#pragma once
#include "arch/Keyboard.h"
#include "fs/devices/DeviceRegistry.h"
#include <bits/termios.h>
#include <luna/Buffer.h>

class ConsoleDevice : public Device
{
  public:
    // Initializer for DeviceRegistry.
    static Result<void> create();

    Result<usize> read(u8*, usize, usize) const override;

    Result<usize> write(const u8*, usize, usize) override;

    static void did_press_or_release_key(u8 scancode);

    bool will_block_if_read() const override;

    Result<u64> ioctl(int request, void* arg) override;

    StringView device_path() const override
    {
        return "console";
    }

    Result<u64> isatty() const override
    {
        return 1;
    }

    virtual ~ConsoleDevice() = default;

  private:
    struct termios m_settings;
    mutable Buffer m_input_buffer;
    Option<pid_t> m_foreground_process_group {};
    Vector<u8> m_line_buffer;
    mutable Keyboard::KeyboardState m_kb_state;

    static Vector<SharedPtr<ConsoleDevice>> m_console_devices;

    void process_key_event(u8 scancode);

    mutable bool m_may_read_without_blocking { false };

    inline bool is_canonical() const
    {
        return m_settings.c_lflag & ICANON;
    }

    Result<void> handle_background_process_group(bool can_succeed, int signo) const;
};