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 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. Neither the name of the copyright holder nor the
 *     names of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 */

/**
 * @file
 *   This file includes definitions for Extended PAN ID.
 */

#ifndef OT_CORE_MESHCOP_EXTENDED_PANID_HPP_
#define OT_CORE_MESHCOP_EXTENDED_PANID_HPP_

#include "openthread-core-config.h"

#include <openthread/dataset.h>

#include "common/as_core_type.hpp"
#include "common/clearable.hpp"
#include "common/equatable.hpp"
#include "common/string.hpp"

namespace ot {
namespace MeshCoP {

/**
 * Represents an Extended PAN Identifier.
 */
OT_TOOL_PACKED_BEGIN
class ExtendedPanId : public otExtendedPanId, public Equatable<ExtendedPanId>, public Clearable<ExtendedPanId>
{
public:
    static constexpr uint16_t kInfoStringSize = 17; ///< Max chars for the info string (`ToString()`).

    /**
     * Defines the fixed-length `String` object returned from `ToString()`.
     */
    typedef String<kInfoStringSize> InfoString;

    /**
     * Converts an address to a string.
     *
     * @returns An `InfoString` containing the string representation of the Extended PAN Identifier.
     */
    InfoString ToString(void) const;

    /**
     * Generates a cryptographically secure random sequence to populate the Extended PAN Identifier.
     *
     * @retval kErrorNone     Successfully generated a random Extended PAN ID.
     * @retval kErrorFailed   Failed to generate random sequence.
     */
    Error GenerateRandom(void);

} OT_TOOL_PACKED_END;

} // namespace MeshCoP

DefineCoreType(otExtendedPanId, MeshCoP::ExtendedPanId);

} // namespace ot

#endif // OT_CORE_MESHCOP_EXTENDED_PANID_HPP_
