use {libloading::os::unix::Library, std::sync::LazyLock, uapi::c};

include!(concat!(env!("OUT_DIR"), "/libinput_tys.rs"));

pub type libinput_log_handler = unsafe extern "C" fn();

#[repr(transparent)]
pub struct libinput(u8);
#[repr(transparent)]
pub struct libinput_device(u8);
#[repr(transparent)]
pub struct libinput_device_group(u8);
#[repr(transparent)]
pub struct libinput_event(u8);
#[repr(transparent)]
pub struct libinput_event_keyboard(u8);
#[repr(transparent)]
pub struct libinput_event_pointer(u8);
#[repr(transparent)]
pub struct libinput_event_gesture(u8);
#[repr(transparent)]
pub struct libinput_event_switch(u8);
#[repr(transparent)]
pub struct libinput_event_tablet_tool(u8);
#[repr(transparent)]
pub struct libinput_event_tablet_pad(u8);
#[repr(transparent)]
pub struct libinput_tablet_pad_mode_group(u8);
#[repr(transparent)]
pub struct libinput_tablet_tool(u8);
// #[repr(transparent)]
// pub struct libinput_tablet_pad(u8);
#[repr(transparent)]
pub struct libinput_event_touch(u8);

#[link(name = "input")]
unsafe extern "C" {
    pub fn libinput_log_set_handler(libinput: *mut libinput, log_handler: libinput_log_handler);
    pub fn libinput_log_set_priority(libinput: *mut libinput, priority: libinput_log_priority);
    pub fn libinput_path_create_context(
        interface: *const libinput_interface,
        user_data: *mut c::c_void,
    ) -> *mut libinput;
    pub fn libinput_unref(libinput: *mut libinput) -> *mut libinput;
    pub fn libinput_get_fd(libinput: *mut libinput) -> c::c_int;
    pub fn libinput_dispatch(libinput: *mut libinput) -> c::c_int;
    pub fn libinput_get_event(libinput: *mut libinput) -> *mut libinput_event;

    pub fn libinput_device_set_user_data(device: *mut libinput_device, user_data: *mut c::c_void);
    pub fn libinput_device_get_user_data(device: *mut libinput_device) -> *mut c::c_void;
    pub fn libinput_device_ref(device: *mut libinput_device) -> *mut libinput_device;
    pub fn libinput_device_unref(device: *mut libinput_device) -> *mut libinput_device;
    pub fn libinput_path_add_device(
        libinput: *mut libinput,
        path: *const c::c_char,
    ) -> *mut libinput_device;
    pub fn libinput_path_remove_device(device: *mut libinput_device);
    pub fn libinput_device_has_capability(
        device: *mut libinput_device,
        cap: libinput_device_capability,
    ) -> c::c_int;
    pub fn libinput_device_config_left_handed_is_available(
        device: *mut libinput_device,
    ) -> c::c_int;
    pub fn libinput_device_config_left_handed_get(device: *mut libinput_device) -> c::c_int;
    pub fn libinput_device_config_left_handed_set(
        device: *mut libinput_device,
        left_handed: c::c_int,
    ) -> libinput_config_status;
    pub fn libinput_device_config_accel_is_available(device: *mut libinput_device) -> c::c_int;
    pub fn libinput_device_config_accel_get_profile(
        device: *mut libinput_device,
    ) -> libinput_config_accel_profile;
    pub fn libinput_device_config_accel_set_profile(
        device: *mut libinput_device,
        profile: libinput_config_accel_profile,
    ) -> libinput_config_status;
    pub fn libinput_device_config_accel_get_speed(device: *mut libinput_device) -> f64;
    pub fn libinput_device_config_accel_set_speed(
        device: *mut libinput_device,
        speed: f64,
    ) -> libinput_config_status;
    pub fn libinput_device_get_name(device: *mut libinput_device) -> *const c::c_char;
    pub fn libinput_device_config_tap_get_finger_count(device: *mut libinput_device) -> c::c_int;
    pub fn libinput_device_config_tap_set_enabled(
        device: *mut libinput_device,
        enable: libinput_config_tap_state,
    ) -> libinput_config_status;
    pub fn libinput_device_config_tap_get_enabled(
        device: *mut libinput_device,
    ) -> libinput_config_tap_state;
    pub fn libinput_device_config_tap_set_drag_enabled(
        device: *mut libinput_device,
        enable: libinput_config_drag_state,
    ) -> libinput_config_status;
    pub fn libinput_device_config_tap_get_drag_enabled(
        device: *mut libinput_device,
    ) -> libinput_config_drag_state;
    pub fn libinput_device_config_tap_set_drag_lock_enabled(
        device: *mut libinput_device,
        enable: libinput_config_drag_lock_state,
    ) -> libinput_config_status;
    pub fn libinput_device_config_tap_get_drag_lock_enabled(
        device: *mut libinput_device,
    ) -> libinput_config_drag_lock_state;
    pub fn libinput_device_config_scroll_set_natural_scroll_enabled(
        device: *mut libinput_device,
        enable: c::c_int,
    ) -> libinput_config_status;
    pub fn libinput_device_config_scroll_get_natural_scroll_enabled(
        device: *mut libinput_device,
    ) -> c::c_int;
    pub fn libinput_device_config_scroll_has_natural_scroll(
        device: *mut libinput_device,
    ) -> c::c_int;

