/**
 * @file
 * @brief BACnetDeviceObjectPropertyReference structure, encode, decode
 * @author John Minack <minack@users.sourceforge.net>
 * @author Steve Karg <skarg@users.sourceforge.net>
 * @date 2008
 * @copyright SPDX-License-Identifier: GPL-2.0-or-later WITH GCC-exception-2.0
 */
#include <stdint.h>
#include <stdbool.h>
#include "bacnet/bacdcode.h"
#include "bacnet/npdu.h"
#include "bacnet/timestamp.h"
#include "bacnet/bacdevobjpropref.h"

/**
 * Encode a property reference for the device object.
 * Add an opening tag, encode the property and finally
 * add a closing tag as well.
 *
 * @param apdu Pointer to the encode buffer, or NULL for length
 * @param tag_number Tag number.
 * @param value Pointer to the object property reference, used for encoding.
 *
 * @return Bytes encoded or 0 on failure.
 */
int bacapp_encode_context_device_obj_property_ref(
    uint8_t *apdu,
    uint8_t tag_number,
    const BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *value)
{
    int len;
    int apdu_len = 0;

    if (value) {
        len = encode_opening_tag(apdu, tag_number);
        apdu_len += len;
        if (apdu) {
            apdu += len;
        }
        len = bacapp_encode_device_obj_property_ref(apdu, value);
        apdu_len += len;
        if (apdu) {
            apdu += len;
        }
        len = encode_closing_tag(apdu, tag_number);
        apdu_len += len;
    }

    return apdu_len;
}

/**
 * Encode a property reference for the device object.
 *
 * BACnetDeviceObjectPropertyReference ::= SEQUENCE {
 *  object-identifier       [0] BACnetObjectIdentifier,
 *  property-identifier     [1] BACnetPropertyIdentifier,
 *  property-array-index    [2] Unsigned OPTIONAL,
 *      -- used only with array datatype
 *      -- if omitted with an array then
 *      -- the entire array is referenced
 *  device-identifier       [3] BACnetObjectIdentifier OPTIONAL
 * }
 *
 * @param apdu  Pointer to the encode buffer, or NULL for length
 * @param value  Pointer to the object property reference,
 *               used for encoding.
 *
 * @return Bytes encoded.
 */
int bacapp_encode_device_obj_property_ref(
    uint8_t *apdu, const BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *value)
{
    int len;
    int apdu_len = 0;

    if (!value) {
        return apdu_len;
    }
    /* object-identifier       [0] BACnetObjectIdentifier */
    len = encode_context_object_id(
        apdu, 0, value->objectIdentifier.type,
        value->objectIdentifier.instance);
    apdu_len += len;
    if (apdu) {
        apdu += len;
    }
    /* property-identifier     [1] BACnetPropertyIdentifier */
    len = encode_context_enumerated(apdu, 1, value->propertyIdentifier);
    apdu_len += len;
    if (apdu) {
        apdu += len;
    }
    /* property-array-index    [2] Unsigned OPTIONAL */
    /* Check if needed before inserting */
    if (value->arrayIndex != BACNET_ARRAY_ALL) {
        len = encode_context_unsigned(apdu, 2, value->arrayIndex);
        apdu_len += len;
        if (apdu) {
            apdu += len;
        }
    }
    /* device-identifier       [3] BACnetObjectIdentifier OPTIONAL */
    /* Likewise, device id is optional so see if needed
     * (set type to BACNET_NO_DEV_TYPE or something other than OBJECT_DEVICE to
     * omit */
    if (value->deviceIdentifier.type == OBJECT_DEVICE) {
        len = encode_context_object_id(
            apdu, 3, value->deviceIdentifier.type,
            value->deviceIdentifier.instance);
        apdu_len += len;
    }

    return apdu_len;
}

/**
 * Decode a property reference of a device object.
 *
 * BACnetDeviceObjectPropertyReference ::= SEQUENCE {
 *  object-identifier       [0] BACnetObjectIdentifier,
 *  property-identifier     [1] BACnetPropertyIdentifier,
 *  property-array-index    [2] Unsigned OPTIONAL,
 *      -- used only with array datatype
 *      -- if omitted with an array then
 *      -- the entire array is referenced
 *  device-identifier       [3] BACnetObjectIdentifier OPTIONAL
 * }
 *
 * @param apdu  Pointer to the buffer containing the encoded value
 * @param apdu_size Size of the buffer containing the encoded value
 * @param value Pointer to the structure which contains the decoded value
 *
 * @return  number of bytes decoded, zero if tag mismatch,
 * or #BACNET_STATUS_ERROR (-1) if malformed
 */
int bacnet_device_object_property_reference_decode(
    const uint8_t *apdu,
    uint32_t apdu_size,
    BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *value)
{
    int apdu_len = 0;
    int len = 0;
    BACNET_UNSIGNED_INTEGER array_index = 0;
    BACNET_OBJECT_TYPE object_type = 0;
    uint32_t object_instance = 0;
    uint32_t property_identifier = 0;

