/**
 * @file fslslbridge.cpp
 * @brief FSLSLBridge implementation
 *
 * $LicenseInfo:firstyear=2011&license=fsviewerlgpl$
 * Phoenix Firestorm Viewer Source Code
 * Copyright (C) 2011-2017, The Phoenix Firestorm Project, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * The Phoenix Firestorm Project, Inc., 1831 Oakwood Drive, Fairmont, Minnesota 56031-3225 USA
 * http://www.firestormviewer.org
 * $/LicenseInfo$
 */

#include "llviewerprecompiledheaders.h"

#include "fscommon.h"
#include "fslslbridge.h"
#include "fslslbridgerequest.h"

#include "apr_base64.h" // For getScriptInfo()
#include "llagent.h"
#include "llappearancemgr.h"
#include "llattachmentsmgr.h"
#include "llavatarappearance.h"
#include "llinventoryfunctions.h"
#include "llmaniptranslate.h"
#include "llnotificationsutil.h"
#include "llpreviewscript.h"
#include "llselectmgr.h"
#include "llsdutil.h"
#include "llslurl.h"
#include "lltrans.h"
#include "llviewerassetupload.h"
#include "llviewercontrol.h"
#include "llviewerregion.h"

#if OPENSIM
#include "llviewernetwork.h"
#endif

static const std::string FS_BRIDGE_FOLDER = "#LSL Bridge";
static const std::string FS_BRIDGE_CONTAINER_FOLDER = "Landscaping";
static const U32 FS_BRIDGE_MAJOR_VERSION = 2;
static const U32 FS_BRIDGE_MINOR_VERSION = 29;
static const U32 FS_MAX_MINOR_VERSION = 99;
static const std::string UPLOAD_SCRIPT_CURRENT = "EBEDD1D2-A320-43f5-88CF-DD47BBCA5DFB.lsltxt";
static const std::string FS_STATE_ATTRIBUTE = "state=";
static const std::string FS_ERROR_ATTRIBUTE = "error=";

class NameCollectFunctor : public LLInventoryCollectFunctor
{
public:
    NameCollectFunctor(std::string_view name)
    {
        sName = static_cast<std::string>(name);
    }
    virtual ~NameCollectFunctor() {}
    virtual bool operator()(LLInventoryCategory* cat,
                            LLInventoryItem* item)
    {
        if (item)
        {
            return (item->getName() == sName);
        }
        return false;
    }
private:
    std::string sName;
};

//
//
// Bridge functionality
//
FSLSLBridge::FSLSLBridge():
                    mBridgeCreating(false),
                    mpBridge(nullptr),
                    mBridgeFolderID(LLUUID::null),
                    mIsFirstCallDone(false),
                    mAllowDetach(false),
                    mFinishCreation(false),
                    mTimerResult(FSLSLBridge::NO_TIMER)
{
    LL_INFOS("FSLSLBridge") << "Constructing FSLSLBridge" << LL_ENDL;
    mCurrentFullName = llformat("%s%d.%d", FS_BRIDGE_NAME.c_str(), FS_BRIDGE_MAJOR_VERSION, FS_BRIDGE_MINOR_VERSION);

    gIdleCallbacks.addFunction(onIdle, this);
}

FSLSLBridge::~FSLSLBridge()
{
    gIdleCallbacks.deleteFunction(onIdle, this);
}

void FSLSLBridge::onIdle(void* userdata)
{
    FSLSLBridge* instance = static_cast<FSLSLBridge*>(userdata);
    if (instance)
    {
        switch (instance->mTimerResult)
        {
            case START_CREATION_FINISHED:
                instance->finishCleanUpPreCreation();
                instance->setTimerResult(NO_TIMER);
                break;
            case CLEANUP_FINISHED:
                instance->finishBridge();
                instance->setTimerResult(NO_TIMER);
                break;
            case REATTACH_FINISHED:
                {
                    LLViewerInventoryItem* inv_object = gInventory.getItem(instance->mReattachBridgeUUID);
                    if (inv_object && instance->getBridge() && instance->getBridge()->getUUID() == inv_object->getUUID())
                    {
                        LLAttachmentsMgr::instance().addAttachmentRequest(inv_object->getUUID(), FS_BRIDGE_POINT, true, true);
                    }
                    instance->mReattachBridgeUUID.setNull();
                    instance->setTimerResult(NO_TIMER);
                }
                break;
            case SCRIPT_UPLOAD_FINISHED:
                instance->checkBridgeScriptName();
                instance->setTimerResult(NO_TIMER);
                break;
            case NO_TIMER:
            default:
                break;
        }
    }
}

void FSLSLBridge::setTimerResult(TimerResult result)
{
    mTimerResult = result;
}

bool FSLSLBridge::lslToViewer(std::string_view message, const LLUUID& fromID, const LLUUID& ownerID)
{
    LL_DEBUGS("FSLSLBridge") << message << LL_ENDL;

    //<FS:TS> FIRE-962: Script controls for built-in AO
    if (message.empty() || (message[0]) != '<')
    {
        return false;       // quick exit if empty or no leading <
    }
    size_t closebracket = message.find('>');
    size_t firstblank = message.find(' ');
    size_t tagend;
    if (closebracket == std::string::npos)
    {
        tagend = firstblank;
    }
    else if (firstblank == std::string::npos)
    {
        tagend = closebracket;
    }
    else
    {
        tagend = (closebracket < firstblank) ? closebracket : firstblank;
    }
    if (tagend == std::string::npos)
    {
        return false;
    }
    std::string_view tag = message.substr(0, tagend + 1);
    std::string ourBridge = findFSCategory().asString();
    //</FS:TS> FIRE-962

    bool bridgeIsEnabled = gSavedSettings.getBOOL("UseLSLBridge");
    bool status = false;
    if (tag == "<bridgeURL>")
    {
        if (!bridgeIsEnabled)
        {
            // Hide handshake message if bridge is disabled in viewer settings but the bridge itself sent it, then quit - don't reply to the handshake
            return true;
        }

        // brutish parsing
        static const std::string bridge_url_tag = "<bridgeURL>";
        static const std::string bridge_auth_tag = "<bridgeAuth>";
        static const std::string bridge_ver_tag = "<bridgeVer>";
        size_t urlStart  = message.find(bridge_url_tag) + bridge_url_tag.size();
        size_t urlEnd    = message.find("</bridgeURL>");
        size_t authStart = message.find(bridge_auth_tag) + bridge_auth_tag.size();
        size_t authEnd   = message.find("</bridgeAuth>");
        size_t verStart  = message.find(bridge_ver_tag) + bridge_ver_tag.size();
        size_t verEnd    = message.find("</bridgeVer>");
        std::string bURL = static_cast<std::string>(message.substr(urlStart,urlEnd - urlStart));
        std::string bAuth = static_cast<std::string>(message.substr(authStart,authEnd - authStart));
        std::string bVer = static_cast<std::string>(message.substr(verStart,verEnd - verStart));

        // Verify Authorization
        if (ourBridge != bAuth)
        {
            LL_WARNS("FSLSLBridge") << "BridgeURL message received from ("<< bAuth <<") , but not from our registered bridge ("<< ourBridge <<"). Ignoring." << LL_ENDL;
            // Failing bridge authorization automatically kicks off a bridge rebuild. This correctly handles the
            // case where a user logs in from multiple computers which cannot have the bridgeAuth ID locally
            // synchronized.


