//
// Copyright 2010 Ettus Research LLC
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
//

#include <uhd/utils.hpp>
#include "usrp2_impl.hpp"

using namespace uhd;

/***********************************************************************
 * Helper Methods
 **********************************************************************/
void usrp2_impl::mboard_init(void){
    _mboards[""] = wax_obj_proxy::make(
        boost::bind(&usrp2_impl::mboard_get, this, _1, _2),
        boost::bind(&usrp2_impl::mboard_set, this, _1, _2)
    );

    //set the time on the usrp2 as close as possible to the system utc time
    boost::posix_time::ptime now(boost::posix_time::microsec_clock::universal_time());
    set_time_spec(time_spec_t(now, get_master_clock_freq()), true);
}

void usrp2_impl::init_clock_config(void){
    //init the ref source clock config
    _ref_source_dict = boost::assign::map_list_of
        ("int", USRP2_REF_SOURCE_INT)
        ("sma", USRP2_REF_SOURCE_SMA)
        ("mimo", USRP2_REF_SOURCE_MIMO)
    ;
    _clock_config.ref_source = "int";

    //init the pps source clock config
    _pps_source_dict = boost::assign::map_list_of
        ("sma", USRP2_PPS_SOURCE_SMA)
        ("mimo", USRP2_PPS_SOURCE_MIMO)
    ;
    _clock_config.pps_source = "sma";

    //init the pps polarity clock config
    _pps_polarity_dict = boost::assign::map_list_of
        (clock_config_t::POLARITY_POS, USRP2_PPS_POLARITY_POS)
        (clock_config_t::POLARITY_NEG, USRP2_PPS_POLARITY_NEG)
    ;
    _clock_config.pps_polarity = clock_config_t::POLARITY_NEG;

    //update the clock config (sends a control packet)
    update_clock_config();
}

void usrp2_impl::update_clock_config(void){
    //setup the out data
    usrp2_ctrl_data_t out_data;
    out_data.id = htonl(USRP2_CTRL_ID_HERES_A_NEW_CLOCK_CONFIG_BRO);
    out_data.data.clock_config.ref_source   = _ref_source_dict  [_clock_config.ref_source];
    out_data.data.clock_config.pps_source   = _pps_source_dict  [_clock_config.pps_source];
    out_data.data.clock_config.pps_polarity = _pps_polarity_dict[_clock_config.pps_polarity];

    //send and recv
    usrp2_ctrl_data_t in_data = ctrl_send_and_recv(out_data);
    ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_GOT_THE_NEW_CLOCK_CONFIG_DUDE);
}

void usrp2_impl::set_time_spec(const time_spec_t &time_spec, bool now){
    //setup the out data
    usrp2_ctrl_data_t out_data;
    out_data.id = htonl(USRP2_CTRL_ID_GOT_A_NEW_TIME_FOR_YOU_BRO);
    out_data.data.time_args.secs  = htonl(time_spec.secs);
    out_data.data.time_args.ticks = htonl(time_spec.ticks);
    out_data.data.time_args.now   = (now)? 1 : 0;

    //send and recv
    usrp2_ctrl_data_t in_data = ctrl_send_and_recv(out_data);
    ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_SWEET_I_GOT_THAT_TIME_DUDE);
}

/***********************************************************************
 * MBoard Get Properties
 **********************************************************************/
void usrp2_impl::mboard_get(const wax::obj &key_, wax::obj &val){
    wax::obj key; std::string name;
    boost::tie(key, name) = extract_named_prop(key_);

    //handle the other props
    if (key.type() == typeid(std::string)){
        if (key.as<std::string>() == "mac-addr"){
            //setup the out data
            usrp2_ctrl_data_t out_data;
            out_data.id = htonl(USRP2_CTRL_ID_GIVE_ME_YOUR_MAC_ADDR_BRO);

            //send and recv
            usrp2_ctrl_data_t in_data = ctrl_send_and_recv(out_data);
            ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_THIS_IS_MY_MAC_ADDR_DUDE);

            //extract the address
            val = reinterpret_cast<mac_addr_t*>(in_data.data.mac_addr)->to_string();
            return;
        }

        if (key.as<std::string>() == "ip-addr"){
            //setup the out data
            usrp2_ctrl_data_t out_data;
            out_data.id = htonl(USRP2_CTRL_ID_GIVE_ME_YOUR_IP_ADDR_BRO);

            //send and recv
            usrp2_ctrl_data_t in_data = ctrl_send_and_recv(out_data);
            ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_THIS_IS_MY_IP_ADDR_DUDE);

            //extract the address
            val = boost::asio::ip::address_v4(ntohl(in_data.data.ip_addr)).to_string();
            return;
        }
    }