    if (!apdu) {
        return BACNET_STATUS_ERROR;
    }
    /* object-identifier [0] BACnetObjectIdentifier */
    len = bacnet_object_id_context_decode(
        &apdu[apdu_len], apdu_size - apdu_len, 0, &object_type,
        &object_instance);
    if (len > 0) {
        apdu_len += len;
        if (value) {
            value->objectIdentifier.instance = object_instance;
            value->objectIdentifier.type = object_type;
        }
    } else {
        return len;
    }
    /* property-identifier [1] BACnetPropertyIdentifier */
    len = bacnet_enumerated_context_decode(
        &apdu[apdu_len], apdu_size - apdu_len, 1, &property_identifier);
    if (len > 0) {
        apdu_len += len;
        if (value) {
            value->propertyIdentifier = property_identifier;
        }
    } else {
        return BACNET_STATUS_ERROR;
    }
    /* property-array-index [2] Unsigned OPTIONAL */
    len = bacnet_unsigned_context_decode(
        &apdu[apdu_len], apdu_size - apdu_len, 2, &array_index);
    if (len > 0) {
        apdu_len += len;
        if (value) {
            value->arrayIndex = array_index;
        }
    } else if (len < 0) {
        return BACNET_STATUS_ERROR;
    } else {
        /* OPTIONAL - skip apdu_len increment */
        if (value) {
            value->arrayIndex = BACNET_ARRAY_ALL;
        }
    }
    /* device-identifier [3] BACnetObjectIdentifier OPTIONAL */
    len = bacnet_object_id_context_decode(
        &apdu[apdu_len], apdu_size - apdu_len, 3, &object_type,
        &object_instance);
    if (len > 0) {
        apdu_len += len;
        if (value) {
            value->deviceIdentifier.type = object_type;
            value->deviceIdentifier.instance = object_instance;
        }
    } else if (len < 0) {
        return BACNET_STATUS_ERROR;
    } else {
        /* OPTIONAL - skip apdu_len increment */
        if (value) {
            value->deviceIdentifier.type = BACNET_NO_DEV_TYPE;
            value->deviceIdentifier.instance = BACNET_NO_DEV_ID;
        }
    }

    return apdu_len;
}

/**
 * Decode the opening tag and the property reference of
 * an device object and check for the closing tag as well.
 *
 * @param apdu Pointer to the buffer containing the encoded value
 * @param apdu_size Size of the buffer containing the encoded value
 * @param tag_number  Tag number
 * @param value Pointer to the structure which contains the decoded value
 *
 * @return  number of bytes decoded, zero if tag mismatch,
 * or #BACNET_STATUS_ERROR (-1) if malformed
 */
int bacnet_device_object_property_reference_context_decode(
    const uint8_t *apdu,
    uint32_t apdu_size,
    uint8_t tag_number,
    BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *value)
{
    int apdu_len = 0;
    int len = 0;

    if (!apdu) {
        return BACNET_STATUS_ERROR;
    }
    if (bacnet_is_opening_tag_number(
            &apdu[apdu_len], apdu_size - apdu_len, tag_number, &len)) {
        apdu_len += len;
        len = bacnet_device_object_property_reference_decode(
            &apdu[apdu_len], apdu_size - apdu_len, value);
        if (len > 0) {
            apdu_len += len;
            if (bacnet_is_closing_tag_number(
                    &apdu[apdu_len], apdu_size - apdu_len, tag_number, &len)) {
                apdu_len += len;
            } else {
                return BACNET_STATUS_ERROR;
            }
        } else {
            return BACNET_STATUS_ERROR;
        }
    }

    return apdu_len;
}

/**
 * @brief Compare the complex data of value1 and value2
 * @param value1 - value 1 structure
 * @param value2 - value 2 structure
 * @return true if the values are the same
 */
bool bacnet_device_object_property_reference_same(
    const BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *value1,
    const BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *value2)
{
    bool status = false;

