File: buffextras.cpp

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/*
 * Copyright (C) 2004-2025 ZNC, see the NOTICE file for details.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <znc/Chan.h>
#include <znc/IRCNetwork.h>

using std::vector;

class CBuffExtras : public CModule {
  public:
    MODCONSTRUCTOR(CBuffExtras) {}

    ~CBuffExtras() override {}

    void AddBuffer(CChan& Channel, const CString& sMessage,
                   const timeval* tv = nullptr,
                   const MCString& mssTags = MCString::EmptyMap) {
        // If they have AutoClearChanBuffer enabled, only add messages if no
        // client is connected
        if (Channel.AutoClearChanBuffer() && GetNetwork()->IsUserOnline())
            return;

        Channel.AddBuffer(":" + GetModNick() + "!" + GetModName() +
                              "@znc.in PRIVMSG " +
                              _NAMEDFMT(Channel.GetName()) + " :{text}",
                          sMessage, tv, mssTags);
    }

    void OnRawMode2(const CNick* pOpNick, CChan& Channel, const CString& sModes,
                    const CString& sArgs) override {
        const CString sNickMask =
            pOpNick ? pOpNick->GetNickMask() : t_s("Server");
        AddBuffer(Channel,
                  t_f("{1} set mode: {2} {3}")(sNickMask, sModes, sArgs));
    }

    void OnKickMessage(CKickMessage& Message) override {
        const CNick& OpNick = Message.GetNick();
        const CString sKickedNick = Message.GetKickedNick();
        CChan& Channel = *Message.GetChan();
        const CString sMessage = Message.GetReason();
        AddBuffer(Channel, t_f("{1} kicked {2} with reason: {3}")(
                               OpNick.GetNickMask(), sKickedNick, sMessage),
                  &Message.GetTime(), Message.GetTags());
    }

    void OnQuitMessage(CQuitMessage& Message,
                       const vector<CChan*>& vChans) override {
        const CNick& Nick = Message.GetNick();
        const CString sMessage = Message.GetReason();
        const CString sMsg = t_f("{1} quit: {2}")(Nick.GetNickMask(), sMessage);
        for (CChan* pChan : vChans) {
            AddBuffer(*pChan, sMsg, &Message.GetTime(), Message.GetTags());
        }
    }

    void OnJoinMessage(CJoinMessage& Message) override {
        const CNick& Nick = Message.GetNick();
        CChan& Channel = *Message.GetChan();
        AddBuffer(Channel, t_f("{1} joined")(Nick.GetNickMask(), " joined"),
                  &Message.GetTime(), Message.GetTags());
    }

    void OnPartMessage(CPartMessage& Message) override {
        const CNick& Nick = Message.GetNick();
        CChan& Channel = *Message.GetChan();
        const CString sMessage = Message.GetReason();
        AddBuffer(Channel, t_f("{1} parted: {2}")(Nick.GetNickMask(), sMessage),
                  &Message.GetTime(), Message.GetTags());
    }

    void OnNickMessage(CNickMessage& Message,
                       const vector<CChan*>& vChans) override {
        const CNick& OldNick = Message.GetNick();
        const CString sNewNick = Message.GetNewNick();
        const CString sMsg =
            t_f("{1} is now known as {2}")(OldNick.GetNickMask(), sNewNick);
        for (CChan* pChan : vChans) {
            AddBuffer(*pChan, sMsg, &Message.GetTime(), Message.GetTags());
        }
    }

    EModRet OnTopicMessage(CTopicMessage& Message) override {
        const CNick& Nick = Message.GetNick();
        CChan& Channel = *Message.GetChan();
        const CString sTopic = Message.GetTopic();
        AddBuffer(Channel, t_f("{1} changed the topic to: {2}")(
                               Nick.GetNickMask(), sTopic),
                  &Message.GetTime(), Message.GetTags());

        return CONTINUE;
    }
};

template <>
void TModInfo<CBuffExtras>(CModInfo& Info) {
    Info.SetWikiPage("buffextras");
    Info.AddType(CModInfo::NetworkModule);
}

USERMODULEDEFS(CBuffExtras,
               t_s("Adds joins, parts etc. to the playback buffer"))