            // If something that looks like our current bridge is attached but failed auth, detach and recreate.
            const LLUUID catID = findFSCategory();
            LLViewerInventoryItem* fsBridge = findInvObject(mCurrentFullName, catID);
            if (fsBridge && get_is_item_worn(fsBridge->getUUID()))
            {
                mAllowDetach = true;
                LLVOAvatarSelf::detachAttachmentIntoInventory(fsBridge->getUUID());
                //This may have been an unfinished bridge. If so - stop the process before recreating.
                if (getBridgeCreating())
                {
                    setBridgeCreating(false);
                }
                recreateBridge();
                return true;
            }

            // If something that didn't look like our current bridge failed auth, don't recreate, it might interfere with a bridge creation in progress
            // or normal bridge startup.  Bridge creation isn't threadsafe yet.
            return true;
        }

        // Verify Version
        std::string receivedBridgeVersion = llformat("%s%s", FS_BRIDGE_NAME.c_str(), bVer.c_str());
        if (receivedBridgeVersion != mCurrentFullName)
        {
            LL_WARNS("FSLSLBridge") << "BridgeVer message received from ("<< bAuth <<") was ("<< receivedBridgeVersion <<"), but it should be different ("<< mCurrentFullName <<"). Recreating." << LL_ENDL;
            recreateBridge();
            return true;
        }

        // Save the inworld UUID of this attached bridge for later checking
        mBridgeUUID = fromID;

        // Get URL
        mCurrentURL = bURL;
        LL_INFOS("FSLSLBridge") << "New Bridge URL is: " << mCurrentURL << LL_ENDL;

        if (!mpBridge)
        {
            LLUUID catID = findFSCategory();
            LLViewerInventoryItem* fsBridge = findInvObject(mCurrentFullName, catID);
            mpBridge = fsBridge;
        }

        status = viewerToLSL("URL Confirmed");
        if (!mIsFirstCallDone)
        {
            //on first call from bridge, confirm that we are here
            //then check options use

            if (gSavedPerAccountSettings.getF32("UseLSLFlightAssist") > 0.f)
            {
                viewerToLSL(llformat("UseLSLFlightAssist|%.1f", gSavedPerAccountSettings.getF32("UseLSLFlightAssist")) );
                LLNotificationsUtil::add("FlightAssistEnabled", LLSD());
            }

            // <FS:PP> Inform user, if movelock was enabled at login
            if (gSavedPerAccountSettings.getBOOL("UseMoveLock"))
            {
                updateBoolSettingValue("UseMoveLock");
                LLNotificationsUtil::add("MovelockEnabling", LLSD());
                make_ui_sound("UISndMovelockToggle");
            }
            // </FS:PP>

            updateBoolSettingValue("RelockMoveLockAfterMovement");
            updateIntegrations();
            mIsFirstCallDone = true;

        }
        // <FS:PP> FIRE-11924: Refresh movelock position after region change (crossing/teleporting), if lock was enabled
        // Not called right after logging in, and only if movelock was enabled during transition
        else if (gSavedPerAccountSettings.getBOOL("UseMoveLock"))
        {
            make_ui_sound("UISndMovelockToggle");
            if (!gSavedSettings.getBOOL("RelockMoveLockAfterRegionChange"))
            {
                // Don't call for update here and only change setting to 'false', getCommitSignal()->connect->boost in llviewercontrol.cpp will send a message to Bridge anyway
                gSavedPerAccountSettings.setBOOL("UseMoveLock", false);
                LLNotificationsUtil::add("MovelockDisabling", LLSD());
            }
            else
            {
                // RelockMoveLockAfterRegionChange is 'true'? Then re-lock the movelock by sending a request to Bridge for coordinates update with current 'true' from UseMoveLock
                updateBoolSettingValue("UseMoveLock");
            }
        }
        // </FS:PP>

        return true;
    }
    else if (tag == "<bridgeRequestError/>")
    {
        LL_WARNS("FSLSLBridge") << "Could not obtain URL for LSL bridge." << LL_ENDL;
        return true;
    }

    //<FS:TS> FIRE-962: Script controls for built-in AO
    if (fromID != mBridgeUUID || !bridgeIsEnabled)
    {
        return false;       // ignore if not from the bridge, or bridge is disabled
    }
    if (tag == "<clientAO ")
    {
        // <FS:Zi> do nothing when the FS AO is disabled
        if (!gSavedPerAccountSettings.getBOOL("UseAO"))
        {
            return true;
        }

        status = true;
        size_t valuepos = message.find(FS_STATE_ATTRIBUTE);
        if (valuepos != std::string::npos)
        {
            // <FS:Zi> send appropriate enable/disable messages to nearby chat - FIRE-24160
            bool aoWasPaused = gSavedPerAccountSettings.getBOOL("PauseAO");
            bool aoStandsWasEnabled = gSavedPerAccountSettings.getBOOL("UseAOStands");
            // </FS:Zi>

            if (message.substr(valuepos + FS_STATE_ATTRIBUTE.size(), 2) == "on")
            {
                // <FS:Zi> Pause AO via bridge instead of switch AO on or off - FIRE-9305
                gSavedPerAccountSettings.setBOOL("PauseAO", false);
                gSavedPerAccountSettings.setBOOL("UseAOStands", true);
            }
            else if (message.substr(valuepos + FS_STATE_ATTRIBUTE.size(), 3) == "off")
            {
                // <FS:Zi> Pause AO via bridge instead of switch AO on or off - FIRE-9305
                gSavedPerAccountSettings.setBOOL("PauseAO", true);
            }
            else if (message.substr(valuepos + FS_STATE_ATTRIBUTE.size(), 7) == "standon")
            {
                gSavedPerAccountSettings.setBOOL("UseAOStands", true);
            }
            else if (message.substr(valuepos + FS_STATE_ATTRIBUTE.size(), 8) == "standoff")
            {
                gSavedPerAccountSettings.setBOOL("UseAOStands", false);
            }
            else
            {
                LL_WARNS("FSLSLBridge") << "AO control - Received unknown state" << LL_ENDL;
            }

            // <FS:Zi> send appropriate enable/disable messages to nearby chat - FIRE-24160
            std::string aoMessage;

            if (aoWasPaused != gSavedPerAccountSettings.getBOOL("PauseAO"))
            {
                if (aoWasPaused)
                {
                    aoMessage = LLTrans::getString("FSAOResumedScript");
                }
                else
                {
                    aoMessage = LLTrans::getString("FSAOPausedScript");
                }
            }

            if (aoStandsWasEnabled != gSavedPerAccountSettings.getBOOL("UseAOStands"))
            {
                if (aoStandsWasEnabled)
                {
                    aoMessage = LLTrans::getString("FSAOStandsPausedScript");
                }
                else
                {
                    aoMessage = LLTrans::getString("FSAOStandsResumedScript");
                }
            }

            if (!aoMessage.empty())
            {
                LLSD args;
                args["AO_MESSAGE"] = aoMessage;
                LLNotificationsUtil::add("FSAOScriptedNotification", args);
            }
            // </FS:Zi>
        }
    }
    //</FS:TS> FIRE-962

    // <FS:PP> Get script info response
    else if (tag == "<bridgeGetScriptInfo>")
    {
        size_t tag_size = tag.size();
        status = true;
        size_t getScriptInfoEnd = message.find("</bridgeGetScriptInfo>");
        if (getScriptInfoEnd != std::string::npos)
        {
            std::string getScriptInfoString = static_cast<std::string>(message.substr(tag_size, getScriptInfoEnd - tag_size));
            std::istringstream strStreamGetScriptInfo(getScriptInfoString);
            std::string scriptInfoToken;
            LLSD scriptInfoArray = LLSD::emptyArray();
            S32 scriptInfoArrayCount = 0;
            while (std::getline(strStreamGetScriptInfo, scriptInfoToken, ','))
            {
                LLStringUtil::trim(scriptInfoToken);
                if (scriptInfoArrayCount == 0 || scriptInfoArrayCount == 6 || scriptInfoArrayCount == 11 || scriptInfoArrayCount == 12 || scriptInfoArrayCount == 13 || scriptInfoArrayCount == 14 || scriptInfoArrayCount == 25)
                {
                    // First value, OBJECT_NAME, should be passed from Bridge as encoded in base64
                    // Encoding eliminates problems with special characters and commas for CSV
                    S32 base64Length = apr_base64_decode_len(scriptInfoToken.c_str());
                    if (base64Length)
                    {
                        std::vector<U8> base64VectorData;
                        base64VectorData.resize(base64Length);
                        base64Length = apr_base64_decode_binary(&base64VectorData[0], scriptInfoToken.c_str());
                        base64VectorData.resize(base64Length);
                        std::string base64FinalData(base64VectorData.begin(), base64VectorData.end());
                        scriptInfoToken = base64FinalData;
                    }
                    else
                    {
                        LL_WARNS("FSLSLBridge") << "ScriptInfo - value with index " << scriptInfoArrayCount << " cannot be decoded" << LL_ENDL;
                    }
                }
                scriptInfoArray.append(scriptInfoToken);
                ++scriptInfoArrayCount;
            }