    pub fn libinput_event_destroy(event: *mut libinput_event);
    pub fn libinput_event_get_type(event: *mut libinput_event) -> libinput_event_type;
    pub fn libinput_event_get_device(event: *mut libinput_event) -> *mut libinput_device;

    pub fn libinput_event_get_keyboard_event(
        event: *mut libinput_event,
    ) -> *mut libinput_event_keyboard;
    pub fn libinput_event_keyboard_get_key(event: *mut libinput_event_keyboard) -> u32;
    pub fn libinput_event_keyboard_get_key_state(
        event: *mut libinput_event_keyboard,
    ) -> libinput_key_state;
    pub fn libinput_event_keyboard_get_time_usec(event: *mut libinput_event_keyboard) -> u64;

    pub fn libinput_event_get_pointer_event(
        event: *mut libinput_event,
    ) -> *mut libinput_event_pointer;
    pub fn libinput_event_pointer_get_time_usec(event: *mut libinput_event_pointer) -> u64;
    pub fn libinput_event_pointer_get_dx(event: *mut libinput_event_pointer) -> f64;
    pub fn libinput_event_pointer_get_dy(event: *mut libinput_event_pointer) -> f64;
    pub fn libinput_event_pointer_get_dx_unaccelerated(event: *mut libinput_event_pointer) -> f64;
    pub fn libinput_event_pointer_get_dy_unaccelerated(event: *mut libinput_event_pointer) -> f64;
    pub fn libinput_event_pointer_get_button(event: *mut libinput_event_pointer) -> u32;
    pub fn libinput_event_pointer_get_button_state(
        event: *mut libinput_event_pointer,
    ) -> libinput_button_state;
    pub fn libinput_event_pointer_get_scroll_value(
        event: *mut libinput_event_pointer,
        axis: libinput_pointer_axis,
    ) -> f64;
    pub fn libinput_event_pointer_get_scroll_value_v120(
        event: *mut libinput_event_pointer,
        axis: libinput_pointer_axis,
    ) -> f64;
    pub fn libinput_event_pointer_has_axis(
        event: *mut libinput_event_pointer,
        axis: libinput_pointer_axis,
    ) -> c::c_int;
    // pub fn libinput_event_pointer_get_axis_source(
    //     event: *mut libinput_event_pointer,
    // ) -> libinput_pointer_axis_source;
    // pub fn libinput_event_pointer_get_axis_value_discrete(
    //     event: *mut libinput_event_pointer,
    //     axis: libinput_pointer_axis,
    // ) -> f64;

