/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

#include <stdio.h>
#include <plc4c/spi/evaluation_helper.h>
#include "tpkt_packet.h"

// Code generated by code-generation. DO NOT EDIT.


// Constant values.
static const uint8_t PLC4C_S7_READ_WRITE_TPKT_PACKET_PROTOCOL_ID_const = 0x03;
uint8_t PLC4C_S7_READ_WRITE_TPKT_PACKET_PROTOCOL_ID() {
  return PLC4C_S7_READ_WRITE_TPKT_PACKET_PROTOCOL_ID_const;
}

// Parse function.
plc4c_return_code plc4c_s7_read_write_tpkt_packet_parse(plc4c_spi_read_buffer* readBuffer, plc4c_s7_read_write_tpkt_packet** _message) {
  uint16_t startPos = plc4c_spi_read_get_pos(readBuffer);
  uint16_t curPos;
  plc4c_return_code _res = OK;

  // Allocate enough memory to contain this data structure.
  (*_message) = malloc(sizeof(plc4c_s7_read_write_tpkt_packet));
  if(*_message == NULL) {
    return NO_MEMORY;
  }

  // Const Field (protocolId)
  uint8_t protocolId = 0;
  _res = plc4c_spi_read_unsigned_byte(readBuffer, 8, (uint8_t*) &protocolId);
  if(_res != OK) {
    return _res;
  }
  if(protocolId != PLC4C_S7_READ_WRITE_TPKT_PACKET_PROTOCOL_ID()) {
    return PARSE_ERROR;
    // throw new ParseException("Expected constant value " + PLC4C_S7_READ_WRITE_TPKT_PACKET_PROTOCOL_ID + " but got " + protocolId);
  }

  // Reserved Field (Compartmentalized so the "reserved" variable can't leak)
  {
    uint8_t _reserved = 0;
    _res = plc4c_spi_read_unsigned_byte(readBuffer, 8, (uint8_t*) &_reserved);
    if(_res != OK) {
      return _res;
    }
    if(_reserved != 0x00) {
      printf("Expected constant value '%d' but got '%d' for reserved field.", 0x00, _reserved);
    }
  }

  // Implicit Field (len) (Used for parsing, but it's value is not stored as it's implicitly given by the objects content)
  uint16_t len = 0;
  _res = plc4c_spi_read_unsigned_short(readBuffer, 16, (uint16_t*) &len);
  if(_res != OK) {
    return _res;
  }

  // Simple Field (payload)
  plc4c_s7_read_write_cotp_packet* payload;
  _res = plc4c_s7_read_write_cotp_packet_parse(readBuffer, (len) - (4), (void*) &payload);
  if(_res != OK) {
    return _res;
  }
  (*_message)->payload = payload;

  return OK;
}

plc4c_return_code plc4c_s7_read_write_tpkt_packet_serialize(plc4c_spi_write_buffer* writeBuffer, plc4c_s7_read_write_tpkt_packet* _message) {
  plc4c_return_code _res = OK;

  // Const Field (protocolId)
  plc4c_spi_write_unsigned_byte(writeBuffer, 8, PLC4C_S7_READ_WRITE_TPKT_PACKET_PROTOCOL_ID());

  // Reserved Field
  _res = plc4c_spi_write_unsigned_byte(writeBuffer, 8, 0x00);
  if(_res != OK) {
    return _res;
  }

  // Implicit Field (len) (Used for parsing, but it's value is not stored as it's implicitly given by the objects content)
  _res = plc4c_spi_write_unsigned_short(writeBuffer, 16, (plc4c_s7_read_write_cotp_packet_length_in_bytes(_message->payload)) + (4));
  if(_res != OK) {
    return _res;
  }

  // Simple Field (payload)
  _res = plc4c_s7_read_write_cotp_packet_serialize(writeBuffer, _message->payload);
  if(_res != OK) {
    return _res;
  }

  return OK;
}

uint16_t plc4c_s7_read_write_tpkt_packet_length_in_bytes(plc4c_s7_read_write_tpkt_packet* _message) {
  return plc4c_s7_read_write_tpkt_packet_length_in_bits(_message) / 8;
}

uint16_t plc4c_s7_read_write_tpkt_packet_length_in_bits(plc4c_s7_read_write_tpkt_packet* _message) {
  uint16_t lengthInBits = 0;

  // Const Field (protocolId)
  lengthInBits += 8;

  // Reserved Field (reserved)
  lengthInBits += 8;

  // Implicit Field (len)
  lengthInBits += 16;

  // Simple field (payload)
  lengthInBits += plc4c_s7_read_write_cotp_packet_length_in_bits(_message->payload);

  return lengthInBits;
}

