/**
 * @file llcommandmanager.cpp
 * @brief LLCommandManager class
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2011, 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
 * $/LicenseInfo$
 */

// A control that displays the name of the chosen item, which when
// clicked shows a scrolling box of options.

#include "linden_common.h"

#include "llcommandmanager.h"
#include "lldir.h"
#include "llerror.h"
#include "llsdutil.h"
#include "llxuiparser.h"


//
// LLCommandId class
//

const LLCommandId LLCommandId::null = LLCommandId("null command");

//
// LLCommand class
//

LLCommand::Params::Params()
    : available_in_toybox("available_in_toybox", false)
    , icon("icon")
    , label_ref("label_ref")
    , name("name")
    , tooltip_ref("tooltip_ref")
    , execute_function("execute_function")
    , execute_parameters("execute_parameters")
    , execute_stop_function("execute_stop_function")
    , execute_stop_parameters("execute_stop_parameters")
    , is_enabled_function("is_enabled_function")
    , is_enabled_parameters("is_enabled_parameters")
    , is_running_function("is_running_function")
    , is_running_parameters("is_running_parameters")
    , is_starting_function("is_starting_function")
    , is_starting_parameters("is_starting_parameters")
    , is_flashing_allowed("is_flashing_allowed", false)
{
}

LLCommand::LLCommand(const LLCommand::Params& p)
    : mIdentifier(p.name)
    , mAvailableInToybox(p.available_in_toybox)
    , mIcon(p.icon)
    , mLabelRef(p.label_ref)
    , mName(p.name)
    , mTooltipRef(p.tooltip_ref)
    , mExecuteFunction(p.execute_function)
    , mExecuteParameters(p.execute_parameters)
    , mExecuteStopFunction(p.execute_stop_function)
    , mExecuteStopParameters(p.execute_stop_parameters)
    , mIsEnabledFunction(p.is_enabled_function)
    , mIsEnabledParameters(p.is_enabled_parameters)
    , mIsRunningFunction(p.is_running_function)
    , mIsRunningParameters(p.is_running_parameters)
    , mIsStartingFunction(p.is_starting_function)
    , mIsStartingParameters(p.is_starting_parameters)
    , mIsFlashingAllowed(p.is_flashing_allowed)
{
}


//
// LLCommandManager class
//

LLCommandManager::LLCommandManager()
{
}

LLCommandManager::~LLCommandManager()
{
    for (CommandVector::iterator cmdIt = mCommands.begin(); cmdIt != mCommands.end(); ++cmdIt)
    {
        LLCommand * command = *cmdIt;

        delete command;
    }
}

U32 LLCommandManager::commandCount() const
{
    return static_cast<U32>(mCommands.size());
}

LLCommand * LLCommandManager::getCommand(U32 commandIndex)
{
    return mCommands[commandIndex];
}

LLCommand * LLCommandManager::getCommand(const LLCommandId& commandId)
{
    LLCommand * command_match = NULL;

    CommandIndexMap::const_iterator found = mCommandIndices.find(commandId.uuid());

    if (found != mCommandIndices.end())
    {
        command_match = mCommands[found->second];
    }

    return command_match;
}

LLCommand * LLCommandManager::getCommand(const std::string& name)
{
    LLCommand * command_match = NULL;

    CommandVector::const_iterator it = mCommands.begin();

    while (it != mCommands.end())
    {
        if ((*it)->name() == name)
        {
            command_match = *it;
            break;
        }
        it++;
    }

    return command_match;
}

void LLCommandManager::addCommand(LLCommand * command)
{
    LLCommandId command_id = command->id();
    mCommandIndices[command_id.uuid()] = mCommands.size();
    mCommands.push_back(command);

    LL_DEBUGS() << "Successfully added command: " << command->name() << LL_ENDL;
}

//static
bool LLCommandManager::load()
{
    LLCommandManager& mgr = LLCommandManager::instance();

    std::string commands_file = gDirUtilp->getExpandedFilename(LL_PATH_APP_SETTINGS, "commands.xml");

    LLCommandManager::Params commandsParams;

    LLSimpleXUIParser parser;

    if (!parser.readXUI(commands_file, commandsParams))
    {
        LL_ERRS() << "Unable to load xml file: " << commands_file << LL_ENDL;
        return false;
    }

    if (!commandsParams.validateBlock())
    {
        LL_ERRS() << "Invalid commands file: " << commands_file << LL_ENDL;
        return false;
    }

    for (const LLCommand::Params& commandParams : commandsParams.commands)
    {
        LLCommand * command = new LLCommand(commandParams);

        mgr.addCommand(command);
    }

    return true;
}

LLSD LLCommandManager::getCommandNames()
{
    return llsd::toArray(mCommands, [](const auto &cmd) { return cmd->name(); });
 }