    if (value1 && value2) {
        if ((value1->arrayIndex == value2->arrayIndex) &&
            (value1->deviceIdentifier.instance ==
             value2->deviceIdentifier.instance) &&
            (value1->deviceIdentifier.type == value2->deviceIdentifier.type) &&
            (value1->objectIdentifier.instance ==
             value2->objectIdentifier.instance) &&
            (value1->objectIdentifier.type == value2->objectIdentifier.type) &&
            (value1->propertyIdentifier == value2->propertyIdentifier)) {
            status = true;
        }
    }

    return status;
}

/**
 * @brief Copy the complex data of src into dest
 * @param dest - destination structure
 * @param src - source structure
 * @return true if the values are the copied
 */
bool bacnet_device_object_property_reference_copy(
    BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *dest,
    const BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *src)
{
    bool status = false;

    if (dest && src) {
        dest->arrayIndex = src->arrayIndex;
        dest->deviceIdentifier.instance = src->deviceIdentifier.instance;
        dest->deviceIdentifier.type = src->deviceIdentifier.type;
        dest->objectIdentifier.instance = src->objectIdentifier.instance;
        dest->objectIdentifier.type = src->objectIdentifier.type;
        dest->propertyIdentifier = src->propertyIdentifier;
        status = true;
    }

    return status;
}

/**
 * Decode a property reference of a device object.
 *
 * BACnetDeviceObjectPropertyReference ::= SEQUENCE {
 *  object-identifier       [0] BACnetObjectIdentifier,
 *  property-identifier     [1] BACnetPropertyIdentifier,
 *  property-array-index    [2] Unsigned OPTIONAL,
 *      -- used only with array datatype
 *      -- if omitted with an array then
 *      -- the entire array is referenced
 *  device-identifier       [3] BACnetObjectIdentifier OPTIONAL
 * }
 *
 * @param apdu  Pointer to the buffer containing the data to decode.
 * @param value  Pointer to the object property reference,
 *               used to decode the data into.
 *
 * @return Bytes decoded or BACNET_STATUS_ERROR on failure.
 * @deprecated Use bacnet_device_object_property_reference_decode() instead
 */
int bacapp_decode_device_obj_property_ref(
    const uint8_t *apdu, BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *value)
{
    return bacnet_device_object_property_reference_decode(
        apdu, MAX_APDU, value);
}

/**
 * Decode the opening tag and the property reference of
 * an device object and check for the closing tag as well.
 *
 * @param apdu  Pointer to the buffer containing the data to decode.
 * @param tag_number  Tag number
 * @param value  Pointer to the object property reference,
 *               used to decode the data into.
 *
 * @return Bytes decoded or BACNET_STATUS_ERROR on failure.
 * @deprecated Use bacnet_device_object_property_reference_context_decode()
 * instead
 */
int bacapp_decode_context_device_obj_property_ref(
    const uint8_t *apdu,
    uint8_t tag_number,
    BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *value)
{
    return bacnet_device_object_property_reference_context_decode(
        apdu, MAX_APDU, tag_number, value);
}

/**
 * Encode the opening tag and the device object reference
 * and finally for the closing tag as well.
 *
 * BACnetDeviceObjectReference ::= SEQUENCE {
 *   device-identifier [0] BACnetObjectIdentifier OPTIONAL,
 *   object-identifier [1] BACnetObjectIdentifier
 * }
 *
 * @param apdu Pointer to the encode buffer, or NULL for length
 * @param tag_number Tag number
 * @param value Pointer to the device object reference, used to encode.
 *
 * @return Bytes encoded or 0 on failure.
 */
int bacapp_encode_context_device_obj_ref(
    uint8_t *apdu,
    uint8_t tag_number,
    const BACNET_DEVICE_OBJECT_REFERENCE *value)
{
    int len;
    int apdu_len = 0;

    if (value) {
        len = encode_opening_tag(apdu, tag_number);
        apdu_len += len;
        if (apdu) {
            apdu += len;
        }
        len = bacapp_encode_device_obj_ref(apdu, value);
        apdu_len += len;
        if (apdu) {
            apdu += len;
        }
        len = encode_closing_tag(apdu, tag_number);
        apdu_len += len;
    }