            if (scriptInfoArrayCount == 6 || scriptInfoArrayCount == 27)
            {
                LLStringUtil::format_map_t args;
                args["OBJECT_NAME"] = scriptInfoArray[0].asString();
                args["OBJECT_RUNNING_SCRIPT_COUNT"] = scriptInfoArray[1].asString();
                args["OBJECT_TOTAL_SCRIPT_COUNT"] = scriptInfoArray[2].asString();
                args["OBJECT_SCRIPT_MEMORY"] = scriptInfoArray[3].asString();
                args["OBJECT_SCRIPT_TIME"] = scriptInfoArray[4].asString();
                if (scriptInfoArray[5].asString() != "0.000000")
                {
                    LLStringUtil::format_map_t args2;
                    args2["OBJECT_CHARACTER_TIME"] = scriptInfoArray[5].asString();
                    args["PATHFINDING_TEXT"] = " " + FSCommon::format_string(LLTrans::getString("fsbridge_script_info_pf"), args2);
                }
                else
                {
                    args["PATHFINDING_TEXT"] = "";
                }
                FSCommon::report_to_nearby_chat(FSCommon::format_string(LLTrans::getString("fsbridge_script_info"), args));
                if (scriptInfoArrayCount == 27)
                {
                    LLStringUtil::format_map_t args3;
                    args3["OBJECT_DESC"] = scriptInfoArray[6].asString();
                    args3["OBJECT_ROOT"] = scriptInfoArray[7].asString();
                    args3["OBJECT_PRIM_COUNT"] = scriptInfoArray[8].asString();
                    args3["OBJECT_PRIM_EQUIVALENCE"] = scriptInfoArray[9].asString();
                    args3["OBJECT_TOTAL_INVENTORY_COUNT"] = scriptInfoArray[10].asString();
                    args3["OBJECT_VELOCITY"] = scriptInfoArray[11].asString();
                    args3["OBJECT_POS"] = scriptInfoArray[12].asString();
                    args3["OBJECT_ROT"] = scriptInfoArray[13].asString();
                    args3["OBJECT_OMEGA"] = scriptInfoArray[14].asString();
                    args3["OBJECT_CREATOR"] = LLSLURL("agent", scriptInfoArray[15].asUUID(), "inspect").getSLURLString();
                    args3["OBJECT_OWNER"] = scriptInfoArray[16].asUUID().isNull() ? LLTrans::getString("GroupOwned") : LLSLURL("agent", scriptInfoArray[16].asUUID(), "inspect").getSLURLString();
                    args3["OBJECT_LAST_OWNER_ID"] = scriptInfoArray[17].asUUID().notNull() ? LLSLURL("agent", scriptInfoArray[17].asUUID(), "inspect").getSLURLString() : "---";
                    args3["OBJECT_REZZER_KEY"] = scriptInfoArray[18].asString();
                    args3["OBJECT_GROUP"] = scriptInfoArray[19].asUUID().notNull() ? LLSLURL("group", scriptInfoArray[19].asUUID(), "inspect").getSLURLString() : "---";
                    args3["OBJECT_CREATION_TIME"] = scriptInfoArray[20].asString();
                    args3["OBJECT_REZ_TIME"] = scriptInfoArray[21].asString();
                    args3["OBJECT_PATHFINDING_TYPE"] = scriptInfoArray[22].asString();
                    args3["OBJECT_ATTACHED_POINT"] = (scriptInfoArray[23].asInteger() < 1 || scriptInfoArray[23].asInteger() > 255) ? "---" : LLTrans::getString(LLAvatarAppearance::getAttachmentPointName(scriptInfoArray[23].asInteger()));
                    args3["OBJECT_TEMP_ATTACHED"] = scriptInfoArray[24].asInteger() == 1 ? LLTrans::getString("Yes") : LLTrans::getString("No");
                    args3["AVATAR_POS"] = scriptInfoArray[25].asString();
                    args3["INSPECTING_KEY"] = scriptInfoArray[26].asString();
                    FSCommon::report_to_nearby_chat(FSCommon::format_string(LLTrans::getString("fsbridge_script_info_ext"), args3));
                }
            }
            else
            {
                FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_error_scriptinfonotfound"));
                LL_WARNS("FSLSLBridge") << "ScriptInfo - Object to check is invalid or out of range (warning returned by viewer, data somehow passed bridge script check)" << LL_ENDL;
            }

        }
        else
        {
            FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_error_scriptinfomalformed"));
            LL_WARNS("FSLSLBridge") << "ScriptInfo - Received malformed response from bridge (missing ending tag)" << LL_ENDL;
        }
    }
    // </FS:PP>

    // <FS:PP> Movelock state response
    else if (tag == "<bridgeMovelock ")
    {
        status = true;
        size_t valuepos = message.find(FS_STATE_ATTRIBUTE);
        if (valuepos != std::string::npos)
        {
            if (message.substr(valuepos + FS_STATE_ATTRIBUTE.size(), 1) == "1")
            {
                LLNotificationsUtil::add("MovelockEnabled", LLSD());
            }
            else if (message.substr(valuepos + FS_STATE_ATTRIBUTE.size(), 1) == "0")
            {
                LLNotificationsUtil::add("MovelockDisabled", LLSD());
            }
            else
            {
                LL_WARNS("FSLSLBridge") << "Movelock - Received unknown state" << LL_ENDL;
            }
        }
    }
    // </FS:PP>

    // <FS:PP> Error responses handling
    else if (tag == "<bridgeError ")
    {
        status = true;
        size_t valuepos = message.find(FS_ERROR_ATTRIBUTE);
        if (valuepos != std::string::npos)
        {
            if (message.substr(valuepos + FS_ERROR_ATTRIBUTE.size(), 9) == "injection")
            {
                FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_error_injection"));
                LL_WARNS("FSLSLBridge") << "Script injection detected" << LL_ENDL;
            }
            else if (message.substr(valuepos + FS_ERROR_ATTRIBUTE.size(), 18) == "scriptinfonotfound")
            {
                FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_error_scriptinfonotfound"));
                LL_WARNS("FSLSLBridge") << "ScriptInfo - Object to check is invalid or out of range (warning returned by bridge)" << LL_ENDL;
            }
            else if (message.substr(valuepos + FS_ERROR_ATTRIBUTE.size(), 7) == "wrongvm")
            {
                FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_error_wrongvm"));
                LL_WARNS("FSLSLBridge") << "Script is using old LSO (16 KB memory limit) instead of new Mono (64 KB memory limit) virtual machine, which creates high probability of stack-heap collision and bridge failure by running out of memory" << LL_ENDL;
            }
            else
            {
                LL_WARNS("FSLSLBridge") << "ErrorReporting - Received unknown error type" << LL_ENDL;
            }
        }
    }
    // </FS:PP>

    return status;
}

bool FSLSLBridge::canUseBridge()
{
    static LLCachedControl<bool> sUseLSLBridge(gSavedSettings, "UseLSLBridge");
    return (isBridgeValid() && sUseLSLBridge && !mCurrentURL.empty());
}

bool FSLSLBridge::viewerToLSL(std::string_view message, Callback_t aCallback)
{
    LL_DEBUGS("FSLSLBridge") << message << LL_ENDL;

    if (!canUseBridge())
    {
        return false;
    }

    Callback_t pCallback = aCallback;
    if (!pCallback)
    {
        pCallback = FSLSLBridgeRequest_Success;
    }

    // Calling data() should be fine here since message is a view on a null-terminated string
    LLCoreHttpUtil::HttpCoroutineAdapter::callbackHttpPost(mCurrentURL, LLSD(message.data()), pCallback, FSLSLBridgeRequest_Failure);

    return true;
}

bool FSLSLBridge::updateBoolSettingValue(const std::string& msgVal)
{
    const std::string boolVal = gSavedPerAccountSettings.getBOOL(msgVal) ? "1" : "0";
    return viewerToLSL(msgVal + "|" + boolVal);
}

bool FSLSLBridge::updateBoolSettingValue(const std::string& msgVal, bool contentVal)
{
    const std::string boolVal = contentVal ? "1" : "0";
    return viewerToLSL(msgVal + "|" + boolVal);
}

void FSLSLBridge::updateIntegrations()
{
    viewerToLSL(llformat(
        "ExternalIntegration|%d|%d",
        gSavedPerAccountSettings.getBOOL("BridgeIntegrationOC"),
        gSavedPerAccountSettings.getBOOL("BridgeIntegrationLM")
    ) );
}

//
//Bridge initialization
//
void FSLSLBridge::recreateBridge()
{
    LL_INFOS("FSLSLBridge") << "Recreating bridge start" << LL_ENDL;

