#include "Buffer.h"
#include <cstring>
#include <nng/nng.h>

namespace Nng {
Buffer::Buffer(std::size_t size) {
    m_size = size;
    m_buffer = nng_alloc(size);
}

Buffer::Buffer(const Buffer &rhs) : Buffer(rhs.m_size) {
    std::memcpy(m_buffer, rhs.m_buffer, rhs.m_size);
}

Buffer &Buffer::operator=(const Buffer &rhs) {
    if (this != &rhs) {
        if (m_size != rhs.m_size) {
            if (m_buffer != nullptr) nng_free(m_buffer, m_size);
            m_buffer = nng_alloc(rhs.m_size);
            m_size = rhs.m_size;
        }
        memcpy(m_buffer, rhs.m_buffer, m_size);
    }
    return *this;
}

Buffer &Buffer::operator=(Buffer &&rhs) noexcept {
    if (this != &rhs) {
        if (m_buffer != nullptr) nng_free(m_buffer, m_size);
        m_buffer = rhs.m_buffer;
        m_size = rhs.m_size;
        rhs.m_buffer = nullptr;
        rhs.m_size = 0;
    }
    return *this;
}

Buffer::~Buffer() {
    if (m_buffer != nullptr) {
        nng_free(m_buffer, m_size);
    }
}

void *Buffer::release() {
    auto ret = m_buffer;
    m_buffer = nullptr;
    m_size = 0;
    return m_buffer;
}

std::string_view Buffer::data() const noexcept {
    return std::string_view{reinterpret_cast<const char *>(m_buffer), m_size};
}

} // namespace Nng