/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Copyright 2011 Danny Robson <danny@nerdcruft.net>
 */

#ifndef __NET_SOCKET_HPP
#define __NET_SOCKET_HPP

#include <memory>

#include "types.hpp"
#include "address.hpp"


//-----------------------------------------------------------------------------
namespace net {
    template <domain D>
    class socket_domain {
        public:
            typedef address<D> address_type;

        protected:
            socket_t m_fd;

            socket_domain (socket_t _fd);
            socket_domain (const socket_domain<D>&);
            ~socket_domain ();

        public:
            socket_t native (void) const;

            void shutdown (void);

            template <typename T>
            T get_option (level, option);

            void set_option (level, option);
            template <typename T>
            void set_option (level, option, const T &value);

        protected:
            void bind (const address_type&);
    };


    template <domain D, type T>
    class socket;


    template <domain D>
    class socket<D, type::STREAM>: public socket_domain<D> {
        public:
            typedef socket<D, type::STREAM>      socket_type;
            typedef std::unique_ptr<socket_type> socket_ptr;
            typedef address<D>                   address_type;

        protected:
            static const unsigned int DEFAULT_BACKLOG = 5;

            socket (socket_t _fd);

        public:
            socket ();
            socket (const socket_type  &);

            void   send (const uint8_t *restrict, size_t);
            size_t recv (uint8_t *restrict, size_t);

            void connect (const address_type&);

            void listen (const address_type&, unsigned int backlog = DEFAULT_BACKLOG);
            socket_ptr accept (void);

            address_type get_peer (void) const;
    };


    template <domain D>
    class socket<D, type::DGRAM> : public socket_domain<D> {
        public:
            typedef socket<D, type::DGRAM> socket_type;
            typedef address<D>             address_type;

            socket (socket_t _fd);

        public:
            socket ();
            socket (const socket_type  &);

            void send_addr (const address_type&, const uint8_t *restrict, size_t);
            address_type recv_addr (uint8_t *restrict, size_t);
    };
}


#endif // __NET_SOCKET_HPP