/**
 * @file llpanelwearing.cpp
 * @brief List of agent's worn items.
 *
 * $LicenseInfo:firstyear=2010&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, 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
 *
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#include "llviewerprecompiledheaders.h"

#include "llpanelwearing.h"

#include "lltoggleablemenu.h"

#include "llagent.h"
#include "llaccordionctrl.h"
#include "llaccordionctrltab.h"
#include "llappearancemgr.h"
#include "llfloatersidepanelcontainer.h"
#include "llinventoryfunctions.h"
#include "llinventoryicon.h"
#include "llinventorymodel.h"
#include "llinventoryobserver.h"
#include "llmenubutton.h"
#include "lloutfitobserver.h"
#include "llscrolllistctrl.h"
#include "llviewermenu.h"
#include "llviewerregion.h"
#include "llwearableitemslist.h"
#include "llsdserialize.h"
#include "llclipboard.h"

// Context menu and Gear menu helper.
static void edit_outfit()
{
    LLFloaterSidePanelContainer::showPanel("appearance", LLSD().with("type", "edit_outfit"));
}

//////////////////////////////////////////////////////////////////////////

class LLWearingGearMenu
{
public:
    LLWearingGearMenu(LLPanelWearing* panel_wearing)
    :   mMenu(NULL), mPanelWearing(panel_wearing)
    {
        LLUICtrl::CommitCallbackRegistry::ScopedRegistrar registrar;
        LLUICtrl::EnableCallbackRegistry::ScopedRegistrar enable_registrar;

        registrar.add("Gear.TouchAttach", boost::bind(&LLWearingGearMenu::handleMultiple, this, handle_attachment_touch));
        registrar.add("Gear.EditItem", boost::bind(&LLWearingGearMenu::handleMultiple, this, handle_item_edit));
        registrar.add("Gear.EditOutfit", boost::bind(&edit_outfit));
        registrar.add("Gear.TakeOff", boost::bind(&LLPanelWearing::onRemoveItem, mPanelWearing));
        registrar.add("Gear.Copy", boost::bind(&LLPanelWearing::copyToClipboard, mPanelWearing));

        enable_registrar.add("Gear.OnEnable", boost::bind(&LLPanelWearing::isActionEnabled, mPanelWearing, _2));

        mMenu = LLUICtrlFactory::getInstance()->createFromFile<LLToggleableMenu>(
            "menu_wearing_gear.xml", gMenuHolder, LLViewerMenuHolderGL::child_registry_t::instance());
        llassert(mMenu);
    }

    LLToggleableMenu* getMenu() { return mMenu; }

private:
    void handleMultiple(std::function<void(const LLUUID& id)> functor)
    {
        uuid_vec_t selected_item_ids;
        mPanelWearing->getSelectedItemsUUIDs(selected_item_ids);

        for (const LLUUID& item_id : selected_item_ids)
        {
            functor(item_id);
        }
    }

    LLToggleableMenu*       mMenu;
    LLPanelWearing*         mPanelWearing;
};

//////////////////////////////////////////////////////////////////////////

class LLWearingContextMenu : public LLListContextMenu
{
protected:
    /* virtual */ LLContextMenu* createMenu()
    {
        LLUICtrl::CommitCallbackRegistry::ScopedRegistrar registrar;

        registrar.add("Wearing.TouchAttach", boost::bind(handleMultiple, handle_attachment_touch, mUUIDs));
        registrar.add("Wearing.EditItem", boost::bind(handleMultiple, handle_item_edit, mUUIDs));
        registrar.add("Wearing.EditOutfit", boost::bind(&edit_outfit));
        registrar.add("Wearing.ShowOriginal", boost::bind(show_item_original, mUUIDs.front()));
        registrar.add("Wearing.TakeOff",
                      boost::bind(&LLAppearanceMgr::removeItemsFromAvatar, LLAppearanceMgr::getInstance(), mUUIDs, no_op));
        registrar.add("Wearing.Detach",
                      boost::bind(&LLAppearanceMgr::removeItemsFromAvatar, LLAppearanceMgr::getInstance(), mUUIDs, no_op));
        LLContextMenu* menu = createFromFile("menu_wearing_tab.xml");

        updateMenuItemsVisibility(menu);

        return menu;
    }

    void updateMenuItemsVisibility(LLContextMenu* menu)
    {
        bool bp_selected            = false;    // true if body parts selected
        bool clothes_selected       = false;
        bool attachments_selected   = false;

