/******************************************************************************
 *
 *  Copyright (C) 2014 Google, Inc.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at:
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 ******************************************************************************/

#define LOG_TAG "bt_btif_config_transcode"

#include <tinyxml2.h>

#include "osi/include/config.h"
#include "osi/include/log.h"

using namespace tinyxml2;

config_t* btif_config_transcode(const char* xml_filename) {
  XMLDocument document;
  int error = document.LoadFile(xml_filename);
  if (error != XML_SUCCESS) {
    LOG_ERROR(LOG_TAG, "%s unable to load XML file '%s': %d", __func__,
              xml_filename, error);
    return NULL;
  }

  XMLElement* rootElement = document.RootElement();
  if (!rootElement) {
    LOG_ERROR(LOG_TAG,
              "%s unable to find root element; assuming corrupted config file.",
              __func__);
    return NULL;
  }

  config_t* config = config_new_empty();
  if (!config) {
    LOG_ERROR(LOG_TAG, "%s unable to allocate config object.", __func__);
    return NULL;
  }

  for (XMLElement* i = rootElement->FirstChildElement(); i != NULL;
       i = i->NextSiblingElement())
    for (XMLElement* j = i->FirstChildElement(); j != NULL;
         j = j->NextSiblingElement()) {
      const char* section = j->Attribute("Tag");
      for (XMLElement* k = j->FirstChildElement(); k != NULL;
           k = k->NextSiblingElement()) {
        const char* key = k->Attribute("Tag");
        const char* value = k->GetText();
        if (section && key && value)
          config_set_string(config, section, key, value);
      }
    }

  return config;
}