    return apdu_len;
}

/**
 * Encode the device object reference.
 *
 * BACnetDeviceObjectReference ::= SEQUENCE {
 *   device-identifier [0] BACnetObjectIdentifier OPTIONAL,
 *   object-identifier [1] BACnetObjectIdentifier
 * }
 *
 * @param apdu Pointer to the encode buffer, or NULL for length
 * @param value Pointer to the device object reference, used to encode.
 *
 * @return Bytes encoded or 0 on failure.
 */
int bacapp_encode_device_obj_ref(
    uint8_t *apdu, const BACNET_DEVICE_OBJECT_REFERENCE *value)
{
    int len;
    int apdu_len = 0;

    if (value) {
        /* device-identifier [0] BACnetObjectIdentifier OPTIONAL */
        /* Device id is optional so determine if needed and
           set type to BACNET_NO_DEV_TYPE or something other
           than OBJECT_DEVICE to omit */
        if (value->deviceIdentifier.type == OBJECT_DEVICE) {
            len = encode_context_object_id(
                apdu, 0, value->deviceIdentifier.type,
                value->deviceIdentifier.instance);
            apdu_len += len;
            if (apdu) {
                apdu += len;
            }
        }
        /* object-identifier [1] BACnetObjectIdentifier */
        len = encode_context_object_id(
            apdu, 1, value->objectIdentifier.type,
            value->objectIdentifier.instance);
        apdu_len += len;
    }

    return apdu_len;
}

/**
 * Decode the device object reference.
 *
 * BACnetDeviceObjectReference ::= SEQUENCE {
 *  device-identifier [0] BACnetObjectIdentifier OPTIONAL,
 *  object-identifier [1] BACnetObjectIdentifier
 * }
 *
 * @param apdu  Pointer to the buffer containing the encoded value
 * @param apdu_size Size of the buffer containing the encoded value
 * @param value Pointer to the structure containing the decoded value
 *
 * @return number of bytes decoded or BACNET_STATUS_ERROR on failure.
 */
int bacnet_device_object_reference_decode(
    const uint8_t *apdu,
    uint32_t apdu_size,
    BACNET_DEVICE_OBJECT_REFERENCE *value)
{
    int len;
    int apdu_len = 0;
    BACNET_OBJECT_TYPE object_type = 0;
    uint32_t object_instance = 0;

    if (!apdu) {
        return BACNET_STATUS_ERROR;
    }
    /* device-identifier [0] BACnetObjectIdentifier OPTIONAL */
    len = bacnet_object_id_context_decode(
        &apdu[apdu_len], apdu_size - apdu_len, 0, &object_type,
        &object_instance);
    if (len > 0) {
        apdu_len += len;
        if (value) {
            value->deviceIdentifier.instance = object_instance;
            value->deviceIdentifier.type = object_type;
        }
    } else if (len < 0) {
        return BACNET_STATUS_ERROR;
    } else {
        /* OPTIONAL - skip apdu_len increment */
        value->deviceIdentifier.type = BACNET_NO_DEV_TYPE;
        value->deviceIdentifier.instance = BACNET_NO_DEV_ID;
    }
    /* object-identifier [1] BACnetObjectIdentifier */
    len = bacnet_object_id_context_decode(
        &apdu[apdu_len], apdu_size - apdu_len, 1, &object_type,
        &object_instance);
    if (len > 0) {
        apdu_len += len;
        if (value) {
            value->objectIdentifier.instance = object_instance;
            value->objectIdentifier.type = object_type;
        }
    } else {
        return BACNET_STATUS_ERROR;
    }

    return apdu_len;
}

/**
 * Decode the context device object reference. Check for
 * an opening tag and a closing tag as well.
 *
 * @param apdu Pointer to the buffer containing the encoded value
 * @param apdu_size Size of the buffer containing the encoded value
 * @param tag_number Tag number
 * @param value Pointer to the structure containing the decoded value
 *
 * @return  number of bytes decoded, zero if wrong tag number,
 * or #BACNET_STATUS_ERROR (-1) if malformed
 */
int bacnet_device_object_reference_context_decode(
    const uint8_t *apdu,
    uint32_t apdu_size,
    uint8_t tag_number,
    BACNET_DEVICE_OBJECT_REFERENCE *value)
{
    int apdu_len = 0;
    int len = 0;

