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/**
 * @file
 *   This file implements storage of PIB attributes in nRF 802.15.4 radio driver.
 *
 */

#include "nrf_802154_pib.h"

#include <assert.h>
#include <stdbool.h>
#include <stdint.h>
#include <string.h>

#include "nrf_802154_config.h"
#include "nrf_802154_const.h"

typedef struct
{
    int8_t               tx_power;                             ///< Transmit power.
    uint8_t              pan_id[PAN_ID_SIZE];                  ///< Pan Id of this node.
    uint8_t              short_addr[SHORT_ADDRESS_SIZE];       ///< Short Address of this node.
    uint8_t              extended_addr[EXTENDED_ADDRESS_SIZE]; ///< Extended Address of this node.
    nrf_802154_cca_cfg_t cca;                                  ///< CCA mode and thresholds.
    bool                 promiscuous : 1;                      ///< Indicating if radio is in promiscuous mode.
    bool                 auto_ack    : 1;                      ///< Indicating if auto ACK procedure is enabled.
    bool                 pan_coord   : 1;                      ///< Indicating if radio is configured as the PAN coordinator.
    uint8_t              channel     : 5;                      ///< Channel on which the node receives messages.
} nrf_802154_pib_data_t;

// Static variables.
static nrf_802154_pib_data_t m_data; ///< Buffer containing PIB data.

void nrf_802154_pib_init(void)
{
    m_data.promiscuous = false;
    m_data.auto_ack    = true;
    m_data.pan_coord   = false;
    m_data.channel     = 11;

    memset(m_data.pan_id, 0xff, sizeof(m_data.pan_id));
    m_data.short_addr[0] = 0xfe;
    m_data.short_addr[1] = 0xff;
    memset(m_data.extended_addr, 0, sizeof(m_data.extended_addr));

    m_data.cca.mode           = NRF_802154_CCA_MODE_DEFAULT;
    m_data.cca.ed_threshold   = NRF_802154_CCA_ED_THRESHOLD_DEFAULT;
    m_data.cca.corr_threshold = NRF_802154_CCA_CORR_THRESHOLD_DEFAULT;
    m_data.cca.corr_limit     = NRF_802154_CCA_CORR_LIMIT_DEFAULT;
}

bool nrf_802154_pib_promiscuous_get(void)
{
    return m_data.promiscuous;
}

void nrf_802154_pib_promiscuous_set(bool enabled)
{
    m_data.promiscuous = enabled;
}

bool nrf_802154_pib_auto_ack_get(void)
{
    return m_data.auto_ack;
}

void nrf_802154_pib_auto_ack_set(bool enabled)
{
    m_data.auto_ack = enabled;
}

bool nrf_802154_pib_pan_coord_get(void)
{
    return m_data.pan_coord;
}

void nrf_802154_pib_pan_coord_set(bool enabled)
{
    m_data.pan_coord = enabled;
}

uint8_t nrf_802154_pib_channel_get(void)
{
    return m_data.channel;
}

void nrf_802154_pib_channel_set(uint8_t channel)
{
    m_data.channel = channel;
}

int8_t nrf_802154_pib_tx_power_get(void)
{
    return m_data.tx_power;
}

void nrf_802154_pib_tx_power_set(int8_t dbm)
{
    const int8_t allowed_values[] = {-40, -20, -16, -12, -8, -4, 0, 2, 3, 4, 5, 6, 7, 8};
    const int8_t highest_value    =
        allowed_values[(sizeof(allowed_values) / sizeof(allowed_values[0])) - 1];

    if (dbm > highest_value)
    {
        dbm = highest_value;
    }
    else
    {
        for (uint32_t i = 0; i < sizeof(allowed_values) / sizeof(allowed_values[0]); i++)
        {
            if (dbm <= allowed_values[i])
            {
                dbm = allowed_values[i];
                break;
            }
        }
    }

    m_data.tx_power = dbm;
}

const uint8_t * nrf_802154_pib_pan_id_get(void)
{
    return m_data.pan_id;
}

void nrf_802154_pib_pan_id_set(const uint8_t * p_pan_id)
{
    memcpy(m_data.pan_id, p_pan_id, PAN_ID_SIZE);
}

const uint8_t * nrf_802154_pib_extended_address_get(void)
{
    return m_data.extended_addr;
}

void nrf_802154_pib_extended_address_set(const uint8_t * p_extended_address)
{
    memcpy(m_data.extended_addr, p_extended_address, EXTENDED_ADDRESS_SIZE);
}

const uint8_t * nrf_802154_pib_short_address_get(void)
{
    return m_data.short_addr;
}

void nrf_802154_pib_short_address_set(const uint8_t * p_short_address)
{
    memcpy(m_data.short_addr, p_short_address, SHORT_ADDRESS_SIZE);
}

void nrf_802154_pib_cca_cfg_set(const nrf_802154_cca_cfg_t * p_cca_cfg)
{
    switch (p_cca_cfg->mode)
    {
        case NRF_RADIO_CCA_MODE_ED:
            m_data.cca.mode         = p_cca_cfg->mode;
            m_data.cca.ed_threshold = p_cca_cfg->ed_threshold;
            break;

        case NRF_RADIO_CCA_MODE_CARRIER:
            m_data.cca.mode           = p_cca_cfg->mode;
            m_data.cca.corr_threshold = p_cca_cfg->corr_threshold;
            m_data.cca.corr_limit     = p_cca_cfg->corr_limit;
            break;

        case NRF_RADIO_CCA_MODE_CARRIER_AND_ED:
        case NRF_RADIO_CCA_MODE_CARRIER_OR_ED:
            memcpy(&m_data.cca, p_cca_cfg, sizeof(m_data.cca));
            break;

        default:
            assert(false);
    }
}

void nrf_802154_pib_cca_cfg_get(nrf_802154_cca_cfg_t * p_cca_cfg)
{
    memcpy(p_cca_cfg, &m_data.cca, sizeof(m_data.cca));
}