        // See what types of wearables are selected.
        for (uuid_vec_t::const_iterator it = mUUIDs.begin(); it != mUUIDs.end(); ++it)
        {
            LLViewerInventoryItem* item = gInventory.getItem(*it);

            if (!item)
            {
                LL_WARNS() << "Invalid item" << LL_ENDL;
                continue;
            }

            LLAssetType::EType type = item->getType();
            if (type == LLAssetType::AT_CLOTHING)
            {
                clothes_selected = true;
            }
            else if (type == LLAssetType::AT_BODYPART)
            {
                bp_selected = true;
            }
            else if (type == LLAssetType::AT_OBJECT || type == LLAssetType::AT_GESTURE)
            {
                attachments_selected = true;
            }
        }

        // Enable/disable some menu items depending on the selection.
        bool show_touch = !bp_selected && !clothes_selected && attachments_selected;
        bool show_edit = bp_selected || clothes_selected || attachments_selected;
        bool allow_detach = !bp_selected && !clothes_selected && attachments_selected;
        bool allow_take_off = !bp_selected && clothes_selected && !attachments_selected;

        menu->setItemVisible("touch_attach",       show_touch);
        menu->setItemEnabled("touch_attach",       1 == mUUIDs.size() && enable_attachment_touch(mUUIDs.front()));
        menu->setItemVisible("edit_item",          show_edit);
        menu->setItemEnabled("edit_item",          1 == mUUIDs.size() && get_is_item_editable(mUUIDs.front()));
        menu->setItemVisible("take_off",    allow_take_off);
        menu->setItemVisible("detach",      allow_detach);
        menu->setItemVisible("edit_outfit_separator", show_touch | show_edit | allow_take_off || allow_detach);
        menu->setItemVisible("show_original", mUUIDs.size() == 1);
    }
};

//////////////////////////////////////////////////////////////////////////

class LLTempAttachmentsContextMenu : public LLListContextMenu
{
public:
    LLTempAttachmentsContextMenu(LLPanelWearing* panel_wearing)
        :   mPanelWearing(panel_wearing)
    {}
protected:
    /* virtual */ LLContextMenu* createMenu()
    {
        LLUICtrl::CommitCallbackRegistry::ScopedRegistrar registrar;

        registrar.add("Wearing.EditItem", boost::bind(&LLPanelWearing::onEditAttachment, mPanelWearing));
        registrar.add("Wearing.Detach", boost::bind(&LLPanelWearing::onRemoveAttachment, mPanelWearing));
        LLContextMenu* menu = createFromFile("menu_wearing_tab.xml");

        updateMenuItemsVisibility(menu);

        return menu;
    }

    void updateMenuItemsVisibility(LLContextMenu* menu)
    {
        menu->setItemVisible("touch_attach", true);
        menu->setItemEnabled("touch_attach", 1 == mUUIDs.size());
        menu->setItemVisible("edit_item", true);
        menu->setItemEnabled("edit_item", 1 == mUUIDs.size());
        menu->setItemVisible("take_off", false);
        menu->setItemVisible("detach", true);
        menu->setItemVisible("edit_outfit_separator", false);
        menu->setItemVisible("show_original", false);
        menu->setItemVisible("edit_outfit", false);
    }

    LLPanelWearing*         mPanelWearing;
};

//////////////////////////////////////////////////////////////////////////

static LLPanelInjector<LLPanelWearing> t_panel_wearing("panel_wearing");

LLPanelWearing::LLPanelWearing()
    :   LLPanelAppearanceTab()
    ,   mCOFItemsList(NULL)
    ,   mIsInitialized(false)
    ,   mAttachmentsChangedConnection()
{
    mGearMenu = new LLWearingGearMenu(this);
    mContextMenu = new LLWearingContextMenu();
    mAttachmentsMenu = new LLTempAttachmentsContextMenu(this);
}

