#include <stdlib.h>
#include <wlr/util/log.h>
#include <util/signal.h>
#include <wlr/types/wlr_relative_pointer_v1.h>
#include "wayland-util.h"
#include "wayland-server.h"
#include "relative-pointer-unstable-v1-protocol.h"

static const struct zwp_relative_pointer_manager_v1_interface relative_pointer_manager_v1_impl;
static const struct zwp_relative_pointer_v1_interface relative_pointer_v1_impl;


/* Callback functions
 */

static void relative_pointer_manager_v1_handle_destroy(struct wl_client *client,
		struct wl_resource *resource)
{
	wlr_log(WLR_DEBUG, "relative_pointer_manager_v1_handle_destroy called");
}


static void relative_pointer_manager_v1_handle_get_relative_pointer(struct wl_client *client,
		struct wl_resource *resource, uint32_t id, struct wl_resource *pointer)
{
	wlr_log(WLR_DEBUG, "relative_pointer_manager_v1_handle_get_relative_pointer called");
}


static void relative_pointer_v1_handle_destroy(struct wl_client *client,
		struct wl_resource *resource)
{
	wlr_log(WLR_DEBUG, "relative_pointer_v1_handle_destroy called");
}


static void relative_pointer_manager_v1_handle_resource_destroy(struct wl_resource *resource)
{
	wl_list_remove(wl_resource_get_link(resource));
	wlr_log(WLR_DEBUG, "relative_pointer_manager_v1_handle_resource_destroy called");
}


static void relative_pointer_manager_bind(struct wl_client *wl_client, void *data,
		uint32_t version, uint32_t id)
{
	struct wlr_relative_pointer_manager_v1 *relative_pointer_manager = data;

	struct wl_resource *wl_resource = wl_resource_create(wl_client,
		&zwp_relative_pointer_manager_v1_interface, version, id);

	if (wl_resource == NULL) {
		wl_client_post_no_memory(wl_client);
		return;
	}

	wl_list_insert(&relative_pointer_manager->resources, wl_resource_get_link(wl_resource));

	wl_resource_set_implementation(wl_resource, &relative_pointer_manager_v1_impl,
		relative_pointer_manager, relative_pointer_manager_v1_handle_resource_destroy);

	wlr_log(WLR_DEBUG, "relative_pointer_manager bound");
}


/* Implementations
 */

static const struct zwp_relative_pointer_manager_v1_interface relative_pointer_manager_v1_impl = {
	.destroy = relative_pointer_manager_v1_handle_destroy,
	.get_relative_pointer = relative_pointer_manager_v1_handle_get_relative_pointer,
};


static const struct zwp_relative_pointer_v1_interface relative_pointer_v1_impl = {
	.destroy = relative_pointer_v1_handle_destroy,
};


/* Public functions
 */

struct wlr_relative_pointer_manager_v1 *wlr_relative_pointer_v1_create(struct wl_display *display)
{
	struct wlr_relative_pointer_manager_v1 *relative_pointer_manager =
		calloc(1, sizeof(struct wlr_relative_pointer_manager_v1));

	if (relative_pointer_manager == NULL) {
		return NULL;
	}

	wl_list_init(&relative_pointer_manager->resources);

	wl_signal_init(&relative_pointer_manager->requests.destroy);
	wl_signal_init(&relative_pointer_manager->requests.get_relative_pointer);

	relative_pointer_manager->global = wl_global_create(display,
		&zwp_relative_pointer_manager_v1_interface, 1,
		relative_pointer_manager, relative_pointer_manager_bind);

	if (relative_pointer_manager->global == NULL) {
		free(relative_pointer_manager);
		return NULL;
	}

	wlr_log(WLR_DEBUG, "relative_pointer_v1 manager created");

	return relative_pointer_manager;
}


void wlr_relative_pointer_v1_destroy(struct wlr_relative_pointer_manager_v1 *relative_pointer_manager)
{
	if (relative_pointer_manager == NULL) {
		return;
	}

	struct wl_resource *resource;
	struct wl_resource *tmp_resource;
	wl_resource_for_each_safe(resource, tmp_resource, &relative_pointer_manager->resources) {
		wl_resource_destroy(resource);
	}

	wl_global_destroy(relative_pointer_manager->global);
	free(relative_pointer_manager);
}