/*
 * Copyright (c) 2021-2022 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.
 */
#ifndef HIPERF_SUBCOMMAND_H_
#define HIPERF_SUBCOMMAND_H_
#include <string>

#include "command_reporter.h"
#include "utilities.h"
#include "virtual_runtime.h"

namespace OHOS {
namespace Developtools {
namespace HiPerf {
class SubCommand {
public:
    SubCommand(const std::string &name, const std::string &brief, const std::string &help)
        : name_(name), brief_(brief), help_(help)
    {
    }

    virtual ~SubCommand() {}

    const std::string &Name() const
    {
        return name_;
    }
    const std::string &Brief() const
    {
        return brief_;
    }
    const std::string &Help() const
    {
        return help_;
    }

    // parse option first
    bool OnSubCommandOptions(std::vector<std::string> args);

    // some help cmd
    bool OnPreSubCommand()
    {
        if (showHelp_) {
            printf("%s\n", Help().c_str());
            return true;
        }
        return false;
    };

    virtual void DumpOptions() const {}

    // args should be empty after all the args processed
    virtual bool ParseOption(std::vector<std::string> &args)
    {
        args.clear(); // all the args is processed
        return true;
    }

    // add args for hisysevent
    virtual void AddReportArgs(CommandReporter& reporter) {};

    // return NO_ERROR means cmd success
    virtual HiperfError OnSubCommand(std::vector<std::string>& args) = 0;
    // some test code will use this for simple
    bool OnSubCommand(std::string stringArgs)
    {
        auto args = StringSplit(stringArgs, " ");
        return OnSubCommand(args) != HiperfError::NO_ERR;
    };

    // get some cmd
    static bool RegisterSubCommand(const std::string& cmdName, std::function<SubCommand&()> func);
    static const std::map<std::string, std::function<SubCommand&()>> &GetSubCommands();
    static SubCommand *FindSubCommand(std::string &cmdName);

    // for test code
    static bool RegisterSubCommand(const std::string& cmdName, std::unique_ptr<SubCommand> subCommand);
    static void ClearSubCommands();

    // check restart option
    bool CheckRestartOption(std::string &appPackage, bool targetSystemWide, bool restart,
                                                    std::vector<pid_t> &selectPids);

    // handle subcommand exclude
    bool HandleSubCommandExclude(const std::vector<pid_t> &excludeTids, const std::vector<std::string>
                                       &excludeThreadNames, std::vector<pid_t> &selectTids);
private:
    void ExcludeTidsFromSelectTids(const std::vector<pid_t> &excludeTids, std::vector<pid_t> &selectTids);
    void ExcludeThreadsFromSelectTids(const std::vector<std::string> &excludeThreadNames,
        std::vector<pid_t> &selectTids);
    VirtualRuntime virtualRuntime_;

    static std::mutex subCommandMutex_;
    static std::map<std::string, std::unique_ptr<SubCommand>> subCommandMap_;
    static std::map<std::string, std::function<SubCommand&()>> subCommandFuncMap_;
    // Above guarded by subCommandMutex_
protected:
    const std::string name_;
    const std::string brief_;
    std::string help_;
    bool dumpOptions_ = false;
    bool showHelp_ = false;
    bool isHM_ = false;
};
} // namespace HiPerf
} // namespace Developtools
} // namespace OHOS
#endif // HIPERF_SUBCOMMAND_H_