/*
 * Copyright (c) 2021, Dex♪ <dexes.ttp@gmail.com>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <LibCore/AnonymousBuffer.h>
#include <LibRequests/RequestClient.h>
#include <LibRequests/WebSocket.h>

namespace Requests {

static constexpr size_t WEBSOCKET_SHARED_MEMORY_THRESHOLD = 16 * MiB;

WebSocket::WebSocket(RequestClient& client, u64 websocket_id)
    : m_client(client)
    , m_websocket_id(websocket_id)
{
}

WebSocket::ReadyState WebSocket::ready_state()
{
    return m_ready_state;
}

void WebSocket::set_ready_state(ReadyState ready_state)
{
    m_ready_state = ready_state;
}

ByteString WebSocket::subprotocol_in_use()
{
    return m_subprotocol;
}

void WebSocket::set_subprotocol_in_use(ByteString subprotocol)
{
    m_subprotocol = move(subprotocol);
}

void WebSocket::send(ReadonlyBytes binary_or_text_message, bool is_text)
{
    if (!m_client)
        return;
    if (binary_or_text_message.size() >= WEBSOCKET_SHARED_MEMORY_THRESHOLD) {
        auto buffer_or_error = Core::AnonymousBuffer::create_with_size(binary_or_text_message.size());
        if (!buffer_or_error.is_error()) {
            auto buffer = buffer_or_error.release_value();
            __builtin_memcpy(buffer.data<void>(), binary_or_text_message.data(), binary_or_text_message.size());
            m_client->async_websocket_send_shared(m_websocket_id, is_text, move(buffer));
            return;
        }
        dbgln("WebSocket::send: failed to allocate shared buffer for {} bytes: {}", binary_or_text_message.size(), buffer_or_error.error());
    }
    m_client->async_websocket_send(m_websocket_id, is_text, binary_or_text_message);
}

void WebSocket::send(StringView text_message)
{
    send(text_message.bytes(), true);
}

void WebSocket::close(u16 code, ByteString reason)
{
    if (!m_client)
        return;
    m_client->async_websocket_close(m_websocket_id, code, move(reason));
}

void WebSocket::did_open(Badge<RequestClient>)
{
    if (on_open)
        on_open();
}

void WebSocket::did_receive(Badge<RequestClient>, ByteBuffer data, bool is_text)
{
    if (on_message)
        on_message(WebSocket::Message { move(data), is_text });
}

void WebSocket::did_error(Badge<RequestClient>, i32 error_code)
{
    if (on_error)
        on_error((WebSocket::Error)error_code);
}

void WebSocket::did_close(Badge<RequestClient>, u16 code, ByteString reason, bool was_clean)
{
    if (on_close)
        on_close(code, move(reason), was_clean);
}

void WebSocket::did_request_certificates(Badge<RequestClient>)
{
    if (on_certificate_requested) {
        auto result = on_certificate_requested();
        if (!m_client || !m_client->websocket_set_certificate(m_websocket_id, result.certificate, result.key))
            dbgln("WebSocket: set_certificate failed");
    }
}

void WebSocket::detach_from_client(Badge<RequestClient>)
{
    m_client = nullptr;
}

}
