/* 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"

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

 *

 * :: struct and accessors

 *

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

struct Tox_Event_File_Chunk_Request {

    uint32_t friend_number;

    uint32_t file_number;

    uint64_t position;

    uint16_t length;

};

non_null()

static void tox_event_file_chunk_request_set_friend_number(Tox_Event_File_Chunk_Request *file_chunk_request,

        uint32_t friend_number)

{

    assert(file_chunk_request != nullptr);

    file_chunk_request->friend_number = friend_number;

}

uint32_t tox_event_file_chunk_request_get_friend_number(const Tox_Event_File_Chunk_Request *file_chunk_request)

{

    assert(file_chunk_request != nullptr);

    return file_chunk_request->friend_number;

}

non_null()

static void tox_event_file_chunk_request_set_file_number(Tox_Event_File_Chunk_Request *file_chunk_request,

        uint32_t file_number)

{

    assert(file_chunk_request != nullptr);

    file_chunk_request->file_number = file_number;

}

uint32_t tox_event_file_chunk_request_get_file_number(const Tox_Event_File_Chunk_Request *file_chunk_request)

{

    assert(file_chunk_request != nullptr);

    return file_chunk_request->file_number;

}

non_null()

static void tox_event_file_chunk_request_set_position(Tox_Event_File_Chunk_Request *file_chunk_request,

        uint64_t position)

{

    assert(file_chunk_request != nullptr);

    file_chunk_request->position = position;

}

uint64_t tox_event_file_chunk_request_get_position(const Tox_Event_File_Chunk_Request *file_chunk_request)

{

    assert(file_chunk_request != nullptr);

    return file_chunk_request->position;

}

non_null()

static void tox_event_file_chunk_request_set_length(Tox_Event_File_Chunk_Request *file_chunk_request,

        uint16_t length)

{

    assert(file_chunk_request != nullptr);

    file_chunk_request->length = length;

}

uint16_t tox_event_file_chunk_request_get_length(const Tox_Event_File_Chunk_Request *file_chunk_request)

{

    assert(file_chunk_request != nullptr);

    return file_chunk_request->length;

}

non_null()

static void tox_event_file_chunk_request_construct(Tox_Event_File_Chunk_Request *file_chunk_request)

{

    *file_chunk_request = (Tox_Event_File_Chunk_Request) {

        0

    };

}

non_null()

static void tox_event_file_chunk_request_destruct(Tox_Event_File_Chunk_Request *file_chunk_request, const Memory *mem)

{

    return;

}

bool tox_event_file_chunk_request_pack(

    const Tox_Event_File_Chunk_Request *event, Bin_Pack *bp)

{

    return bin_pack_array(bp, 4)

           && bin_pack_u32(bp, event->friend_number)

           && bin_pack_u32(bp, event->file_number)

           && bin_pack_u64(bp, event->position)

           && bin_pack_u16(bp, event->length);

}

non_null()

static bool tox_event_file_chunk_request_unpack_into(

    Tox_Event_File_Chunk_Request *event, Bin_Unpack *bu)

{

    assert(event != nullptr);

    if (!bin_unpack_array_fixed(bu, 4, nullptr)) {

        return false;

    }

    return bin_unpack_u32(bu, &event->friend_number)

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

           && bin_unpack_u64(bu, &event->position)

           && bin_unpack_u16(bu, &event->length);

}

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

 *

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

 *

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

const Tox_Event_File_Chunk_Request *tox_event_get_file_chunk_request(const Tox_Event *event)

{

    return event->type == TOX_EVENT_FILE_CHUNK_REQUEST ? event->data.file_chunk_request : nullptr;

}

Tox_Event_File_Chunk_Request *tox_event_file_chunk_request_new(const Memory *mem)

{

    Tox_Event_File_Chunk_Request *const file_chunk_request =

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

    if (file_chunk_request == nullptr) {

        return nullptr;

    }

    tox_event_file_chunk_request_construct(file_chunk_request);

    return file_chunk_request;

}

void tox_event_file_chunk_request_free(Tox_Event_File_Chunk_Request *file_chunk_request, const Memory *mem)

{

    if (file_chunk_request != nullptr) {

        tox_event_file_chunk_request_destruct(file_chunk_request, mem);

    }

    mem_delete(mem, file_chunk_request);

}

non_null()

static Tox_Event_File_Chunk_Request *tox_events_add_file_chunk_request(Tox_Events *events, const Memory *mem)

{

    Tox_Event_File_Chunk_Request *const file_chunk_request = tox_event_file_chunk_request_new(mem);

    if (file_chunk_request == nullptr) {

        return nullptr;

    }

    Tox_Event event;

    event.type = TOX_EVENT_FILE_CHUNK_REQUEST;

    event.data.file_chunk_request = file_chunk_request;

    tox_events_add(events, &event);

    return file_chunk_request;

}

bool tox_event_file_chunk_request_unpack(

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

{

    assert(event != nullptr);

    assert(*event == nullptr);

    *event = tox_event_file_chunk_request_new(mem);

    if (*event == nullptr) {

        return false;

    }

    return tox_event_file_chunk_request_unpack_into(*event, bu);

}

non_null()

static Tox_Event_File_Chunk_Request *tox_event_file_chunk_request_alloc(void *user_data)

{

    Tox_Events_State *state = tox_events_alloc(user_data);

    assert(state != nullptr);

    if (state->events == nullptr) {

        return nullptr;

    }

    Tox_Event_File_Chunk_Request *file_chunk_request = tox_events_add_file_chunk_request(state->events, state->mem);

    if (file_chunk_request == nullptr) {

        state->error = TOX_ERR_EVENTS_ITERATE_MALLOC;

        return nullptr;

    }

    return file_chunk_request;

}

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

 *

 * :: event handler

 *

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

void tox_events_handle_file_chunk_request(Tox *tox, uint32_t friend_number, uint32_t file_number, uint64_t position, size_t length,

        void *user_data)

{

    Tox_Event_File_Chunk_Request *file_chunk_request = tox_event_file_chunk_request_alloc(user_data);

    if (file_chunk_request == nullptr) {

        return;

    }

    tox_event_file_chunk_request_set_friend_number(file_chunk_request, friend_number);

    tox_event_file_chunk_request_set_file_number(file_chunk_request, file_number);

    tox_event_file_chunk_request_set_position(file_chunk_request, position);

    tox_event_file_chunk_request_set_length(file_chunk_request, length);

}