    // Don't create on OpenSim. We need to fallback to another creation process there, unfortunately.
    // There is no way to ensure a rock object will ever be in a grid's Library.
#if OPENSIM
    if (LLGridManager::getInstance()->isInOpenSim())
    {
        return;
    }
#endif

    if (!gSavedSettings.getBOOL("UseLSLBridge"))
    {
        //<FS:TS> FIRE-11746: Recreate should throw error if disabled
        LL_WARNS("FSLSLBridge") << "Asked to create bridge, but bridge is disabled. Aborting." << LL_ENDL;
        FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_cant_create_disabled"));
        setBridgeCreating(false);
        //</FS:TS> FIRE-11746
        return;
    }

    if (gSavedSettings.getBOOL("NoInventoryLibrary"))
    {
        LL_WARNS("FSLSLBridge") << "Asked to create bridge, but we don't have a library. Aborting." << LL_ENDL;
        FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_no_library"));
        setBridgeCreating(false);
        return;
    }

    if (mBridgeCreating)
    {
        LL_WARNS("FSLSLBridge") << "Bridge creation already in progress, aborting new attempt." << LL_ENDL;
        FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_already_creating"));
        return;
    }

    //announce yourself
    FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_creating"));

    setupFSCategory([](const LLUUID& bridge_folder_id)
        {
            FSLSLBridgeInventoryPreCreationCleanupObserver* bridgeInventoryObserver = new FSLSLBridgeInventoryPreCreationCleanupObserver(bridge_folder_id);
            bridgeInventoryObserver->startFetch();
            if (bridgeInventoryObserver->isFinished())
            {
                bridgeInventoryObserver->done();
            }
            else
            {
                gInventory.addObserver(bridgeInventoryObserver);
            }
        });
}

void FSLSLBridge::cleanUpPreCreation()
{
    LL_INFOS("FSLSLBridge") << "Starting clean up prior creation - bridge category has been loaded" << LL_ENDL;

    LLInventoryModel::cat_array_t cats;
    LLInventoryModel::item_array_t items;
    NameCollectFunctor namefunctor(mCurrentFullName);
    gInventory.collectDescendentsIf(getBridgeFolder(), cats, items, false, namefunctor);

    mAllowedDetachables.clear();
    for (const auto& item : items)
    {
        const LLUUID& item_id = item->getUUID();
        if (get_is_item_worn(item_id))
        {
            LL_INFOS("FSLSLBridge") << "Found worn object " << item_id << " bridge category - detaching..." << LL_ENDL;
            mAllowedDetachables.push_back(item_id);
            LLVOAvatarSelf::detachAttachmentIntoInventory(item_id);
        }
    }

    // Immediately start with finishCleanUpPreCreation if we don't have
    // any attachments we need to wait for until they got detached
    if (mAllowedDetachables.size() == 0)
    {
        LL_INFOS("FSLSLBridge") << "Not waiting for any objects to get detached. Starting pre-creation cleanup immediately" << LL_ENDL;
        finishCleanUpPreCreation();
    }
    else
    {
        LL_INFOS("FSLSLBridge") << "Waiting for any objects to get detached. Pre-creation cleanup will start after objects got detached" << LL_ENDL;
    }
}

// Called either by cleanUpPreCreation directly or via FSLSLBridgeStartCreationTimer
// after all pending detachments have been processed
void FSLSLBridge::finishCleanUpPreCreation()
{
    LL_INFOS("FSLSLBridge") << "Finishing cleanup prior creation" << LL_ENDL;

    LLInventoryModel::cat_array_t cats;
    LLInventoryModel::item_array_t items;
    NameCollectFunctor namefunctor(mCurrentFullName);
    gInventory.collectDescendentsIf(getBridgeFolder(), cats, items, false, namefunctor);

    for (const auto& item : items)
    {
        LL_INFOS("FSLSLBridge") << "Bridge folder cleanup: Deleting " << item->getName() << " (" << item->getUUID() << ")" << LL_ENDL;
        remove_inventory_item(item->getUUID(), nullptr, true); // Don't wait for callback from server to update inventory model
    }
    gInventory.notifyObservers();

    // clear the stored bridge ID - we are starting over.
    mpBridge = nullptr; //the object itself will get cleaned up when new one is created.
    mCurrentURL.clear();

    setBridgeCreating(true);
    mFinishCreation = false;

    createNewBridge();
}

// Called by RlvAttachmentLockWatchdog::onDetach to check if attachment
// is allowed to get detached - required if attachment spot is locked!
bool FSLSLBridge::canDetach(const LLUUID& item_id)
{
    LL_DEBUGS("FSLSLBridge") << "canDetach" << LL_ENDL;
    return ((mpBridge && item_id == mpBridge->getUUID()) || (std::find(mAllowedDetachables.begin(), mAllowedDetachables.end(), item_id) != mAllowedDetachables.end()));
}

void FSLSLBridge::initBridge()
{
    LL_INFOS("FSLSLBridge") << "Initializing FSLSLBridge" << LL_ENDL;

    if (!gSavedSettings.getBOOL("UseLSLBridge"))
    {
        return;
    }

    if (gSavedSettings.getBOOL("NoInventoryLibrary"))
    {
        LL_WARNS("FSLSLBridge") << "Asked to create bridge, but we don't have a library. Aborting." << LL_ENDL;
        FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_no_library"));
        setBridgeCreating(false);
        return;
    }

    setupFSCategory([this](const LLUUID& bridge_folder_id)
        {
            LLUUID libCatID = findFSBridgeContainerCategory();

            //check for inventory load
            // AH: Use overloaded LLInventoryFetchDescendentsObserver to check for load of
            // bridge and bridge rock category before doing anything!
            LL_INFOS("FSLSLBridge") << "initBridge called. gInventory.isInventoryUsable = " << (gInventory.isInventoryUsable() ? "true" : "false") << LL_ENDL;
            uuid_vec_t cats{ bridge_folder_id, libCatID };
            FSLSLBridgeInventoryObserver* bridgeInventoryObserver = new FSLSLBridgeInventoryObserver(cats);
            bridgeInventoryObserver->startFetch();
            if (bridgeInventoryObserver->isFinished())
            {
                bridgeInventoryObserver->done();
            }
            else
            {
                gInventory.addObserver(bridgeInventoryObserver);
            }
        });
}


// Gets called by the Init, when inventory loaded (FSLSLBridgeInventoryObserver::done()).
void FSLSLBridge::startCreation()
{
    LL_INFOS("FSLSLBridge") << "Entering startCreation" << LL_ENDL;

    if (getBridgeCreating())
    {
        LL_INFOS("FSLSLBridge") << "startCreation called while recreating bridge - aborting" << LL_ENDL;
        return;
    }

    if (!isAgentAvatarValid())
    {
        LL_WARNS("FSLSLBridge") << "AgentAvatar is not valid" << LL_ENDL;
        return;
    }

    LL_INFOS("FSLSLBridge") << "startCreation called. gInventory.isInventoryUsable = " << (gInventory.isInventoryUsable() ? "true" : "false") << LL_ENDL;

    //if bridge object doesn't exist - create and attach it, update script.
    setupFSCategory([this](const LLUUID& bridge_folder_id)
        {
            LLViewerInventoryItem* fsBridge = findInvObject(mCurrentFullName, bridge_folder_id);

            //detach everything else
            LL_INFOS("FSLSLBridge") << "Detaching other bridges..." << LL_ENDL;
            detachOtherBridges();

            if (!fsBridge)
            {
                LL_INFOS("FSLSLBridge") << "Bridge not found in inventory, creating new one..." << LL_ENDL;
                // Don't create on OpenSim. We need to fallback to another creation process there, unfortunately.
                // There is no way to ensure a rock object will ever be in a grid's Library.
#if OPENSIM
                if (LLGridManager::getInstance()->isInOpenSim())
                {
                    return;
                }
#endif
                setBridgeCreating(true);
                mFinishCreation = false;
                //announce yourself
                FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_creating"));

                createNewBridge();
            }
            else
            {
                //TODO need versioning - see isOldBridgeVersion()
                mpBridge = fsBridge;
                if (!isItemAttached(mpBridge->getUUID()))
                {
                    if (!LLAppearanceMgr::instance().getIsInCOF(mpBridge->getUUID()))
                    {
                        LL_INFOS("FSLSLBridge") << "Bridge not attached but found in inventory, reattaching..." << LL_ENDL;

