#include "gattc_cache_manager.h"

#include <string.h>
#include "ble_gap.h"
#include "ble_conn_state.h"
#include "peer_manager_types.h"
#include "peer_database.h"
#include "id_manager.h"


#define MAX_SIMUL_SEC_PROCEDURES 2


#define VERIFY_MODULE_INITIALIZED()     \
do                                      \
{                                       \
    if (m_gccm.evt_handler == NULL)     \
    {                                   \
        return NRF_ERROR_INVALID_STATE; \
    }                                   \
} while(0)

#define VERIFY_PARAM_NOT_NULL(param)    \
do                                      \
{                                       \
    if (param == NULL)                  \
    {                                   \
        return NRF_ERROR_NULL;          \
    }                                   \
} while(0)



typedef struct
{
    gccm_evt_handler_t  evt_handler;
} gccm_t;

static gccm_t m_gccm;

static void internal_state_reset(gccm_t * gccm)
{
    memset(gccm, 0, sizeof(gccm_t));
}


/**@brief Event handler for events from the peer_database module.
 *
 * @param[in]  p_event The event that has happend with peer id and flags.
 */
static void pdb_evt_handler(pdb_evt_t const * p_event)
{
    gccm_evt_t gccm_evt;
    gccm_evt.evt_id  = GCCM_EVT_REMOTE_DB_STORED;
    gccm_evt.peer_id = p_event->peer_id;
    m_gccm.evt_handler(&gccm_evt);
}


ret_code_t gccm_init(gccm_evt_handler_t evt_handler)
{
    ret_code_t err_code;
    if (evt_handler == NULL)
    {
        err_code = NRF_ERROR_NULL;
    }
    else
    {
        err_code = pdb_register(pdb_evt_handler);
        if (err_code == NRF_SUCCESS)
        {
            internal_state_reset(&m_gccm);
            m_gccm.evt_handler = evt_handler;
        }
    }
    return err_code;
}


ret_code_t gccm_remote_db_store(pm_peer_id_t peer_id, pm_peer_data_remote_gatt_db_t * p_remote_db)
{
    VERIFY_MODULE_INITIALIZED();
    VERIFY_PARAM_NOT_NULL(p_remote_db);

    // Initialize the peer_data
    pm_peer_data_const_t peer_data;
    memset(&peer_data, 0, sizeof(peer_data));
    peer_data.data_type = PM_PEER_DATA_ID_GATT_REMOTE;
    peer_data.data.p_remote_gatt_db = p_remote_db;

    return pdb_raw_store(peer_id, &peer_data, NULL);
}


ret_code_t gccm_remote_db_retrieve(pm_peer_id_t peer_id, pm_peer_data_remote_gatt_db_t * p_remote_db)
{
    VERIFY_MODULE_INITIALIZED();
    VERIFY_PARAM_NOT_NULL(p_remote_db);

    // Initialize the peer_data
    pm_peer_data_t peer_data;
    memset(&peer_data, 0, sizeof(peer_data));
    peer_data.data_type = PM_PEER_DATA_ID_GATT_REMOTE;
    peer_data.data.p_remote_gatt_db = p_remote_db;

    return pdb_raw_read(peer_id, PM_PEER_DATA_ID_GATT_REMOTE, &peer_data);
}