#include "history.h"
#include <QDir>
#include <algorithm>
#include <filesystem>
#include <fstream>

namespace fs = std::filesystem;

CHistory::CHistory()
{
    default_set();
}

bool CHistory::push(const std::string& content)
{
    std::vector<std::string> vec;
    read_file(vec);

    if (std::find(vec.begin(), vec.end(), content) == vec.end()) {
        vec.push_back(content);
    } else {
        return true;
    }

    if (vec.size() > 10) {
        vec.erase(vec.begin());
    }
    if (!write_file(vec)) {
        return false;
    }
    return true;
}

bool CHistory::get_history(std::vector<std::string>& vec)
{
    return read_file(vec);
}

void CHistory::default_set()
{
    QDir dir;
    std::string path = dir.homePath().toStdString();
    fs::path p(path);
    p.append(".config/OneLevelXmlOpr");

    if (!fs::exists(p)) {
        fs::create_directories(p);
    }

    work_dir_ = p.string();
    p.append("OneLevelXmlOpr.history");
    work_file_ = p.string();
}

bool CHistory::read_file(std::vector<std::string>& vec)
{
    vec.clear();
    std::ifstream file(work_file_);
    if (!file.is_open()) {
        return false;
    }
    std::string line;
    while (std::getline(file, line)) {
        vec.push_back(line);
    }
    return true;
}

bool CHistory::write_file(std::vector<std::string>& vec)
{
    std::ofstream file(work_file_);
    if (!file.is_open()) {
        return false;
    }
    for (const auto& line : vec) {
        file << line << std::endl;
    }
    file.close();
    return true;
}