    pub fn libinput_event_get_gesture_event(
        event: *mut libinput_event,
    ) -> *mut libinput_event_gesture;
    pub fn libinput_event_gesture_get_time_usec(event: *mut libinput_event_gesture) -> u64;
    pub fn libinput_event_gesture_get_finger_count(event: *mut libinput_event_gesture) -> c::c_int;
    pub fn libinput_event_gesture_get_cancelled(event: *mut libinput_event_gesture) -> c::c_int;
    pub fn libinput_event_gesture_get_dx(event: *mut libinput_event_gesture) -> f64;
    pub fn libinput_event_gesture_get_dy(event: *mut libinput_event_gesture) -> f64;
    pub fn libinput_event_gesture_get_dx_unaccelerated(event: *mut libinput_event_gesture) -> f64;
    pub fn libinput_event_gesture_get_dy_unaccelerated(event: *mut libinput_event_gesture) -> f64;
    pub fn libinput_event_gesture_get_scale(event: *mut libinput_event_gesture) -> f64;
    pub fn libinput_event_gesture_get_angle_delta(event: *mut libinput_event_gesture) -> f64;

    pub fn libinput_event_get_switch_event(
        event: *mut libinput_event,
    ) -> *mut libinput_event_switch;
    pub fn libinput_event_switch_get_switch(event: *mut libinput_event_switch) -> libinput_switch;
    pub fn libinput_event_switch_get_switch_state(
        event: *mut libinput_event_switch,
    ) -> libinput_switch_state;
    pub fn libinput_event_switch_get_time_usec(event: *mut libinput_event_switch) -> u64;

    pub fn libinput_device_get_device_group(
        device: *mut libinput_device,
    ) -> *mut libinput_device_group;
    pub fn libinput_device_group_set_user_data(group: *mut libinput_device_group, user_data: usize);
    pub fn libinput_device_group_get_user_data(group: *mut libinput_device_group) -> usize;

    pub fn libinput_device_get_id_product(device: *mut libinput_device) -> c::c_uint;
    pub fn libinput_device_get_id_vendor(device: *mut libinput_device) -> c::c_uint;

