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/*
* 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_CONFIGURATION_H
#define SMOLBOTE_CONFIGURATION_H
#include <QAction>
#include <QString>
#include <initializer_list>
#include <memory>
#include <optional>
#include <string>
#include <unordered_map>
#include <variant>
#include <vector>
#if defined(__clang__)
#define consumable(X) [[clang::consumable(X)]]
#define return_typestate(X) [[clang::return_typestate(X)]]
#define callable_when(X) [[clang::callable_when(X)]]
#define param_typestate(X) [[clang::param_typestate(X)]]
#else
#define consumable(X)
#define return_typestate(X)
#define callable_when(X)
#define param_typestate(X)
#endif
typedef std::variant<std::string, int, bool> conf_value_t;
class consumable(unconsumed) Configuration : private std::unordered_map<std::string, conf_value_t>
{
friend std::ostream &operator<<(std::ostream &out, const Configuration &obj);
public:
return_typestate(unconsumed) explicit Configuration();
return_typestate(unconsumed) explicit Configuration(std::initializer_list<std::pair<std::string, conf_value_t>> l) noexcept;
explicit Configuration(Configuration && other param_typestate(unconsumed)) = default;
~Configuration() = default;
callable_when(unconsumed) void read(std::basic_istream<char> & input);
template <typename T>
callable_when(unconsumed) std::optional<T> value(const char *path) const
{
if(use_global)
return instance()->value<T>(path);
if(this->count(path) == 0) {
return std::nullopt;
}
// path is guaranteed to exist
const auto value = at(path);
if constexpr(std::is_same_v<T, QString> || std::is_same_v<T, std::string>) {
auto r = [&value]() {
if(std::holds_alternative<std::string>(value))
return std::get<std::string>(value);
else if(std::holds_alternative<int>(value))
return std::to_string(std::get<int>(value));
else
return std::get<bool>(value) ? std::string("true") : std::string("false");
}();
if(r.front() == '~')
r.replace(0, 1, m_homePath);
if constexpr(std::is_same_v<T, QString>)
return std::make_optional(QString::fromStdString(r));
else
return std::make_optional(r);
} else if constexpr(std::is_same_v<T, QStringList>) {
return std::make_optional(QString::fromStdString(std::get<std::string>(value)).split(';'));
} else if(std::holds_alternative<T>(value)) {
return std::optional<T>(std::get<T>(value));
} else
return std::nullopt;
} // std::optional<T> value(path) const
static void move_global(std::unique_ptr<Configuration> && conf);
private:
static Configuration *instance();
const std::string m_homePath;
const bool use_global = false;
};
void setShortcut(QAction *action, const char *name);
std::ostream &operator<<(std::ostream &out, const Configuration &obj);
#endif // SMOLBOTE_CONFIGURATION_H
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