/*
 * Licensed to Open Source Radio Access Network(OS-RAN) Alliance and OAI
 * Software Alliance under one or more contributor license agreements. The
 * initial OpenXG series projects are derided from OAI projects, the files from
 * OAI projects are all in compliance with OAI Public License, Version 1.1.
 * codes and files developed from OpenXG projects and from OS-RAN Alliance
 * are all under OS-RAN licenses; you may not use this file except in compliance
 * with the license.  You may get a copy of the license at:
 *	http://www.openxg.org.cn/?falu_69.html
 * For more information about OpenXG, please contact:
 * contact@openxg.org.cn
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>

#include "TLVEncoder.h"
#include "TLVDecoder.h"
#include "_5GSTrackingAreaIdentity.h"

int encode__5gs_tracking_area_identity(
    _5GSTrackingAreaIdentity _5gstrackingareaidentity, uint8_t iei,
    uint8_t* buffer, uint32_t len) {
  uint32_t encoded = 0;
  CHECK_PDU_POINTER_AND_LENGTH_ENCODER(
      buffer, _5GS_TRACKING_AREA_IDENTITY_MINIMUM_LENGTH, len);

  if (iei > 0) {
    *buffer = iei;
    encoded++;
  }

  ENCODE_U8(
      buffer + encoded, (uint8_t)(_5gstrackingareaidentity.mcc & 0x00ff),
      encoded);
  ENCODE_U8(
      buffer + encoded,
      (uint8_t)((_5gstrackingareaidentity.mcc & 0x0f00) >> 8) |
          (uint8_t)((_5gstrackingareaidentity.mnc & 0x0f00) >> 4),
      encoded);
  ENCODE_U8(
      buffer + encoded, (uint8_t)(_5gstrackingareaidentity.mnc & 0x00ff),
      encoded);
  ENCODE_U32(
      buffer + encoded, _5gstrackingareaidentity.tac & 0x00ffffff, encoded);

  return encoded;
}

int decode__5gs_tracking_area_identity(
    _5GSTrackingAreaIdentity* _5gstrackingareaidentity, uint8_t iei,
    uint8_t* buffer, uint32_t len) {
  int decoded            = 0;
  uint8_t mcc_mnc_decode = 0;

  if (iei > 0) {
    CHECK_IEI_DECODER(iei, *buffer);
    decoded++;
  }

  DECODE_U8(buffer + decoded, mcc_mnc_decode, decoded);
  _5gstrackingareaidentity->mcc = 0x0000 | mcc_mnc_decode;
  DECODE_U8(buffer + decoded, mcc_mnc_decode, decoded);
  _5gstrackingareaidentity->mcc =
      _5gstrackingareaidentity->mcc | ((mcc_mnc_decode & 0x0f) << 8);
  _5gstrackingareaidentity->mnc = 0x0000 | ((mcc_mnc_decode & 0xf0) << 4);
  DECODE_U8(buffer + decoded, mcc_mnc_decode, decoded);
  _5gstrackingareaidentity->mnc =
      _5gstrackingareaidentity->mnc | mcc_mnc_decode;

  DECODE_U32(buffer + decoded, _5gstrackingareaidentity->tac, decoded);

  return decoded;
}
