/* SPDX-License-Identifier: GPL-3.0-or-later

 * Copyright © 2022 The TokTok team.

 */

#include "events_alloc.h"

#include <assert.h>

#include "../ccompat.h"

#include "../mem.h"

#include "../tox_event.h"

#include "../tox_events.h"

Tox_Events_State *tox_events_alloc(void *user_data)

{

    Tox_Events_State *state = (Tox_Events_State *)user_data;

    assert(state != nullptr);

    assert(state->mem != nullptr);

    if (state->events != nullptr) {

        // Already allocated.

        return state;

    }

    Tox_Events *events = (Tox_Events *)mem_alloc(state->mem, sizeof(Tox_Events));

    if (events == nullptr) {

        // It's still null => allocation failed.

        state->events = nullptr;

        state->error = TOX_ERR_EVENTS_ITERATE_MALLOC;

        return state;

    }

    *events = (Tox_Events) {

        nullptr

    };

    state->events = events;

    state->events->mem = state->mem;

    return state;

}

void tox_events_free(Tox_Events *events)

{

    if (events == nullptr) {

        return;

    }

    for (uint32_t i = 0; i < events->events_size; ++i) {

        tox_event_destruct(&events->events[i], events->mem);

    }

    mem_delete(events->mem, events->events);

    mem_delete(events->mem, events);

}

bool tox_events_add(Tox_Events *events, const Tox_Event *event)

{

    if (events->events_size == UINT32_MAX) {

        return false;

    }

    if (events->events_size == events->events_capacity) {

        const uint32_t new_events_capacity = events->events_capacity * 2 + 1;

        Tox_Event *new_events = (Tox_Event *)mem_vrealloc(

                    events->mem, events->events, new_events_capacity, sizeof(Tox_Event));

        if (new_events == nullptr) {

            return false;

        }

        events->events = new_events;

        events->events_capacity = new_events_capacity;

    }

    events->events[events->events_size] = *event;

    ++events->events_size;

    return true;

}