/*
 * ebusd - daemon for communication with eBUS heating systems.
 * Copyright (C) 2014-2022 John Baier <ebusd@ebusd.eu>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef LIB_EBUS_RESULT_H_
#define LIB_EBUS_RESULT_H_

namespace ebusd {

/** @file lib/ebus/result.h
 * Functions, and constants related to execution results.
 *
 * The @a result_t codes defined here are used by many functions to emit the
 * result of the function call. Zero and positive values indicate success,
 * whereas negative values indicate failure.
 */

/** type for result code. */
enum result_t {
  RESULT_OK = 0,                    //!< success

  RESULT_CONTINUE = 1,              //!< more input data is needed
  RESULT_EMPTY = 2,                 //!< empty result

  RESULT_ERR_GENERIC_IO = -1,       //!< generic I/O error (usually fatal)
  RESULT_ERR_DEVICE = -2,           //!< generic device error (usually fatal)
  RESULT_ERR_SEND = -3,             //!< send error
  RESULT_ERR_ESC = -4,              //!< invalid escape sequence
  RESULT_ERR_TIMEOUT = -5,          //!< read timeout

  RESULT_ERR_NOTFOUND = -6,         //!< file/element not found or not readable
  RESULT_ERR_EOF = -7,              //!< end of input reached
  RESULT_ERR_INVALID_ARG = -8,      //!< invalid argument
  RESULT_ERR_INVALID_NUM = -9,      //!< invalid numeric argument
  RESULT_ERR_INVALID_ADDR = -10,    //!< invalid address
  RESULT_ERR_INVALID_POS = -11,     //!< invalid position
  RESULT_ERR_OUT_OF_RANGE = -12,    //!< argument value out of valid range
  RESULT_ERR_INVALID_PART = -13,    //!< invalid part type value
  RESULT_ERR_MISSING_ARG = -14,     //!< missing argument value
  RESULT_ERR_INVALID_LIST = -15,    //!< invalid value list
  RESULT_ERR_DUPLICATE = -16,       //!< duplicate entry
  RESULT_ERR_DUPLICATE_NAME = -17,  //!< duplicate entry (name)

  RESULT_ERR_BUS_LOST = -18,        //!< arbitration lost
  RESULT_ERR_ARB_RUNNING = -19,     //!< arbitration running
  RESULT_ERR_CRC = -20,             //!< CRC error
  RESULT_ERR_ACK = -21,             //!< ACK error
  RESULT_ERR_NAK = -22,             //!< NAK received

  RESULT_ERR_NO_SIGNAL = -23,       //!< no signal found on the bus
  RESULT_ERR_SYN = -24,             //!< SYN received instead of answer
  RESULT_ERR_SYMBOL = -25,          //!< wrong symbol received instead of sent symbol

  RESULT_ERR_NOTAUTHORIZED = -26    //!< not authorized for this action
};


/**
 * Return the string corresponding to the result code.
 * @param resultCode the result code (see RESULT_ constants).
 * @return the string corresponding to the result code.
 */
const char* getResultCode(result_t resultCode);

}  // namespace ebusd

#endif  // LIB_EBUS_RESULT_H_