/**
 * @file llsidepanelappearance.cpp
 * @brief Side Bar "Appearance" panel
 *
 * $LicenseInfo:firstyear=2009&license=viewerlgpl$
 * 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 "llsidepanelappearance.h"

#include "llaccordionctrltab.h"
#include "llagent.h"
#include "llagentcamera.h"
#include "llagentwearables.h"
#include "llappearancemgr.h"
#include "llfloatersidepanelcontainer.h"
#include "llfolderview.h"
#include "llinventorypanel.h"
#include "llfiltereditor.h"
#include "llfloaterreg.h"
#include "llfloaterworldmap.h"
#include "llfolderviewmodel.h"
#include "llloadingindicator.h"
#include "lloutfitobserver.h"
#include "llpaneleditwearable.h"
#include "llpaneloutfitsinventory.h"
#include "lltextbox.h"
#include "lluictrlfactory.h"
#include "llviewercontrol.h"
#include "llviewerregion.h"
#include "llvoavatarself.h"
#include "llviewerwearable.h"

static LLPanelInjector<LLSidepanelAppearance> t_appearance("sidepanel_appearance");

class LLCurrentlyWornFetchObserver : public LLInventoryFetchItemsObserver
{
public:
    LLCurrentlyWornFetchObserver(const uuid_vec_t &ids,
                                 LLSidepanelAppearance *panel) :
        LLInventoryFetchItemsObserver(ids),
        mPanel(panel)
    {}
    ~LLCurrentlyWornFetchObserver() {}
    virtual void done()
    {
        mPanel->inventoryFetched();
        gInventory.removeObserver(this);
        delete this;
    }
private:
    LLSidepanelAppearance *mPanel;
};

LLSidepanelAppearance::LLSidepanelAppearance() :
    LLPanel(),
    mFilterSubString(LLStringUtil::null),
    mFilterEditor(NULL),
    mOutfitEdit(NULL),
    mCurrOutfitPanel(NULL),
    mOpened(false)
{
    LLOutfitObserver& outfit_observer =  LLOutfitObserver::instance();
    outfit_observer.addBOFReplacedCallback(boost::bind(&LLSidepanelAppearance::refreshCurrentOutfitName, this, ""));
    outfit_observer.addBOFChangedCallback(boost::bind(&LLSidepanelAppearance::refreshCurrentOutfitName, this, ""));
    outfit_observer.addCOFChangedCallback(boost::bind(&LLSidepanelAppearance::refreshCurrentOutfitName, this, ""));

    gAgentWearables.addLoadingStartedCallback(boost::bind(&LLSidepanelAppearance::setWearablesLoading, this, true));
    gAgentWearables.addLoadedCallback(boost::bind(&LLSidepanelAppearance::setWearablesLoading, this, false));
}

LLSidepanelAppearance::~LLSidepanelAppearance()
{
}

// virtual
bool LLSidepanelAppearance::postBuild()
{
    mOpenOutfitBtn = getChild<LLButton>("openoutfit_btn");
    mOpenOutfitBtn->setClickedCallback(boost::bind(&LLSidepanelAppearance::onOpenOutfitButtonClicked, this));

    mEditAppearanceBtn = getChild<LLButton>("editappearance_btn");
    mEditAppearanceBtn->setClickedCallback(boost::bind(&LLSidepanelAppearance::onEditAppearanceButtonClicked, this));

    childSetAction("edit_outfit_btn", boost::bind(&LLSidepanelAppearance::showOutfitEditPanel, this));

    mFilterEditor = getChild<LLFilterEditor>("Filter");
    if (mFilterEditor)
    {
        mFilterEditor->setCommitCallback(boost::bind(&LLSidepanelAppearance::onFilterEdit, this, _2));
    }

    mPanelOutfitsInventory = dynamic_cast<LLPanelOutfitsInventory *>(getChild<LLPanel>("panel_outfits_inventory"));

    mOutfitEdit = dynamic_cast<LLPanelOutfitEdit*>(getChild<LLPanel>("panel_outfit_edit"));
    if (mOutfitEdit)
    {
        LLButton* back_btn = mOutfitEdit->getChild<LLButton>("back_btn");
        if (back_btn)
        {
            back_btn->setClickedCallback(boost::bind(&LLSidepanelAppearance::showOutfitsInventoryPanel, this));
        }

