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

 * Copyright © 2023-2026 The TokTok team.

 */

#include "events_alloc.h"

#include <assert.h>

#include <string.h>

#include "../attributes.h"

#include "../bin_pack.h"

#include "../bin_unpack.h"

#include "../ccompat.h"

#include "../mem.h"

#include "../tox.h"

#include "../tox_event.h"

#include "../tox_events.h"

#include "../tox_struct.h"

/*****************************************************

 *

 * :: struct and accessors

 *

 *****************************************************/

struct Tox_Event_Conference_Title {

    uint32_t conference_number;

    uint32_t peer_number;

    uint8_t *_Nullable title;

    uint32_t title_length;

};

static void tox_event_conference_title_set_conference_number(Tox_Event_Conference_Title *_Nonnull conference_title, uint32_t conference_number)

{

    assert(conference_title != nullptr);

    conference_title->conference_number = conference_number;

}

uint32_t tox_event_conference_title_get_conference_number(const Tox_Event_Conference_Title *conference_title)

{

    assert(conference_title != nullptr);

    return conference_title->conference_number;

}

static void tox_event_conference_title_set_peer_number(Tox_Event_Conference_Title *_Nonnull conference_title, uint32_t peer_number)

{

    assert(conference_title != nullptr);

    conference_title->peer_number = peer_number;

}

uint32_t tox_event_conference_title_get_peer_number(const Tox_Event_Conference_Title *conference_title)

{

    assert(conference_title != nullptr);

    return conference_title->peer_number;

}

static bool tox_event_conference_title_set_title(Tox_Event_Conference_Title *_Nonnull conference_title,

        const Memory *_Nonnull mem, const uint8_t *_Nullable title, uint32_t title_length)

{

    assert(conference_title != nullptr);

    if (conference_title->title != nullptr) {

        mem_delete(mem, conference_title->title);

        conference_title->title = nullptr;

        conference_title->title_length = 0;

    }

    if (title == nullptr) {

        assert(title_length == 0);

        return true;

    }

    if (title_length == 0) {

        conference_title->title = nullptr;

        conference_title->title_length = 0;

        return true;

    }

    uint8_t *title_copy = (uint8_t *)mem_balloc(mem, title_length);

    if (title_copy == nullptr) {

        return false;

    }

    memcpy(title_copy, title, title_length);

    conference_title->title = title_copy;

    conference_title->title_length = title_length;

    return true;

}

uint32_t tox_event_conference_title_get_title_length(const Tox_Event_Conference_Title *conference_title)

{

    assert(conference_title != nullptr);

    return conference_title->title_length;

}

const uint8_t *tox_event_conference_title_get_title(const Tox_Event_Conference_Title *conference_title)

{

    assert(conference_title != nullptr);

    return conference_title->title;

}

static void tox_event_conference_title_construct(Tox_Event_Conference_Title *_Nonnull conference_title)

{

    *conference_title = (Tox_Event_Conference_Title) {

        0

    };

}

static void tox_event_conference_title_destruct(Tox_Event_Conference_Title *_Nonnull conference_title, const Memory *_Nonnull mem)

{

    mem_delete(mem, conference_title->title);

}

bool tox_event_conference_title_pack(

    const Tox_Event_Conference_Title *event, Bin_Pack *bp)

{

    return bin_pack_array(bp, 3)

           && bin_pack_u32(bp, event->conference_number)

           && bin_pack_u32(bp, event->peer_number)

           && bin_pack_bin(bp, event->title, event->title_length);

}

static bool tox_event_conference_title_unpack_into(Tox_Event_Conference_Title *_Nonnull event, Bin_Unpack *_Nonnull bu)

{

    assert(event != nullptr);

    if (!bin_unpack_array_fixed(bu, 3, nullptr)) {

        return false;

    }

    return bin_unpack_u32(bu, &event->conference_number)

           && bin_unpack_u32(bu, &event->peer_number)

           && bin_unpack_bin(bu, &event->title, &event->title_length);

}

/*****************************************************

 *

 * :: new/free/add/get/size/unpack

 *

 *****************************************************/

const Tox_Event_Conference_Title *tox_event_get_conference_title(const Tox_Event *event)

{

    return event->type == TOX_EVENT_CONFERENCE_TITLE ? event->data.conference_title : nullptr;

}

Tox_Event_Conference_Title *tox_event_conference_title_new(const Memory *mem)

{

    Tox_Event_Conference_Title *const conference_title =

        (Tox_Event_Conference_Title *)mem_alloc(mem, sizeof(Tox_Event_Conference_Title));

    if (conference_title == nullptr) {

        return nullptr;

    }

    tox_event_conference_title_construct(conference_title);

    return conference_title;

}

void tox_event_conference_title_free(Tox_Event_Conference_Title *conference_title, const Memory *mem)

{

    if (conference_title != nullptr) {

        tox_event_conference_title_destruct(conference_title, mem);

    }

    mem_delete(mem, conference_title);

}

static Tox_Event_Conference_Title *_Nullable tox_events_add_conference_title(Tox_Events *_Nonnull events, const Memory *_Nonnull mem)

{

    Tox_Event_Conference_Title *const conference_title = tox_event_conference_title_new(mem);

    if (conference_title == nullptr) {

        return nullptr;

    }

    Tox_Event event;

    event.type = TOX_EVENT_CONFERENCE_TITLE;

    event.data.conference_title = conference_title;

    if (!tox_events_add(events, &event)) {

        tox_event_conference_title_free(conference_title, mem);

        return nullptr;

    }

    return conference_title;

}

bool tox_event_conference_title_unpack(

    Tox_Event_Conference_Title **event, Bin_Unpack *bu, const Memory *mem)

{

    assert(event != nullptr);

    assert(*event == nullptr);

    *event = tox_event_conference_title_new(mem);

    if (*event == nullptr) {

        return false;

    }

    return tox_event_conference_title_unpack_into(*event, bu);

}

static Tox_Event_Conference_Title *_Nullable tox_event_conference_title_alloc(Tox_Events_State *_Nonnull state)

{

    if (state->events == nullptr) {

        return nullptr;

    }

    Tox_Event_Conference_Title *conference_title = tox_events_add_conference_title(state->events, state->mem);

    if (conference_title == nullptr) {

        state->error = TOX_ERR_EVENTS_ITERATE_MALLOC;

        return nullptr;

    }

    return conference_title;

}

/*****************************************************

 *

 * :: event handler

 *

 *****************************************************/

void tox_events_handle_conference_title(

    Tox *_Nonnull tox,

    uint32_t conference_number,

    uint32_t peer_number,

    const uint8_t *_Nullable title, size_t length,

    void *_Nullable user_data)

{

    Tox_Events_State *state = tox_events_alloc(user_data);

    Tox_Event_Conference_Title *conference_title = tox_event_conference_title_alloc(state);

    if (conference_title == nullptr) {

        return;

    }

    tox_event_conference_title_set_conference_number(conference_title, conference_number);

    tox_event_conference_title_set_peer_number(conference_title, peer_number);

    if (!tox_event_conference_title_set_title(conference_title, state->mem, title, length)) {

        tox_event_conference_title_free(conference_title, state->mem);

        state->error = TOX_ERR_EVENTS_ITERATE_MALLOC;

        return;

    }

}

void tox_events_handle_conference_title_dispatch(Tox *tox, const Tox_Event_Conference_Title *event, void *user_data)

{

    if (tox->conference_title_callback == nullptr) {

        return;

    }

    tox_unlock(tox);

    tox->conference_title_callback(tox, event->conference_number, event->peer_number, event->title, event->title_length, user_data);

    tox_lock(tox);

}