/* 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_pack.h"

#include "../tox_struct.h"

#include "../tox_unpack.h"

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

 *

 * :: struct and accessors

 *

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

struct Tox_Event_Conference_Invite {

    uint32_t friend_number;

    Tox_Conference_Type type;

    uint8_t *_Nullable cookie;

    uint32_t cookie_length;

};

static void tox_event_conference_invite_set_friend_number(Tox_Event_Conference_Invite *_Nonnull conference_invite, uint32_t friend_number)

{

    assert(conference_invite != nullptr);

    conference_invite->friend_number = friend_number;

}

uint32_t tox_event_conference_invite_get_friend_number(const Tox_Event_Conference_Invite *conference_invite)

{

    assert(conference_invite != nullptr);

    return conference_invite->friend_number;

}

static void tox_event_conference_invite_set_type(Tox_Event_Conference_Invite *_Nonnull conference_invite, Tox_Conference_Type type)

{

    assert(conference_invite != nullptr);

    conference_invite->type = type;

}

Tox_Conference_Type tox_event_conference_invite_get_type(const Tox_Event_Conference_Invite *conference_invite)

{

    assert(conference_invite != nullptr);

    return conference_invite->type;

}

static bool tox_event_conference_invite_set_cookie(Tox_Event_Conference_Invite *_Nonnull conference_invite,

        const Memory *_Nonnull mem, const uint8_t *_Nullable cookie, uint32_t cookie_length)

{

    assert(conference_invite != nullptr);

    if (conference_invite->cookie != nullptr) {

        mem_delete(mem, conference_invite->cookie);

        conference_invite->cookie = nullptr;

        conference_invite->cookie_length = 0;

    }

    if (cookie == nullptr) {

        assert(cookie_length == 0);

        return true;

    }

    if (cookie_length == 0) {

        conference_invite->cookie = nullptr;

        conference_invite->cookie_length = 0;

        return true;

    }

    uint8_t *cookie_copy = (uint8_t *)mem_balloc(mem, cookie_length);

    if (cookie_copy == nullptr) {

        return false;

    }

    memcpy(cookie_copy, cookie, cookie_length);

    conference_invite->cookie = cookie_copy;

    conference_invite->cookie_length = cookie_length;

    return true;

}

uint32_t tox_event_conference_invite_get_cookie_length(const Tox_Event_Conference_Invite *conference_invite)

{

    assert(conference_invite != nullptr);

    return conference_invite->cookie_length;

}

const uint8_t *tox_event_conference_invite_get_cookie(const Tox_Event_Conference_Invite *conference_invite)

{

    assert(conference_invite != nullptr);

    return conference_invite->cookie;

}

static void tox_event_conference_invite_construct(Tox_Event_Conference_Invite *_Nonnull conference_invite)

{

    *conference_invite = (Tox_Event_Conference_Invite) {

        0

    };

}

static void tox_event_conference_invite_destruct(Tox_Event_Conference_Invite *_Nonnull conference_invite, const Memory *_Nonnull mem)

{

    mem_delete(mem, conference_invite->cookie);

}

bool tox_event_conference_invite_pack(

    const Tox_Event_Conference_Invite *event, Bin_Pack *bp)

{

    return bin_pack_array(bp, 3)

           && bin_pack_u32(bp, event->friend_number)

           && tox_conference_type_pack(event->type, bp)

           && bin_pack_bin(bp, event->cookie, event->cookie_length);

}

static bool tox_event_conference_invite_unpack_into(Tox_Event_Conference_Invite *_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->friend_number)

           && tox_conference_type_unpack(&event->type, bu)

           && bin_unpack_bin(bu, &event->cookie, &event->cookie_length);

}

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

 *

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

 *

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

const Tox_Event_Conference_Invite *tox_event_get_conference_invite(const Tox_Event *event)

{

    return event->type == TOX_EVENT_CONFERENCE_INVITE ? event->data.conference_invite : nullptr;

}

Tox_Event_Conference_Invite *tox_event_conference_invite_new(const Memory *mem)

{

    Tox_Event_Conference_Invite *const conference_invite =

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

    if (conference_invite == nullptr) {

        return nullptr;

    }

    tox_event_conference_invite_construct(conference_invite);

    return conference_invite;

}

void tox_event_conference_invite_free(Tox_Event_Conference_Invite *conference_invite, const Memory *mem)

{

    if (conference_invite != nullptr) {

        tox_event_conference_invite_destruct(conference_invite, mem);

    }

    mem_delete(mem, conference_invite);

}

static Tox_Event_Conference_Invite *_Nullable tox_events_add_conference_invite(Tox_Events *_Nonnull events, const Memory *_Nonnull mem)

{

    Tox_Event_Conference_Invite *const conference_invite = tox_event_conference_invite_new(mem);

    if (conference_invite == nullptr) {

        return nullptr;

    }

    Tox_Event event;

    event.type = TOX_EVENT_CONFERENCE_INVITE;

    event.data.conference_invite = conference_invite;

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

        tox_event_conference_invite_free(conference_invite, mem);

        return nullptr;

    }

    return conference_invite;

}

bool tox_event_conference_invite_unpack(

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

{

    assert(event != nullptr);

    assert(*event == nullptr);

    *event = tox_event_conference_invite_new(mem);

    if (*event == nullptr) {

        return false;

    }

    return tox_event_conference_invite_unpack_into(*event, bu);

}

static Tox_Event_Conference_Invite *_Nullable tox_event_conference_invite_alloc(Tox_Events_State *_Nonnull state)

{

    if (state->events == nullptr) {

        return nullptr;

    }

    Tox_Event_Conference_Invite *conference_invite = tox_events_add_conference_invite(state->events, state->mem);

    if (conference_invite == nullptr) {

        state->error = TOX_ERR_EVENTS_ITERATE_MALLOC;

        return nullptr;

    }

    return conference_invite;

}

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

 *

 * :: event handler

 *

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

void tox_events_handle_conference_invite(

    Tox *_Nonnull tox,

    uint32_t friend_number,

    Tox_Conference_Type type,

    const uint8_t *_Nullable cookie, size_t length,

    void *_Nullable user_data)

{

    Tox_Events_State *state = tox_events_alloc(user_data);

    Tox_Event_Conference_Invite *conference_invite = tox_event_conference_invite_alloc(state);

    if (conference_invite == nullptr) {

        return;

    }

    tox_event_conference_invite_set_friend_number(conference_invite, friend_number);

    tox_event_conference_invite_set_type(conference_invite, type);

    if (!tox_event_conference_invite_set_cookie(conference_invite, state->mem, cookie, length)) {

        tox_event_conference_invite_free(conference_invite, state->mem);

        state->error = TOX_ERR_EVENTS_ITERATE_MALLOC;

        return;

    }

}

void tox_events_handle_conference_invite_dispatch(Tox *tox, const Tox_Event_Conference_Invite *event, void *user_data)

{

    if (tox->conference_invite_callback == nullptr) {

        return;

    }

    tox_unlock(tox);

    tox->conference_invite_callback(tox, event->friend_number, event->type, event->cookie, event->cookie_length, user_data);

    tox_lock(tox);

}