#ifndef THREAD_DATASET_H
#define THREAD_DATASET_H

#include <string.h>

#include "openthread/dataset.h"
#include "openthread/ip6.h"

/*
 * TODO pro studenty:
 * - nastavte parametry site Thread podle README.md
 */
#define THREAD_NETWORK_NAME "TODO_NETWORK_NAME"
#define THREAD_CHANNEL 0
#define THREAD_PANID 0x0000
#define THREAD_MESH_LOCAL_PREFIX_STRING "fd00:0000:0000:0000"
#define THREAD_GATEWAY_STATIC_ADDR THREAD_MESH_LOCAL_PREFIX_STRING "::1"
#define THREAD_NODE_STATIC_ADDR THREAD_MESH_LOCAL_PREFIX_STRING "::10"
#define THREAD_GATEWAY_COAP_URL "coap://[" THREAD_GATEWAY_STATIC_ADDR "]:5683/sensor"

static inline void thread_dataset_get_active(otOperationalDataset *dataset)
{
    /*
     * TODO:
     * - doplnte Network Key podle README.md
     * - doplnte Extended PAN ID podle README.md
     * - zkontrolujte Mesh-Local prefix podle README.md
     */
    static const uint8_t network_key[OT_NETWORK_KEY_SIZE] = {
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    };
    static const uint8_t ext_pan_id[OT_EXT_PAN_ID_SIZE] = {
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    };
    static const uint8_t mesh_local_prefix[OT_MESH_LOCAL_PREFIX_SIZE] = {
        0xfd, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    };

    memset(dataset, 0, sizeof(*dataset));

    dataset->mActiveTimestamp.mSeconds = 1;
    dataset->mActiveTimestamp.mTicks = 0;
    dataset->mActiveTimestamp.mAuthoritative = true;
    memcpy(dataset->mNetworkKey.m8, network_key, sizeof(network_key));
    memcpy(dataset->mExtendedPanId.m8, ext_pan_id, sizeof(ext_pan_id));
    memcpy(dataset->mMeshLocalPrefix.m8, mesh_local_prefix, sizeof(mesh_local_prefix));
    memcpy(dataset->mNetworkName.m8, THREAD_NETWORK_NAME, sizeof(THREAD_NETWORK_NAME));
    dataset->mPanId = THREAD_PANID;
    dataset->mChannel = THREAD_CHANNEL;

    dataset->mComponents.mIsActiveTimestampPresent = true;
    dataset->mComponents.mIsNetworkKeyPresent = true;
    dataset->mComponents.mIsNetworkNamePresent = true;
    dataset->mComponents.mIsExtendedPanIdPresent = true;
    dataset->mComponents.mIsMeshLocalPrefixPresent = true;
    dataset->mComponents.mIsPanIdPresent = true;
    dataset->mComponents.mIsChannelPresent = true;
}

static inline otError thread_add_static_unicast_address(otInstance *instance, const char *address)
{
    otIp6Address parsed_address;
    otIp6InterfaceIdentifier iid;

    /* Studenti si zde mohou overit, jak se IPv6 adresa mapuje do IID. */
    if (otIp6AddressFromString(address, &parsed_address) != OT_ERROR_NONE) {
        return OT_ERROR_INVALID_ARGS;
    }

    memcpy(iid.mFields.m8, &parsed_address.mFields.m8[8], sizeof(iid.mFields.m8));
    return otIp6SetMeshLocalIid(instance, &iid);
}

static inline void thread_dataset_get_tlvs(otOperationalDatasetTlvs *dataset_tlvs)
{
    otOperationalDataset dataset;

    thread_dataset_get_active(&dataset);
    otDatasetConvertToTlvs(&dataset, dataset_tlvs);
}

#endif