 是否批量验证
     */
    protected $batchValidate = false;

    /**
     * @var array 前置操作方法列表
     */
    protected $beforeActionList = [];

    /**
     * 无需登录的方法,同时也就不需要鉴权了
     * @var array
     */
    protected $noNeedLogin = [];

    /**
     * 无需鉴权的方法,但需要登录
     * @var array
     */
    protected $noNeedRight = [];

    /**
     * 权限Auth
     * @var Auth
     */
    protected $auth = null;

    /**
     * 默认响应输出类型,支持json/xml
     * @var string
     */
    protected $responseType = 'json';

    /**
     * @var int 日志类型 1 文件；2sql
     */
    public $logType = 2;

    /**
     * 构造方法
     * @access public
     * @param Request $request Request 对象
     */
    public function __construct(Request $request = null)
    {
        $this->request = is_null($request) ? Request::instance() : $request;

        if(config('site.apisite_switch') == 0){
            $controllername = $this->request->controller();
            $controllername = strtolower($controllername);

            if(!in_array($controllername,['notify','easemob','payios'])){
                $notice = config('site.apisite_notice') ?: '全站维护中';
                $this->error($notice);
            }
        }

        // 控制器初始化
        $this->_initialize();
        //日志
        $this->request_log();
        //用户活跃
        //$this->user_active();

        // 前置操作方法
        if ($this->beforeActionList) {
            foreach ($this->beforeActionList as $method => $options) {
                is_numeric($method) ?
                    $this->beforeAction($options) :
                    $this->beforeAction($method, $options);
            }
        }
    }

    /**
     * 初始化操作
     * @access protected
     */
    protected function _initialize()
    {
        //跨域请求检测
        check_cors_request();

        // 检测IP是否允许
        check_ip_allowed();

        //移除HTML标签
        $this->request->filter('trim,strip_tags,htmlspecialchars');

        $this->auth = Auth::instance();

        $modulename = $this->request->module();
        $controllername = Loader::parseName($this->request->controller());
        $actionname = strtolower($this->request->action());

        // token
        $token = $this->request->server('HTTP_TOKEN', $this->request->request('token', \think\Cookie::get('token')));

        $path = str_replace('.', '/', $controllername) . '/' . $actionname;
        // 设置当前请求的URI
        $this->auth->setRequestUri($path);
        // 检测是否需要验证登录
        if (!$this->auth->match($this->noNeedLogin)) {
            //初始化
            $this->auth->init($token);
            //检测是否登录
            if (!$this->auth->isLogin()) {
                $this->error(__('Please login first'), null, 401);
            }
            // 判断是否需要验证权限
            /*if (!$this->auth->match($this->noNeedRight)) {
                // 判断控制器和方法判断是否有对应权限
                if (!$this->auth->check($path)) {
                    $this->error(__('You have no permission'), null, 403);
                }
            }*/
        } else {
            // 如果有传递token才验证是否登录状态
            if ($token) {
                $this->auth->init($token);
                //传就必须传对
                /*if (!$this->auth->isLogin()) {
                    $this->error(__('Please login first'), null, 401);
                }*/
            }
        }

        $upload = \app\common\model\Config::upload();

        // 上传信息配置后
        Hook::listen("upload_config_init", $upload);

        Config::set('upload', array_merge(Config::get('upload'), $upload));

        // 加载当前控制器语言包
        $this->loadlang($controllername);
    }

    /**
     * 加载语言文件
     * @param string $name
     */
    protected function loadlang($name)
    {
        $name = Loader::parseName($name);
        $name = preg_match("/^([a-zA-Z0-9_\.\/]+)\$/i", $name) ? $name : 'index';
        $lang = $this->request->langset();
        $lang = preg_match("/^([a-zA-Z\-_]{2,10})\$/i", $lang) ? $lang : 'zh-cn';
        Lang::load(APP_PATH . $this->request->module() . '/lang/' . $lang . '/' . str_replace('.', '/', $name) . '.php');
    }

    /**
     * 操作成功返回的数据
     * @param string $msg    提示信息
     * @param mixed  $data   要返回的数据
     * @param int    $code   错误码，默认为1
     * @param string $type   输出类型
     * @param array  $header 发送的 Header 信息
     */
    protected function success($msg = '', $data = null, $code = 1, $type = null, array $header = [])
    {
        if($msg == 1){
            $msg = 'success';
        }
        if(empty($msg)){
            $msg = '操作成功';
        }
        $this->result($msg, $data, $code, $type, $header);
    }

