#include <cassert>

#include <cstddef>

#include <cstdint>

#include <vector>

#include "../../toxcore/tox.h"

#include "../../toxcore/tox_private.h"

#include "../support/public/fuzz_data.hh"

#include "../support/public/simulated_environment.hh"

namespace {

using tox::test::Fuzz_Data;

using tox::test::SimulatedEnvironment;

void TestSaveDataLoading(Fuzz_Data &input)

{

    Tox_Err_Options_New error_options;

    struct Tox_Options *tox_options = tox_options_new(&error_options);

    assert(tox_options != nullptr);

    assert(error_options == TOX_ERR_OPTIONS_NEW_OK);

    const std::size_t savedata_size = input.size();

    CONSUME_OR_RETURN(const uint8_t *savedata, input, savedata_size);

    tox_options_set_experimental_groups_persistence(tox_options, true);

    // pass test data to Tox

    tox_options_set_savedata_data(tox_options, savedata, savedata_size);

    tox_options_set_savedata_type(tox_options, TOX_SAVEDATA_TYPE_TOX_SAVE);

    Tox_Options_Testing tox_options_testing;

    SimulatedEnvironment env{12345};

    auto node = env.create_node(33445);

    tox_options_testing.operating_system = &node->system;

    Tox_Err_New_Testing err_testing;

    Tox *tox = tox_new_testing(tox_options, nullptr, &tox_options_testing, &err_testing);

    tox_options_free(tox_options);

    if (tox == nullptr) {

        // Tox save was invalid, we're finished here

        return;

    }

    // verify that the file can be saved again

    std::vector<uint8_t> new_savedata(tox_get_savedata_size(tox));

    tox_get_savedata(tox, new_savedata.data());

    tox_kill(tox);

}

}

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, std::size_t size);

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, std::size_t size)

{

    Fuzz_Data input{data, size};

    TestSaveDataLoading(input);

    return 0;  // Non-zero return values are reserved for future use.

}