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

 * Copyright © 2023-2024 The TokTok team.

 */

#include "events_alloc.h"

#include <assert.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_Friend_Status {

    uint32_t friend_number;

    Tox_User_Status status;

};

non_null()

static void tox_event_friend_status_set_friend_number(Tox_Event_Friend_Status *friend_status,

        uint32_t friend_number)

{

    assert(friend_status != nullptr);

    friend_status->friend_number = friend_number;

}

uint32_t tox_event_friend_status_get_friend_number(const Tox_Event_Friend_Status *friend_status)

{

    assert(friend_status != nullptr);

    return friend_status->friend_number;

}

non_null()

static void tox_event_friend_status_set_status(Tox_Event_Friend_Status *friend_status,

        Tox_User_Status status)

{

    assert(friend_status != nullptr);

    friend_status->status = status;

}

Tox_User_Status tox_event_friend_status_get_status(const Tox_Event_Friend_Status *friend_status)

{

    assert(friend_status != nullptr);

    return friend_status->status;

}

non_null()

static void tox_event_friend_status_construct(Tox_Event_Friend_Status *friend_status)

{

    *friend_status = (Tox_Event_Friend_Status) {

        0

    };

}

non_null()

static void tox_event_friend_status_destruct(Tox_Event_Friend_Status *friend_status, const Memory *mem)

{

    return;

}

bool tox_event_friend_status_pack(

    const Tox_Event_Friend_Status *event, Bin_Pack *bp)

{

    return bin_pack_array(bp, 2)

           && bin_pack_u32(bp, event->friend_number)

           && tox_user_status_pack(event->status, bp);

}

non_null()

static bool tox_event_friend_status_unpack_into(

    Tox_Event_Friend_Status *event, Bin_Unpack *bu)

{

    assert(event != nullptr);

    if (!bin_unpack_array_fixed(bu, 2, nullptr)) {

        return false;

    }

    return bin_unpack_u32(bu, &event->friend_number)

           && tox_user_status_unpack(&event->status, bu);

}

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

 *

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

 *

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

const Tox_Event_Friend_Status *tox_event_get_friend_status(const Tox_Event *event)

{

    return event->type == TOX_EVENT_FRIEND_STATUS ? event->data.friend_status : nullptr;

}

Tox_Event_Friend_Status *tox_event_friend_status_new(const Memory *mem)

{

    Tox_Event_Friend_Status *const friend_status =

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

    if (friend_status == nullptr) {

        return nullptr;

    }

    tox_event_friend_status_construct(friend_status);

    return friend_status;

}

void tox_event_friend_status_free(Tox_Event_Friend_Status *friend_status, const Memory *mem)

{

    if (friend_status != nullptr) {

        tox_event_friend_status_destruct(friend_status, mem);

    }

    mem_delete(mem, friend_status);

}

non_null()

static Tox_Event_Friend_Status *tox_events_add_friend_status(Tox_Events *events, const Memory *mem)

{

    Tox_Event_Friend_Status *const friend_status = tox_event_friend_status_new(mem);

    if (friend_status == nullptr) {

        return nullptr;

    }

    Tox_Event event;

    event.type = TOX_EVENT_FRIEND_STATUS;

    event.data.friend_status = friend_status;

    tox_events_add(events, &event);

    return friend_status;

}

bool tox_event_friend_status_unpack(

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

{

    assert(event != nullptr);

    assert(*event == nullptr);

    *event = tox_event_friend_status_new(mem);

    if (*event == nullptr) {

        return false;

    }

    return tox_event_friend_status_unpack_into(*event, bu);

}

non_null()

static Tox_Event_Friend_Status *tox_event_friend_status_alloc(void *user_data)

{

    Tox_Events_State *state = tox_events_alloc(user_data);

    assert(state != nullptr);

    if (state->events == nullptr) {

        return nullptr;

    }

    Tox_Event_Friend_Status *friend_status = tox_events_add_friend_status(state->events, state->mem);

    if (friend_status == nullptr) {

        state->error = TOX_ERR_EVENTS_ITERATE_MALLOC;

        return nullptr;

    }

    return friend_status;

}

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

 *

 * :: event handler

 *

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

void tox_events_handle_friend_status(Tox *tox, uint32_t friend_number, Tox_User_Status status,

        void *user_data)

{

    Tox_Event_Friend_Status *friend_status = tox_event_friend_status_alloc(user_data);

    if (friend_status == nullptr) {

        return;

    }

    tox_event_friend_status_set_friend_number(friend_status, friend_number);

    tox_event_friend_status_set_status(friend_status, status);

}