/*
  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.
*/
#ifndef PLC4C_S7_READ_WRITE_COTP_PACKET_H_
#define PLC4C_S7_READ_WRITE_COTP_PACKET_H_

#include <stdbool.h>
#include <stdint.h>
#include <plc4c/spi/read_buffer.h>
#include <plc4c/spi/write_buffer.h>
#include <plc4c/utils/list.h>
#include "cotp_packet.h"
#include "s7_message.h"
#include "cotp_parameter.h"
#include "cotp_protocol_class.h"

#ifdef __cplusplus
extern "C" {
#endif


// Structure used to contain the discriminator values for discriminated types using this as a parent
struct plc4c_s7_read_write_cotp_packet_discriminator {
  uint8_t tpduCode;
};
typedef struct plc4c_s7_read_write_cotp_packet_discriminator plc4c_s7_read_write_cotp_packet_discriminator;

// Enum assigning each sub-type an individual id.
enum plc4c_s7_read_write_cotp_packet_type {
  plc4c_s7_read_write_cotp_packet_type_plc4c_s7_read_write_cotp_packet_data = 0,
  plc4c_s7_read_write_cotp_packet_type_plc4c_s7_read_write_cotp_packet_connection_request = 1,
  plc4c_s7_read_write_cotp_packet_type_plc4c_s7_read_write_cotp_packet_connection_response = 2,
  plc4c_s7_read_write_cotp_packet_type_plc4c_s7_read_write_cotp_packet_disconnect_request = 3,
  plc4c_s7_read_write_cotp_packet_type_plc4c_s7_read_write_cotp_packet_disconnect_response = 4,
  plc4c_s7_read_write_cotp_packet_type_plc4c_s7_read_write_cotp_packet_tpdu_error = 5};
typedef enum plc4c_s7_read_write_cotp_packet_type plc4c_s7_read_write_cotp_packet_type;

// Function to get the discriminator values for a given type.
plc4c_s7_read_write_cotp_packet_discriminator plc4c_s7_read_write_cotp_packet_get_discriminator(plc4c_s7_read_write_cotp_packet_type type);

struct plc4c_s7_read_write_cotp_packet {
  /* This is an abstract type so this property saves the type of this typed union */
  plc4c_s7_read_write_cotp_packet_type _type;
  /* Properties */
  union {
    struct { /* COTPPacketData */
      bool cotp_packet_data_eot : 1;
      unsigned int cotp_packet_data_tpdu_ref : 7;
    };
    struct { /* COTPPacketConnectionRequest */
      uint16_t cotp_packet_connection_request_destination_reference;
      uint16_t cotp_packet_connection_request_source_reference;
      plc4c_s7_read_write_cotp_protocol_class cotp_packet_connection_request_protocol_class;
    };
    struct { /* COTPPacketConnectionResponse */
      uint16_t cotp_packet_connection_response_destination_reference;
      uint16_t cotp_packet_connection_response_source_reference;
      plc4c_s7_read_write_cotp_protocol_class cotp_packet_connection_response_protocol_class;
    };
    struct { /* COTPPacketDisconnectRequest */
      uint16_t cotp_packet_disconnect_request_destination_reference;
      uint16_t cotp_packet_disconnect_request_source_reference;
      plc4c_s7_read_write_cotp_protocol_class cotp_packet_disconnect_request_protocol_class;
    };
    struct { /* COTPPacketDisconnectResponse */
      uint16_t cotp_packet_disconnect_response_destination_reference;
      uint16_t cotp_packet_disconnect_response_source_reference;
    };
    struct { /* COTPPacketTpduError */
      uint16_t cotp_packet_tpdu_error_destination_reference;
      uint8_t cotp_packet_tpdu_error_reject_cause;
    };
  };
  plc4c_list* parameters;
  plc4c_s7_read_write_s7_message* payload;
};
typedef struct plc4c_s7_read_write_cotp_packet plc4c_s7_read_write_cotp_packet;

// Create an empty NULL-struct
plc4c_s7_read_write_cotp_packet plc4c_s7_read_write_cotp_packet_null();

plc4c_return_code plc4c_s7_read_write_cotp_packet_parse(plc4c_spi_read_buffer* io, uint16_t cotpLen, plc4c_s7_read_write_cotp_packet** message);

plc4c_return_code plc4c_s7_read_write_cotp_packet_serialize(plc4c_spi_write_buffer* io, plc4c_s7_read_write_cotp_packet* message);

uint16_t plc4c_s7_read_write_cotp_packet_length_in_bytes(plc4c_s7_read_write_cotp_packet* message);

uint16_t plc4c_s7_read_write_cotp_packet_length_in_bits(plc4c_s7_read_write_cotp_packet* message);

#ifdef __cplusplus
}
#endif
#endif  // PLC4C_S7_READ_WRITE_COTP_PACKET_H_