    }

    mEditWearable = dynamic_cast<LLPanelEditWearable*>(getChild<LLPanel>("panel_edit_wearable"));
    if (mEditWearable)
    {
        LLButton* edit_wearable_back_btn = mEditWearable->getChild<LLButton>("back_btn");
        if (edit_wearable_back_btn)
        {
            edit_wearable_back_btn->setClickedCallback(boost::bind(&LLSidepanelAppearance::showOutfitEditPanel, this));
        }
    }

    mCurrentLookName = getChild<LLTextBox>("currentlook_name");

    mOutfitStatus = getChild<LLTextBox>("currentlook_status");

    mCurrOutfitPanel = getChild<LLPanel>("panel_currentlook");

    mWearableLoadingIndicator = getChild<LLLoadingIndicator>("wearables_loading_indicator");
    mEditOutfitBtn = getChild<LLButton>("edit_outfit_btn");

    setVisibleCallback(boost::bind(&LLSidepanelAppearance::onVisibilityChanged,this,_2));

    setWearablesLoading(gAgentWearables.isCOFChangeInProgress());

    return true;
}

// virtual
void LLSidepanelAppearance::onOpen(const LLSD& key)
{
    if (!key.has("type"))
    {
        // No specific panel requested.
        // If we're opened for the first time then show My Outfits.
        // Else do nothing.
        if (!mOpened)
        {
            showOutfitsInventoryPanel();
        }
    }
    else
    {
        // Switch to the requested panel.
        std::string type = key["type"].asString();
        if (type == "my_outfits")
        {
            showOutfitsInventoryPanel("outfitslist_tab");
        }
        else if (type == "now_wearing")
        {
            showOutfitsInventoryPanel("cof_tab");
        }
        else if (type == "edit_outfit")
        {
            showOutfitEditPanel();
        }
        else if (type == "edit_shape")
        {
            showWearableEditPanel();
        }
    }

    mOpened = true;
}

void LLSidepanelAppearance::onVisibilityChanged(const LLSD &new_visibility)
{
    LLSD visibility;
    visibility["visible"] = new_visibility.asBoolean();
    visibility["reset_accordion"] = false;
    updateToVisibility(visibility);
}

void LLSidepanelAppearance::updateToVisibility(const LLSD &new_visibility)
{
    if (new_visibility["visible"].asBoolean())
    {
        const bool is_outfit_edit_visible = mOutfitEdit && mOutfitEdit->getVisible();
        const bool is_wearable_edit_visible = mEditWearable && mEditWearable->getVisible();

        if (is_outfit_edit_visible || is_wearable_edit_visible)
        {
            const LLViewerWearable *wearable_ptr = mEditWearable ? mEditWearable->getWearable() : NULL;
            if (!wearable_ptr)
            {
                LL_WARNS() << "Visibility change to invalid wearable" << LL_ENDL;
                return;
            }
            // Disable camera switch is currently just for WT_PHYSICS type since we don't want to freeze the avatar
            // when editing its physics.
            if (!gAgentCamera.cameraCustomizeAvatar())
            {
                LLVOAvatarSelf::onCustomizeStart(LLWearableType::getInstance()->getDisableCameraSwitch(wearable_ptr->getType()));
            }
            if (is_wearable_edit_visible)
            {
                U32 index;
                if (!gAgentWearables.getWearableIndex(wearable_ptr,index))
                {
                    // we're no longer wearing the wearable we were last editing, switch back to outfit editor
                    showOutfitEditPanel();
                }
            }

