<?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\worker\handle;

use addon\wxchat\model\WxchatMessage;
use addon\wxchat\model\WxchatUnreadCount;
use addon\wxchat\worker\enum\MsgFrame;
use addon\wxchat\worker\enum\MsgType;
use addon\wxchat\worker\MsgReply;
use GatewayWorker\Lib\Gateway;

/**
 * 状态消息处理：正在输入 / 送达 / 已读 / 撤回
 * typing 仅实时转发不落库；read 清零未读；revoked 标记撤回
 */
class StatusHandle
{
    
    public static function handle($client_id, $header, $payload)
    {
        $uid = Gateway::getUidByClientId($client_id);
        if (empty($uid)) {
            MsgReply::sendError($client_id, '未认证，请先登录');
            return;
        }

        switch ($header->type) {
            case MsgType::TYPING->value:
                // 实时转发给对方，不落库
                $to = (int)($payload->receiver ?? 0);
                if ($to && Gateway::isUidOnline($to)) {
                    MsgReply::sendToUid($to, MsgFrame::STATUS->value, MsgType::TYPING->value, 'typing', [
                        'from' => $uid,
                    ]);
                }
                break;

            case MsgType::READ->value:
                // 标记某会话已读：清零自己对该会话的未读
                $peer = (int)($payload->receiver ?? 0);
                if ($peer) {
                    WxchatUnreadCount::reset($uid, 0, $peer);
                }
                break;

            case MsgType::REVOKED->value:
                // 撤回消息
                $msgId = (int)($payload->msg_id ?? 0);
                $msg   = WxchatMessage::find($msgId);
                if ($msg && $msg->sender_id == $uid) {
                    $msg->is_recalled = 1;
                    $msg->recalled_at = date('Y-m-d H:i:s');
                    $msg->save();
                    // 通知对方撤回
                    $to = (int)($payload->receiver ?? 0);
                    if ($to && Gateway::isUidOnline($to)) {
                        MsgReply::sendToUid($to, MsgFrame::STATUS->value, MsgType::REVOKED->value, 'revoked', [
                            'msg_id' => $msgId,
                            'from'   => $uid,
                        ]);
                    }
                }
                break;

            case MsgType::DELIVERED->value:
                // 送达回执，无需处理
                break;

            default:
                MsgReply::sendError($client_id, '不支持的状态消息类型');
        }
    }
}