/*
 * This file is part of smolbote. It's copyrighted by the contributors recorded
 * in the version control history of the file, available from its original
 * location: https://neueland.iserlohn-fortress.net/gitea/aqua/smolbote
 *
 * SPDX-License-Identifier: GPL-3.0
 */

#ifndef SMOLBOTE_COMMANDLINE_H
#define SMOLBOTE_COMMANDLINE_H

#include <QString>
#include <QStringList>
#include <boost/program_options.hpp>

class CommandLine
{
public:
    CommandLine(int argc, char **argv);

    bool exists(const char *path) const
    {
        return (vm.count(path) > 0);
    }

    template <typename T>
    std::optional<T> value(const char *path) const
    {
        if(vm.count(path) == 0) {
            return std::nullopt;
        }

        if constexpr(std::is_same_v<T, QString>) {
            return std::optional<QString>(QString::fromStdString(this->value<std::string>(path).value()));
            //return std::optional<QString>(vm[path].as<const char*>());

        } else if constexpr(std::is_same_v<T, QStringList>) {
            QStringList r;
            for(const std::string &item : this->value<std::vector<std::string>>(path).value()) {
                r.append(QString::fromStdString(item));
            }
            return std::optional<QStringList>(r);

        } else if constexpr(std::is_same_v<T, std::string>) {

            if(vm[path].value().type() == typeid(int)) {
                return std::optional<std::string>(std::to_string(vm[path].as<int>()));
            }

            if(vm[path].value().type() == typeid(bool)) {
                return std::optional<std::string>(vm[path].as<bool>() ? "true" : "false");
            }

            std::string r = vm[path].as<std::string>();

            // check if it's a path
            if(r.front() == '~') {
                r.replace(0, 1, m_homePath);
            }

            return std::optional<std::string>(r);

        } else
            return std::optional<T>(vm[path].as<T>());
    }

    const boost::program_options::options_description& description() const
    {
        return m_description;
    }

private:
    const std::string m_homePath;
    boost::program_options::options_description m_description;
    boost::program_options::positional_options_description m_arguments;
    boost::program_options::variables_map vm;
};

#endif // SMOLBOTE_COMMANDLINE_H