    if (!apdu) {
        return BACNET_STATUS_ERROR;
    }
    if (bacnet_is_opening_tag_number(
            &apdu[apdu_len], apdu_size - apdu_len, tag_number, &len)) {
        apdu_len += len;
        len = bacnet_device_object_reference_decode(
            &apdu[apdu_len], apdu_size - apdu_len, value);
        if (len > 0) {
            apdu_len += len;
            if (bacnet_is_closing_tag_number(
                    &apdu[apdu_len], apdu_size - apdu_len, tag_number, &len)) {
                apdu_len += len;
            } else {
                return BACNET_STATUS_ERROR;
            }
        } else {
            return BACNET_STATUS_ERROR;
        }
    }

    return apdu_len;
}

/**
 * @brief Compare the complex data of value1 and value2
 * @param value1 - value 1 structure
 * @param value2 - value 2 structure
 * @return true if the values are the same
 */
bool bacnet_device_object_reference_same(
    const BACNET_DEVICE_OBJECT_REFERENCE *value1,
    const BACNET_DEVICE_OBJECT_REFERENCE *value2)
{
    bool status = false;

    if (value1 && value2) {
        if ((value1->deviceIdentifier.instance ==
             value2->deviceIdentifier.instance) &&
            (value1->deviceIdentifier.type == value2->deviceIdentifier.type) &&
            (value1->objectIdentifier.instance ==
             value2->objectIdentifier.instance) &&
            (value1->objectIdentifier.type == value2->objectIdentifier.type)) {
            status = true;
        }
    }

    return status;
}

/**
 * @brief Copy the complex data from src into dest
 * @param dest - destination structure
 * @param src - source structure
 * @return true if the values are copied
 */
bool bacnet_device_object_reference_copy(
    BACNET_DEVICE_OBJECT_REFERENCE *dest,
    const BACNET_DEVICE_OBJECT_REFERENCE *src)
{
    bool status = false;

    if (dest && src) {
        dest->deviceIdentifier.instance = src->deviceIdentifier.instance;
        dest->deviceIdentifier.type = src->deviceIdentifier.type;
        dest->objectIdentifier.instance = src->objectIdentifier.instance;
        dest->objectIdentifier.type = src->objectIdentifier.type;
        status = true;
    }

    return status;
}

/**
 * Decode the device object reference.
 *
 * BACnetDeviceObjectReference ::= SEQUENCE {
 *  device-identifier [0] BACnetObjectIdentifier OPTIONAL,
 *  object-identifier [1] BACnetObjectIdentifier
 * }
 *
 * @param apdu  Pointer to the buffer containing the data to decode.
 * @param value  Pointer to the object object reference,
 *               that shall be decoded.
 *
 * @return Bytes decoded or BACNET_STATUS_ERROR on failure.
 * @deprecated Use bacnet_device_object_reference_decode() instead.
 */
int bacapp_decode_device_obj_ref(
    const uint8_t *apdu, BACNET_DEVICE_OBJECT_REFERENCE *value)
{
    return bacnet_device_object_reference_decode(apdu, MAX_APDU, value);
}

/**
 * Decode the context device object reference. Check for
 * an opening tag and a closing tag as well.
 *
 * @param apdu  Pointer to the buffer containing the data to decode.
 * @param tag_number  Tag number
 * @param value  Pointer to the context device object reference,
 *               that shall be decoded.
 *
 * @return Bytes decoded or BACNET_STATUS_ERROR on failure.
 * @deprecated Use bacnet_device_object_reference_context_decode() instead.
 */
int bacapp_decode_context_device_obj_ref(
    const uint8_t *apdu,
    uint8_t tag_number,
    BACNET_DEVICE_OBJECT_REFERENCE *value)
{
    return bacnet_device_object_reference_context_decode(
        apdu, MAX_APDU, tag_number, value);
}

/**
 * @brief Encode a BACnetObjectPropertyReference
 *
 *   BACnetObjectPropertyReference ::= SEQUENCE {
 *       object-identifier    [0] BACnetObjectIdentifier,
 *       property-identifier  [1] BACnetPropertyIdentifier,
 *       property-array-index [2] Unsigned OPTIONAL
 *       -- used only with array datatype
 *       -- if omitted with an array the entire array is referenced
 *   }
 *
 * @param apdu - the APDU buffer, or NULL for length
 * @param reference - BACnetObjectPropertyReference
 * @return length of the APDU buffer
 */
int bacapp_encode_obj_property_ref(
    uint8_t *apdu, const BACNET_OBJECT_PROPERTY_REFERENCE *reference)
{
    int len = 0;
    int apdu_len = 0;

