/* 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_Peer_Exit {

    uint32_t group_number;

    uint32_t peer_id;

    Tox_Group_Exit_Type exit_type;

    uint8_t *name;

    uint32_t name_length;

    uint8_t *part_message;

    uint32_t part_message_length;

};

non_null()

static void tox_event_group_peer_exit_set_group_number(Tox_Event_Group_Peer_Exit *group_peer_exit,

        uint32_t group_number)

{

    assert(group_peer_exit != nullptr);

    group_peer_exit->group_number = group_number;

}

uint32_t tox_event_group_peer_exit_get_group_number(const Tox_Event_Group_Peer_Exit *group_peer_exit)

{

    assert(group_peer_exit != nullptr);

    return group_peer_exit->group_number;

}

non_null()

static void tox_event_group_peer_exit_set_peer_id(Tox_Event_Group_Peer_Exit *group_peer_exit,

        uint32_t peer_id)

{

    assert(group_peer_exit != nullptr);

    group_peer_exit->peer_id = peer_id;

}

uint32_t tox_event_group_peer_exit_get_peer_id(const Tox_Event_Group_Peer_Exit *group_peer_exit)

{

    assert(group_peer_exit != nullptr);

    return group_peer_exit->peer_id;

}

non_null()

static void tox_event_group_peer_exit_set_exit_type(Tox_Event_Group_Peer_Exit *group_peer_exit,

        Tox_Group_Exit_Type exit_type)

{

    assert(group_peer_exit != nullptr);

    group_peer_exit->exit_type = exit_type;

}

Tox_Group_Exit_Type tox_event_group_peer_exit_get_exit_type(const Tox_Event_Group_Peer_Exit *group_peer_exit)

{

    assert(group_peer_exit != nullptr);

    return group_peer_exit->exit_type;

}

non_null(1) nullable(2)

static bool tox_event_group_peer_exit_set_name(Tox_Event_Group_Peer_Exit *group_peer_exit,

        const uint8_t *name, uint32_t name_length)

{

    assert(group_peer_exit != nullptr);

    if (group_peer_exit->name != nullptr) {

        free(group_peer_exit->name);

        group_peer_exit->name = nullptr;

        group_peer_exit->name_length = 0;

    }

    if (name == nullptr) {

        assert(name_length == 0);

        return true;

    }

    uint8_t *name_copy = (uint8_t *)malloc(name_length);

    if (name_copy == nullptr) {

        return false;

    }

    memcpy(name_copy, name, name_length);

    group_peer_exit->name = name_copy;

    group_peer_exit->name_length = name_length;

    return true;

}

uint32_t tox_event_group_peer_exit_get_name_length(const Tox_Event_Group_Peer_Exit *group_peer_exit)

{

    assert(group_peer_exit != nullptr);

    return group_peer_exit->name_length;

}

const uint8_t *tox_event_group_peer_exit_get_name(const Tox_Event_Group_Peer_Exit *group_peer_exit)

{

    assert(group_peer_exit != nullptr);

    return group_peer_exit->name;

}

non_null(1) nullable(2)

static bool tox_event_group_peer_exit_set_part_message(Tox_Event_Group_Peer_Exit *group_peer_exit,

        const uint8_t *part_message, uint32_t part_message_length)

{

    assert(group_peer_exit != nullptr);

    if (group_peer_exit->part_message != nullptr) {

        free(group_peer_exit->part_message);

        group_peer_exit->part_message = nullptr;

        group_peer_exit->part_message_length = 0;

    }

    if (part_message == nullptr) {

        assert(part_message_length == 0);

        return true;

    }

    uint8_t *part_message_copy = (uint8_t *)malloc(part_message_length);

    if (part_message_copy == nullptr) {

        return false;

    }

    memcpy(part_message_copy, part_message, part_message_length);

    group_peer_exit->part_message = part_message_copy;

    group_peer_exit->part_message_length = part_message_length;

    return true;

}

uint32_t tox_event_group_peer_exit_get_part_message_length(const Tox_Event_Group_Peer_Exit *group_peer_exit)

{

    assert(group_peer_exit != nullptr);

    return group_peer_exit->part_message_length;

}

const uint8_t *tox_event_group_peer_exit_get_part_message(const Tox_Event_Group_Peer_Exit *group_peer_exit)

