/**
 * @file llfloaterdisplayname.cpp
 * @author Leyla Farazha
 * @brief Implementation of the LLFloaterDisplayName class.
 *
 * $LicenseInfo:firstyear=2002&license=viewerlgpl$
 * 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 "llfloaterreg.h"
#include "llfloater.h"

#include "llnotificationsutil.h"
#include "llviewerdisplayname.h"

#include "llnotifications.h"
#include "llfloaterdisplayname.h"
#include "llavatarnamecache.h"

#include "llagent.h"


class LLFloaterDisplayName : public LLFloater
{
public:
    LLFloaterDisplayName(const LLSD& key);
    virtual ~LLFloaterDisplayName() { }
    /*virtual*/ bool    postBuild();
    void onSave();
    void onReset();
    void onCancel();
    /*virtual*/ void onOpen(const LLSD& key);

private:

    void onCacheSetName(bool success,
                                          const std::string& reason,
                                          const LLSD& content);
};

LLFloaterDisplayName::LLFloaterDisplayName(const LLSD& key) :
    LLFloater(key)
{
}

void LLFloaterDisplayName::onOpen(const LLSD& key)
{
    getChild<LLUICtrl>("display_name_editor")->clear();
    getChild<LLUICtrl>("display_name_confirm")->clear();

    LLAvatarName av_name;
    LLAvatarNameCache::get(gAgent.getID(), &av_name);

    F64 now_secs = LLDate::now().secondsSinceEpoch();

    if (now_secs < av_name.mNextUpdate)
    {
        // ...can't update until some time in the future
        F64 next_update_local_secs =
            av_name.mNextUpdate - LLStringOps::getLocalTimeOffset();
        LLDate next_update_local(next_update_local_secs);
        // display as "July 18 12:17 PM"
        std::string next_update_string =
        next_update_local.toHTTPDateString("%B %d %I:%M %p");
        getChild<LLUICtrl>("lockout_text")->setTextArg("[TIME]", next_update_string);
        getChild<LLUICtrl>("lockout_text")->setVisible(true);
        getChild<LLUICtrl>("save_btn")->setEnabled(false);
        getChild<LLUICtrl>("display_name_editor")->setEnabled(false);
        getChild<LLUICtrl>("display_name_confirm")->setEnabled(false);
        getChild<LLUICtrl>("cancel_btn")->setFocus(true);

    }
    else
    {
        getChild<LLUICtrl>("lockout_text")->setVisible(false);
        getChild<LLUICtrl>("save_btn")->setEnabled(true);
        getChild<LLUICtrl>("display_name_editor")->setEnabled(true);
        getChild<LLUICtrl>("display_name_confirm")->setEnabled(true);

    }
}

bool LLFloaterDisplayName::postBuild()
{
    getChild<LLUICtrl>("reset_btn")->setCommitCallback(boost::bind(&LLFloaterDisplayName::onReset, this));
    getChild<LLUICtrl>("cancel_btn")->setCommitCallback(boost::bind(&LLFloaterDisplayName::onCancel, this));
    getChild<LLUICtrl>("save_btn")->setCommitCallback(boost::bind(&LLFloaterDisplayName::onSave, this));

    center();

    return true;
}

void LLFloaterDisplayName::onCacheSetName(bool success,
                                          const std::string& reason,
                                          const LLSD& content)
{
    if (success)
    {
        // Inform the user that the change took place, but will take a while
        // to percolate.
        LLSD args;
        args["DISPLAY_NAME"] = content["display_name"];
        LLNotificationsUtil::add("SetDisplayNameSuccess", args);
        return;
    }

    // Request failed, notify the user
    std::string error_tag = content["error_tag"].asString();
    LL_INFOS() << "set name failure error_tag " << error_tag << LL_ENDL;

    // We might have a localized string for this message
    // error_args will usually be empty from the server.
    if (!error_tag.empty()
        && LLNotifications::getInstance()->templateExists(error_tag))
    {
        LLNotificationsUtil::add(error_tag);
        return;
    }

    // The server error might have a localized message for us
    std::string lang_code = LLUI::getLanguage();
    LLSD error_desc = content["error_description"];
    if (error_desc.has( lang_code ))
    {
        LLSD args;
        args["MESSAGE"] = error_desc[lang_code].asString();
        LLNotificationsUtil::add("GenericAlert", args);
        return;
    }

    // No specific error, throw a generic one
    LLNotificationsUtil::add("SetDisplayNameFailedGeneric");
}

void LLFloaterDisplayName::onCancel()
{
    setVisible(false);
}

void LLFloaterDisplayName::onReset()
{
    LLAvatarName av_name;
    if (!LLAvatarNameCache::get(gAgent.getID(), &av_name))
    {
        return;
    }
    getChild<LLUICtrl>("display_name_editor")->setValue(av_name.getUserName());

    if (getChild<LLUICtrl>("display_name_editor")->getEnabled())
    {
        // UI is enabled, fill the first field
        getChild<LLUICtrl>("display_name_confirm")->clear();
        getChild<LLUICtrl>("display_name_confirm")->setFocus(true);
    }
    else
    {
        // UI is disabled, looks like we should allow resetting
        // even if user already set a display name, enable save button
        getChild<LLUICtrl>("display_name_confirm")->setValue(av_name.getUserName());
        getChild<LLUICtrl>("save_btn")->setEnabled(true);
    }
}


void LLFloaterDisplayName::onSave()
{
    std::string display_name_utf8 = getChild<LLUICtrl>("display_name_editor")->getValue().asString();
    std::string display_name_confirm = getChild<LLUICtrl>("display_name_confirm")->getValue().asString();

    if (display_name_utf8.compare(display_name_confirm))
    {
        LLNotificationsUtil::add("SetDisplayNameMismatch");
        return;
    }

    LLAvatarName av_name;
    if (!LLAvatarNameCache::get(gAgent.getID(), &av_name))
    {
        return;
    }

    std::string user_name = av_name.getUserName();
    if (display_name_utf8.compare(user_name) == 0
        && LLAvatarNameCache::getInstance()->hasNameLookupURL())
    {
        // A reset
        LLViewerDisplayName::set("", boost::bind(&LLFloaterDisplayName::onCacheSetName, this, _1, _2, _3));
        return;
    }

    const U32 DISPLAY_NAME_MAX_LENGTH = 31; // characters, not bytes
    LLWString display_name_wstr = utf8string_to_wstring(display_name_utf8);
    if (display_name_wstr.size() > DISPLAY_NAME_MAX_LENGTH)
    {
        LLSD args;
        args["LENGTH"] = llformat("%d", DISPLAY_NAME_MAX_LENGTH);
        LLNotificationsUtil::add("SetDisplayNameFailedLength", args);
        return;
    }

    if (LLAvatarNameCache::getInstance()->hasNameLookupURL())
    {
        LLViewerDisplayName::set(display_name_utf8,boost::bind(&LLFloaterDisplayName::onCacheSetName, this, _1, _2, _3));
    }
    else
    {
        LLNotificationsUtil::add("SetDisplayNameFailedGeneric");
    }

    setVisible(false);
}


//////////////////////////////////////////////////////////////////////////////
// LLInspectObjectUtil
//////////////////////////////////////////////////////////////////////////////
void LLFloaterDisplayNameUtil::registerFloater()
{
    LLFloaterReg::add("display_name", "floater_display_name.xml",
                      &LLFloaterReg::build<LLFloaterDisplayName>);
}