    if (!reference) {
        return 0;
    }
    if (reference->object_identifier.type == OBJECT_NONE) {
        return 0;
    }
    len = encode_context_object_id(
        apdu, 0, reference->object_identifier.type,
        reference->object_identifier.instance);
    apdu_len += len;
    if (apdu) {
        apdu += len;
    }
    len = encode_context_enumerated(apdu, 1, reference->property_identifier);
    apdu_len += len;
    if (apdu) {
        apdu += len;
    }
    if (reference->property_array_index != BACNET_ARRAY_ALL) {
        len = encode_context_unsigned(apdu, 2, reference->property_array_index);
        apdu_len += len;
    }

    return apdu_len;
}

/**
 * @brief Encode the BACnetObjectPropertyReference as Context Tagged
 * @param apdu - the APDU buffer
 * @param tag_number - context tag number to be encoded
 * @param reference - BACnetObjectPropertyReference to encode
 * @return length of the APDU buffer
 */
int bacapp_encode_context_obj_property_ref(
    uint8_t *apdu,
    uint8_t tag_number,
    const BACNET_OBJECT_PROPERTY_REFERENCE *reference)
{
    int len = 0;
    int apdu_len = 0;

    if (reference && (reference->object_identifier.type == OBJECT_NONE)) {
        return 0;
    }
    len = encode_opening_tag(apdu, tag_number);
    apdu_len += len;
    if (apdu) {
        apdu += len;
    }
    len = bacapp_encode_obj_property_ref(apdu, reference);
    apdu_len += len;
    if (apdu) {
        apdu += len;
    }
    len = encode_closing_tag(apdu, tag_number);
    apdu_len += len;

    return apdu_len;
}

/**
 * @brief Decode a BACnetObjectPropertyReference
 *
 *   BACnetObjectPropertyReference ::= SEQUENCE {
 *       object-identifier    [0] BACnetObjectIdentifier,
 *       property-identifier  [1] BACnetPropertyIdentifier,
 *       property-array-index [2] Unsigned OPTIONAL
 *       -- used only with array datatype
 *       -- if omitted with an array the entire array is referenced
 *   }
 *
 * @param apdu  Pointer to the buffer containing the encoded value
 * @param apdu_size Size of the buffer containing the encoded value
 * @param reference - BACnetObjectPropertyReference to decode into
 * @return number of bytes decoded, zero if tag mismatch,
 *  or BACNET_STATUS_ERROR on failure.
 */
int bacapp_decode_obj_property_ref(
    const uint8_t *apdu,
    uint16_t apdu_size,
    BACNET_OBJECT_PROPERTY_REFERENCE *reference)
{
    int apdu_len = 0;
    int len = 0;
    BACNET_OBJECT_ID object_identifier;
    uint32_t property_identifier;
    BACNET_UNSIGNED_INTEGER unsigned_value;

    if (!apdu) {
        return BACNET_STATUS_ERROR;
    }
    /* object-identifier    [0] BACnetObjectIdentifier */
    len = bacnet_object_id_context_decode(
        &apdu[apdu_len], apdu_size - apdu_len, 0, &object_identifier.type,
        &object_identifier.instance);
    if (len > 0) {
        apdu_len += len;
    } else {
        return len;
    }
    /* property-identifier  [1] BACnetPropertyIdentifier */
    len = bacnet_enumerated_context_decode(
        &apdu[apdu_len], apdu_size - apdu_len, 1, &property_identifier);
    if (len > 0) {
        apdu_len += len;
    } else {
        return len;
    }
    if (reference) {
        reference->object_identifier.type = object_identifier.type;
        reference->object_identifier.instance = object_identifier.instance;
        reference->property_identifier =
            (BACNET_PROPERTY_ID)property_identifier;
    }
    /* property-array-index [2] Unsigned OPTIONAL */
    len = bacnet_unsigned_context_decode(
        &apdu[apdu_len], apdu_size - apdu_len, 2, &unsigned_value);
    if (len > 0) {
        apdu_len += len;
        if (unsigned_value > UINT32_MAX) {
            return BACNET_STATUS_ERROR;
        }
        if (reference) {
            reference->property_array_index = unsigned_value;
        }
    } else if (len < 0) {
        return BACNET_STATUS_ERROR;
    } else {
        /* OPTIONAL - skip apdu_len increment */
        if (reference) {
            reference->property_array_index = BACNET_ARRAY_ALL;
        }
    }