    pub fn libinput_event_get_tablet_tool_event(
        event: *mut libinput_event,
    ) -> *mut libinput_event_tablet_tool;
    pub fn libinput_event_get_tablet_pad_event(
        event: *mut libinput_event,
    ) -> *mut libinput_event_tablet_pad;
    pub fn libinput_event_tablet_tool_get_tool(
        event: *mut libinput_event_tablet_tool,
    ) -> *mut libinput_tablet_tool;
    pub fn libinput_event_tablet_pad_get_mode_group(
        event: *mut libinput_event_tablet_pad,
    ) -> *mut libinput_tablet_pad_mode_group;
    pub fn libinput_event_tablet_tool_x_has_changed(
        event: *mut libinput_event_tablet_tool,
    ) -> c::c_int;
    pub fn libinput_event_tablet_tool_y_has_changed(
        event: *mut libinput_event_tablet_tool,
    ) -> c::c_int;
    pub fn libinput_event_tablet_tool_pressure_has_changed(
        event: *mut libinput_event_tablet_tool,
    ) -> c::c_int;
    pub fn libinput_event_tablet_tool_distance_has_changed(
        event: *mut libinput_event_tablet_tool,
    ) -> c::c_int;
    pub fn libinput_event_tablet_tool_tilt_x_has_changed(
        event: *mut libinput_event_tablet_tool,
    ) -> c::c_int;
    pub fn libinput_event_tablet_tool_tilt_y_has_changed(
        event: *mut libinput_event_tablet_tool,
    ) -> c::c_int;
    pub fn libinput_event_tablet_tool_rotation_has_changed(
        event: *mut libinput_event_tablet_tool,
    ) -> c::c_int;
    pub fn libinput_event_tablet_tool_slider_has_changed(
        event: *mut libinput_event_tablet_tool,
    ) -> c::c_int;
    // pub fn libinput_event_tablet_tool_size_major_has_changed(
    //     event: *mut libinput_event_tablet_tool,
    // ) -> c::c_int;
    // pub fn libinput_event_tablet_tool_size_minor_has_changed(
    //     event: *mut libinput_event_tablet_tool,
    // ) -> c::c_int;
    pub fn libinput_event_tablet_tool_wheel_has_changed(
        event: *mut libinput_event_tablet_tool,
    ) -> c::c_int;
    // pub fn libinput_event_tablet_tool_get_x(event: *mut libinput_event_tablet_tool) -> f64;
    // pub fn libinput_event_tablet_tool_get_y(event: *mut libinput_event_tablet_tool) -> f64;
    pub fn libinput_event_tablet_tool_get_dx(event: *mut libinput_event_tablet_tool) -> f64;
    pub fn libinput_event_tablet_tool_get_dy(event: *mut libinput_event_tablet_tool) -> f64;
    pub fn libinput_event_tablet_tool_get_pressure(event: *mut libinput_event_tablet_tool) -> f64;
    pub fn libinput_event_tablet_tool_get_distance(event: *mut libinput_event_tablet_tool) -> f64;
    pub fn libinput_event_tablet_tool_get_tilt_x(event: *mut libinput_event_tablet_tool) -> f64;
    pub fn libinput_event_tablet_tool_get_tilt_y(event: *mut libinput_event_tablet_tool) -> f64;
    pub fn libinput_event_tablet_tool_get_rotation(event: *mut libinput_event_tablet_tool) -> f64;
    pub fn libinput_event_tablet_tool_get_slider_position(
        event: *mut libinput_event_tablet_tool,
    ) -> f64;
    // pub fn libinput_event_tablet_tool_get_size_major(event: *mut libinput_event_tablet_tool)
    //     -> f64;
    // pub fn libinput_event_tablet_tool_get_size_minor(event: *mut libinput_event_tablet_tool)
    //     -> f64;
    pub fn libinput_event_tablet_tool_get_wheel_delta(
        event: *mut libinput_event_tablet_tool,
    ) -> f64;
    pub fn libinput_event_tablet_tool_get_wheel_delta_discrete(
        event: *mut libinput_event_tablet_tool,
    ) -> c::c_int;
    pub fn libinput_event_tablet_tool_get_x_transformed(
        event: *mut libinput_event_tablet_tool,
        width: u32,
    ) -> f64;
    pub fn libinput_event_tablet_tool_get_y_transformed(
        event: *mut libinput_event_tablet_tool,
        width: u32,
    ) -> f64;
    pub fn libinput_event_tablet_tool_get_proximity_state(
        event: *mut libinput_event_tablet_tool,
    ) -> libinput_tablet_tool_proximity_state;
    pub fn libinput_event_tablet_tool_get_tip_state(
        event: *mut libinput_event_tablet_tool,
    ) -> libinput_tablet_tool_tip_state;
    pub fn libinput_event_tablet_tool_get_button(event: *mut libinput_event_tablet_tool) -> u32;
    pub fn libinput_event_tablet_tool_get_button_state(
        event: *mut libinput_event_tablet_tool,
    ) -> libinput_button_state;
    // pub fn libinput_event_tablet_tool_get_seat_button_count(
    //     event: *mut libinput_event_tablet_tool,
    // ) -> u32;