LLPanelWearing::~LLPanelWearing()
{
    delete mGearMenu;
    delete mContextMenu;
    delete mAttachmentsMenu;

    if (mAttachmentsChangedConnection.connected())
    {
        mAttachmentsChangedConnection.disconnect();
    }
}

bool LLPanelWearing::postBuild()
{
    mAccordionCtrl = getChild<LLAccordionCtrl>("wearables_accordion");
    mWearablesTab = getChild<LLAccordionCtrlTab>("tab_wearables");
    mWearablesTab->setIgnoreResizeNotification(true);
    mAttachmentsTab = getChild<LLAccordionCtrlTab>("tab_temp_attachments");
    mAttachmentsTab->setDropDownStateChangedCallback(boost::bind(&LLPanelWearing::onAccordionTabStateChanged, this));

    mCOFItemsList = getChild<LLWearableItemsList>("cof_items_list");
    mCOFItemsList->setRightMouseDownCallback(boost::bind(&LLPanelWearing::onWearableItemsListRightClick, this, _1, _2, _3));

    mTempItemsList = getChild<LLScrollListCtrl>("temp_attachments_list");
    mTempItemsList->setFgUnselectedColor(LLColor4::white);
    mTempItemsList->setRightMouseDownCallback(boost::bind(&LLPanelWearing::onTempAttachmentsListRightClick, this, _1, _2, _3));

    LLMenuButton* menu_gear_btn = getChild<LLMenuButton>("options_gear_btn");

    menu_gear_btn->setMenu(mGearMenu->getMenu());

    return true;
}

//virtual
void LLPanelWearing::onOpen(const LLSD& /*info*/)
{
    if (!mIsInitialized)
    {
        // *TODO: I'm not sure is this check necessary but it never match while developing.
        if (!gInventory.isInventoryUsable())
            return;

        const LLUUID cof = gInventory.findCategoryUUIDForType(LLFolderType::FT_CURRENT_OUTFIT);

        // *TODO: I'm not sure is this check necessary but it never match while developing.
        LLViewerInventoryCategory* category = gInventory.getCategory(cof);
        if (!category)
            return;

        // Start observing changes in Current Outfit category.
        LLOutfitObserver::instance().addCOFChangedCallback(boost::bind(&LLWearableItemsList::updateList, mCOFItemsList, cof));

        // Fetch Current Outfit contents and refresh the list to display
        // initially fetched items. If not all items are fetched now
        // the observer will refresh the list as soon as the new items
        // arrive.
        category->fetch();

        mCOFItemsList->updateList(cof);

        mIsInitialized = true;
    }
}

void LLPanelWearing::draw()
{
    if (mUpdateTimer.getStarted() && (mUpdateTimer.getElapsedTimeF32() > 0.1))
    {
        mUpdateTimer.stop();
        updateAttachmentsList();
    }
    LLPanel::draw();
}

void LLPanelWearing::onAccordionTabStateChanged()
{
    if(mAttachmentsTab->isExpanded())
    {
        startUpdateTimer();
        mAttachmentsChangedConnection = LLAppearanceMgr::instance().setAttachmentsChangedCallback(boost::bind(&LLPanelWearing::startUpdateTimer, this));
    }
    else
    {
        if (mAttachmentsChangedConnection.connected())
        {
            mAttachmentsChangedConnection.disconnect();
        }
    }
}

void LLPanelWearing::startUpdateTimer()
{
    if (!mUpdateTimer.getStarted())
    {
        mUpdateTimer.start();
    }
    else
    {
        mUpdateTimer.reset();
    }
}

// virtual
void LLPanelWearing::onFilterSubStringChanged(const std::string& new_string, const std::string& old_string)
{
    mCOFItemsList->setFilterSubString(new_string, true);

    mAccordionCtrl->arrange();
}

// virtual
bool LLPanelWearing::isActionEnabled(const LLSD& userdata)
{
    const std::string command_name = userdata.asString();

    if (command_name == "save_outfit")
    {
        bool outfit_locked = LLAppearanceMgr::getInstance()->isOutfitLocked();
        bool outfit_dirty = LLAppearanceMgr::getInstance()->isOutfitDirty();
        // allow save only if outfit isn't locked and is dirty
        return !outfit_locked && outfit_dirty;
    }

