<?php
// +----------------------------------------------------------------------
// | YwxApp [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2026-2036 http://ywxapp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Author: ywxapp<admin@ywxapp.cn>
// +----------------------------------------------------------------------

declare (strict_types = 1);

namespace addon\wxchat\wprker\handle;

use GatewayWorker\Lib\Gateway;

/**
 * MessageHandle 类
 *
 * @author ywxapp <admin@ywxapp.cn>
 */
class MessageHandle
{

    protected static $sensitiveWords = ['fuck', 'shit', '赌博', '色情'];
    /**
     * 敏感词过滤
     */
    protected static function filterSensitiveWords($text)
    {
        foreach (self::$sensitiveWords as $word) {
            $text = str_replace($word, '**', $text);
        }
        return $text;
    }

    /**
     * 处理普通消息（文本/图片/文件）
     */
    protected static function handle($client_id, $message)
    {
        $header  = $message->header;
        $payload = $message->payload;

        $fromUid = $header->from ?? '';
        $uid     = Gateway::getUidByClientId($client_id);
        echo "Received message from UID: $fromUid, ClientID: $client_id  , $uid\n";
        if (! $uid || $uid != $fromUid) {
            self::sendError($client_id, '未认证用户，无法发送消息');
            return;
        }
        if ($header->type == 'text' && ! empty($payload->content)) {
            $filteredContent = self::filterSensitiveWords($payload->content);
            if ($filteredContent !== $payload->content) {
                // file_put_contents('/tmp/sensitive_log.log', date('Y-m-d H:i:s') . " {$fromUid} 发送敏感词: {$data['payload']['content']}\n", FILE_APPEND);
                $message->payload->content = $filteredContent;
            }
        }
        // 消息持久化（重要！写入数据库）
        // self::saveMessageToDB($data);
        // 转发消息
        if ($header->subtype === 'single') {
            // 单聊：发送给目标用户
            if (Gateway::isUidOnline($header->to)) {

                Gateway::sendToUid($header->to, json_encode($message));
                // 发送ACK给发送方（表示已送达）
                $ackMsg                   = new Message();
                $ackMsg->header->type     = MessageType::System;
                $ackMsg->header->subtype  = MessageType::Delivered;
                $ackMsg->payload->content = '不支持的消息类型!  ';
                Gateway::sendToUid($header->from, json_encode($message));
            } else {
                // 对方不在线，存离线消息（写入Redis/DB）
                // self::saveOfflineMessage($toId, $data);

                $newMessage                   = new Message();
                $newMessage->header->type     = MessageType::Error;
                $newMessage->payload->content = "用户 {$toId} 不在线，消息已存为离线";
                Gateway::sendToClient($client_id, json_encode($message));
            }
        } elseif ($header->subtype === 'group') {
            // 群聊：发送给群内所有成员（排除自己）
            // TODO: 从数据库获取群成员列表
            // $members = self::getGroupMembers($toId);
            // foreach ($members as $memberUid) {
            //     if ($memberUid != $fromUid && Gateway::hasUid($memberUid)) {
            //         Gateway::sendToUid($memberUid, json_encode($data));
            //     }
            // }
            Gateway::sendToGroup($header->to, json_encode($message));

            $ackMsg                   = new Message();
            $ackMsg->header->type     = MessageType::System;
            $ackMsg->header->subtype  = MessageType::Delivered;
            $ackMsg->payload->content = '不支持的消息类型!  ';
            Gateway::sendToUid($header->from, json_encode($message));
        } else {
            $errorMsg                   = new Message();
            $errorMsg->header->type     = MessageType::Error;
            $errorMsg->payload->content = "未知会话类型";
            Gateway::sendToClient($client_id, json_encode($errorMsg));
            return;
        }
        // 回复发送方：消息已接收（前端更新状态用）
        $receivedMsg               = new Message();
        $receivedMsg->header->type = MessageType::Error;
        Gateway::sendToClient($client_id, json_encode($receivedMsg)); 
    }
}