    pub fn libinput_event_tablet_tool_get_time_usec(event: *mut libinput_event_tablet_tool) -> u64;
    pub fn libinput_tablet_tool_get_type(
        tool: *mut libinput_tablet_tool,
    ) -> libinput_tablet_tool_type;
    pub fn libinput_tablet_tool_get_tool_id(tool: *mut libinput_tablet_tool) -> u64;
    pub fn libinput_tablet_tool_has_pressure(tool: *mut libinput_tablet_tool) -> c::c_int;
    pub fn libinput_tablet_tool_has_distance(tool: *mut libinput_tablet_tool) -> c::c_int;
    pub fn libinput_tablet_tool_has_tilt(tool: *mut libinput_tablet_tool) -> c::c_int;
    pub fn libinput_tablet_tool_has_rotation(tool: *mut libinput_tablet_tool) -> c::c_int;
    pub fn libinput_tablet_tool_has_slider(tool: *mut libinput_tablet_tool) -> c::c_int;
    // pub fn libinput_tablet_tool_has_size(tool: *mut libinput_tablet_tool) -> c::c_int;
    pub fn libinput_tablet_tool_has_wheel(tool: *mut libinput_tablet_tool) -> c::c_int;
    // pub fn libinput_tablet_tool_has_button(tool: *mut libinput_tablet_tool, code: u32) -> c::c_int;
    // pub fn libinput_tablet_tool_is_unique(tool: *mut libinput_tablet_tool) -> c::c_int;
    pub fn libinput_tablet_tool_get_serial(tool: *mut libinput_tablet_tool) -> u64;
    pub fn libinput_tablet_tool_get_user_data(tool: *mut libinput_tablet_tool) -> usize;
    pub fn libinput_tablet_tool_set_user_data(tool: *mut libinput_tablet_tool, user_data: usize);
    pub fn libinput_event_tablet_pad_get_ring_position(
        event: *mut libinput_event_tablet_pad,
    ) -> f64;
    pub fn libinput_event_tablet_pad_get_ring_number(
        event: *mut libinput_event_tablet_pad,
    ) -> c::c_uint;
    pub fn libinput_event_tablet_pad_get_ring_source(
        event: *mut libinput_event_tablet_pad,
    ) -> libinput_tablet_pad_ring_axis_source;
    pub fn libinput_event_tablet_pad_get_strip_position(
        event: *mut libinput_event_tablet_pad,
    ) -> f64;
    pub fn libinput_event_tablet_pad_get_strip_number(
        event: *mut libinput_event_tablet_pad,
    ) -> c::c_uint;
    pub fn libinput_event_tablet_pad_get_strip_source(
        event: *mut libinput_event_tablet_pad,
    ) -> libinput_tablet_pad_strip_axis_source;
    pub fn libinput_event_tablet_pad_get_button_number(
        event: *mut libinput_event_tablet_pad,
    ) -> u32;
    pub fn libinput_event_tablet_pad_get_button_state(
        event: *mut libinput_event_tablet_pad,
    ) -> libinput_button_state;
    // pub fn libinput_event_tablet_pad_get_key(event: *mut libinput_event_tablet_pad) -> u32;
    // pub fn libinput_event_tablet_pad_get_key_state(
    //     event: *mut libinput_event_tablet_pad,
    // ) -> libinput_key_state;
    pub fn libinput_event_tablet_pad_get_mode(event: *mut libinput_event_tablet_pad) -> c::c_uint;
    pub fn libinput_event_tablet_pad_get_time_usec(event: *mut libinput_event_tablet_pad) -> u64;
    pub fn libinput_device_tablet_pad_get_mode_group(
        device: *mut libinput_device,
        index: c::c_uint,
    ) -> *mut libinput_tablet_pad_mode_group;
    pub fn libinput_device_tablet_pad_get_num_mode_groups(device: *mut libinput_device)
    -> c::c_int;
    pub fn libinput_device_tablet_pad_get_num_buttons(device: *mut libinput_device) -> c::c_int;
    pub fn libinput_device_tablet_pad_get_num_rings(device: *mut libinput_device) -> c::c_int;
    pub fn libinput_device_tablet_pad_get_num_strips(device: *mut libinput_device) -> c::c_int;
    pub fn libinput_tablet_pad_mode_group_get_index(
        group: *mut libinput_tablet_pad_mode_group,
    ) -> c::c_uint;
    pub fn libinput_tablet_pad_mode_group_get_num_modes(
        group: *mut libinput_tablet_pad_mode_group,
    ) -> c::c_uint;
    pub fn libinput_tablet_pad_mode_group_get_mode(
        group: *mut libinput_tablet_pad_mode_group,
    ) -> c::c_uint;
    pub fn libinput_tablet_pad_mode_group_has_button(
        group: *mut libinput_tablet_pad_mode_group,
        button: c::c_uint,
    ) -> c::c_int;
    pub fn libinput_tablet_pad_mode_group_has_ring(
        group: *mut libinput_tablet_pad_mode_group,
        ring: c::c_uint,
    ) -> c::c_int;
    pub fn libinput_tablet_pad_mode_group_has_strip(
        group: *mut libinput_tablet_pad_mode_group,
        strip: c::c_uint,
    ) -> c::c_int;
    // pub fn libinput_tablet_pad_mode_group_button_is_toggle(
    //     group: *mut libinput_tablet_pad_mode_group,
    //     button: c::c_uint,
    // ) -> c::c_int;