                        //Is this a valid bridge - wear it.
                        LLAttachmentsMgr::instance().addAttachmentRequest(mpBridge->getUUID(), FS_BRIDGE_POINT, true, true);
                        //from here, the attach should report to ProcessAttach and make sure bridge is valid.
                    }
                    else
                    {
                        LL_INFOS("FSLSLBridge") << "Bridge not found but in CoF. Waiting for automatic attach..." << LL_ENDL;
                    }
                }
            }
        });
}

void FSLSLBridge::createNewBridge()
{
    //check if user has a bridge
    const LLUUID catID = getBridgeFolder();

    //attach the Linden rock from the library (will resize as soon as attached)
    const LLUUID libID = gInventory.getLibraryRootFolderID();
    LLViewerInventoryItem* libRock = findInvObject(LIB_ROCK_NAME, libID);
    //shouldn't happen but just in case
    if (libRock)
    {
        LL_INFOS("FSLSLBridge") << "Cloning a new Bridge container from the Library..." << LL_ENDL;

        //copy the library item to inventory and put it on
        LLPointer<LLInventoryCallback> cb = new FSLSLBridgeRezCallback();
        copy_inventory_item(gAgent.getID(), libRock->getPermissions().getOwner(), libRock->getUUID(), catID, mCurrentFullName, cb);
    }
    else
    {
        LL_WARNS("FSLSLBridge") << "Bridge container not found in the Library!" << LL_ENDL;
        // AH: Set to false or we won't be able to start another bridge creation
        // process in this session!
        setBridgeCreating(false);
    }
}

void FSLSLBridge::processAttach(LLViewerObject* object, const LLViewerJointAttachment* attachment)
{
    LL_INFOS("FSLSLBridge") << "Entering processAttach, checking the bridge container - gInventory.isInventoryUsable = " << (gInventory.isInventoryUsable() ? "true" : "false") << LL_ENDL;

    if ((!gAgentAvatarp->isSelf()) || (attachment->getName() != FS_BRIDGE_ATTACHMENT_POINT_NAME))
    {
        LL_WARNS("FSLSLBridge") << "Bridge not created. Our bridge container attachment isn't named correctly." << LL_ENDL;
        if (mBridgeCreating)
        {
            FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_failure_creation_bad_name"));
            setBridgeCreating(false); //in case we interrupted the creation
        }
        return;
    }

    LLViewerInventoryItem* fsObject = gInventory.getItem(object->getAttachmentItemID());
    if (!fsObject) //just in case
    {
        LL_WARNS("FSLSLBridge") << "Bridge container is still NULL in inventory. Aborting." << LL_ENDL;
        if (mBridgeCreating)
        {
            FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_failure_creation_null"));
            setBridgeCreating(false); //in case we interrupted the creation
        }
        return;
    }

    if (!mpBridge) //user is attaching an existing bridge?
    {
        LL_INFOS("FSLSLBridge") << "mpBridge is NULL" << LL_ENDL;

        //is it the right version?
        if (fsObject->getName() != mCurrentFullName)
        {
            mAllowDetach = true;
            LLVOAvatarSelf::detachAttachmentIntoInventory(fsObject->getUUID());
            LL_WARNS("FSLSLBridge") << "Attempt to attach to bridge point an object other than current bridge" << LL_ENDL;
            FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_failure_attach_wrong_object"));
            if (mBridgeCreating)
            {
                setBridgeCreating(false); //in case we interrupted the creation
            }
            return;
        }

        //is it in the right place?
        const LLUUID catID = findFSCategory();
        if (catID != fsObject->getParentUUID())
        {
            //the object is not where we think it is. Kick it off.
            mAllowDetach = true;
            LLVOAvatarSelf::detachAttachmentIntoInventory(fsObject->getUUID());
            LL_WARNS("FSLSLBridge") << "Bridge container isn't in the correct inventory location. Detaching it and aborting." << LL_ENDL;
            if (mBridgeCreating)
            {
                FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_failure_attach_wrong_location"));
                setBridgeCreating(false); //in case we interrupted the creation
            }
            return;
        }
        mpBridge = fsObject;
    }

    LL_INFOS("FSLSLBridge") << "Bridge container is attached, mpBridge not NULL, avatar is self, point is bridge, all is good." << LL_ENDL;

    if (fsObject->getUUID() != mpBridge->getUUID())
    {
        //something odd just got attached to bridge?
        LL_WARNS("FSLSLBridge") << "Something unknown just got attached to bridge point, detaching and aborting." << LL_ENDL;
        if (mBridgeCreating)
        {
            FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_failure_attach_point_in_use"));
            setBridgeCreating(false); //in case we interrupted the creation
        }
        LLVOAvatarSelf::detachAttachmentIntoInventory(mpBridge->getUUID());
        return;
    }
    LL_DEBUGS("FSLSLBridge") << "Bridge container found is the same bridge we saved, id matched." << LL_ENDL;

    if (!mBridgeCreating) //just an attach. See what it is
    {
        // AH: We need to request objects inventory first before we can
        // do anything with it!
        LL_INFOS("FSLSLBridge") << "Requesting bridge inventory contents..." << LL_ENDL;
        object->registerInventoryListener(this, nullptr);
        object->requestInventory();
    }
    else
    {
        configureBridgePrim(object);
    }
}

void FSLSLBridge::inventoryChanged(LLViewerObject* object,
                                LLInventoryObject::object_list_t* inventory,
                                S32 serial_num,
                                void* user_data)
{
    object->removeInventoryListener(this);

    LL_INFOS("FSLSLBridge") << "Received object inventory for existing bridge prim. Checking contents..." << LL_ENDL;

    //are we attaching the right thing? Check size and script
    LLInventoryObject::object_list_t inventory_objects;
    object->getInventoryContents(inventory_objects);

    if (object->flagInventoryEmpty())
    {
        LL_INFOS("FSLSLBridge") << "Empty bridge detected- re-enter creation process" << LL_ENDL;
        setBridgeCreating(true);
    }
    else if (inventory_objects.size() > 0)
    {
        S32 count(0);

        LLInventoryObject::object_list_t::iterator it = inventory_objects.begin();
        LLInventoryObject::object_list_t::iterator end = inventory_objects.end();
        bool isOurScript = false;
        for ( ; it != end; ++it)
        {
            LLInventoryItem* item = ((LLInventoryItem*)((LLInventoryObject*)(*it)));

            // AH: Somehow always contains a wonky object item with creator
            // UUID = NULL UUID and asset type AT_NONE - don't count it
            if (item->getType() != LLAssetType::AT_NONE)
            {
                count++;
            }

            if (item->getType() == LLAssetType::AT_LSL_TEXT)
            {
                if (item->getCreatorUUID() == gAgentID)
                {
                    isOurScript = true;
                }
                else //problem, not our script
                {
                    LL_WARNS("FSLSLBridge") << "The bridge inventory contains a script not created by user." << LL_ENDL;
                }
            }
        }
        if (count == 1 && isOurScript) //We attached a valid bridge. Run along.
        {
            LL_INFOS("FSLSLBridge") << "Bridge inventory is okay." << LL_ENDL;
        }
        else
        {
            FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_warning_unexpected_items"));
            LL_WARNS("FSLSLBridge") << "The bridge inventory contains items other than bridge script." << LL_ENDL;
            if (!isOurScript)   //some junk but no valid script? Unlikely to happen, but lets add script anyway.
            {
                setBridgeCreating(true);
            }
        }
    }
    else
    {
        LL_WARNS("FSLSLBridge") << "Bridge not empty, but we're unable to retrieve contents." << LL_ENDL;
    }

    //modify the rock size and texture
    if (getBridgeCreating())
    {
        mFinishCreation = false;
        configureBridgePrim(object);
    }
    else if (mFinishCreation)
    {
        LL_INFOS("FSLSLBridge") << "Bridge created." << LL_ENDL;
        mFinishCreation = false;
        mAllowedDetachables.clear();
        FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_created"));
    }
}

void FSLSLBridge::configureBridgePrim(LLViewerObject* object)
{
    if (!isBridgeValid())
    {
        LL_WARNS("FSLSLBridge") << "Bridge not valid" << LL_ENDL;
        return;
    }

    //modify the rock size and texture
    LL_INFOS("FSLSLBridge") << "Bridge container found after attachment, configuring prim..." << LL_ENDL;
    setupBridgePrim(object);

    //add bridge script to object
    LL_INFOS("FSLSLBridge") << "Creating bridge script..." << LL_ENDL;
    create_script_inner();
}

void FSLSLBridge::processDetach(LLViewerObject* object, const LLViewerJointAttachment* attachment)
{
    LL_INFOS("FSLSLBridge") << "Entering processDetach" << LL_ENDL;

