/*
 * Copyright © Canonical Ltd.
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version 2 or 3,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef MIR_COMMON_INPUT_EVENT_H_
#define MIR_COMMON_INPUT_EVENT_H_

#include <mir/events/event.h>

#include <format>

struct MirInputEvent : MirEvent
{
    MirInputEventType input_type() const;

    int window_id() const;
    void set_window_id(int id);

    MirInputDeviceId device_id() const;
    void set_device_id(MirInputDeviceId id);

    std::chrono::nanoseconds event_time() const;
    void set_event_time(std::chrono::nanoseconds const& event_time);

    MirInputEventModifiers modifiers() const;
    void set_modifiers(MirInputEventModifiers mods);

    MirKeyboardEvent* to_keyboard();
    MirKeyboardEvent const* to_keyboard() const;

    MirPointerEvent* to_pointer();
    MirPointerEvent const* to_pointer() const;

    MirTouchEvent* to_touch();
    MirTouchEvent const* to_touch() const;

protected:
    MirInputEvent(
        MirInputEventType input_type,
        MirInputDeviceId dev,
        std::chrono::nanoseconds et,
        MirInputEventModifiers mods);

    MirInputEvent(MirInputEventType input_type);
    MirInputEvent(MirInputEvent const& event) = default;
    MirInputEvent& operator=(MirInputEvent const& event) = delete;

private:
    MirInputEventType const input_type_;
    int window_id_ = 0;
    MirInputDeviceId device_id_ = 0;
    std::chrono::nanoseconds event_time_ = {};
    MirInputEventModifiers modifiers_ = 0;
};

template<>
struct std::formatter<MirInputEventType>
{
    constexpr auto parse(std::format_parse_context& ctx) { return ctx.begin(); }

    auto format(MirInputEventType type, std::format_context& ctx) const -> std::format_context::iterator;
};

#endif /* MIR_COMMON_INPUT_EVENT_H_ */