    //handle the get request conditioned on the key
    switch(key.as<mboard_prop_t>()){
    case MBOARD_PROP_NAME:
        val = std::string("usrp2 mboard");
        return;

    case MBOARD_PROP_OTHERS:{
            prop_names_t others = boost::assign::list_of
                ("mac-addr")
                ("ip-addr")
            ;
            val = others;
        }
        return;

    case MBOARD_PROP_RX_DBOARD:
        ASSERT_THROW(_rx_dboards.has_key(name));
        val = _rx_dboards[name]->get_link();
        return;

    case MBOARD_PROP_RX_DBOARD_NAMES:
        val = prop_names_t(_rx_dboards.get_keys());
        return;

    case MBOARD_PROP_TX_DBOARD:
        ASSERT_THROW(_tx_dboards.has_key(name));
        val = _tx_dboards[name]->get_link();
        return;

    case MBOARD_PROP_TX_DBOARD_NAMES:
        val = prop_names_t(_tx_dboards.get_keys());
        return;

    case MBOARD_PROP_CLOCK_RATE:
        val = freq_t(get_master_clock_freq());
        return;

    case MBOARD_PROP_RX_DSP:
        ASSERT_THROW(_rx_dsps.has_key(name));
        val = _rx_dsps[name]->get_link();
        return;

    case MBOARD_PROP_RX_DSP_NAMES:
        val = prop_names_t(_rx_dsps.get_keys());
        return;

    case MBOARD_PROP_TX_DSP:
        ASSERT_THROW(_tx_dsps.has_key(name));
        val = _tx_dsps[name]->get_link();
        return;

    case MBOARD_PROP_TX_DSP_NAMES:
        val = prop_names_t(_tx_dsps.get_keys());
        return;

    case MBOARD_PROP_CLOCK_CONFIG:
        val = _clock_config;
        return;

    case MBOARD_PROP_PPS_SOURCE_NAMES:
        val = prop_names_t(_pps_source_dict.get_keys());
        return;

    case MBOARD_PROP_REF_SOURCE_NAMES:
        val = prop_names_t(_ref_source_dict.get_keys());
        return;

    case MBOARD_PROP_TIME_NOW:
    case MBOARD_PROP_TIME_NEXT_PPS:
        throw std::runtime_error("Error: trying to get write-only property on usrp2 mboard");

    }
}

/***********************************************************************
 * MBoard Set Properties
 **********************************************************************/
void usrp2_impl::mboard_set(const wax::obj &key, const wax::obj &val){
    //handle the other props
    if (key.type() == typeid(std::string)){
        if (key.as<std::string>() == "mac-addr"){
            //setup the out data
            usrp2_ctrl_data_t out_data;
            out_data.id = htonl(USRP2_CTRL_ID_HERE_IS_A_NEW_MAC_ADDR_BRO);
            mac_addr_t mac_addr(val.as<std::string>());
            std::memcpy(out_data.data.mac_addr, &mac_addr, sizeof(mac_addr_t));

            //send and recv
            usrp2_ctrl_data_t in_data = ctrl_send_and_recv(out_data);
            ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_THIS_IS_MY_MAC_ADDR_DUDE);
            return;
        }

        if (key.as<std::string>() == "ip-addr"){
            //setup the out data
            usrp2_ctrl_data_t out_data;
            out_data.id = htonl(USRP2_CTRL_ID_HERE_IS_A_NEW_IP_ADDR_BRO);
            out_data.data.ip_addr = htonl(boost::asio::ip::address_v4::from_string(val.as<std::string>()).to_ulong());

            //send and recv
            usrp2_ctrl_data_t in_data = ctrl_send_and_recv(out_data);
            ASSERT_THROW(htonl(in_data.id) == USRP2_CTRL_ID_THIS_IS_MY_IP_ADDR_DUDE);
            return;
        }
    }

    //handle the get request conditioned on the key
    switch(key.as<mboard_prop_t>()){

    case MBOARD_PROP_CLOCK_CONFIG:{
            clock_config_t clock_config = val.as<clock_config_t>();
            assert_has(_pps_source_dict.get_keys(), clock_config.pps_source, "usrp2 pps source");
            assert_has(_ref_source_dict.get_keys(), clock_config.ref_source, "usrp2 ref source");
            _clock_config = clock_config; //shadow
            update_clock_config();
        }
        return;

    case MBOARD_PROP_TIME_NOW:{
        set_time_spec(val.as<time_spec_t>(), true);
        return;
    }

    case MBOARD_PROP_TIME_NEXT_PPS:{
        set_time_spec(val.as<time_spec_t>(), false);
        return;
    }

    case MBOARD_PROP_NAME:
    case MBOARD_PROP_OTHERS:
    case MBOARD_PROP_CLOCK_RATE:
    case MBOARD_PROP_RX_DSP:
    case MBOARD_PROP_RX_DSP_NAMES:
    case MBOARD_PROP_TX_DSP:
    case MBOARD_PROP_TX_DSP_NAMES:
    case MBOARD_PROP_RX_DBOARD:
    case MBOARD_PROP_RX_DBOARD_NAMES:
    case MBOARD_PROP_TX_DBOARD:
    case MBOARD_PROP_TX_DBOARD_NAMES:
    case MBOARD_PROP_PPS_SOURCE_NAMES:
    case MBOARD_PROP_REF_SOURCE_NAMES:
        throw std::runtime_error("Error: trying to set read-only property on usrp2 mboard");

    }
}