{

    assert(group_peer_exit != nullptr);

    return group_peer_exit->part_message;

}

non_null()

static void tox_event_group_peer_exit_construct(Tox_Event_Group_Peer_Exit *group_peer_exit)

{

    *group_peer_exit = (Tox_Event_Group_Peer_Exit) {

        0

    };

}

non_null()

static void tox_event_group_peer_exit_destruct(Tox_Event_Group_Peer_Exit *group_peer_exit, const Memory *mem)

{

    free(group_peer_exit->name);

    free(group_peer_exit->part_message);

}

bool tox_event_group_peer_exit_pack(

    const Tox_Event_Group_Peer_Exit *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_group_exit_type_pack(event->exit_type, bp)

           && bin_pack_bin(bp, event->name, event->name_length)

           && bin_pack_bin(bp, event->part_message, event->part_message_length);

}

non_null()

static bool tox_event_group_peer_exit_unpack_into(

    Tox_Event_Group_Peer_Exit *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_group_exit_type_unpack(&event->exit_type, bu)

           && bin_unpack_bin(bu, &event->name, &event->name_length)

           && bin_unpack_bin(bu, &event->part_message, &event->part_message_length);

}

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

 *

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

 *

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

const Tox_Event_Group_Peer_Exit *tox_event_get_group_peer_exit(const Tox_Event *event)

{

    return event->type == TOX_EVENT_GROUP_PEER_EXIT ? event->data.group_peer_exit : nullptr;

}

Tox_Event_Group_Peer_Exit *tox_event_group_peer_exit_new(const Memory *mem)

{

    Tox_Event_Group_Peer_Exit *const group_peer_exit =

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

    if (group_peer_exit == nullptr) {

        return nullptr;

    }

    tox_event_group_peer_exit_construct(group_peer_exit);

    return group_peer_exit;

}

void tox_event_group_peer_exit_free(Tox_Event_Group_Peer_Exit *group_peer_exit, const Memory *mem)

{

    if (group_peer_exit != nullptr) {

        tox_event_group_peer_exit_destruct(group_peer_exit, mem);

    }

    mem_delete(mem, group_peer_exit);

}

non_null()

static Tox_Event_Group_Peer_Exit *tox_events_add_group_peer_exit(Tox_Events *events, const Memory *mem)

{

    Tox_Event_Group_Peer_Exit *const group_peer_exit = tox_event_group_peer_exit_new(mem);

    if (group_peer_exit == nullptr) {

        return nullptr;

    }

    Tox_Event event;

    event.type = TOX_EVENT_GROUP_PEER_EXIT;

    event.data.group_peer_exit = group_peer_exit;

    tox_events_add(events, &event);

    return group_peer_exit;

}

bool tox_event_group_peer_exit_unpack(

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

{

    assert(event != nullptr);

    assert(*event == nullptr);

    *event = tox_event_group_peer_exit_new(mem);

    if (*event == nullptr) {

        return false;

    }

    return tox_event_group_peer_exit_unpack_into(*event, bu);

}

non_null()

static Tox_Event_Group_Peer_Exit *tox_event_group_peer_exit_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_Peer_Exit *group_peer_exit = tox_events_add_group_peer_exit(state->events, state->mem);

    if (group_peer_exit == nullptr) {

        state->error = TOX_ERR_EVENTS_ITERATE_MALLOC;

        return nullptr;

    }

    return group_peer_exit;

}

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

 *

 * :: event handler

 *

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

void tox_events_handle_group_peer_exit(Tox *tox, uint32_t group_number, uint32_t peer_id, Tox_Group_Exit_Type exit_type, const uint8_t *name, size_t name_length, const uint8_t *part_message, size_t part_message_length,

        void *user_data)

{

    Tox_Event_Group_Peer_Exit *group_peer_exit = tox_event_group_peer_exit_alloc(user_data);

    if (group_peer_exit == nullptr) {

        return;

    }

    tox_event_group_peer_exit_set_group_number(group_peer_exit, group_number);

    tox_event_group_peer_exit_set_peer_id(group_peer_exit, peer_id);

    tox_event_group_peer_exit_set_exit_type(group_peer_exit, exit_type);

    tox_event_group_peer_exit_set_name(group_peer_exit, name, name_length);

    tox_event_group_peer_exit_set_part_message(group_peer_exit, part_message, part_message_length);

}