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#include <json-c/json.h>
#include <stdio.h>
#include <ctype.h>
#include "log.h"
#include "sway/ipc-json.h"
#include "sway/container.h"
#include "sway/output.h"
#include "sway/input/input-manager.h"
#include "sway/input/seat.h"
#include <wlr/types/wlr_box.h>
#include <wlr/types/wlr_output.h>

json_object *ipc_json_get_version() {
	int major = 0, minor = 0, patch = 0;
	json_object *version = json_object_new_object();

	sscanf(SWAY_VERSION, "%u.%u.%u", &major, &minor, &patch);

	json_object_object_add(version, "human_readable", json_object_new_string(SWAY_VERSION));
	json_object_object_add(version, "variant", json_object_new_string("sway"));
	json_object_object_add(version, "major", json_object_new_int(major));
	json_object_object_add(version, "minor", json_object_new_int(minor));
	json_object_object_add(version, "patch", json_object_new_int(patch));

	return version;
}

static json_object *ipc_json_create_rect(swayc_t *c) {
	json_object *rect = json_object_new_object();

	json_object_object_add(rect, "x", json_object_new_int((int32_t)c->x));
	json_object_object_add(rect, "y", json_object_new_int((int32_t)c->y));
	json_object_object_add(rect, "width", json_object_new_int((int32_t)c->width));
	json_object_object_add(rect, "height", json_object_new_int((int32_t)c->height));

	return rect;
}

static void ipc_json_describe_root(swayc_t *root, json_object *object) {
	json_object_object_add(object, "type", json_object_new_string("root"));
	json_object_object_add(object, "layout", json_object_new_string("splith"));
}

static const char *ipc_json_get_output_transform(enum wl_output_transform transform) {
	switch (transform) {
	case WL_OUTPUT_TRANSFORM_NORMAL:
		return "normal";
	case WL_OUTPUT_TRANSFORM_90:
		return "90";
	case WL_OUTPUT_TRANSFORM_180:
		return "180";
	case WL_OUTPUT_TRANSFORM_270:
		return "270";
	case WL_OUTPUT_TRANSFORM_FLIPPED:
		return "flipped";
	case WL_OUTPUT_TRANSFORM_FLIPPED_90:
		return "flipped-90";
	case WL_OUTPUT_TRANSFORM_FLIPPED_180:
		return "flipped-180";
	case WL_OUTPUT_TRANSFORM_FLIPPED_270:
		return "flipped-270";
	}
	return NULL;
}

static void ipc_json_describe_output(swayc_t *container, json_object *object) {
	struct wlr_output *wlr_output = container->sway_output->wlr_output;
	json_object_object_add(object, "type", json_object_new_string("output"));
	json_object_object_add(object, "active", json_object_new_boolean(true));
	json_object_object_add(object, "primary", json_object_new_boolean(false));
	json_object_object_add(object, "layout", json_object_new_string("output"));
	json_object_object_add(object, "make", json_object_new_string(wlr_output->make));
	json_object_object_add(object, "model", json_object_new_string(wlr_output->model));
	json_object_object_add(object, "serial", json_object_new_string(wlr_output->serial));
	json_object_object_add(object, "scale", json_object_new_double(wlr_output->scale));
	json_object_object_add(object, "refresh", json_object_new_int(wlr_output->refresh));
	json_object_object_add(object, "transform",
		json_object_new_string(ipc_json_get_output_transform(wlr_output->transform)));
	// TODO WLR need to set "current_workspace" to the currently focused
	// workspace in a way that makes sense with multiseat
}

static void ipc_json_describe_workspace(swayc_t *workspace, json_object *object) {
	int num = (isdigit(workspace->name[0])) ? atoi(workspace->name) : -1;

	json_object_object_add(object, "num", json_object_new_int(num));
	json_object_object_add(object, "output", (workspace->parent) ? json_object_new_string(workspace->parent->name) : NULL);
	json_object_object_add(object, "type", json_object_new_string("workspace"));
}

static void ipc_json_describe_view(swayc_t *c, json_object *object) {
	json_object_object_add(object, "name", (c->name) ? json_object_new_string(c->name) : NULL);
}

json_object *ipc_json_describe_container(swayc_t *c) {
	if (!(sway_assert(c, "Container must not be null."))) {
		return NULL;
	}

	struct sway_seat *seat = sway_input_manager_get_default_seat(input_manager);
	bool focused = sway_seat_get_focus(seat) == c;

	json_object *object = json_object_new_object();

	json_object_object_add(object, "id", json_object_new_int((int)c->id));
	json_object_object_add(object, "name", (c->name) ? json_object_new_string(c->name) : NULL);
	json_object_object_add(object, "rect", ipc_json_create_rect(c));
	json_object_object_add(object, "focused", json_object_new_boolean(focused));

	switch (c->type) {
	case C_ROOT:
		ipc_json_describe_root(c, object);
		break;

	case C_OUTPUT:
		ipc_json_describe_output(c, object);
		break;

	case C_CONTAINER:
	case C_VIEW:
		ipc_json_describe_view(c, object);
		break;

	case C_WORKSPACE:
		ipc_json_describe_workspace(c, object);
		break;

	case C_TYPES:
	default:
		break;
	}

	return object;
}

json_object *ipc_json_describe_container_recursive(swayc_t *c) {
	json_object *object = ipc_json_describe_container(c);
	int i;

	json_object *children = json_object_new_array();
	if (c->type != C_VIEW && c->children) {
		for (i = 0; i < c->children->length; ++i) {
			json_object_array_add(children, ipc_json_describe_container_recursive(c->children->items[i]));
		}
	}
	json_object_object_add(object, "nodes", children);

	return object;
}

static const char *describe_device_type(struct sway_input_device *device) {
	switch (device->wlr_device->type) {
	case WLR_INPUT_DEVICE_POINTER:
		return "pointer";
	case WLR_INPUT_DEVICE_KEYBOARD:
		return "keyboard";
	case WLR_INPUT_DEVICE_TOUCH:
		return "touch";
	case WLR_INPUT_DEVICE_TABLET_TOOL:
		return "tablet_tool";
	case WLR_INPUT_DEVICE_TABLET_PAD:
		return "tablet_pad";
	}
	return "unknown";
}

json_object *ipc_json_describe_input(struct sway_input_device *device) {
	if (!(sway_assert(device, "Device must not be null"))) {
		return NULL;
	}

	json_object *object = json_object_new_object();

	json_object_object_add(object, "identifier",
		json_object_new_string(device->identifier));
	json_object_object_add(object, "name",
		json_object_new_string(device->wlr_device->name));
	json_object_object_add(object, "vendor",
		json_object_new_int(device->wlr_device->vendor));
	json_object_object_add(object, "product",
		json_object_new_int(device->wlr_device->product));
	json_object_object_add(object, "type",
		json_object_new_string(describe_device_type(device)));

	return object;
}