    if (command_name == "take_off")
    {
        if (mWearablesTab->isExpanded())
        {
            return hasItemSelected() && canTakeOffSelected();
        }
        else
        {
            LLScrollListItem* item = mTempItemsList->getFirstSelected();
            if (item && item->getUUID().notNull())
            {
                return true;
            }
        }
    }

    uuid_vec_t selected_uuids;
    getSelectedItemsUUIDs(selected_uuids);

    if (command_name == "touch_attach")
    {
        return (1 == selected_uuids.size()) && (enable_attachment_touch(selected_uuids.front()));
    }
    else if (command_name == "edit_item")
    {
        return (1 == selected_uuids.size()) && (get_is_item_editable(selected_uuids.front()));
    }

    return false;
}

void LLPanelWearing::updateAttachmentsList()
{
    std::vector<LLViewerObject*> attachs = LLAgentWearables::getTempAttachments();
    mTempItemsList->deleteAllItems();
    mAttachmentsMap.clear();
    if(!attachs.empty())
    {
        if(!populateAttachmentsList())
        {
            requestAttachmentDetails();
        }
    }
    else
    {
        std::string no_attachments = getString("no_attachments");
        LLSD row;
        row["columns"][0]["column"] = "text";
        row["columns"][0]["value"] = no_attachments;
        row["columns"][0]["font"] = "SansSerifBold";
        mTempItemsList->addElement(row);
    }
}

bool LLPanelWearing::populateAttachmentsList(bool update)
{
    bool populated = true;
    if(mTempItemsList)
    {
        mTempItemsList->deleteAllItems();
        mAttachmentsMap.clear();
        std::vector<LLViewerObject*> attachs = LLAgentWearables::getTempAttachments();

        std::string icon_name = LLInventoryIcon::getIconName(LLAssetType::AT_OBJECT, LLInventoryType::IT_OBJECT);
        for (std::vector<LLViewerObject*>::iterator iter = attachs.begin();
                iter != attachs.end(); ++iter)
        {
            LLViewerObject *attachment = *iter;
            LLSD row;
            row["id"] = attachment->getID();
            row["columns"][0]["column"] = "icon";
            row["columns"][0]["type"] = "icon";
            row["columns"][0]["value"] = icon_name;
            row["columns"][1]["column"] = "text";
            if(mObjectNames.count(attachment->getID()) && !mObjectNames[attachment->getID()].empty())
            {
                row["columns"][1]["value"] = mObjectNames[attachment->getID()];
            }
            else if(update)
            {
                row["columns"][1]["value"] = attachment->getID();
                populated = false;
            }
            else
            {
                row["columns"][1]["value"] = "Loading...";
                populated = false;
            }
            mTempItemsList->addElement(row);
            mAttachmentsMap[attachment->getID()] = attachment;
        }
    }
    return populated;
}

void LLPanelWearing::requestAttachmentDetails()
{
    LLSD body;
    std::string url = gAgent.getRegionCapability("AttachmentResources");
    if (!url.empty())
    {
        LLCoros::instance().launch("LLPanelWearing::getAttachmentLimitsCoro",
        boost::bind(&LLPanelWearing::getAttachmentLimitsCoro, this, url));
    }
}

void LLPanelWearing::getAttachmentLimitsCoro(std::string url)
{
    LLCore::HttpRequest::policy_t httpPolicy(LLCore::HttpRequest::DEFAULT_POLICY_ID);
    LLCoreHttpUtil::HttpCoroutineAdapter::ptr_t
    httpAdapter(new LLCoreHttpUtil::HttpCoroutineAdapter("getAttachmentLimitsCoro", httpPolicy));
    LLCore::HttpRequest::ptr_t httpRequest(new LLCore::HttpRequest);

    LLSD result = httpAdapter->getAndSuspend(httpRequest, url);

