/*
 *  Copyright (c) 2020, The OpenThread Authors.
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 *  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"
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 *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 */

#ifndef OT_CORE_RADIO_MAX_POWER_TABLE_HPP_
#define OT_CORE_RADIO_MAX_POWER_TABLE_HPP_

#include "core/radio/radio.hpp"
#include "openthread/platform/radio.h"

namespace ot {

class MaxPowerTable
{
public:
    static constexpr int8_t kPowerDefault = 30; ///< Default power 1 watt (30 dBm).

    MaxPowerTable(void) { memset(mPowerTable, kPowerDefault, sizeof(mPowerTable)); }

    /**
     * Gets the max allowed transmit power of channel @p aChannel.
     *
     * @param[in]  aChannel    The radio channel number.
     *
     * @returns The max supported transmit power in dBm.
     *
     */
    int8_t GetTransmitPower(uint8_t aChannel) const { return mPowerTable[aChannel - Radio::kChannelMin]; }

    /**
     * Sets the max allowed transmit power of channel @p aChannel.
     *
     * @param[in]  aChannel    The radio channel number.
     * @param[in]  aPower      The max supported transmit power in dBm.
     *
     */
    void SetTransmitPower(uint8_t aChannel, int8_t aPower) { mPowerTable[aChannel - Radio::kChannelMin] = aPower; }

    /**
     * Gets the supported channel masks.
     *
     */
    uint32_t GetSupportedChannelMask(void) const
    {
        uint32_t channelMask = 0;

        for (uint8_t i = Radio::kChannelMin; i <= Radio::kChannelMax; ++i)
        {
            if (mPowerTable[i - Radio::kChannelMin] != OT_RADIO_POWER_INVALID)
            {
                channelMask |= (1 << i);
            }
        }

        return channelMask;
    }

private:
    int8_t mPowerTable[Radio::kChannelMax - Radio::kChannelMin + 1];
};

} // namespace ot

#endif // OT_CORE_RADIO_MAX_POWER_TABLE_HPP_