            if (is_outfit_edit_visible && new_visibility["reset_accordion"].asBoolean())
            {
                mOutfitEdit->resetAccordionState();
            }
        }
    }
    else
    {
        if (gAgentCamera.cameraCustomizeAvatar() && gSavedSettings.getBOOL("AppearanceCameraMovement"))
        {
            gAgentCamera.changeCameraToDefault();
            gAgentCamera.resetView();
        }
    }
}

void LLSidepanelAppearance::onFilterEdit(const std::string& search_string)
{
    if (mFilterSubString != search_string)
    {
        mFilterSubString = search_string;

        // Searches are case-insensitive
        // but we don't convert the typed string to upper-case so that it can be fed to the web search as-is.

        mPanelOutfitsInventory->onSearchEdit(mFilterSubString);
    }
}

void LLSidepanelAppearance::onOpenOutfitButtonClicked()
{
    const LLViewerInventoryItem *outfit_link = LLAppearanceMgr::getInstance()->getBaseOutfitLink();
    if (!outfit_link)
        return;
    if (!outfit_link->getIsLinkType())
        return;

    LLAccordionCtrlTab* tab_outfits = mPanelOutfitsInventory->findChild<LLAccordionCtrlTab>("tab_outfits");
    if (tab_outfits)
    {
        tab_outfits->changeOpenClose(false);
        LLInventoryPanel *inventory_panel = tab_outfits->findChild<LLInventoryPanel>("outfitslist_tab");
        if (inventory_panel)
        {
            LLFolderView* root = inventory_panel->getRootFolder();
            LLFolderViewItem *outfit_folder =    inventory_panel->getItemByID(outfit_link->getLinkedUUID());
            if (outfit_folder)
            {
                outfit_folder->setOpen(!outfit_folder->isOpen());
                root->setSelection(outfit_folder,true);
                root->scrollToShowSelection();
            }
        }
    }
}

// *TODO: obsolete?
void LLSidepanelAppearance::onEditAppearanceButtonClicked()
{
    if (gAgentWearables.areWearablesLoaded())
    {
        LLVOAvatarSelf::onCustomizeStart();
    }
}

void LLSidepanelAppearance::showOutfitsInventoryPanel()
{
    toggleWearableEditPanel(false);
    toggleOutfitEditPanel(false);
    toggleMyOutfitsPanel(true, "");
}

void LLSidepanelAppearance::showOutfitsInventoryPanel(const std::string &tab_name)
{
    toggleWearableEditPanel(false);
    toggleOutfitEditPanel(false);
    toggleMyOutfitsPanel(true, tab_name);
}

void LLSidepanelAppearance::showOutfitEditPanel()
{
    if (mOutfitEdit && mOutfitEdit->getVisible()) return;

    // Accordion's state must be reset in all cases except the one when user
    // is returning back to the mOutfitEdit panel from the mEditWearable panel.
    // The simplest way to control this is to check the visibility state of the mEditWearable
    // BEFORE it is changed by the call to the toggleWearableEditPanel(false, NULL, true).
    if (mEditWearable != NULL && !mEditWearable->getVisible() && mOutfitEdit != NULL)
    {
        mOutfitEdit->resetAccordionState();
    }

    // If we're exiting the edit wearable view, and the camera was not focused on the avatar
    // (e.g. such as if we were editing a physics param), then skip the outfits edit mode since
    // otherwise this would trigger the camera focus mode.
    if (mEditWearable != NULL && mEditWearable->getVisible() && !gAgentCamera.cameraCustomizeAvatar())
    {
        showOutfitsInventoryPanel();
        return;
    }

    toggleMyOutfitsPanel(false, "");
    toggleWearableEditPanel(false, NULL, true); // don't switch out of edit appearance mode
    toggleOutfitEditPanel(true);
}

