/*
 * 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 <thread>
#include <cstdio>
#include <ios>
#include <vector>
#include <iostream>
#include <fstream>
#include <sstream>
#include <regex>
#include <sys/wait.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "include/startup_delay.h"
#include "include/sp_utils.h"
#include "include/sp_log.h"
#include "include/common.h"

namespace OHOS {
namespace SmartPerf {
StartUpDelay::StartUpDelay() {}
StartUpDelay::~StartUpDelay() {}
void StartUpDelay::GetTrace(const std::string &traceName) const
{
    std::string result;
    std::string cmdString;
    if (SPUtils::IsHmKernel()) {
        cmdString = CMD_COMMAND_MAP.at(CmdCommand::HITRACE_1024);
    } else {
        cmdString = CMD_COMMAND_MAP.at(CmdCommand::HITRACE_2048);
    }
    SPUtils::LoadCmd(cmdString + traceName, result);
    if (result.find("OpenRecording failed") != std::string::npos) {
        std::string str;
        std::string traceFinishStr = "hitrace --trace_finish";
        SPUtils::LoadCmd(traceFinishStr, str);
        SPUtils::LoadCmd(cmdString + traceName, result);
    }
}

void StartUpDelay::GetHisysId() const
{
    int time = 10;
    sleep(time);
    std::string str = "";
    std::string cmd = HISYSEVENT_CMD_MAP.at(HisyseventCmd::HISYSEVENT);
    SPUtils::LoadCmd(cmd, str);
    std::stringstream ss(str);
    std::string line = "";
    getline(ss, line);
    std::stringstream ssLine(line);
    std::string word = "";
    std::string secondStr;
    int count = 0;
    int num = 2;
    while (ssLine >> word) {
        count++;
        if (count == num) {
            secondStr = word;
            break;
        }
    }
    std::string killCmd = CMD_COMMAND_MAP.at(CmdCommand::KILL_CMD);
    SPUtils::LoadCmd(killCmd + secondStr, str);
}

void StartUpDelay::GetHisysIdAndKill() const
{
    int time = 10;
    sleep(time);
    std::string str = "";
    std::string cmd = HISYSEVENT_CMD_MAP.at(HisyseventCmd::HISYS_PID);
    SPUtils::LoadCmd(cmd, str);
    std::stringstream ss(str);
    std::vector<std::string> hisysIdVec;
    std::string singleId;
    while (ss >> singleId) {
        hisysIdVec.push_back(singleId);
    }
    std::string killCmd = CMD_COMMAND_MAP.at(CmdCommand::KILL_CMD);
    for (size_t i = 0; i < hisysIdVec.size(); i++) {
        SPUtils::LoadCmd(killCmd + hisysIdVec[i], str);
    }
}
bool StartUpDelay::GetSpTcp()
{
    std::string resultPid;
    std::string str;
    std::string cmd = CMD_COMMAND_MAP.at(CmdCommand::PIDOF_SP);
    SPUtils::LoadCmd(cmd, resultPid);
    std::vector<std::string> vec;
    std::string token;
    size_t pos = 0;
    while ((pos = resultPid.find(' ')) != std::string::npos) {
        token = resultPid.substr(0, pos);
        vec.push_back(token);
        resultPid.erase(0, pos + 1);
    }
    if (vec.size() > 0) {
        std::string killCmd = CMD_COMMAND_MAP.at(CmdCommand::KILL_CMD);
        for (size_t i = 0; i < vec.size(); i++) {
            SPUtils::LoadCmd(killCmd + vec[i], str);
        }
    }
    return false;
}

bool StartUpDelay::GetSpClear() const
{
    std::string resultPid;
    std::string str;
    std::string cmd = CMD_COMMAND_MAP.at(CmdCommand::PIDOF_SP);
    SPUtils::LoadCmd("pidof SP_daemon", resultPid);
    std::string token;
    std::string curPid = std::to_string(getpid());
    std::stringstream ss(resultPid);
    std::string killCmd = CMD_COMMAND_MAP.at(CmdCommand::KILL_CMD);
    while (ss >> token) {
        if (token != curPid) {
            SPUtils::LoadCmd("kill " + token, str);
        }
    }

