#pragma once

#include <u.h>
#include <libn.h>
#include <wayland-server-core.h>

#define WLR_USE_UNSTABLE
#include <wlr/backend.h>
#include <wlr/render/wlr_renderer.h>

#include <wlr/types/wlr_cursor.h>
#include <wlr/types/wlr_compositor.h>
#include <wlr/types/wlr_data_device.h>
#include <wlr/types/wlr_input_device.h>
#include <wlr/types/wlr_keyboard.h>
#include <wlr/types/wlr_matrix.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_output_layout.h>
#include <wlr/types/wlr_pointer.h>
#include <wlr/types/wlr_seat.h>
#include <wlr/types/wlr_xcursor_manager.h>
#include <wlr/types/wlr_xdg_shell.h>

#include <wlr/util/log.h>

#include <xkbcommon/xkbcommon.h>

// -----------------------------------------------------------------------
// types

enum
{
    CursorPassthrough,
    CursorMove,
    CursorResize,
};

typedef struct Keyboard Keyboard;
typedef struct Client   Client;
typedef struct Monitor  Monitor;
typedef struct Server   Server;

struct Keyboard
{
    struct wl_list link;
    struct wlr_input_device *device;
    struct {
        struct wl_listener press;
        struct wl_listener modify;
    } event;
};

struct Client
{
    struct wl_list link;
    struct wlr_xdg_surface *xdg;
    struct {
        struct wl_listener map;
        struct wl_listener unmap;
        struct wl_listener destroy;
        struct wl_listener request_move;
        struct wl_listener request_resize;
    } event;
    int x, y, mapped;
};

struct Monitor
{
    struct wl_list link;
    struct wlr_output *output;
    struct {
        struct wl_listener render;
    } event;
};

struct Server
{
    struct wl_display   *display;
    struct wlr_backend  *backend;
    struct wlr_renderer *renderer;

    struct {
        struct wlr_xdg_shell *xdg;
    } shell;

    struct wl_list clients;

    struct {
        Client *client;
        double x, y;
        struct wlr_box box;
    } grab;
    uint32 resize;

    struct {
        struct wlr_output_layout *layout;
        struct wl_list            list;
    } output;

    struct {
        struct wlr_cursor          *dot;
        struct wlr_xcursor_manager *manager;
        int                         mode;
    } cursor;

    struct {
        struct wlr_seat *seat;
        struct wl_list   keyboards;
    } input;

    struct {
        struct wl_listener make_output;
        struct wl_listener make_input;
        struct wl_listener make_xdg_surface;

        struct wl_listener cursor_move;
        struct wl_listener cursor_move_abs;
        struct wl_listener cursor_button;
        struct wl_listener cursor_axis;
        struct wl_listener cursor_frame;

        struct wl_listener request_cursor;
        struct wl_listener request_set_selection;
    } event;
};

extern struct Server server;

// -----------------------------------------------------------------------
// functions

/* output.c */
void make_output(struct wl_listener *, void *);

/* xdg.c */
void make_xdg_surface(struct wl_listener *, void *);

/* input.c */
void make_input(struct wl_listener *, void *);

void cursor_axis(struct wl_listener *, void *);
void cursor_frame(struct wl_listener *, void *);
void cursor_button(struct wl_listener *, void *);
void cursor_move(struct wl_listener *, void *);
void cursor_move_abs(struct wl_listener *, void *);

void request_cursor(struct wl_listener *, void *);
void request_set_selection(struct wl_listener *, void *);

/* client.c */
void    focus(Client *client, struct wlr_surface *new);
Client* clientat(double, double, struct wlr_surface **, double *, double *);
int     clienthas(Client *, double, double, struct wlr_surface **, double *, double *);
void    setinteractive(Client *client, int mode, uint32 edges);