void LLSidepanelAppearance::showWearableEditPanel(LLViewerWearable *wearable /* = NULL*/, bool disable_camera_switch)
{
    toggleMyOutfitsPanel(false, "");
    toggleOutfitEditPanel(false, true); // don't switch out of edit appearance mode
    toggleWearableEditPanel(true, wearable, disable_camera_switch);
}

void LLSidepanelAppearance::toggleMyOutfitsPanel(bool visible, const std::string& tab_name)
{
    if (!mPanelOutfitsInventory
        || (mPanelOutfitsInventory->getVisible() == visible && tab_name.empty()))
    {
        // visibility isn't changing, hence nothing to do
        return;
    }

    mPanelOutfitsInventory->setVisible(visible);

    // *TODO: Move these controls to panel_outfits_inventory.xml
    // so that we don't need to toggle them explicitly.
    mFilterEditor->setVisible(visible);
    mCurrOutfitPanel->setVisible(visible);

    if (visible)
    {
        mPanelOutfitsInventory->onOpen(LLSD());
        if (!tab_name.empty())
        {
            mPanelOutfitsInventory->openApearanceTab(tab_name);
        }
    }
}

bool LLSidepanelAppearance::isCOFPanelVisible()
{
    if (mPanelOutfitsInventory && mPanelOutfitsInventory->getVisible())
    {
        return mPanelOutfitsInventory->isCOFPanelActive();
    }
    return false;
}

void LLSidepanelAppearance::toggleOutfitEditPanel(bool visible, bool disable_camera_switch)
{
    if (!mOutfitEdit || mOutfitEdit->getVisible() == visible)
    {
        // visibility isn't changing, hence nothing to do
        return;
    }

    mOutfitEdit->setVisible(visible);

    if (visible)
    {
        mOutfitEdit->onOpen(LLSD());
        LLVOAvatarSelf::onCustomizeStart(disable_camera_switch);
    }
    else
    {
        if (!disable_camera_switch)   // if we're just switching between outfit and wearable editing, don't end customization.
        {
            LLVOAvatarSelf::onCustomizeEnd(disable_camera_switch);
            LLAppearanceMgr::getInstance()->updateIsDirty();
        }
    }
}

void LLSidepanelAppearance::toggleWearableEditPanel(bool visible, LLViewerWearable *wearable, bool disable_camera_switch)
{
    if (!mEditWearable)
    {
        return;
    }

    if (mEditWearable->getVisible() == visible && (!visible || mEditWearable->getWearable() == wearable))
    {
        // visibility isn't changing and panel doesn't need an update, hence nothing to do
        return;
    }

    // If we're just switching between outfit and wearable editing or updating item,
    // don't end customization and don't switch camera
    // Don't end customization and don't switch camera without visibility change
    bool change_state = !disable_camera_switch && mEditWearable->getVisible() != visible;

    if (!wearable)
    {
        wearable = gAgentWearables.getViewerWearable(LLWearableType::WT_SHAPE, 0);
    }
    if (!wearable)
    {
        return;
    }

    // Toggle panel visibility.
    mEditWearable->setVisible(visible);

    if (visible)
    {
        LLVOAvatarSelf::onCustomizeStart(!change_state);
        mEditWearable->setWearable(wearable, !change_state);
        mEditWearable->onOpen(LLSD()); // currently no-op, just for consistency
    }
    else
    {
        // Save changes if closing.
        mEditWearable->saveChanges();
        mEditWearable->setWearable(NULL);
        LLAppearanceMgr::getInstance()->updateIsDirty();
        if (change_state)
        {
            LLVOAvatarSelf::onCustomizeEnd(!change_state);
        }
    }
}

void LLSidepanelAppearance::refreshCurrentOutfitName(const std::string& name)
{
    // Set current outfit status (wearing/unsaved).
    bool dirty = LLAppearanceMgr::getInstance()->isOutfitDirty();
    std::string cof_status_str = getString(dirty ? "Unsaved Changes" : "Now Wearing");
    mOutfitStatus->setText(cof_status_str);