    return false;
}

void StartUpDelay::ClearOldServer() const
{
    std::string curPid = std::to_string(getpid());
    std::string commandServer = CMD_COMMAND_MAP.at(CmdCommand::SERVER_GREP);
    std::string resultPidServer;
    std::string commandEditorServer = CMD_COMMAND_MAP.at(CmdCommand::EDITOR_SERVER_GREP);
    std::string resultPidEditorServer;

    SPUtils::LoadCmdWithLinkBreak(commandServer, false, resultPidServer);
    SPUtils::LoadCmdWithLinkBreak(commandEditorServer, false, resultPidEditorServer);

    std::istringstream iss(resultPidServer + '\n' + resultPidEditorServer);
    std::string resultLine;
    std::string killResult;
    std::string killCmd = CMD_COMMAND_MAP.at(CmdCommand::KILL_CMD);
    while (std::getline(iss, resultLine)) {
        if (resultLine.empty() || resultLine.find("sh -c") != std::string::npos) {
            continue;
        }

        std::istringstream lineStream(resultLine);
        std::string token;

        int count = 0;
        while (lineStream >> token) {
            if (count == 1) {
                break;
            }
            count++;
        }

        if (token != curPid) {
            SPUtils::LoadCmd(killCmd + token, killResult);
            LOGI("Find old server: %s, killed.", token.c_str());
        }
    }
}
std::string StartUpDelay::ExecuteCommand(const std::string &command, const std::vector<std::string> &args)
{
    std::string output = "";
    int pipefd[2];
    if (pipe(pipefd) == -1) {
        LOGE("startup_delay::Failed to create pipe: %s", strerror(errno));
        return output;
    }
    pid_t pid = fork();
    if (pid == -1) {
        LOGE("startup_delay::Failed to fork: %s", strerror(errno));
        close(pipefd[0]);
        close(pipefd[1]);
        return output;
    }
    if (pid == 0) {
        close(pipefd[0]);
        dup2(pipefd[1], STDOUT_FILENO);
        close(pipefd[1]);
        std::vector<char*> argv(args.size() + 1);
        for (size_t i = 0; i < args.size(); ++i) {
            argv[i] = const_cast<char*>(args[i].c_str());
        }
        argv[args.size()] = nullptr;
        execvp(command.c_str(), argv.data());
        LOGE("startup_delay::Failed to execute pid: %s", strerror(errno));
        _exit(EXIT_FAILURE);
    }
    close(pipefd[1]);
    char buf[1024];
    ssize_t nread;
    while ((nread = read(pipefd[0], buf, sizeof(buf) - 1)) > 0) {
        if (nread == sizeof(buf) - 1) {
            LOGE("startup_delay::Buffer overflow: %s", strerror(errno));
            break;
        }
        buf[nread] = '\0';
        output.append(buf);
    }
    if (nread == -1) {
        LOGE("startup_delay::Failed to read from pipe: %s", strerror(errno));
    }
    close(pipefd[0]);
    int status;
    if (waitpid(pid, &status, 0) == -1) {
        LOGE("startup_delay::Failed to wait for child process: %s", strerror(errno));
        return output;
    }
    return output;
}

std::string StartUpDelay::GetPidByPkg(const std::string &curPkgName)
{
    const std::string pidof = "pidof";
    const std::vector<std::string> args = {pidof, curPkgName};
    std::string resultProcId = ExecuteCommand(pidof, args);
    if (!resultProcId.empty() && resultProcId.back() == '\n') {
        resultProcId.pop_back();
        LOGI("startup_delay::output: (%s)", resultProcId.c_str());
    }
    return resultProcId;
}
}
}