/* 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"

#include "../tox_pack.h"

#include "../tox_unpack.h"

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

 *

 * :: struct and accessors

 *

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

struct Tox_Event_Group_Message {

    uint32_t group_number;

    uint32_t peer_id;

    Tox_Message_Type type;

    uint8_t *message;

    uint32_t message_length;

    uint32_t message_id;

};

non_null()

static void tox_event_group_message_set_group_number(Tox_Event_Group_Message *group_message,

        uint32_t group_number)

{

    assert(group_message != nullptr);

    group_message->group_number = group_number;

}

uint32_t tox_event_group_message_get_group_number(const Tox_Event_Group_Message *group_message)

{

    assert(group_message != nullptr);

    return group_message->group_number;

}

non_null()

static void tox_event_group_message_set_peer_id(Tox_Event_Group_Message *group_message,

        uint32_t peer_id)

{

    assert(group_message != nullptr);

    group_message->peer_id = peer_id;

}

uint32_t tox_event_group_message_get_peer_id(const Tox_Event_Group_Message *group_message)

{

    assert(group_message != nullptr);

    return group_message->peer_id;

}

non_null()

static void tox_event_group_message_set_type(Tox_Event_Group_Message *group_message,

        Tox_Message_Type type)

{

    assert(group_message != nullptr);

    group_message->type = type;

}

Tox_Message_Type tox_event_group_message_get_type(const Tox_Event_Group_Message *group_message)

{

    assert(group_message != nullptr);

    return group_message->type;

}

non_null(1) nullable(2)

static bool tox_event_group_message_set_message(Tox_Event_Group_Message *group_message,

        const uint8_t *message, uint32_t message_length)

{

    assert(group_message != nullptr);

    if (group_message->message != nullptr) {

        free(group_message->message);

        group_message->message = nullptr;

        group_message->message_length = 0;

    }

    if (message == nullptr) {

        assert(message_length == 0);

        return true;

    }

    uint8_t *message_copy = (uint8_t *)malloc(message_length);

    if (message_copy == nullptr) {

        return false;

    }

    memcpy(message_copy, message, message_length);

    group_message->message = message_copy;

    group_message->message_length = message_length;

    return true;

}

uint32_t tox_event_group_message_get_message_length(const Tox_Event_Group_Message *group_message)

{

    assert(group_message != nullptr);

    return group_message->message_length;

}

const uint8_t *tox_event_group_message_get_message(const Tox_Event_Group_Message *group_message)

{

    assert(group_message != nullptr);

    return group_message->message;

}

non_null()

static void tox_event_group_message_set_message_id(Tox_Event_Group_Message *group_message,

        uint32_t message_id)

{

    assert(group_message != nullptr);

    group_message->message_id = message_id;

}

uint32_t tox_event_group_message_get_message_id(const Tox_Event_Group_Message *group_message)

{

    assert(group_message != nullptr);

    return group_message->message_id;

}

non_null()

static void tox_event_group_message_construct(Tox_Event_Group_Message *group_message)

{

    *group_message = (Tox_Event_Group_Message) {

        0

    };

}

non_null()

static void tox_event_group_message_destruct(Tox_Event_Group_Message *group_message, const Memory *mem)

{

    free(group_message->message);

}

bool tox_event_group_message_pack(

    const Tox_Event_Group_Message *event, Bin_Pack *bp)

{

    return bin_pack_array(bp, 5)

           && bin_pack_u32(bp, event->group_number)

           && bin_pack_u32(bp, event->peer_id)

           && tox_message_type_pack(event->type, bp)

           && bin_pack_bin(bp, event->message, event->message_length)

           && bin_pack_u32(bp, event->message_id);

}

non_null()

static bool tox_event_group_message_unpack_into(

    Tox_Event_Group_Message *event, Bin_Unpack *bu)

{

    assert(event != nullptr);

    if (!bin_unpack_array_fixed(bu, 5, nullptr)) {

        return false;

    }

    return bin_unpack_u32(bu, &event->group_number)

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

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

           && bin_unpack_bin(bu, &event->message, &event->message_length)

           && bin_unpack_u32(bu, &event->message_id);

}

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

 *

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

 *

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

const Tox_Event_Group_Message *tox_event_get_group_message(const Tox_Event *event)

{

    return event->type == TOX_EVENT_GROUP_MESSAGE ? event->data.group_message : nullptr;

}

Tox_Event_Group_Message *tox_event_group_message_new(const Memory *mem)

{

    Tox_Event_Group_Message *const group_message =

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

    if (group_message == nullptr) {

        return nullptr;

    }

    tox_event_group_message_construct(group_message);

    return group_message;

}

void tox_event_group_message_free(Tox_Event_Group_Message *group_message, const Memory *mem)

{

    if (group_message != nullptr) {

        tox_event_group_message_destruct(group_message, mem);

    }

    mem_delete(mem, group_message);

}

non_null()

static Tox_Event_Group_Message *tox_events_add_group_message(Tox_Events *events, const Memory *mem)

{

    Tox_Event_Group_Message *const group_message = tox_event_group_message_new(mem);

    if (group_message == nullptr) {

        return nullptr;

    }

    Tox_Event event;

    event.type = TOX_EVENT_GROUP_MESSAGE;

    event.data.group_message = group_message;

    tox_events_add(events, &event);

    return group_message;

}

bool tox_event_group_message_unpack(

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

{

    assert(event != nullptr);

    assert(*event == nullptr);

    *event = tox_event_group_message_new(mem);

    if (*event == nullptr) {

        return false;

    }

    return tox_event_group_message_unpack_into(*event, bu);

}

non_null()

static Tox_Event_Group_Message *tox_event_group_message_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_Message *group_message = tox_events_add_group_message(state->events, state->mem);

    if (group_message == nullptr) {

        state->error = TOX_ERR_EVENTS_ITERATE_MALLOC;

        return nullptr;

    }

    return group_message;

}

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

 *

 * :: event handler

 *

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

void tox_events_handle_group_message(Tox *tox, uint32_t group_number, uint32_t peer_id, Tox_Message_Type type, const uint8_t *message, size_t length, uint32_t message_id,

        void *user_data)

{

    Tox_Event_Group_Message *group_message = tox_event_group_message_alloc(user_data);

    if (group_message == nullptr) {

        return;

    }

    tox_event_group_message_set_group_number(group_message, group_number);

    tox_event_group_message_set_peer_id(group_message, peer_id);

    tox_event_group_message_set_type(group_message, type);

    tox_event_group_message_set_message(group_message, message, length);

    tox_event_group_message_set_message_id(group_message, message_id);

}