    pub fn libinput_event_get_touch_event(event: *mut libinput_event) -> *mut libinput_event_touch;
    pub fn libinput_event_touch_get_seat_slot(event: *mut libinput_event_touch) -> i32;
    pub fn libinput_event_touch_get_time_usec(event: *mut libinput_event_touch) -> u64;
    // pub fn libinput_event_touch_get_x(event: *mut libinput_event_touch) -> f64;
    pub fn libinput_event_touch_get_x_transformed(
        event: *mut libinput_event_touch,
        width: u32,
    ) -> f64;
    // pub fn libinput_event_touch_get_y(event: *mut libinput_event_touch) -> f64;
    pub fn libinput_event_touch_get_y_transformed(
        event: *mut libinput_event_touch,
        height: u32,
    ) -> f64;
    pub fn libinput_device_config_calibration_has_matrix(device: *mut libinput_device) -> c::c_int;
    pub fn libinput_device_config_calibration_set_matrix(
        device: *mut libinput_device,
        matrix: *const [f32; 6],
    ) -> libinput_config_status;
    pub fn libinput_device_config_calibration_get_matrix(
        device: *mut libinput_device,
        matrix: *mut [f32; 6],
    ) -> c::c_int;
}

#[repr(C)]
pub struct libinput_interface {
    pub open_restricted: unsafe extern "C" fn(
        path: *const c::c_char,
        flags: c::c_int,
        user_data: *mut c::c_void,
    ) -> c::c_int,
    pub close_restricted: unsafe extern "C" fn(fd: c::c_int, user_data: *mut c::c_void),
}

macro_rules! dynload {
    (
        $(
            fn $name:ident($($arg:ident: $ty:ty),* $(,)?) -> $ret:ty;
        )*
    ) => {
        $(
            #[expect(non_upper_case_globals)]
            pub static $name: LazyLock<Option<unsafe extern "C" fn($($arg: $ty),*) -> $ret>> = LazyLock::new(|| {
                unsafe {
                    Library::this()
                        .get(concat!(stringify!($name), "\0").as_bytes())
                        .ok()
                        .map(|sym| *sym)
                }
            });
        )*
    };
}

dynload! {
    fn libinput_device_get_id_bustype(device: *mut libinput_device) -> c::c_uint;

    fn libinput_event_tablet_pad_get_dial_delta_v120(event: *mut libinput_event_tablet_pad) -> f64;

    fn libinput_event_tablet_pad_get_dial_number(event: *mut libinput_event_tablet_pad) -> c::c_uint;

    fn libinput_device_tablet_pad_get_num_dials(device: *mut libinput_device) -> c::c_int;

    fn libinput_tablet_pad_mode_group_has_dial(
        group: *mut libinput_tablet_pad_mode_group,
        dial: c::c_uint,
    ) -> c::c_int;
}