/*
 * This file is part of matrix-glib-sdk
 *
 * matrix-glib-sdk is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation, either
 * version 3 of the License, or (at your option) any later version.
 *
 * matrix-glib-sdk is distributed in the hope that it will be
 * useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with matrix-glib-sdk. If not, see
 * <http://www.gnu.org/licenses/>.
 */

#include "utils.h"
#include "matrix-types.h"

static void
deep_copy_object(JsonObject *object,
                 const gchar *member_name,
                 JsonNode *member_node,
                 JsonObject *new_obj)
{
    json_object_set_member(new_obj,
                           member_name,
                           _json_node_deep_copy((const JsonNode *)member_node));
}

static void
deep_copy_array(JsonArray *array,
                guint idx,
                JsonNode *element_node,
                JsonArray *new_array)
{
    json_array_add_element(new_array,
                           _json_node_deep_copy((const JsonNode *)element_node));
}

JsonNode *
_json_node_deep_copy(const JsonNode *node)
{
    JsonNode *ret;

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

    ret = json_node_new(JSON_NODE_TYPE((JsonNode *)node));

    switch (JSON_NODE_TYPE((JsonNode *)node)) {
        case JSON_NODE_OBJECT:
        {
            JsonObject *new_obj = json_object_new();

            json_object_foreach_member(json_node_get_object((JsonNode *)node),
                                       (JsonObjectForeach)deep_copy_object,
                                       new_obj);

            json_node_set_object(ret, new_obj);

            break;
        }

        case JSON_NODE_ARRAY:
        {
            JsonArray *new_ary = json_array_new();

            json_array_foreach_element(json_node_get_array((JsonNode *)node),
                                       (JsonArrayForeach)deep_copy_array,
                                       new_ary);

            json_node_set_array(ret, new_ary);

            break;
        }

        case JSON_NODE_VALUE:
        {
            GValue val = G_VALUE_INIT;

            json_node_get_value((JsonNode *)node, &val);
            json_node_set_value(ret, &val);

            g_value_unset(&val);

            break;
        }

        case JSON_NODE_NULL:
            break;
    }

    return ret;
}