    /**
     * 操作失败返回的数据
     * @param string $msg    提示信息
     * @param mixed  $data   要返回的数据
     * @param int    $code   错误码，默认为0
     * @param string $type   输出类型
     * @param array  $header 发送的 Header 信息
     */
    protected function error($msg = '', $data = null, $code = 0, $type = null, array $header = [])
    {
        if(empty($msg)){
            $msg = __('Invalid parameters');
        }
        $this->result($msg, $data, $code, $type, $header);
    }

    /**
     * 返回封装后的 API 数据到客户端
     * @access protected
     * @param mixed  $msg    提示信息
     * @param mixed  $data   要返回的数据
     * @param int    $code   错误码，默认为0
     * @param string $type   输出类型，支持json/xml/jsonp
     * @param array  $header 发送的 Header 信息
     * @return void
     * @throws HttpResponseException
     */
    protected function result($msg, $data = null, $code = 0, $type = null, array $header = [])
    {
        $result = [
            'code' => $code,
            'msg'  => $msg,
            'time' => Request::instance()->server('REQUEST_TIME'),
            'data' => $data,
        ];

        //日志
        $this->request_log_update($result);

        // 如果未设置类型则使用默认类型判断
        $type = $type ? : $this->responseType;

        if (isset($header['statuscode'])) {
            $code = $header['statuscode'];
            unset($header['statuscode']);
        } else {
            //未设置状态码,根据code值判断
            $code = $code >= 1000 || $code < 200 ? 200 : $code;
        }
        $response = Response::create($result, $type, $code)->header($header);
        throw new HttpResponseException($response);
    }

    /**
     * 前置操作
     * @access protected
     * @param string $method  前置操作方法名
     * @param array  $options 调用参数 ['only'=>[...]] 或者 ['except'=>[...]]
     * @return void
     */
    protected function beforeAction($method, $options = [])
    {
        if (isset($options['only'])) {
            if (is_string($options['only'])) {
                $options['only'] = explode(',', $options['only']);
            }

            if (!in_array($this->request->action(), $options['only'])) {
                return;
            }
        } elseif (isset($options['except'])) {
            if (is_string($options['except'])) {
                $options['except'] = explode(',', $options['except']);
            }

            if (in_array($this->request->action(), $options['except'])) {
                return;
            }
        }

        call_user_func([$this, $method]);
    }

    /**
     * 设置验证失败后是否抛出异常
     * @access protected
     * @param bool $fail 是否抛出异常
     * @return $this
     */
    protected function validateFailException($fail = true)
    {
        $this->failException = $fail;

        return $this;
    }

    /**
     * 验证数据
     * @access protected
     * @param array        $data     数据
     * @param string|array $validate 验证器名或者验证规则数组
     * @param array        $message  提示信息
     * @param bool         $batch    是否批量验证
     * @param mixed        $callback 回调方法（闭包）
     * @return array|string|true
     * @throws ValidateException
     */
    protected function validate($data, $validate, $message = [], $batch = false, $callback = null)
    {
        if (is_array($validate)) {
            $v = Loader::validate();
            $v->rule($validate);
        } else {
            // 支持场景
            if (strpos($validate, '.')) {
                list($validate, $scene) = explode('.', $validate);
            }

            $v = Loader::validate($validate);

            !empty($scene) && $v->scene($scene);
        }

        // 批量验证
        if ($batch || $this->batchValidate) {
            $v->batch(true);
        }
        // 设置错误信息
        if (is_array($message)) {
            $v->message($message);
        }
        // 使用回调验证
        if ($callback && is_callable($callback)) {
            call_user_func_array($callback, [$v, &$data]);
        }

        if (!$v->check($data)) {
            if ($this->failException) {
                throw new ValidateException($v->getError());
            }

            return $v->getError();
        }

        return true;
    }

    /**
     * 刷新Token
     */
    protected function token()
    {
        $token = $this->request->param('__token__');

        //验证Token
        if (!Validate::make()->check(['__token__' => $token], ['__token__' => 'require|token'])) {
            $this->error(__('Token verification error'), ['__token__' => $this->request->token()]);
        }

        //刷新Token
        $this->request->token();
    }

    /**
     * 接口请求限制
     * @param int $apiLimit
     * @param int $apiLimitTime
     * @param string $key
     * @return bool | true:通过 false:拒绝
     */
    public function apiLimit($apiLimit = 1, $apiLimitTime = 1000, $key = '')
    {
        $userId = $this->auth->id;
        $controller = request()->controller();
        $action = request()->action();

        if (!$key) {
            $key = strtolower($controller) . '_' . strtolower($action) . '_' . $userId;
        }

        $redis = new Redis();
        $redisconfig = config("redis");
        $redis->connect($redisconfig["host"], $redisconfig["port"]);
        if ($redisconfig['redis_pwd']) {
            $redis->auth($redisconfig['redis_pwd']);
        }
        if($redisconfig['redis_selectdb'] > 0){
            $redis->select($redisconfig['redis_selectdb']);
        }