    LLSD httpResults = result[LLCoreHttpUtil::HttpCoroutineAdapter::HTTP_RESULTS];
    LLCore::HttpStatus status = LLCoreHttpUtil::HttpCoroutineAdapter::getStatusFromLLSD(httpResults);

    if (!status)
    {
        LL_WARNS() << "Unable to retrieve attachment limits." << LL_ENDL;
        return;
    }

    result.erase(LLCoreHttpUtil::HttpCoroutineAdapter::HTTP_RESULTS);
    setAttachmentDetails(result);
}


void LLPanelWearing::setAttachmentDetails(LLSD content)
{
    mObjectNames.clear();
    S32 number_attachments = content["attachments"].size();
    for(int i = 0; i < number_attachments; i++)
    {
        S32 number_objects = content["attachments"][i]["objects"].size();
        for(int j = 0; j < number_objects; j++)
        {
            LLUUID task_id = content["attachments"][i]["objects"][j]["id"].asUUID();
            std::string name = content["attachments"][i]["objects"][j]["name"].asString();
            mObjectNames[task_id] = name;
        }
    }
    if(!mObjectNames.empty())
    {
        populateAttachmentsList(true);
    }
}

boost::signals2::connection LLPanelWearing::setSelectionChangeCallback(commit_callback_t cb)
{
    if (!mCOFItemsList) return boost::signals2::connection();

    return mCOFItemsList->setCommitCallback(cb);
}

void LLPanelWearing::onWearableItemsListRightClick(LLUICtrl* ctrl, S32 x, S32 y)
{
    LLWearableItemsList* list = dynamic_cast<LLWearableItemsList*>(ctrl);
    if (!list) return;

    uuid_vec_t selected_uuids;

    list->getSelectedUUIDs(selected_uuids);

    mContextMenu->show(ctrl, selected_uuids, x, y);
}

void LLPanelWearing::onTempAttachmentsListRightClick(LLUICtrl* ctrl, S32 x, S32 y)
{
    LLScrollListCtrl* list = dynamic_cast<LLScrollListCtrl*>(ctrl);
    if (!list) return;
    list->selectItemAt(x, y, MASK_NONE);
    uuid_vec_t selected_uuids;

    if(list->getCurrentID().notNull())
    {
        selected_uuids.push_back(list->getCurrentID());
        mAttachmentsMenu->show(ctrl, selected_uuids, x, y);
    }
}

bool LLPanelWearing::hasItemSelected()
{
    return mCOFItemsList->getSelectedItem() != NULL;
}

void LLPanelWearing::getSelectedItemsUUIDs(uuid_vec_t& selected_uuids) const
{
    mCOFItemsList->getSelectedUUIDs(selected_uuids);
}

void LLPanelWearing::onEditAttachment()
{
    LLScrollListItem* item = mTempItemsList->getFirstSelected();
    if (item)
    {
        LLSelectMgr::getInstance()->deselectAll();
        LLSelectMgr::getInstance()->selectObjectAndFamily(mAttachmentsMap[item->getUUID()]);
        handle_object_edit();
    }
}

void LLPanelWearing::onRemoveAttachment()
{
    LLScrollListItem* item = mTempItemsList->getFirstSelected();
    if (item && item->getUUID().notNull())
    {
        LLSelectMgr::getInstance()->deselectAll();
        LLSelectMgr::getInstance()->selectObjectAndFamily(mAttachmentsMap[item->getUUID()]);
        LLSelectMgr::getInstance()->sendDetach();
    }
}

void LLPanelWearing::onRemoveItem()
{
    if (mWearablesTab->isExpanded())
    {
        uuid_vec_t selected_uuids;
        getSelectedItemsUUIDs(selected_uuids);
        LLAppearanceMgr::instance().removeItemsFromAvatar(selected_uuids);
    }
    else
    {
        onRemoveAttachment();
    }
}


void LLPanelWearing::copyToClipboard()
{
    std::string text;
    std::vector<LLSD> data;
    mCOFItemsList->getValues(data);

    for(std::vector<LLSD>::const_iterator iter = data.begin(); iter != data.end();)
    {
        LLSD uuid = (*iter);
        LLViewerInventoryItem* item = gInventory.getItem(uuid);

        iter++;
        if (item != NULL)
        {
            // Append a newline to all but the last line
            text += iter != data.end() ? item->getName() + "\n" : item->getName();
        }
    }

    LLClipboard::instance().copyToClipboard(utf8str_to_wstring(text),0,text.size());
}
// EOF