    return apdu_len;
}

/**
 * Decode the context object property reference. Check for
 * an opening tag and a closing tag as well.
 *
 * @param apdu  Pointer to the buffer containing the encoded value
 * @param apdu_size Size of the buffer containing the encoded value
 * @param tag_number  Tag number
 * @param value  Pointer to the structure that shall be decoded into.
 *
 * @return  number of bytes decoded, zero if wrong tag number,
 * or #BACNET_STATUS_ERROR (-1) if malformed
 */
int bacapp_decode_context_obj_property_ref(
    const uint8_t *apdu,
    uint16_t apdu_size,
    uint8_t tag_number,
    BACNET_OBJECT_PROPERTY_REFERENCE *value)
{
    int len = 0;
    int apdu_len = 0;

    if (!apdu) {
        return BACNET_STATUS_ERROR;
    }
    if (!bacnet_is_opening_tag_number(
            &apdu[apdu_len], apdu_size - apdu_len, tag_number, &len)) {
        return 0;
    }
    apdu_len += len;
    len = bacapp_decode_obj_property_ref(
        &apdu[apdu_len], apdu_size - apdu_len, value);
    if (len > 0) {
        apdu_len += len;
        if (bacnet_is_closing_tag_number(
                &apdu[apdu_len], apdu_size - apdu_len, tag_number, &len)) {
            apdu_len += len;
        } else {
            return BACNET_STATUS_ERROR;
        }
    } else {
        return BACNET_STATUS_ERROR;
    }

    return apdu_len;
}

/**
 * @brief Compare the complex data of value1 and value2
 * @param value1 - value 1 structure
 * @param value2 - value 2 structure
 * @return true if the values are the same
 */
bool bacnet_object_property_reference_same(
    const BACNET_OBJECT_PROPERTY_REFERENCE *value1,
    const BACNET_OBJECT_PROPERTY_REFERENCE *value2)
{
    bool status = false;

    if (value1 && value2) {
        if ((value1->property_identifier == value2->property_identifier) &&
            (value1->object_identifier.instance ==
             value2->object_identifier.instance) &&
            (value1->object_identifier.type ==
             value2->object_identifier.type)) {
            status = true;
        }
    }

    return status;
}

/**
 * @brief Copy the complex data from src to dest
 * @param dest - destination structure
 * @param src - source structure
 * @return true if the values are copied
 */
bool bacnet_object_property_reference_copy(
    BACNET_OBJECT_PROPERTY_REFERENCE *dest,
    const BACNET_OBJECT_PROPERTY_REFERENCE *src)
{
    bool status = false;

    if (src && dest) {
        dest->property_identifier = src->property_identifier;
        dest->object_identifier.instance = src->object_identifier.instance;
        dest->object_identifier.type = src->object_identifier.type;
        status = true;
    }

    return status;
}

/**
 * @brief Encode a BACnetPropertyReference into a buffer
 *
 *  BACnetPropertyReference ::= SEQUENCE {
 *      propertyIdentifier      [0] BACnetPropertyIdentifier,
 *      propertyArrayIndex      [1] Unsigned OPTIONAL
 *      -- used only with array datatype
 *      -- if omitted with an array the entire array is referenced
 *  }
 *
 * @param apdu - the APDU buffer, or NULL for length
 * @param reference - BACnetPropertyReference
 * @return length of the APDU buffer
 */
int bacnet_property_reference_encode(
    uint8_t *apdu, const struct BACnetPropertyReference *reference)
{
    int len = 0;
    int apdu_len = 0;

    if (!reference) {
        return 0;
    }
    len = encode_context_enumerated(apdu, 0, reference->property_identifier);
    apdu_len += len;
    if (apdu) {
        apdu += len;
    }
    if (reference->property_array_index != BACNET_ARRAY_ALL) {
        len = encode_context_unsigned(apdu, 1, reference->property_array_index);
        apdu_len += len;
    }

    return apdu_len;
}

/**
 * @brief Encode a BACnetPropertyReference into a buffer
 * BACnetPropertyReference ::= SEQUENCE {
 *      propertyIdentifier      [0] BACnetPropertyIdentifier,
 *      propertyArrayIndex      [1] Unsigned OPTIONAL
 *      -- used only with array datatype
 *      -- if omitted with an array the entire array is referenced
 * }
 *
 * @param apdu - the APDU buffer, or NULL for length
 * @param tag_number - context tag number to be encoded
 * @param reference - BACnetPropertyReference
 * @return length of the APDU buffer
 */
int bacnet_property_reference_context_encode(
    uint8_t *apdu,
    uint8_t tag_number,
    const struct BACnetPropertyReference *reference)
{
    int len = 0;
    int apdu_len = 0;