    if (name == "")
    {
        std::string outfit_name;
        if (LLAppearanceMgr::getInstance()->getBaseOutfitName(outfit_name))
        {
                mCurrentLookName->setText(outfit_name);
                return;
        }

        std::string string_name = gAgentWearables.isCOFChangeInProgress() ? "Changing outfits" : "No Outfit";
        mCurrentLookName->setText(getString(string_name));
        mOpenOutfitBtn->setEnabled(false);
    }
    else
    {
        mCurrentLookName->setText(name);
        // Can't just call update verbs since the folder link may not have been created yet.
        mOpenOutfitBtn->setEnabled(true);
    }
}

//static
void LLSidepanelAppearance::editWearable(LLViewerWearable *wearable, LLView *data, bool disable_camera_switch)
{
    LLFloaterSidePanelContainer::showPanel("appearance", LLSD());
    LLSidepanelAppearance *panel = dynamic_cast<LLSidepanelAppearance*>(data);
    if (panel)
    {
        panel->showWearableEditPanel(wearable, disable_camera_switch);
    }
}

// Fetch currently worn items and only enable the New Look button after everything's been
// fetched.  Alternatively, we could stuff this logic into llagentwearables::makeNewOutfitLinks.
void LLSidepanelAppearance::fetchInventory()
{
    uuid_vec_t ids;
    LLUUID item_id;
    for(S32 type = (S32)LLWearableType::WT_SHAPE; type < (S32)LLWearableType::WT_COUNT; ++type)
    {
        for (U32 index = 0; index < gAgentWearables.getWearableCount((LLWearableType::EType)type); ++index)
        {
            item_id = gAgentWearables.getWearableItemID((LLWearableType::EType)type, index);
            if(item_id.notNull())
            {
                ids.push_back(item_id);
            }
        }
    }

    if (isAgentAvatarValid())
    {
        for (LLVOAvatar::attachment_map_t::const_iterator iter = gAgentAvatarp->mAttachmentPoints.begin();
             iter != gAgentAvatarp->mAttachmentPoints.end(); ++iter)
        {
            LLViewerJointAttachment* attachment = iter->second;
            if (!attachment) continue;
            for (LLViewerJointAttachment::attachedobjs_vec_t::iterator attachment_iter = attachment->mAttachedObjects.begin();
                 attachment_iter != attachment->mAttachedObjects.end();
                 ++attachment_iter)
            {
                LLViewerObject* attached_object = attachment_iter->get();
                if (!attached_object) continue;
                const LLUUID& item_id = attached_object->getAttachmentItemID();
                if (item_id.isNull()) continue;
                ids.push_back(item_id);
            }
        }
    }

    LLCurrentlyWornFetchObserver *fetch_worn = new LLCurrentlyWornFetchObserver(ids, this);
    fetch_worn->startFetch();
    // If no items to be fetched, done will never be triggered.
    // TODO: Change LLInventoryFetchItemsObserver::fetchItems to trigger done() on this condition.
    if (fetch_worn->isFinished())
    {
        fetch_worn->done();
    }
    else
    {
        gInventory.addObserver(fetch_worn);
    }
}

void LLSidepanelAppearance::inventoryFetched()
{
}

void LLSidepanelAppearance::setWearablesLoading(bool val)
{
    mWearableLoadingIndicator->setVisible(val);
    mEditOutfitBtn->setVisible(!val);

    if (!val)
    {
        // refresh outfit name when COF is already changed.
        refreshCurrentOutfitName();
    }
}

void LLSidepanelAppearance::showDefaultSubpart()
{
    if (mEditWearable->getVisible())
    {
        mEditWearable->showDefaultSubpart();
    }
}

void LLSidepanelAppearance::updateScrollingPanelList()
{
    if (mEditWearable->getVisible())
    {
        mEditWearable->updateScrollingPanelList();
    }
}