#include "json-loader.h"

static GValue *
handle_complex_types (JsonNode * node)
{

	return NULL;
}

static void
set_props (DbusmenuMenuitem * mi, JsonObject * node)
{
	if (node == NULL) return;

	GList * members = NULL;
	for (members = json_object_get_members(node); members != NULL; members = g_list_next(members)) {
		const gchar * member = members->data;

		if (!g_strcmp0(member, "id")) { continue; }
		if (!g_strcmp0(member, "submenu")) { continue; }

		JsonNode * lnode = json_object_get_member(node, member);

		if (JSON_NODE_TYPE(lnode) != JSON_NODE_VALUE) {
			GValue * value = handle_complex_types(lnode);
			if (value != NULL) {
				dbusmenu_menuitem_property_set_value(mi, member, value);
				g_value_unset(value);
				g_free(value);
			}
		} else {
			GValue value = {0};
			json_node_get_value(lnode, &value);
			dbusmenu_menuitem_property_set_value(mi, member, &value);
			g_value_unset(&value);
		}
	}

	return;
}

DbusmenuMenuitem *
dbusmenu_json_build_from_node (const JsonNode * cnode)
{
	JsonNode * node = (JsonNode *)cnode; /* To match the jsonglib API :( */

	if (node == NULL) return NULL;
	if (JSON_NODE_TYPE(node) != JSON_NODE_OBJECT) return NULL;

	JsonObject * layout = json_node_get_object(node);

	DbusmenuMenuitem * local = NULL;
	if (json_object_has_member(layout, "id")) {
		JsonNode * node = json_object_get_member(layout, "id");
		g_return_val_if_fail(JSON_NODE_TYPE(node) == JSON_NODE_VALUE, NULL);
		local = dbusmenu_menuitem_new_with_id(json_node_get_int(node));
	} else {
		local = dbusmenu_menuitem_new();
	}

	set_props(local, layout);
	
	if (json_object_has_member(layout, "submenu")) {
		JsonNode * node = json_object_get_member(layout, "submenu");
		g_return_val_if_fail(JSON_NODE_TYPE(node) == JSON_NODE_ARRAY, local);
		JsonArray * array = json_node_get_array(node);
		guint count;
		for (count = 0; count < json_array_get_length(array); count++) {
			DbusmenuMenuitem * child = dbusmenu_json_build_from_node(json_array_get_element(array, count));
			if (child != NULL) {
				dbusmenu_menuitem_child_append(local, child);
			}
		}
	}

	/* g_debug("Layout to menu return: 0x%X", (unsigned int)local); */
	return local;
}

DbusmenuMenuitem *
dbusmenu_json_build_from_file (const gchar * filename)
{
	JsonParser * parser = json_parser_new();

	GError * error = NULL;
	if (!json_parser_load_from_file(parser, filename, &error)) {
		g_warning("Failed parsing file %s because: %s", filename, error->message);
		g_error_free(error);
		return NULL;
	}

	JsonNode * root_node = json_parser_get_root(parser);
	if (JSON_NODE_TYPE(root_node) != JSON_NODE_OBJECT) {
		g_warning("Root node is not an object, fail.  It's an: %s", json_node_type_name(root_node));
		return NULL;
	}

	DbusmenuMenuitem * mi = dbusmenu_json_build_from_node(root_node);

	g_object_unref(parser);

	return mi;
}