/* The MIT License
 *
 * Copyright (c) 2010 OTClient, https://github.com/edubart/otclient
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */


#include <net/outputmessage.h>

OutputMessage::OutputMessage()
{
    reset();
}

void OutputMessage::reset()
{
    m_writePos = 0;
    m_messageSize = 0;
}

void OutputMessage::addU8(uint8 value)
{
    if(!canWrite(1))
        return;

    m_buffer[m_writePos] = value;
    m_writePos += 1;
    m_messageSize += 1;
}

void OutputMessage::addU16(uint16 value)
{
    if(!canWrite(2))
        return;

    *(uint16_t*)(m_buffer + m_writePos) = value;
    m_writePos += 2;
    m_messageSize += 2;
}

void OutputMessage::addU32(uint32 value)
{
    if(!canWrite(4))
        return;

    *(uint32*)(m_buffer + m_writePos) = value;
    m_writePos += 4;
    m_messageSize += 4;
}

void OutputMessage::addU64(uint64 value)
{
    if(!canWrite(8))
        return;

    *(uint64*)(m_buffer + m_writePos) = value;
    m_writePos += 8;
    m_messageSize += 8;
}

void OutputMessage::addString(const char* value)
{
    size_t stringLength = strlen(value);
    if(stringLength > 0xFFFF || !canWrite(stringLength + 2))
        return;

    addU16(stringLength);
    strcpy((char*)(m_buffer + m_writePos), value);
    m_writePos += stringLength;
    m_messageSize += stringLength;
}

void OutputMessage::addString(const std::string &value)
{
    addString(value.c_str());
}

bool OutputMessage::canWrite(int bytes)
{
    return (m_writePos + bytes <= BUFFER_MAXSIZE);
}