    // Begin cleanup part
    uuid_vec_t::iterator found = std::find(mAllowedDetachables.begin(), mAllowedDetachables.end(), object->getAttachmentItemID());
    if (found != mAllowedDetachables.end())
    {
        mAllowedDetachables.erase(found);
        if (mAllowedDetachables.size() == 0)
        {
            LL_INFOS("FSLSLBridge") << "No attached objects left. Starting creation timer..." << LL_ENDL;
            // Wait a few seconds before calling finishCleanUpPreCreation
            // which will clean up the LSLBridge folder
            new FSLSLBridgeStartCreationTimer();
        }
        return;
    }
    // End cleanup part

    if (gSavedSettings.getBOOL("UseLSLBridge") && !mAllowDetach)
    {
        LL_INFOS("FSLSLBridge") << "Re-attaching bridge" << LL_ENDL;
        LLViewerInventoryItem* inv_object = gInventory.getItem(object->getAttachmentItemID());
        if (inv_object && FSLSLBridge::instance().mpBridge && FSLSLBridge::instance().mpBridge->getUUID() == inv_object->getUUID())
        {
            LLAttachmentsMgr::instance().addAttachmentRequest(inv_object->getUUID(), FS_BRIDGE_POINT, true, true);
        }

        return;
    }
    mAllowDetach = false;

    if (gAgentAvatarp.isNull() || (!gAgentAvatarp->isSelf()) || (!attachment) || (attachment->getName() != FS_BRIDGE_ATTACHMENT_POINT_NAME))
    {
        LL_WARNS("FSLSLBridge") << "Couldn't detach bridge, object has wrong name or avatar wasn't self." << LL_ENDL;
        return;
    }

    LLViewerInventoryItem* fsObject = gInventory.getItem(object->getAttachmentItemID());
    if (!fsObject) //just in case
    {
        LL_WARNS("FSLSLBridge") << "Couldn't detach bridge. inventory object was NULL." << LL_ENDL;
        return;
    }

    if (mFinishCreation)
    {
        LL_INFOS("FSLSLBridge") << "Bridge detached to save settings. Starting re-attach timer..." << LL_ENDL;
        mReattachBridgeUUID = object->getAttachmentItemID();
        new FSLSLBridgeReAttachTimer();
        return;
    }

    //is it in the right place?
    const LLUUID catID = findFSCategory();
    if (catID != fsObject->getParentUUID())
    {
        //that was in the wrong place. It's not ours.
        LL_WARNS("FSLSLBridge") << "Bridge seems to be the wrong inventory category. Aborting detachment." << LL_ENDL;
        return;
    }
    if (mpBridge && mpBridge->getUUID() == fsObject->getUUID())
    {
        mpBridge = nullptr;
        FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_detached"));
        mIsFirstCallDone = false;
        if (mBridgeCreating)
        {
            FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_warning_not_finished"));
            setBridgeCreating(false); //in case we interrupted the creation
            mAllowedDetachables.clear();
        }
    }

    LL_INFOS("FSLSLBridge") << "processDetach Finished" << LL_ENDL;
}

void FSLSLBridge::setupBridgePrim(LLViewerObject* object)
{
    LL_DEBUGS("FSLSLBridge") << "Entering bridge container setup..." << LL_ENDL;

    if (!object->getRegion())
        return;

    LLProfileParams profParams(LL_PCODE_PROFILE_CIRCLE, 0.230f, 0.250f, 0.95f);
    LLPathParams pathParams(LL_PCODE_PATH_CIRCLE, 0.2f, 0.22f,
        0.f, 350.f,     //scale
        0.f, 0.f,       //shear
        0.f, 0.f,       //twist
        0.f,            //offset
        0.f, 0.f,       //taper
        0.05f, 0.05f);  //revolutions, skew
    pathParams.setRevolutions(1.f);
    object->setVolume(LLVolumeParams(profParams, pathParams), 0);
    object->sendShapeUpdate();

    // Set scale and position
    object->setScale(LLVector3(0.01f, 0.01f, 0.01f));
    object->setPosition(LLVector3(2.f, 2.f, 2.f));
    LLManip::rebuild(object);
    gAgentAvatarp->clampAttachmentPositions();

    U8 data[24];
    htolememcpy(&data[0], &(object->getPosition().mV), MVT_LLVector3, 12);
    htolememcpy(&data[12], &(object->getScale().mV), MVT_LLVector3, 12);

    gMessageSystem->newMessage("MultipleObjectUpdate");
    gMessageSystem->nextBlockFast(_PREHASH_AgentData);
    gMessageSystem->addUUIDFast(_PREHASH_AgentID, gAgentID);
    gMessageSystem->addUUIDFast(_PREHASH_SessionID, gAgentSessionID);
    gMessageSystem->nextBlockFast(_PREHASH_ObjectData);
    gMessageSystem->addU32Fast(_PREHASH_ObjectLocalID, object->getLocalID());
    gMessageSystem->addU8Fast(_PREHASH_Type, UPD_POSITION | UPD_SCALE | UPD_LINKED_SETS);
    gMessageSystem->addBinaryDataFast(_PREHASH_Data, data, 24);
    gMessageSystem->sendReliable(object->getRegion()->getHost());

    // Set textures
    for (U8 i = 0; i < object->getNumTEs(); ++i)
    {
        LLViewerTexture* image = LLViewerTextureManager::getFetchedTexture( IMG_INVISIBLE );
        object->setTEImage(i, image); //transparent texture
    }
    object->sendTEUpdate();

    object->addFlags(FLAGS_TEMPORARY_ON_REZ);
    object->updateFlags();

    object->setChanged(LLXform::MOVED | LLXform::SILHOUETTE | LLXform::TEXTURE);
    object->markForUpdate();

    LL_DEBUGS("FSLSLBridge") << "End bridge container setup." << LL_ENDL;
}

void FSLSLBridge::create_script_inner()
{
    if (!isBridgeValid())
    {
        LL_WARNS("FSLSLBridge") << "Bridge no valid" << LL_ENDL;
        return;
    }

    const LLUUID catID = getBridgeFolder();

    LLPointer<LLInventoryCallback> cb = new FSLSLBridgeScriptCallback();
    create_inventory_item(gAgentID,
                            gAgentSessionID,
                            catID,
                            LLTransactionID::tnull,
                            mCurrentFullName,
                            mCurrentFullName,
                            LLAssetType::AT_LSL_TEXT,
                            LLInventoryType::IT_LSL,
                            NO_INV_SUBTYPE,
                            PERM_ALL,
                            cb);
}

//
// Bridge rez callback
//
void FSLSLBridgeRezCallback::fire(const LLUUID& inv_item)
{
    // this is the first attach - librock got copied and worn on hand - but the ID is now real.
    if ((FSLSLBridge::instance().getBridge() != NULL))
    {
        LL_INFOS("FSLSLBridge") << "Ignoring bridgerezcallback, already have bridge" << LL_ENDL;
        return;
    }

    if (inv_item.isNull())
    {
        LL_INFOS("FSLSLBridge") << "Ignoring bridgerezcallback, new bridge is null" << LL_ENDL;
        return;
    }

    if (!FSLSLBridge::instance().getBridgeCreating())
    {
        LL_INFOS("FSLSLBridge") << "Ignoring bridgerezcallback, we're not flagged as creating a bridge." << LL_ENDL;
        return;
    }

    if (!isAgentAvatarValid())
    {
        LL_WARNS("FSLSLBridge") << "Agent is 0, bailing out" << LL_ENDL;
        return;
    }

    LL_INFOS("FSLSLBridge") << "Bridge rez callback fired, looking for object..." << LL_ENDL;

    LLViewerInventoryItem* item = gInventory.getItem(inv_item);

    item->setDescription(item->getName());
    item->setComplete(true);
    item->updateServer(false);

    gInventory.updateItem(item);
    gInventory.notifyObservers();

    //from this point on, this is our bridge - accept no substitutes!
    FSLSLBridge::instance().setBridge(item);

    LL_INFOS("FSLSLBridge") << "Attaching bridge to the 'bridge' attachment point..." << LL_ENDL;
    LLAttachmentsMgr::instance().addAttachmentRequest(inv_item, FS_BRIDGE_POINT, true, true);
}