        //
        //指定键值新增+1 并获取
        $count = $redis->incr($key);
        if ($count > $apiLimit) {
            return false;
        }

        //设置过期时间
        if ($count == 1) {
            $redis->pExpire($key, $apiLimitTime);
        }

        return true;
    }

    /*
     * api 请求日志
     * */
    protected function request_log(){

        //api_request_log
        $modulename     = $this->request->module();
        $controllername = $this->request->controller();
        $actionname     = $this->request->action();

        if(strtolower($actionname) == 'callback'){
            return true;
        }

        defined('API_REQUEST_LOG_TYPE') or define('API_REQUEST_LOG_TYPE', $this->logType);
        $params = input();
        if ($this->logType === 1){
            //日志统一写入
            register_shutdown_function([new LogUtil, 'close']);
            LogUtil::getInstance('Api/'); //设置日志存入通道

            LogUtil::info('uid', 'Api-Middleware-Log', 'request_log', $this->auth->id);
            LogUtil::info('url', 'Api-Middleware-Log', 'request_log', $modulename . '/' . $controllername . '/' . $actionname);
            LogUtil::info('params', 'Api-Middleware-Log', 'request_log', $params);
            LogUtil::info('ip', 'Api-Middleware-Log', 'request_log', request()->ip());

        }else{
            $data = [
                'uid'   => $this->auth->id,
                'api'   => $modulename.'/'.$controllername.'/'.$actionname,
                'params' => json_encode($params),
                'addtime'  => time(),
                'adddatetime'  => date('Y-m-d H:i:s'),
                'ip'   => request()->ip(),
            ];
            $request_id = db('api_request_log')->insertGetId($data);
            defined('API_REQUEST_ID') or define('API_REQUEST_ID', $request_id);
        }
    }

    protected function request_log_update($log_result){

        if ($this->logType === 1){
            if (strlen(json_encode($log_result['data'])) > 1000) {
                $log_result['data'] = '数据太多，不记录';
            }
            LogUtil::info('result', 'Api-Middleware-Log', 'request_log', $log_result);
        }else{
            if(defined('API_REQUEST_ID')) { //记录app正常返回结果
                if(strlen(json_encode($log_result['data'])) > 1000) {
                    $log_result['data'] = '数据太多，不记录';
                }
                db('api_request_log')->where('id',API_REQUEST_ID)->update(['result'=>json_encode($log_result)]);
            }
        }
    }

    //更新用户活跃
    protected function user_active(){
        if($this->auth->isLogin()){
            db('user_active')->where('user_id',$this->auth->id)->update(['requesttime'=>time()]);
        }
    }

    //获取用户是否活跃，7200秒，2小时
    //1活跃，0不活跃
    protected function user_activeinfo($user_id,$requesttime = 0){

        if(empty($requesttime)){
            $requesttime = db('user_active')->where('user_id',$user_id)->value('requesttime');
        }

        $result = [
            'is_active' => 1,
            'active_text' => get_last_time($requesttime).'在线',
        ];

        if(time() - $requesttime > 7200){
            $result = [
                'is_active' => 0,
                'active_text' => '离线',
            ];
        }

        return $result;
    }

    //获取用户是否vip，1是，0否
    protected function is_vip($user_id){
        $result = 0;

        $vip_endtime = db('user_wallet')->where('user_id',$user_id)->value('vip_endtime');
        $result = $vip_endtime > time() ? 1 : 0;

        return $result;
    }

    //用户是否有某项权限
    //1有，0没有
    protected function user_power($user_id,$power = ''){
        $is_vip = $this->is_vip($user_id);
        if($is_vip != 1){
            return 0;
        }
        $power = db('user_power')->where('user_id',$user_id)->value($power);
        return $power;

    }

    //是否关注
    protected function is_follow($uid,$follow_uid){
        $where = [
            'uid' => $uid,
            'follow_uid' => $follow_uid,
        ];
        $check = db('user_follow')->where($where)->find();
        if($check){
            return 1;
        }else{
            return 0;
        }
    }

    //是否拉黑
    protected function is_black($uid,$black_user_id){
        $where = [
            'user_id' => $uid,
            'black_user_id' => $black_user_id,
        ];
        $check = db('user_blacklist')->where($where)->find();
        if($check){
            return 1;
        }else{
            return 0;
        }
    }

    //是否好友
    protected function is_friend($uid,$follow_uid){
        $is_follow = $this->is_follow($uid,$follow_uid);
        $be_follow = $this->is_follow($follow_uid,$uid);
        if($is_follow && $be_follow){
            return 1;
        }
        return 0;
    }
}