// Fill out your copyright notice in the Description page of Project Settings.
#include "CPPFunctionLibrary.h"
#include <chrono>
#include <cstdio>
#include <iostream>
#include <sstream>
#include <vector>
#include <memory>
#include <stdexcept>
#include <string>
#include <array>

void UCPPFunctionLibrary::CreateTxt(FString Path, FString FileName, FString text)
{
    if (Path == "") {
        Path = FPaths::ProjectSavedDir();
    }
    FString fullpath(Path + FileName);
    FFileHelper::SaveStringToFile(text, *fullpath, FFileHelper::EEncodingOptions::ForceUTF8);

}

bool UCPPFunctionLibrary::AppendStringToFile(FString DirPath, FString FileName, FString Data)
{
    // get file path
    FString FilePath;
    if (!DirPath.Len())
    {
        // default documents directory path + FileName
        FilePath = FPlatformProcess::UserDir() + FileName;
    }
    else
    {
        FilePath = DirPath + FileName;
    }
    UE_LOG(LogTemp, Log, TEXT("File path: %s"), *FilePath);

    // check file existence and write data to a file
    FString OldData;
    bool append_result;
    if (FPaths::FileExists(FilePath))
    {
        UE_LOG(LogTemp, Log, TEXT("File exists: true"));
        FFileHelper::LoadFileToString(OldData, *FilePath);
        OldData += Data;
        append_result = FFileHelper::SaveStringToFile(Data, *FilePath, FFileHelper::EEncodingOptions::ForceUTF8, &IFileManager::Get(), FILEWRITE_Append);
    }
    else
    {
        UE_LOG(LogTemp, Warning, TEXT("File exists: false"));
        append_result = FFileHelper::SaveStringToFile(Data, *FilePath, FFileHelper::EEncodingOptions::ForceUTF8);
    }

    // return append result
    if (append_result)
    {
        UE_LOG(LogTemp, Log, TEXT("Append: complete"));
        return true;
    }
    else
    {
        UE_LOG(LogTemp, Error, TEXT("Append: not complete"));
        return false;
    }
}

void UCPPFunctionLibrary::RunSystemCommand(FString Command)
{
    system(TCHAR_TO_ANSI(*Command));
}

void UCPPFunctionLibrary::GetExcelData(FString Command)
{
}

void UCPPFunctionLibrary::GetContentHTTP(FString Verb, FString Payload, FString Url)
{   
    /*TSharedPtr<IHttpRequest, ESPMode::ThreadSafe> Request = FHttpModule::Get().CreateRequest();
    Request->SetURL(Url);
    if (Payload.Len() > 0)
    {
        Request->SetContentAsString(Payload);
    }
    Request->SetVerb(Verb);
    Request->ProcessRequest();*/
}

int32 UCPPFunctionLibrary::GetUnixTimestamp()
{
    return std::chrono::duration_cast<std::chrono::seconds>(std::chrono::system_clock::now().time_since_epoch()).count();
}

void UCPPFunctionLibrary::CreateProc(FString PathToExec, TArray<FString> Args, bool Detach, bool Hidden, int32 Priority, FString OptionalWorkDir)
{
    FString StrArgs("");
    /*if (Args.Num())
        for (auto arg : Args)
            StrArgs += " " + arg;*/

    if (Args.Num() > 1)
    {
        StrArgs = Args[0];
        for (int32 v = 1; v < Args.Num(); v++)
        {
            StrArgs += " " + Args[v];
        }
    }
    else if (Args.Num() > 0)
    {
        StrArgs = Args[0];
    }

    FProcHandle PHandle = FPlatformProcess::CreateProc(
        *PathToExec,
        *StrArgs,
        Detach,
        Hidden,
        Hidden,
        nullptr,
        Priority,
        (OptionalWorkDir != "") ? *OptionalWorkDir : nullptr,
        nullptr
    );

    if (PHandle.IsValid())
    {
        UE_LOG(LogTemp, Warning, TEXT("ProcInfo: Valid"))
    }
    else
    {
        UE_LOG(LogTemp, Warning, TEXT("ProcInfo: NotValid"))
    }
}

FString UCPPFunctionLibrary::GetDataFromFile(FString FileName)
{
    FString FileData("");

    if (FPaths::FileExists(FileName))
        FFileHelper::LoadFileToString(FileData, *FileName);

    return FileData;
}

TArray<FString> UCPPFunctionLibrary::GetHardDisksSerialNumbers()
{
    TArray<FString> lines;
    std::string executeCommand = "wmic path win32_physicalmedia get SerialNumber";
    std::array<char, 128> buffer;
    std::string result;
    std::unique_ptr<FILE, decltype(&_pclose)> pipe(_popen(executeCommand.c_str(), "r"), _pclose);
    if (!pipe) {
        throw std::runtime_error("popen() failed!");
    }
    while (fgets(buffer.data(), buffer.size(), pipe.get()) != nullptr) {
        result += buffer.data();
    }
    std::cout << result << std::endl;
    std::istringstream istream(result);
    std::string line;
    int lineNum = 0;
    while (std::getline(istream, line))
    {
        if (!lineNum)
        {
            ++lineNum;
            continue;
        }
        lines.Push(line.c_str());
    }
    return lines;
}