//
// Bridge script creation callback
//
void FSLSLBridgeScriptCallback::fire(const LLUUID& inv_item)
{
    if (inv_item.isNull() || !FSLSLBridge::instance().getBridgeCreating())
    {
        LL_WARNS("FSLSLBridge") << "BridgeScriptCallback fired, but target item was null or bridge isn't marked as under creation. Ignoring." << LL_ENDL;
        return;
    }

    LLViewerInventoryItem* item = gInventory.getItem(inv_item);
    if (!item)
    {
        LL_WARNS("FSLSLBridge") << "BridgeScriptCallback Can't find target item in inventory. Ignoring." << LL_ENDL;
        return;
    }

    if (!isAgentAvatarValid())
    {
        LL_WARNS("FSLSLBridge") << "Agent is 0, bailing out" << LL_ENDL;
        return;
    }

    gInventory.updateItem(item);
    gInventory.notifyObservers();

    LLViewerObject* obj(nullptr);

    if (FSLSLBridge::instance().isBridgeValid())
    {
        obj = gAgentAvatarp->getWornAttachment(FSLSLBridge::instance().getBridge()->getUUID());
    }
    else
    {
        LL_WARNS("FSLSLBridge") << "Bridge non valid" << LL_ENDL;
    }

    //caps import
    std::string url = gAgent.getRegionCapability("UpdateScriptAgent");

    bool cleanup = false;
    if (!url.empty() && obj)
    {
        std::string buffer;
        const std::string fName = prepUploadFile(buffer);
        if (!fName.empty())
        {
            LL_INFOS("FSLSLBridge") << "Updating script ID for bridge and enqueing upload. Inventory ID: " << inv_item.asString() << LL_ENDL;
            FSLSLBridge::instance().mScriptItemID = inv_item;

            LLResourceUploadInfo::ptr_t uploadInfo(std::make_shared<LLScriptAssetUpload>(obj->getID(), inv_item, LLScriptAssetUpload::MONO, true, LLUUID::null, buffer,
                [](LLUUID, LLUUID, LLUUID, LLSD) {
                    FSLSLBridge::getInstance()->setTimerResult(FSLSLBridge::SCRIPT_UPLOAD_FINISHED);
                }, nullptr));
            LLViewerAssetUpload::EnqueueInventoryUpload(url, uploadInfo);
        }
        else
        {
            FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_failure_creation_create_script"));
            cleanup = true;
        }
    }
    else
    {
        cleanup = true;
    }

    if (cleanup)
    {
        //can't complete bridge creation - detach and remove object, remove script
        //try to clean up and go away. Fail.
        if (FSLSLBridge::instance().isBridgeValid())
        {
            FSLSLBridge::instance().mAllowDetach = true;
            LLVOAvatarSelf::detachAttachmentIntoInventory(FSLSLBridge::instance().getBridge()->getUUID());
        }

        FSLSLBridge::instance().cleanUpBridge();
        //also clean up script remains
        remove_inventory_item(item->getUUID(), nullptr, true);
        gInventory.notifyObservers();
        LL_WARNS("FSLSLBridge") << "Can't update bridge script. Purging bridge." << LL_ENDL;
        return;
    }
}

std::string FSLSLBridgeScriptCallback::prepUploadFile(std::string &aBuffer)
{
    const std::string fName = gDirUtilp->getExpandedFilename(LL_PATH_FS_RESOURCES, UPLOAD_SCRIPT_CURRENT);
    const std::string fNew = gDirUtilp->getExpandedFilename(LL_PATH_CACHE,UPLOAD_SCRIPT_CURRENT);

    LLFILE* fpIn = LLFile::fopen(fName, "rt");
    if (!fpIn)
    {
        LL_WARNS("FSLSLBridge") << "Cannot open script resource file" << LL_ENDL;
        return std::string();
    }
    fseek(fpIn, 0, SEEK_END);
    long lSize = ftell(fpIn);
    rewind(fpIn);

    std::vector< char > vctData;
    vctData.resize(lSize + 1, 0);
    if (lSize != fread(&vctData[0], 1, lSize, fpIn))
    {
        LL_WARNS("FSLSLBridge") << "Size mismatch during read" << LL_ENDL;
    }

    LLFile::close(fpIn);

    aBuffer = ( (char const*)&vctData[0] );

    const std::string bridgekey = "BRIDGEKEY";
    size_t pos = aBuffer.find(bridgekey);
    if (pos == std::string::npos)
    {
        LL_WARNS("FSLSLBridge") << "Invalid bridge script" << LL_ENDL;
        return std::string();
    }
    aBuffer.replace(pos, bridgekey.length(), FSLSLBridge::getInstance()->getBridgeFolder().asString());

    LLFILE *fpOut = LLFile::fopen(fNew, "wt");
    if (!fpOut)
    {
        LL_WARNS("FSLSLBridge") << "Cannot open script upload file" << LL_ENDL;
        return std::string();
    }

    if (aBuffer.size() != fwrite(aBuffer.c_str(), 1, aBuffer.size(), fpOut))
    {
        LL_WARNS("FSLSLBridge") << "Size mismatch during write" << LL_ENDL;
    }
    LLFile::close(fpOut);

    return fNew;
}

void FSLSLBridge::checkBridgeScriptName()
{
    if( !mBridgeCreating )
    {
        LL_WARNS("FSLSLBridge") << "Bridge script length was zero, or bridge was not marked as under creation. Aborting." << LL_ENDL;
        return;
    }

    if (!isBridgeValid())
    {
        LL_WARNS("FSLSLBridge") << "Bridge not valid (anymore)" << LL_ENDL;
        cleanUpBridge();
        return;
    }

    if (!isAgentAvatarValid())
    {
        LL_WARNS("FSLSLBridge") << "No agent avatar" << LL_ENDL;
        cleanUpBridge();
        return;
    }

    //this is our script upload
    LLViewerObject* obj = gAgentAvatarp->getWornAttachment(mpBridge->getUUID());
    if (!obj)
    {
        //something happened to our object. Try to fail gracefully.
        LL_WARNS("FSLSLBridge") << "Couldn't find worn bridge attachment" << LL_ENDL;
        cleanUpBridge();
        return;
    }

    LL_INFOS("FSLSLBridge") << "Saving script " << mScriptItemID.asString() << " in object" << LL_ENDL;
    obj->saveScript(gInventory.getItem(mScriptItemID), true, true);
    new FSLSLBridgeCleanupTimer();
}

void FSLSLBridge::cleanUpBridge()
{
    //something unexpected went wrong. Try to clean up and not crash.
    LL_WARNS("FSLSLBridge") << "Bridge object not found. Can't proceed with creation, exiting." << LL_ENDL;
    FSCommon::report_to_nearby_chat(LLTrans::getString("fsbridge_failure_not_found"));

    if (isBridgeValid())
    {
        remove_inventory_item(mpBridge->getUUID(), nullptr, true);
    }

    gInventory.notifyObservers();
    mpBridge = nullptr;
    mAllowedDetachables.clear();
    setBridgeCreating(false);
}

void FSLSLBridge::finishBridge()
{
    LL_INFOS("FSLSLBridge") << "Finishing bridge" << LL_ENDL;

    setBridgeCreating(false);
    mIsFirstCallDone = false;
    cleanUpOldVersions();
    cleanUpBridgeFolder();
    LL_INFOS("FSLSLBridge") << "Bridge cleaned up" << LL_ENDL;

    mAllowDetach = true;
    mFinishCreation = true;
    if (getBridge())
    {
        LL_INFOS("FSLSLBridge") << "Detaching bridge after cleanup" << LL_ENDL;
        LLVOAvatarSelf::detachAttachmentIntoInventory(getBridge()->getUUID());
    }
    else
    {
        LL_WARNS("FSLSLBridge") << "Cannot detach bridge - mpBridge = NULL" << LL_ENDL;
    }

