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

 * Copyright © 2023-2024 The TokTok team.

 */

#include "events_alloc.h"

#include <assert.h>

#include <stdlib.h>

#include <string.h>

#include "../bin_pack.h"

#include "../bin_unpack.h"

#include "../ccompat.h"

#include "../mem.h"

#include "../tox.h"

#include "../tox_events.h"

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

 *

 * :: struct and accessors

 *

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

struct Tox_Event_Group_Invite {

    uint32_t friend_number;

    uint8_t *invite_data;

    uint32_t invite_data_length;

    uint8_t *group_name;

    uint32_t group_name_length;

};

non_null()

static void tox_event_group_invite_set_friend_number(Tox_Event_Group_Invite *group_invite,

        uint32_t friend_number)

{

    assert(group_invite != nullptr);

    group_invite->friend_number = friend_number;

}

uint32_t tox_event_group_invite_get_friend_number(const Tox_Event_Group_Invite *group_invite)

{

    assert(group_invite != nullptr);

    return group_invite->friend_number;

}

non_null(1) nullable(2)

static bool tox_event_group_invite_set_invite_data(Tox_Event_Group_Invite *group_invite,

        const uint8_t *invite_data, uint32_t invite_data_length)

{

    assert(group_invite != nullptr);

    if (group_invite->invite_data != nullptr) {

        free(group_invite->invite_data);

        group_invite->invite_data = nullptr;

        group_invite->invite_data_length = 0;

    }

    if (invite_data == nullptr) {

        assert(invite_data_length == 0);

        return true;

    }

    uint8_t *invite_data_copy = (uint8_t *)malloc(invite_data_length);

    if (invite_data_copy == nullptr) {

        return false;

    }

    memcpy(invite_data_copy, invite_data, invite_data_length);

    group_invite->invite_data = invite_data_copy;

    group_invite->invite_data_length = invite_data_length;

    return true;

}

uint32_t tox_event_group_invite_get_invite_data_length(const Tox_Event_Group_Invite *group_invite)

{

    assert(group_invite != nullptr);

    return group_invite->invite_data_length;

}

const uint8_t *tox_event_group_invite_get_invite_data(const Tox_Event_Group_Invite *group_invite)

{

    assert(group_invite != nullptr);

    return group_invite->invite_data;

}

non_null(1) nullable(2)

static bool tox_event_group_invite_set_group_name(Tox_Event_Group_Invite *group_invite,

        const uint8_t *group_name, uint32_t group_name_length)

{

    assert(group_invite != nullptr);

    if (group_invite->group_name != nullptr) {

        free(group_invite->group_name);

        group_invite->group_name = nullptr;

        group_invite->group_name_length = 0;

    }

    if (group_name == nullptr) {

        assert(group_name_length == 0);

        return true;

    }

    uint8_t *group_name_copy = (uint8_t *)malloc(group_name_length);

    if (group_name_copy == nullptr) {

        return false;

    }

    memcpy(group_name_copy, group_name, group_name_length);

    group_invite->group_name = group_name_copy;

    group_invite->group_name_length = group_name_length;

    return true;

}

uint32_t tox_event_group_invite_get_group_name_length(const Tox_Event_Group_Invite *group_invite)

{

    assert(group_invite != nullptr);

    return group_invite->group_name_length;

}

const uint8_t *tox_event_group_invite_get_group_name(const Tox_Event_Group_Invite *group_invite)

{

    assert(group_invite != nullptr);

    return group_invite->group_name;

}

non_null()

static void tox_event_group_invite_construct(Tox_Event_Group_Invite *group_invite)

{

    *group_invite = (Tox_Event_Group_Invite) {

        0

    };

}

non_null()

static void tox_event_group_invite_destruct(Tox_Event_Group_Invite *group_invite, const Memory *mem)

{

    free(group_invite->invite_data);

    free(group_invite->group_name);

}

bool tox_event_group_invite_pack(

    const Tox_Event_Group_Invite *event, Bin_Pack *bp)

{

    return bin_pack_array(bp, 3)

           && bin_pack_u32(bp, event->friend_number)

           && bin_pack_bin(bp, event->invite_data, event->invite_data_length)

           && bin_pack_bin(bp, event->group_name, event->group_name_length);

}

non_null()

static bool tox_event_group_invite_unpack_into(

    Tox_Event_Group_Invite *event, Bin_Unpack *bu)

{

    assert(event != nullptr);

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

        return false;

    }

    return bin_unpack_u32(bu, &event->friend_number)

           && bin_unpack_bin(bu, &event->invite_data, &event->invite_data_length)

           && bin_unpack_bin(bu, &event->group_name, &event->group_name_length);

}

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

 *

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

 *

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

const Tox_Event_Group_Invite *tox_event_get_group_invite(const Tox_Event *event)

{

    return event->type == TOX_EVENT_GROUP_INVITE ? event->data.group_invite : nullptr;

}

Tox_Event_Group_Invite *tox_event_group_invite_new(const Memory *mem)

{

    Tox_Event_Group_Invite *const group_invite =

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

    if (group_invite == nullptr) {

        return nullptr;

    }

    tox_event_group_invite_construct(group_invite);

    return group_invite;

}

void tox_event_group_invite_free(Tox_Event_Group_Invite *group_invite, const Memory *mem)

{

    if (group_invite != nullptr) {

        tox_event_group_invite_destruct(group_invite, mem);

    }

    mem_delete(mem, group_invite);

}

non_null()

static Tox_Event_Group_Invite *tox_events_add_group_invite(Tox_Events *events, const Memory *mem)

{

    Tox_Event_Group_Invite *const group_invite = tox_event_group_invite_new(mem);

    if (group_invite == nullptr) {

        return nullptr;

    }

    Tox_Event event;

    event.type = TOX_EVENT_GROUP_INVITE;

    event.data.group_invite = group_invite;

    tox_events_add(events, &event);

    return group_invite;

}

bool tox_event_group_invite_unpack(

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

{

    assert(event != nullptr);

    assert(*event == nullptr);

    *event = tox_event_group_invite_new(mem);

    if (*event == nullptr) {

        return false;

    }

    return tox_event_group_invite_unpack_into(*event, bu);

}

non_null()

static Tox_Event_Group_Invite *tox_event_group_invite_alloc(void *user_data)

{

    Tox_Events_State *state = tox_events_alloc(user_data);

    assert(state != nullptr);

    if (state->events == nullptr) {

        return nullptr;

    }

    Tox_Event_Group_Invite *group_invite = tox_events_add_group_invite(state->events, state->mem);

    if (group_invite == nullptr) {

        state->error = TOX_ERR_EVENTS_ITERATE_MALLOC;

        return nullptr;

    }

    return group_invite;

}

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

 *

 * :: event handler

 *

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

void tox_events_handle_group_invite(Tox *tox, uint32_t friend_number, const uint8_t *invite_data, size_t length, const uint8_t *group_name, size_t group_name_length,

        void *user_data)

{

    Tox_Event_Group_Invite *group_invite = tox_event_group_invite_alloc(user_data);

    if (group_invite == nullptr) {

        return;

    }

    tox_event_group_invite_set_friend_number(group_invite, friend_number);

    tox_event_group_invite_set_invite_data(group_invite, invite_data, length);

    tox_event_group_invite_set_group_name(group_invite, group_name, group_name_length);

}