    len = encode_opening_tag(apdu, tag_number);
    apdu_len += len;
    if (apdu) {
        apdu += len;
    }

    len = bacnet_property_reference_encode(apdu, reference);
    apdu_len += len;
    if (apdu) {
        apdu += len;
    }
    len = encode_closing_tag(apdu, tag_number);
    apdu_len += len;

    return apdu_len;
}

/**
 * @brief Compare the complex data of value1 and value2
 * @param value1 - value 1 structure
 * @param value2 - value 2 structure
 * @return true if the values are the same
 */
bool bacnet_property_reference_same(
    const struct BACnetPropertyReference *value1,
    const struct BACnetPropertyReference *value2)
{
    bool status = false;

    if (value1 && value2) {
        if ((value1->property_identifier == value2->property_identifier) &&
            (value1->property_array_index == value2->property_array_index)) {
            status = true;
        }
    }

    return status;
}

/**
 * @brief Copy the complex data of src to dest
 * @param dest - destination structure
 * @param src - source structure
 */
void bacnet_property_reference_copy(
    struct BACnetPropertyReference *dest,
    const struct BACnetPropertyReference *src)
{
    if (dest && src) {
        dest->property_identifier = src->property_identifier;
        dest->property_array_index = src->property_array_index;
    }
}

/**
 * @brief Decode a BACnetPropertyReference from a buffer
 * @param apdu - the APDU buffer
 * @param apdu_size - the size of the APDU buffer
 * @param reference - BACnetPropertyReference to decode into
 * @return number of bytes decoded or BACNET_STATUS_ERROR on failure.
 */
int bacnet_property_reference_decode(
    const uint8_t *apdu,
    uint32_t apdu_size,
    struct BACnetPropertyReference *value)
{
    int apdu_len = 0;
    int len = 0;
    uint32_t property_identifier = 0;
    BACNET_UNSIGNED_INTEGER unsigned_value;

    if (!apdu) {
        return BACNET_STATUS_ERROR;
    }
    /* propertyIdentifier [0] BACnetPropertyIdentifier */
    len = bacnet_enumerated_context_decode(
        &apdu[apdu_len], apdu_size - apdu_len, 0, &property_identifier);
    if (len > 0) {
        apdu_len += len;
        if (value) {
            value->property_identifier = property_identifier;
        }
    } else {
        return len;
    }
    /* propertyArrayIndex [1] Unsigned OPTIONAL */
    len = bacnet_unsigned_context_decode(
        &apdu[apdu_len], apdu_size - apdu_len, 1, &unsigned_value);
    if (len > 0) {
        apdu_len += len;
        if (value) {
            value->property_array_index = unsigned_value;
        }
    } else {
        /* OPTIONAL - skip apdu_len increment */
        if (value) {
            value->property_array_index = BACNET_ARRAY_ALL;
        }
    }

    return apdu_len;
}

/**
 * @brief Decode the context property reference. Check for
 * an opening tag and a closing tag as well.
 * @param apdu - the APDU buffer
 * @param apdu_size - the size of the APDU buffer
 * @param tag_number - the tag number
 * @param value - BACnetPropertyReference to decode into
 * @return  number of bytes decoded, zero if wrong tag number,
 * or #BACNET_STATUS_ERROR (-1) if malformed
 */
int bacnet_property_reference_context_decode(
    const uint8_t *apdu,
    uint32_t apdu_size,
    uint8_t tag_number,
    struct BACnetPropertyReference *value)
{
    int len = 0;
    int apdu_len = 0;

    if (!apdu) {
        return BACNET_STATUS_ERROR;
    }
    if (!bacnet_is_opening_tag_number(
            &apdu[apdu_len], apdu_size - apdu_len, tag_number, &len)) {
        return 0;
    }
    apdu_len += len;
    len = bacnet_property_reference_decode(
        &apdu[apdu_len], apdu_size - apdu_len, value);
    if (len > 0) {
        apdu_len += len;
        if (bacnet_is_closing_tag_number(
                &apdu[apdu_len], apdu_size - apdu_len, tag_number, &len)) {
            apdu_len += len;
        } else {
            return BACNET_STATUS_ERROR;
        }
    } else {
        return BACNET_STATUS_ERROR;
    }

    return apdu_len;
}