    LL_INFOS("FSLSLBridge") << "End finishing bridge" << LL_ENDL;
}

//
// Helper functions
//
bool FSLSLBridge::isItemAttached(const LLUUID& iID)
{
    return (isAgentAvatarValid() && gAgentAvatarp->isWearingAttachment(iID));
}

void FSLSLBridge::setupFSCategory(inventory_func_type callback)
{
    if (LLUUID fsCatID = gInventory.findCategoryByName(ROOT_FIRESTORM_FOLDER); !fsCatID.isNull())
    {
        LLInventoryModel::item_array_t* items;
        LLInventoryModel::cat_array_t* cats;
        gInventory.getDirectDescendentsOf(fsCatID, cats, items);
        if (cats)
        {
            for (const auto& cat : *cats)
            {
                if (cat->getName() == FS_BRIDGE_FOLDER)
                {
                    mBridgeFolderID = cat->getUUID();
                    callback(mBridgeFolderID);
                    return;
                }
            }
        }

        gInventory.createNewCategory(fsCatID, LLFolderType::FT_NONE, FS_BRIDGE_FOLDER, [this, callback](const LLUUID& new_cat_id)
            {
                mBridgeFolderID = new_cat_id;
                callback(mBridgeFolderID);
            });
    }
    else
    {
        gInventory.createNewCategory(gInventory.getRootFolderID(), LLFolderType::FT_NONE, ROOT_FIRESTORM_FOLDER, [this, callback](const LLUUID& new_cat_id)
            {
                gInventory.createNewCategory(new_cat_id, LLFolderType::FT_NONE, FS_BRIDGE_FOLDER, [this, callback](const LLUUID& new_cat_id)
                    {
                        mBridgeFolderID = new_cat_id;
                        callback(mBridgeFolderID);
                    });
            });
    }
}

// This used to be the place where the bridge folder was also created before it got moved to setupFSCategory.
// We still need this method because it is used in processAttach / processDetach, which (unfortunately) might be called
// before initBridge is called that sets up the bridge folder. But since apparently a bridge is already attached,
// we can assume the folder already exists and we do not need to create it here anymore. And if something is attached
// to where we attach the bridge and also has the same name as the bridge but is in a different folder, it won't make
// any difference if we return the actual category ID or a null UUID for the check performed in processAttach.
LLUUID FSLSLBridge::findFSCategory()
{
    if (!mBridgeFolderID.isNull())
    {
        return mBridgeFolderID;
    }

    if (LLUUID fsCatID = gInventory.findCategoryByName(ROOT_FIRESTORM_FOLDER); !fsCatID.isNull())
    {
        LLInventoryModel::item_array_t* items;
        LLInventoryModel::cat_array_t* cats;
        gInventory.getDirectDescendentsOf(fsCatID, cats, items);
        if (cats)
        {
            for (const auto& cat : *cats)
            {
                if (cat->getName() == FS_BRIDGE_FOLDER)
                {
                    mBridgeFolderID = cat->getUUID();
                    return mBridgeFolderID;
                }
            }
        }
    }

    return LLUUID::null;
}

LLUUID FSLSLBridge::findFSBridgeContainerCategory()
{
    LL_INFOS("FSLSLBridge") << "Retrieving FSBridge container category (" << FS_BRIDGE_CONTAINER_FOLDER << ")" << LL_ENDL;
    if (mBridgeContainerFolderID.notNull())
    {
        LL_INFOS("FSLSLBridge") << "Returning FSBridge container category UUID from instance: " << mBridgeContainerFolderID << LL_ENDL;
        return mBridgeContainerFolderID;
    }

    LLUUID LibRootID = gInventory.getLibraryRootFolderID();
    if (LibRootID.notNull())
    {
        LLInventoryModel::item_array_t* items;
        LLInventoryModel::cat_array_t* cats;
        gInventory.getDirectDescendentsOf(LibRootID, cats, items);
        if (cats)
        {
            for (const auto& cat : *cats)
            {
                if (cat->getName() == "Objects")
                {
                    const LLUUID& LibObjectsCatID = cat->getUUID();
                    if (LibObjectsCatID.notNull())
                    {
                        LLInventoryModel::item_array_t* objects_items;
                        LLInventoryModel::cat_array_t* objects_cats;
                        gInventory.getDirectDescendentsOf(LibObjectsCatID, objects_cats, objects_items);
                        if (objects_cats)
                        {
                            for (const auto& object_cat : *objects_cats)
                            {
                                if (object_cat->getName() == FS_BRIDGE_CONTAINER_FOLDER)
                                {
                                    mBridgeContainerFolderID = object_cat->getUUID();
                                    LL_INFOS("FSLSLBridge") << "FSBridge container category found in library. UUID: " << mBridgeContainerFolderID << LL_ENDL;
                                    gInventory.fetchDescendentsOf(mBridgeContainerFolderID);
                                    return mBridgeContainerFolderID;
                                }
                            }
                        }
                    }
                }
            }
        }
    }

    LL_WARNS("FSLSLBridge") << "FSBridge container category not found in library!" << LL_ENDL;
    return LLUUID();
}

LLViewerInventoryItem* FSLSLBridge::findInvObject(const std::string& obj_name, const LLUUID& catID)
{
    LLViewerInventoryCategory::cat_array_t cats;
    LLViewerInventoryItem::item_array_t items;

    LLUUID itemID;
    NameCollectFunctor namefunctor(obj_name);

    gInventory.collectDescendentsIf(catID, cats, items, false, namefunctor);

    for (const auto& item : items)
    {
        if (!item->getIsLinkType() && (item->getType() == LLAssetType::AT_OBJECT))
        {
            itemID = item->getUUID();
            break;
        }
    }

    if (itemID.notNull())
    {
        LLViewerInventoryItem* item = gInventory.getItem(itemID);
        return item;
    }
    return nullptr;
}

void FSLSLBridge::cleanUpBridgeFolder(const std::string& nameToCleanUp)
{
    //LL_INFOS("FSLSLBridge") << "Cleaning leftover scripts and bridges for folder " << nameToCleanUp << LL_ENDL;

    if (!isBridgeValid())
    {
        LL_WARNS("FSLSLBridge") << "Bridge no valid" << LL_ENDL;
        return;
    }

    LLUUID catID = getBridgeFolder();
    LLViewerInventoryCategory::cat_array_t cats;
    LLViewerInventoryItem::item_array_t items;

    //find all bridge and script duplicates and delete them
    //NameCollectFunctor namefunctor(mCurrentFullName);
    NameCollectFunctor namefunctor(nameToCleanUp);
    gInventory.collectDescendentsIf(catID, cats, items, false, namefunctor);

    for (const auto& item : items)
    {
        if (!item->getIsLinkType() && (item->getUUID() != mpBridge->getUUID()))
        {
            LL_INFOS("FSLSLBridge") << "Bridge folder cleanup: Deleting " << item->getName() << " (" << item->getUUID() << ")" << LL_ENDL;
            remove_inventory_item(item->getUUID(), nullptr, true);
        }
    }

    gInventory.notifyObservers();
}

void FSLSLBridge::cleanUpBridgeFolder()
{
    cleanUpBridgeFolder(mCurrentFullName);
}

void FSLSLBridge::cleanUpOldVersions()
{
    std::string mProcessingName;

    for (S32 i = 1; i <= FS_BRIDGE_MAJOR_VERSION; i++)
    {
        S32 minor_tip;
        if (i < FS_BRIDGE_MAJOR_VERSION)
        {
            minor_tip = FS_MAX_MINOR_VERSION;
        }
        else
        {
            minor_tip = FS_BRIDGE_MINOR_VERSION;
        }

        for (S32 j = 0; j < minor_tip; j++)
        {
            mProcessingName = llformat("%s%d.%d", FS_BRIDGE_NAME.c_str(), i, j);
            cleanUpBridgeFolder(mProcessingName);
        }
    }
}

void FSLSLBridge::detachOtherBridges()
{
    LLUUID catID = getBridgeFolder();
    LLViewerInventoryCategory::cat_array_t cats;
    LLViewerInventoryItem::item_array_t items;

    LLViewerInventoryItem* fsBridge = findInvObject(mCurrentFullName, catID);

    //detach everything except current valid bridge - if any
    gInventory.collectDescendents(catID, cats, items, false);

    for (const auto& item : items)
    {
        if (get_is_item_worn(item->getUUID()) &&
            ((!fsBridge) || (item->getUUID() != fsBridge->getUUID())))
        {
            LLVOAvatarSelf::detachAttachmentIntoInventory(item->getUUID());
        }
    }
}

bool FSLSLBridgeCleanupTimer::tick()
{
    FSLSLBridge::instance().setTimerResult(FSLSLBridge::CLEANUP_FINISHED);
    return true;
}

bool FSLSLBridgeReAttachTimer::tick()
{
    LL_INFOS("FSLSLBridge") << "Re-attaching bridge after creation..." << LL_ENDL;
    FSLSLBridge::instance().setTimerResult(FSLSLBridge::REATTACH_FINISHED);
    return true;
}

bool FSLSLBridgeStartCreationTimer::tick()
{
    FSLSLBridge::instance().setTimerResult(FSLSLBridge::START_CREATION_FINISHED);
    return true;
}