/*

 * Copyright (c) 2021 Huawei Device Co., Ltd.

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */



#include "applypatch/command_function.h"

#include "command_process.h"



namespace Updater {

extern "C" __attribute__((constructor)) void RegistBlockUpdateCommandFunction(void)

{

    const std::unordered_map<std::string, std::function<std::unique_ptr<CommandFunction>()>> COMMANDFUNC = {

        { "abort", []() { return std::make_unique<AbortCommandFn>(); } },

        { "bsdiff", []() { return std::make_unique<DiffAndMoveCommandFn>(); } },

        { "new", []() { return std::make_unique<NewCommandFn>(); } },

        { "pkgdiff", []() { return std::make_unique<DiffAndMoveCommandFn>(); } },

        { "zero", []() { return std::make_unique<ZeroAndEraseCommandFn>(); } },

        { "erase", []() { return std::make_unique<ZeroAndEraseCommandFn>(); } },

        { "free", []() { return std::make_unique<FreeCommandFn>(); } },

        { "move", []() { return std::make_unique<DiffAndMoveCommandFn>(); } },

        { "stash", []() { return std::make_unique<StashCommandFn>(); } },

        { "copy", []() { return std::make_unique<DiffAndMoveCommandFn>(); } }

    };

    for (auto &iter : COMMANDFUNC) {

        CommandFunctionFactory::GetInstance().RegistCommandFunction(iter.first, iter.second());

    }

}



CommandFunctionFactory &CommandFunctionFactory::GetInstance()

{

    static CommandFunctionFactory instance;

    return instance;

}



CommandFunction* CommandFunctionFactory::GetCommandFunction(std::string command)

{

    auto iter = commandFunctionMap_.find(command);

    if (iter != commandFunctionMap_.end()) {

        return iter->second.get();

    }

    return nullptr;

}



void CommandFunctionFactory::RegistCommandFunction(std::string command,

                                                   std::unique_ptr<CommandFunction> commandFunction)

{

    commandFunctionMap_.emplace(command, std::move(commandFunction));

}

}